COH 901 335 and COH 901 571/3. They contain 3, 5 or 7
ports of 8 GPIO pins each.
-config PINCTRL_SAMSUNG
- bool
- select PINMUX
- select PINCONF
-
-config PINCTRL_EXYNOS
- bool "Pinctrl driver data for Samsung EXYNOS SoCs other than 5440"
- depends on OF && GPIOLIB && (ARCH_EXYNOS || ARCH_S5PV210)
- select PINCTRL_SAMSUNG
-
-config PINCTRL_EXYNOS5440
- bool "Samsung EXYNOS5440 SoC pinctrl driver"
- depends on SOC_EXYNOS5440
- select PINMUX
- select PINCONF
-
config PINCTRL_PALMAS
bool "Pinctrl driver for the PALMAS Series MFD devices"
depends on OF && MFD_PALMAS
open drain configuration for the Palmas series devices like
TPS65913, TPS80036 etc.
-config PINCTRL_S3C24XX
- bool "Samsung S3C24XX SoC pinctrl driver"
- depends on ARCH_S3C24XX
- select PINCTRL_SAMSUNG
-
-config PINCTRL_S3C64XX
- bool "Samsung S3C64XX SoC pinctrl driver"
- depends on ARCH_S3C64XX
- select PINCTRL_SAMSUNG
-
source "drivers/pinctrl/berlin/Kconfig"
source "drivers/pinctrl/mvebu/Kconfig"
source "drivers/pinctrl/qcom/Kconfig"
+source "drivers/pinctrl/samsung/Kconfig"
source "drivers/pinctrl/sh-pfc/Kconfig"
source "drivers/pinctrl/spear/Kconfig"
source "drivers/pinctrl/sunxi/Kconfig"
obj-$(CONFIG_PINCTRL_TZ1090_PDC) += pinctrl-tz1090-pdc.o
obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o
obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o
-obj-$(CONFIG_PINCTRL_SAMSUNG) += pinctrl-samsung.o
-obj-$(CONFIG_PINCTRL_EXYNOS) += pinctrl-exynos.o
-obj-$(CONFIG_PINCTRL_EXYNOS5440) += pinctrl-exynos5440.o
-obj-$(CONFIG_PINCTRL_S3C24XX) += pinctrl-s3c24xx.o
-obj-$(CONFIG_PINCTRL_S3C64XX) += pinctrl-s3c64xx.o
obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o
obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o
obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o
obj-$(CONFIG_ARCH_BERLIN) += berlin/
obj-$(CONFIG_PLAT_ORION) += mvebu/
obj-$(CONFIG_ARCH_QCOM) += qcom/
+obj-$(CONFIG_PLAT_SAMSUNG) += samsung/
obj-$(CONFIG_ARCH_SHMOBILE) += sh-pfc/
obj-$(CONFIG_SUPERH) += sh-pfc/
obj-$(CONFIG_PLAT_SPEAR) += spear/
-obj-$(CONFIG_ARCH_VT8500) += vt8500/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
+obj-$(CONFIG_ARCH_VT8500) += vt8500/
+++ /dev/null
-/*
- * Exynos specific support for Samsung pinctrl/gpiolib driver with eint support.
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- * Copyright (c) 2012 Linaro Ltd
- * http://www.linaro.org
- *
- * Author: Thomas Abraham <thomas.ab@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This file contains the Samsung Exynos specific information required by the
- * the Samsung pinctrl/gpiolib driver. It also includes the implementation of
- * external gpio and wakeup interrupt support.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/irqdomain.h>
-#include <linux/irq.h>
-#include <linux/irqchip/chained_irq.h>
-#include <linux/of_irq.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/err.h>
-
-#include "pinctrl-samsung.h"
-#include "pinctrl-exynos.h"
-
-struct exynos_irq_chip {
- struct irq_chip chip;
-
- u32 eint_con;
- u32 eint_mask;
- u32 eint_pend;
-};
-
-static inline struct exynos_irq_chip *to_exynos_irq_chip(struct irq_chip *chip)
-{
- return container_of(chip, struct exynos_irq_chip, chip);
-}
-
-static struct samsung_pin_bank_type bank_type_off = {
- .fld_width = { 4, 1, 2, 2, 2, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, },
-};
-
-static struct samsung_pin_bank_type bank_type_alive = {
- .fld_width = { 4, 1, 2, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
-};
-
-/* list of external wakeup controllers supported */
-static const struct of_device_id exynos_wkup_irq_ids[] = {
- { .compatible = "samsung,exynos4210-wakeup-eint", },
- { }
-};
-
-static void exynos_irq_mask(struct irq_data *irqd)
-{
- struct irq_chip *chip = irq_data_get_irq_chip(irqd);
- struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned long reg_mask = our_chip->eint_mask + bank->eint_offset;
- unsigned long mask;
- unsigned long flags;
-
- spin_lock_irqsave(&bank->slock, flags);
-
- mask = readl(d->virt_base + reg_mask);
- mask |= 1 << irqd->hwirq;
- writel(mask, d->virt_base + reg_mask);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-}
-
-static void exynos_irq_ack(struct irq_data *irqd)
-{
- struct irq_chip *chip = irq_data_get_irq_chip(irqd);
- struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned long reg_pend = our_chip->eint_pend + bank->eint_offset;
-
- writel(1 << irqd->hwirq, d->virt_base + reg_pend);
-}
-
-static void exynos_irq_unmask(struct irq_data *irqd)
-{
- struct irq_chip *chip = irq_data_get_irq_chip(irqd);
- struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned long reg_mask = our_chip->eint_mask + bank->eint_offset;
- unsigned long mask;
- unsigned long flags;
-
- /*
- * Ack level interrupts right before unmask
- *
- * If we don't do this we'll get a double-interrupt. Level triggered
- * interrupts must not fire an interrupt if the level is not
- * _currently_ active, even if it was active while the interrupt was
- * masked.
- */
- if (irqd_get_trigger_type(irqd) & IRQ_TYPE_LEVEL_MASK)
- exynos_irq_ack(irqd);
-
- spin_lock_irqsave(&bank->slock, flags);
-
- mask = readl(d->virt_base + reg_mask);
- mask &= ~(1 << irqd->hwirq);
- writel(mask, d->virt_base + reg_mask);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-}
-
-static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type)
-{
- struct irq_chip *chip = irq_data_get_irq_chip(irqd);
- struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pin_bank_type *bank_type = bank->type;
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned int pin = irqd->hwirq;
- unsigned int shift = EXYNOS_EINT_CON_LEN * pin;
- unsigned int con, trig_type;
- unsigned long reg_con = our_chip->eint_con + bank->eint_offset;
- unsigned long flags;
- unsigned int mask;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- trig_type = EXYNOS_EINT_EDGE_RISING;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- trig_type = EXYNOS_EINT_EDGE_FALLING;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- trig_type = EXYNOS_EINT_EDGE_BOTH;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- trig_type = EXYNOS_EINT_LEVEL_HIGH;
- break;
- case IRQ_TYPE_LEVEL_LOW:
- trig_type = EXYNOS_EINT_LEVEL_LOW;
- break;
- default:
- pr_err("unsupported external interrupt type\n");
- return -EINVAL;
- }
-
- if (type & IRQ_TYPE_EDGE_BOTH)
- __irq_set_handler_locked(irqd->irq, handle_edge_irq);
- else
- __irq_set_handler_locked(irqd->irq, handle_level_irq);
-
- con = readl(d->virt_base + reg_con);
- con &= ~(EXYNOS_EINT_CON_MASK << shift);
- con |= trig_type << shift;
- writel(con, d->virt_base + reg_con);
-
- reg_con = bank->pctl_offset + bank_type->reg_offset[PINCFG_TYPE_FUNC];
- shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC];
- mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
-
- spin_lock_irqsave(&bank->slock, flags);
-
- con = readl(d->virt_base + reg_con);
- con &= ~(mask << shift);
- con |= EXYNOS_EINT_FUNC << shift;
- writel(con, d->virt_base + reg_con);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-
- return 0;
-}
-
-/*
- * irq_chip for gpio interrupts.
- */
-static struct exynos_irq_chip exynos_gpio_irq_chip = {
- .chip = {
- .name = "exynos_gpio_irq_chip",
- .irq_unmask = exynos_irq_unmask,
- .irq_mask = exynos_irq_mask,
- .irq_ack = exynos_irq_ack,
- .irq_set_type = exynos_irq_set_type,
- },
- .eint_con = EXYNOS_GPIO_ECON_OFFSET,
- .eint_mask = EXYNOS_GPIO_EMASK_OFFSET,
- .eint_pend = EXYNOS_GPIO_EPEND_OFFSET,
-};
-
-static int exynos_gpio_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct samsung_pin_bank *b = h->host_data;
-
- irq_set_chip_data(virq, b);
- irq_set_chip_and_handler(virq, &exynos_gpio_irq_chip.chip,
- handle_level_irq);
- set_irq_flags(virq, IRQF_VALID);
- return 0;
-}
-
-/*
- * irq domain callbacks for external gpio interrupt controller.
- */
-static const struct irq_domain_ops exynos_gpio_irqd_ops = {
- .map = exynos_gpio_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-static irqreturn_t exynos_eint_gpio_irq(int irq, void *data)
-{
- struct samsung_pinctrl_drv_data *d = data;
- struct samsung_pin_ctrl *ctrl = d->ctrl;
- struct samsung_pin_bank *bank = ctrl->pin_banks;
- unsigned int svc, group, pin, virq;
-
- svc = readl(d->virt_base + EXYNOS_SVC_OFFSET);
- group = EXYNOS_SVC_GROUP(svc);
- pin = svc & EXYNOS_SVC_NUM_MASK;
-
- if (!group)
- return IRQ_HANDLED;
- bank += (group - 1);
-
- virq = irq_linear_revmap(bank->irq_domain, pin);
- if (!virq)
- return IRQ_NONE;
- generic_handle_irq(virq);
- return IRQ_HANDLED;
-}
-
-struct exynos_eint_gpio_save {
- u32 eint_con;
- u32 eint_fltcon0;
- u32 eint_fltcon1;
-};
-
-/*
- * exynos_eint_gpio_init() - setup handling of external gpio interrupts.
- * @d: driver data of samsung pinctrl driver.
- */
-static int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
-{
- struct samsung_pin_bank *bank;
- struct device *dev = d->dev;
- int ret;
- int i;
-
- if (!d->irq) {
- dev_err(dev, "irq number not available\n");
- return -EINVAL;
- }
-
- ret = devm_request_irq(dev, d->irq, exynos_eint_gpio_irq,
- 0, dev_name(dev), d);
- if (ret) {
- dev_err(dev, "irq request failed\n");
- return -ENXIO;
- }
-
- bank = d->ctrl->pin_banks;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- if (bank->eint_type != EINT_TYPE_GPIO)
- continue;
- bank->irq_domain = irq_domain_add_linear(bank->of_node,
- bank->nr_pins, &exynos_gpio_irqd_ops, bank);
- if (!bank->irq_domain) {
- dev_err(dev, "gpio irq domain add failed\n");
- ret = -ENXIO;
- goto err_domains;
- }
-
- bank->soc_priv = devm_kzalloc(d->dev,
- sizeof(struct exynos_eint_gpio_save), GFP_KERNEL);
- if (!bank->soc_priv) {
- irq_domain_remove(bank->irq_domain);
- ret = -ENOMEM;
- goto err_domains;
- }
- }
-
- return 0;
-
-err_domains:
- for (--i, --bank; i >= 0; --i, --bank) {
- if (bank->eint_type != EINT_TYPE_GPIO)
- continue;
- irq_domain_remove(bank->irq_domain);
- }
-
- return ret;
-}
-
-static u32 exynos_eint_wake_mask = 0xffffffff;
-
-u32 exynos_get_eint_wake_mask(void)
-{
- return exynos_eint_wake_mask;
-}
-
-static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- unsigned long bit = 1UL << (2 * bank->eint_offset + irqd->hwirq);
-
- pr_info("wake %s for irq %d\n", on ? "enabled" : "disabled", irqd->irq);
-
- if (!on)
- exynos_eint_wake_mask |= bit;
- else
- exynos_eint_wake_mask &= ~bit;
-
- return 0;
-}
-
-/*
- * irq_chip for wakeup interrupts
- */
-static struct exynos_irq_chip exynos_wkup_irq_chip = {
- .chip = {
- .name = "exynos_wkup_irq_chip",
- .irq_unmask = exynos_irq_unmask,
- .irq_mask = exynos_irq_mask,
- .irq_ack = exynos_irq_ack,
- .irq_set_type = exynos_irq_set_type,
- .irq_set_wake = exynos_wkup_irq_set_wake,
- },
- .eint_con = EXYNOS_WKUP_ECON_OFFSET,
- .eint_mask = EXYNOS_WKUP_EMASK_OFFSET,
- .eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
-};
-
-/* interrupt handler for wakeup interrupts 0..15 */
-static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
-{
- struct exynos_weint_data *eintd = irq_get_handler_data(irq);
- struct samsung_pin_bank *bank = eintd->bank;
- struct irq_chip *chip = irq_get_chip(irq);
- int eint_irq;
-
- chained_irq_enter(chip, desc);
- chip->irq_mask(&desc->irq_data);
-
- if (chip->irq_ack)
- chip->irq_ack(&desc->irq_data);
-
- eint_irq = irq_linear_revmap(bank->irq_domain, eintd->irq);
- generic_handle_irq(eint_irq);
- chip->irq_unmask(&desc->irq_data);
- chained_irq_exit(chip, desc);
-}
-
-static inline void exynos_irq_demux_eint(unsigned long pend,
- struct irq_domain *domain)
-{
- unsigned int irq;
-
- while (pend) {
- irq = fls(pend) - 1;
- generic_handle_irq(irq_find_mapping(domain, irq));
- pend &= ~(1 << irq);
- }
-}
-
-/* interrupt handler for wakeup interrupt 16 */
-static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- struct exynos_muxed_weint_data *eintd = irq_get_handler_data(irq);
- struct samsung_pinctrl_drv_data *d = eintd->banks[0]->drvdata;
- unsigned long pend;
- unsigned long mask;
- int i;
-
- chained_irq_enter(chip, desc);
-
- for (i = 0; i < eintd->nr_banks; ++i) {
- struct samsung_pin_bank *b = eintd->banks[i];
- pend = readl(d->virt_base + EXYNOS_WKUP_EPEND_OFFSET
- + b->eint_offset);
- mask = readl(d->virt_base + EXYNOS_WKUP_EMASK_OFFSET
- + b->eint_offset);
- exynos_irq_demux_eint(pend & ~mask, b->irq_domain);
- }
-
- chained_irq_exit(chip, desc);
-}
-
-static int exynos_wkup_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- irq_set_chip_and_handler(virq, &exynos_wkup_irq_chip.chip,
- handle_level_irq);
- irq_set_chip_data(virq, h->host_data);
- set_irq_flags(virq, IRQF_VALID);
- return 0;
-}
-
-/*
- * irq domain callbacks for external wakeup interrupt controller.
- */
-static const struct irq_domain_ops exynos_wkup_irqd_ops = {
- .map = exynos_wkup_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-/*
- * exynos_eint_wkup_init() - setup handling of external wakeup interrupts.
- * @d: driver data of samsung pinctrl driver.
- */
-static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
-{
- struct device *dev = d->dev;
- struct device_node *wkup_np = NULL;
- struct device_node *np;
- struct samsung_pin_bank *bank;
- struct exynos_weint_data *weint_data;
- struct exynos_muxed_weint_data *muxed_data;
- unsigned int muxed_banks = 0;
- unsigned int i;
- int idx, irq;
-
- for_each_child_of_node(dev->of_node, np) {
- if (of_match_node(exynos_wkup_irq_ids, np)) {
- wkup_np = np;
- break;
- }
- }
- if (!wkup_np)
- return -ENODEV;
-
- bank = d->ctrl->pin_banks;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- if (bank->eint_type != EINT_TYPE_WKUP)
- continue;
-
- bank->irq_domain = irq_domain_add_linear(bank->of_node,
- bank->nr_pins, &exynos_wkup_irqd_ops, bank);
- if (!bank->irq_domain) {
- dev_err(dev, "wkup irq domain add failed\n");
- return -ENXIO;
- }
-
- if (!of_find_property(bank->of_node, "interrupts", NULL)) {
- bank->eint_type = EINT_TYPE_WKUP_MUX;
- ++muxed_banks;
- continue;
- }
-
- weint_data = devm_kzalloc(dev, bank->nr_pins
- * sizeof(*weint_data), GFP_KERNEL);
- if (!weint_data) {
- dev_err(dev, "could not allocate memory for weint_data\n");
- return -ENOMEM;
- }
-
- for (idx = 0; idx < bank->nr_pins; ++idx) {
- irq = irq_of_parse_and_map(bank->of_node, idx);
- if (!irq) {
- dev_err(dev, "irq number for eint-%s-%d not found\n",
- bank->name, idx);
- continue;
- }
- weint_data[idx].irq = idx;
- weint_data[idx].bank = bank;
- irq_set_handler_data(irq, &weint_data[idx]);
- irq_set_chained_handler(irq, exynos_irq_eint0_15);
- }
- }
-
- if (!muxed_banks)
- return 0;
-
- irq = irq_of_parse_and_map(wkup_np, 0);
- if (!irq) {
- dev_err(dev, "irq number for muxed EINTs not found\n");
- return 0;
- }
-
- muxed_data = devm_kzalloc(dev, sizeof(*muxed_data)
- + muxed_banks*sizeof(struct samsung_pin_bank *), GFP_KERNEL);
- if (!muxed_data) {
- dev_err(dev, "could not allocate memory for muxed_data\n");
- return -ENOMEM;
- }
-
- irq_set_chained_handler(irq, exynos_irq_demux_eint16_31);
- irq_set_handler_data(irq, muxed_data);
-
- bank = d->ctrl->pin_banks;
- idx = 0;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- if (bank->eint_type != EINT_TYPE_WKUP_MUX)
- continue;
-
- muxed_data->banks[idx++] = bank;
- }
- muxed_data->nr_banks = muxed_banks;
-
- return 0;
-}
-
-static void exynos_pinctrl_suspend_bank(
- struct samsung_pinctrl_drv_data *drvdata,
- struct samsung_pin_bank *bank)
-{
- struct exynos_eint_gpio_save *save = bank->soc_priv;
- void __iomem *regs = drvdata->virt_base;
-
- save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET
- + bank->eint_offset);
- save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
- + 2 * bank->eint_offset);
- save->eint_fltcon1 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
- + 2 * bank->eint_offset + 4);
-
- pr_debug("%s: save con %#010x\n", bank->name, save->eint_con);
- pr_debug("%s: save fltcon0 %#010x\n", bank->name, save->eint_fltcon0);
- pr_debug("%s: save fltcon1 %#010x\n", bank->name, save->eint_fltcon1);
-}
-
-static void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata)
-{
- struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
- struct samsung_pin_bank *bank = ctrl->pin_banks;
- int i;
-
- for (i = 0; i < ctrl->nr_banks; ++i, ++bank)
- if (bank->eint_type == EINT_TYPE_GPIO)
- exynos_pinctrl_suspend_bank(drvdata, bank);
-}
-
-static void exynos_pinctrl_resume_bank(
- struct samsung_pinctrl_drv_data *drvdata,
- struct samsung_pin_bank *bank)
-{
- struct exynos_eint_gpio_save *save = bank->soc_priv;
- void __iomem *regs = drvdata->virt_base;
-
- pr_debug("%s: con %#010x => %#010x\n", bank->name,
- readl(regs + EXYNOS_GPIO_ECON_OFFSET
- + bank->eint_offset), save->eint_con);
- pr_debug("%s: fltcon0 %#010x => %#010x\n", bank->name,
- readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
- + 2 * bank->eint_offset), save->eint_fltcon0);
- pr_debug("%s: fltcon1 %#010x => %#010x\n", bank->name,
- readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
- + 2 * bank->eint_offset + 4), save->eint_fltcon1);
-
- writel(save->eint_con, regs + EXYNOS_GPIO_ECON_OFFSET
- + bank->eint_offset);
- writel(save->eint_fltcon0, regs + EXYNOS_GPIO_EFLTCON_OFFSET
- + 2 * bank->eint_offset);
- writel(save->eint_fltcon1, regs + EXYNOS_GPIO_EFLTCON_OFFSET
- + 2 * bank->eint_offset + 4);
-}
-
-static void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata)
-{
- struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
- struct samsung_pin_bank *bank = ctrl->pin_banks;
- int i;
-
- for (i = 0; i < ctrl->nr_banks; ++i, ++bank)
- if (bank->eint_type == EINT_TYPE_GPIO)
- exynos_pinctrl_resume_bank(drvdata, bank);
-}
-
-/* pin banks of s5pv210 pin-controller */
-static struct samsung_pin_bank s5pv210_pin_bank[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(4, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0a0, "gpd0", 0x14),
- EXYNOS_PIN_BANK_EINTG(6, 0x0c0, "gpd1", 0x18),
- EXYNOS_PIN_BANK_EINTG(8, 0x0e0, "gpe0", 0x1c),
- EXYNOS_PIN_BANK_EINTG(5, 0x100, "gpe1", 0x20),
- EXYNOS_PIN_BANK_EINTG(8, 0x120, "gpf0", 0x24),
- EXYNOS_PIN_BANK_EINTG(8, 0x140, "gpf1", 0x28),
- EXYNOS_PIN_BANK_EINTG(8, 0x160, "gpf2", 0x2c),
- EXYNOS_PIN_BANK_EINTG(6, 0x180, "gpf3", 0x30),
- EXYNOS_PIN_BANK_EINTG(7, 0x1a0, "gpg0", 0x34),
- EXYNOS_PIN_BANK_EINTG(7, 0x1c0, "gpg1", 0x38),
- EXYNOS_PIN_BANK_EINTG(7, 0x1e0, "gpg2", 0x3c),
- EXYNOS_PIN_BANK_EINTG(7, 0x200, "gpg3", 0x40),
- EXYNOS_PIN_BANK_EINTN(7, 0x220, "gpi"),
- EXYNOS_PIN_BANK_EINTG(8, 0x240, "gpj0", 0x44),
- EXYNOS_PIN_BANK_EINTG(6, 0x260, "gpj1", 0x48),
- EXYNOS_PIN_BANK_EINTG(8, 0x280, "gpj2", 0x4c),
- EXYNOS_PIN_BANK_EINTG(8, 0x2a0, "gpj3", 0x50),
- EXYNOS_PIN_BANK_EINTG(5, 0x2c0, "gpj4", 0x54),
- EXYNOS_PIN_BANK_EINTN(8, 0x2e0, "mp01"),
- EXYNOS_PIN_BANK_EINTN(4, 0x300, "mp02"),
- EXYNOS_PIN_BANK_EINTN(8, 0x320, "mp03"),
- EXYNOS_PIN_BANK_EINTN(8, 0x340, "mp04"),
- EXYNOS_PIN_BANK_EINTN(8, 0x360, "mp05"),
- EXYNOS_PIN_BANK_EINTN(8, 0x380, "mp06"),
- EXYNOS_PIN_BANK_EINTN(8, 0x3a0, "mp07"),
- EXYNOS_PIN_BANK_EINTW(8, 0xc00, "gph0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xc20, "gph1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xc40, "gph2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xc60, "gph3", 0x0c),
-};
-
-struct samsung_pin_ctrl s5pv210_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = s5pv210_pin_bank,
- .nr_banks = ARRAY_SIZE(s5pv210_pin_bank),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "s5pv210-gpio-ctrl0",
- },
-};
-
-/* pin banks of exynos3250 pin-controller 0 */
-static struct samsung_pin_bank exynos3250_pin_banks0[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0a0, "gpd0", 0x14),
- EXYNOS_PIN_BANK_EINTG(4, 0x0c0, "gpd1", 0x18),
-};
-
-/* pin banks of exynos3250 pin-controller 1 */
-static struct samsung_pin_bank exynos3250_pin_banks1[] = {
- EXYNOS_PIN_BANK_EINTN(8, 0x120, "gpe0"),
- EXYNOS_PIN_BANK_EINTN(8, 0x140, "gpe1"),
- EXYNOS_PIN_BANK_EINTN(3, 0x180, "gpe2"),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpk0", 0x08),
- EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
- EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0c0, "gpl0", 0x18),
- EXYNOS_PIN_BANK_EINTG(8, 0x260, "gpm0", 0x24),
- EXYNOS_PIN_BANK_EINTG(7, 0x280, "gpm1", 0x28),
- EXYNOS_PIN_BANK_EINTG(5, 0x2a0, "gpm2", 0x2c),
- EXYNOS_PIN_BANK_EINTG(8, 0x2c0, "gpm3", 0x30),
- EXYNOS_PIN_BANK_EINTG(8, 0x2e0, "gpm4", 0x34),
- EXYNOS_PIN_BANK_EINTW(8, 0xc00, "gpx0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xc20, "gpx1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xc40, "gpx2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xc60, "gpx3", 0x0c),
-};
-
-/*
- * Samsung pinctrl driver data for Exynos3250 SoC. Exynos3250 SoC includes
- * two gpio/pin-mux/pinconfig controllers.
- */
-struct samsung_pin_ctrl exynos3250_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = exynos3250_pin_banks0,
- .nr_banks = ARRAY_SIZE(exynos3250_pin_banks0),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos3250-gpio-ctrl0",
- }, {
- /* pin-controller instance 1 data */
- .pin_banks = exynos3250_pin_banks1,
- .nr_banks = ARRAY_SIZE(exynos3250_pin_banks1),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos3250-gpio-ctrl1",
- },
-};
-
-/* pin banks of exynos4210 pin-controller 0 */
-static struct samsung_pin_bank exynos4210_pin_banks0[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpd0", 0x14),
- EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpd1", 0x18),
- EXYNOS_PIN_BANK_EINTG(5, 0x0E0, "gpe0", 0x1c),
- EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpe1", 0x20),
- EXYNOS_PIN_BANK_EINTG(6, 0x120, "gpe2", 0x24),
- EXYNOS_PIN_BANK_EINTG(8, 0x140, "gpe3", 0x28),
- EXYNOS_PIN_BANK_EINTG(8, 0x160, "gpe4", 0x2c),
- EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf0", 0x30),
- EXYNOS_PIN_BANK_EINTG(8, 0x1A0, "gpf1", 0x34),
- EXYNOS_PIN_BANK_EINTG(8, 0x1C0, "gpf2", 0x38),
- EXYNOS_PIN_BANK_EINTG(6, 0x1E0, "gpf3", 0x3c),
-};
-
-/* pin banks of exynos4210 pin-controller 1 */
-static struct samsung_pin_bank exynos4210_pin_banks1[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpj0", 0x00),
- EXYNOS_PIN_BANK_EINTG(5, 0x020, "gpj1", 0x04),
- EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpk0", 0x08),
- EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
- EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
- EXYNOS_PIN_BANK_EINTG(7, 0x0A0, "gpk3", 0x14),
- EXYNOS_PIN_BANK_EINTG(8, 0x0C0, "gpl0", 0x18),
- EXYNOS_PIN_BANK_EINTG(3, 0x0E0, "gpl1", 0x1c),
- EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpl2", 0x20),
- EXYNOS_PIN_BANK_EINTN(6, 0x120, "gpy0"),
- EXYNOS_PIN_BANK_EINTN(4, 0x140, "gpy1"),
- EXYNOS_PIN_BANK_EINTN(6, 0x160, "gpy2"),
- EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy3"),
- EXYNOS_PIN_BANK_EINTN(8, 0x1A0, "gpy4"),
- EXYNOS_PIN_BANK_EINTN(8, 0x1C0, "gpy5"),
- EXYNOS_PIN_BANK_EINTN(8, 0x1E0, "gpy6"),
- EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
-};
-
-/* pin banks of exynos4210 pin-controller 2 */
-static struct samsung_pin_bank exynos4210_pin_banks2[] = {
- EXYNOS_PIN_BANK_EINTN(7, 0x000, "gpz"),
-};
-
-/*
- * Samsung pinctrl driver data for Exynos4210 SoC. Exynos4210 SoC includes
- * three gpio/pin-mux/pinconfig controllers.
- */
-struct samsung_pin_ctrl exynos4210_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = exynos4210_pin_banks0,
- .nr_banks = ARRAY_SIZE(exynos4210_pin_banks0),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos4210-gpio-ctrl0",
- }, {
- /* pin-controller instance 1 data */
- .pin_banks = exynos4210_pin_banks1,
- .nr_banks = ARRAY_SIZE(exynos4210_pin_banks1),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos4210-gpio-ctrl1",
- }, {
- /* pin-controller instance 2 data */
- .pin_banks = exynos4210_pin_banks2,
- .nr_banks = ARRAY_SIZE(exynos4210_pin_banks2),
- .label = "exynos4210-gpio-ctrl2",
- },
-};
-
-/* pin banks of exynos4x12 pin-controller 0 */
-static struct samsung_pin_bank exynos4x12_pin_banks0[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpd0", 0x14),
- EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpd1", 0x18),
- EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf0", 0x30),
- EXYNOS_PIN_BANK_EINTG(8, 0x1A0, "gpf1", 0x34),
- EXYNOS_PIN_BANK_EINTG(8, 0x1C0, "gpf2", 0x38),
- EXYNOS_PIN_BANK_EINTG(6, 0x1E0, "gpf3", 0x3c),
- EXYNOS_PIN_BANK_EINTG(8, 0x240, "gpj0", 0x40),
- EXYNOS_PIN_BANK_EINTG(5, 0x260, "gpj1", 0x44),
-};
-
-/* pin banks of exynos4x12 pin-controller 1 */
-static struct samsung_pin_bank exynos4x12_pin_banks1[] = {
- EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpk0", 0x08),
- EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
- EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
- EXYNOS_PIN_BANK_EINTG(7, 0x0A0, "gpk3", 0x14),
- EXYNOS_PIN_BANK_EINTG(7, 0x0C0, "gpl0", 0x18),
- EXYNOS_PIN_BANK_EINTG(2, 0x0E0, "gpl1", 0x1c),
- EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpl2", 0x20),
- EXYNOS_PIN_BANK_EINTG(8, 0x260, "gpm0", 0x24),
- EXYNOS_PIN_BANK_EINTG(7, 0x280, "gpm1", 0x28),
- EXYNOS_PIN_BANK_EINTG(5, 0x2A0, "gpm2", 0x2c),
- EXYNOS_PIN_BANK_EINTG(8, 0x2C0, "gpm3", 0x30),
- EXYNOS_PIN_BANK_EINTG(8, 0x2E0, "gpm4", 0x34),
- EXYNOS_PIN_BANK_EINTN(6, 0x120, "gpy0"),
- EXYNOS_PIN_BANK_EINTN(4, 0x140, "gpy1"),
- EXYNOS_PIN_BANK_EINTN(6, 0x160, "gpy2"),
- EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy3"),
- EXYNOS_PIN_BANK_EINTN(8, 0x1A0, "gpy4"),
- EXYNOS_PIN_BANK_EINTN(8, 0x1C0, "gpy5"),
- EXYNOS_PIN_BANK_EINTN(8, 0x1E0, "gpy6"),
- EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
-};
-
-/* pin banks of exynos4x12 pin-controller 2 */
-static struct samsung_pin_bank exynos4x12_pin_banks2[] = {
- EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
-};
-
-/* pin banks of exynos4x12 pin-controller 3 */
-static struct samsung_pin_bank exynos4x12_pin_banks3[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpv0", 0x00),
- EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpv1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpv2", 0x08),
- EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpv3", 0x0c),
- EXYNOS_PIN_BANK_EINTG(2, 0x080, "gpv4", 0x10),
-};
-
-/*
- * Samsung pinctrl driver data for Exynos4x12 SoC. Exynos4x12 SoC includes
- * four gpio/pin-mux/pinconfig controllers.
- */
-struct samsung_pin_ctrl exynos4x12_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = exynos4x12_pin_banks0,
- .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks0),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos4x12-gpio-ctrl0",
- }, {
- /* pin-controller instance 1 data */
- .pin_banks = exynos4x12_pin_banks1,
- .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks1),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos4x12-gpio-ctrl1",
- }, {
- /* pin-controller instance 2 data */
- .pin_banks = exynos4x12_pin_banks2,
- .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks2),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos4x12-gpio-ctrl2",
- }, {
- /* pin-controller instance 3 data */
- .pin_banks = exynos4x12_pin_banks3,
- .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks3),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos4x12-gpio-ctrl3",
- },
-};
-
-/* pin banks of exynos5250 pin-controller 0 */
-static struct samsung_pin_bank exynos5250_pin_banks0[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpb1", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpb2", 0x14),
- EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpb3", 0x18),
- EXYNOS_PIN_BANK_EINTG(7, 0x0E0, "gpc0", 0x1c),
- EXYNOS_PIN_BANK_EINTG(4, 0x100, "gpc1", 0x20),
- EXYNOS_PIN_BANK_EINTG(7, 0x120, "gpc2", 0x24),
- EXYNOS_PIN_BANK_EINTG(7, 0x140, "gpc3", 0x28),
- EXYNOS_PIN_BANK_EINTG(4, 0x160, "gpd0", 0x2c),
- EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpd1", 0x30),
- EXYNOS_PIN_BANK_EINTG(7, 0x2E0, "gpc4", 0x34),
- EXYNOS_PIN_BANK_EINTN(6, 0x1A0, "gpy0"),
- EXYNOS_PIN_BANK_EINTN(4, 0x1C0, "gpy1"),
- EXYNOS_PIN_BANK_EINTN(6, 0x1E0, "gpy2"),
- EXYNOS_PIN_BANK_EINTN(8, 0x200, "gpy3"),
- EXYNOS_PIN_BANK_EINTN(8, 0x220, "gpy4"),
- EXYNOS_PIN_BANK_EINTN(8, 0x240, "gpy5"),
- EXYNOS_PIN_BANK_EINTN(8, 0x260, "gpy6"),
- EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
-};
-
-/* pin banks of exynos5250 pin-controller 1 */
-static struct samsung_pin_bank exynos5250_pin_banks1[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpe0", 0x00),
- EXYNOS_PIN_BANK_EINTG(2, 0x020, "gpe1", 0x04),
- EXYNOS_PIN_BANK_EINTG(4, 0x040, "gpf0", 0x08),
- EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpf1", 0x0c),
- EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpg0", 0x10),
- EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpg1", 0x14),
- EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpg2", 0x18),
- EXYNOS_PIN_BANK_EINTG(4, 0x0E0, "gph0", 0x1c),
- EXYNOS_PIN_BANK_EINTG(8, 0x100, "gph1", 0x20),
-};
-
-/* pin banks of exynos5250 pin-controller 2 */
-static struct samsung_pin_bank exynos5250_pin_banks2[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpv0", 0x00),
- EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpv1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpv2", 0x08),
- EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpv3", 0x0c),
- EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpv4", 0x10),
-};
-
-/* pin banks of exynos5250 pin-controller 3 */
-static struct samsung_pin_bank exynos5250_pin_banks3[] = {
- EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
-};
-
-/*
- * Samsung pinctrl driver data for Exynos5250 SoC. Exynos5250 SoC includes
- * four gpio/pin-mux/pinconfig controllers.
- */
-struct samsung_pin_ctrl exynos5250_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = exynos5250_pin_banks0,
- .nr_banks = ARRAY_SIZE(exynos5250_pin_banks0),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos5250-gpio-ctrl0",
- }, {
- /* pin-controller instance 1 data */
- .pin_banks = exynos5250_pin_banks1,
- .nr_banks = ARRAY_SIZE(exynos5250_pin_banks1),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos5250-gpio-ctrl1",
- }, {
- /* pin-controller instance 2 data */
- .pin_banks = exynos5250_pin_banks2,
- .nr_banks = ARRAY_SIZE(exynos5250_pin_banks2),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos5250-gpio-ctrl2",
- }, {
- /* pin-controller instance 3 data */
- .pin_banks = exynos5250_pin_banks3,
- .nr_banks = ARRAY_SIZE(exynos5250_pin_banks3),
- .eint_gpio_init = exynos_eint_gpio_init,
- .suspend = exynos_pinctrl_suspend,
- .resume = exynos_pinctrl_resume,
- .label = "exynos5250-gpio-ctrl3",
- },
-};
-
-/* pin banks of exynos5260 pin-controller 0 */
-static struct samsung_pin_bank exynos5260_pin_banks0[] = {
- EXYNOS_PIN_BANK_EINTG(4, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(7, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(4, 0x080, "gpb1", 0x10),
- EXYNOS_PIN_BANK_EINTG(5, 0x0a0, "gpb2", 0x14),
- EXYNOS_PIN_BANK_EINTG(8, 0x0c0, "gpb3", 0x18),
- EXYNOS_PIN_BANK_EINTG(8, 0x0e0, "gpb4", 0x1c),
- EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpb5", 0x20),
- EXYNOS_PIN_BANK_EINTG(8, 0x120, "gpd0", 0x24),
- EXYNOS_PIN_BANK_EINTG(7, 0x140, "gpd1", 0x28),
- EXYNOS_PIN_BANK_EINTG(5, 0x160, "gpd2", 0x2c),
- EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpe0", 0x30),
- EXYNOS_PIN_BANK_EINTG(5, 0x1a0, "gpe1", 0x34),
- EXYNOS_PIN_BANK_EINTG(4, 0x1c0, "gpf0", 0x38),
- EXYNOS_PIN_BANK_EINTG(8, 0x1e0, "gpf1", 0x3c),
- EXYNOS_PIN_BANK_EINTG(2, 0x200, "gpk0", 0x40),
- EXYNOS_PIN_BANK_EINTW(8, 0xc00, "gpx0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xc20, "gpx1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xc40, "gpx2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xc60, "gpx3", 0x0c),
-};
-
-/* pin banks of exynos5260 pin-controller 1 */
-static struct samsung_pin_bank exynos5260_pin_banks1[] = {
- EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpc0", 0x00),
- EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpc1", 0x04),
- EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpc2", 0x08),
- EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpc3", 0x0c),
- EXYNOS_PIN_BANK_EINTG(4, 0x080, "gpc4", 0x10),
-};
-
-/* pin banks of exynos5260 pin-controller 2 */
-static struct samsung_pin_bank exynos5260_pin_banks2[] = {
- EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz0", 0x00),
- EXYNOS_PIN_BANK_EINTG(4, 0x020, "gpz1", 0x04),
-};
-
-/*
- * Samsung pinctrl driver data for Exynos5260 SoC. Exynos5260 SoC includes
- * three gpio/pin-mux/pinconfig controllers.
- */
-struct samsung_pin_ctrl exynos5260_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = exynos5260_pin_banks0,
- .nr_banks = ARRAY_SIZE(exynos5260_pin_banks0),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .label = "exynos5260-gpio-ctrl0",
- }, {
- /* pin-controller instance 1 data */
- .pin_banks = exynos5260_pin_banks1,
- .nr_banks = ARRAY_SIZE(exynos5260_pin_banks1),
- .eint_gpio_init = exynos_eint_gpio_init,
- .label = "exynos5260-gpio-ctrl1",
- }, {
- /* pin-controller instance 2 data */
- .pin_banks = exynos5260_pin_banks2,
- .nr_banks = ARRAY_SIZE(exynos5260_pin_banks2),
- .eint_gpio_init = exynos_eint_gpio_init,
- .label = "exynos5260-gpio-ctrl2",
- },
-};
-
-/* pin banks of exynos5420 pin-controller 0 */
-static struct samsung_pin_bank exynos5420_pin_banks0[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpy7", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
- EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
- EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
- EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
-};
-
-/* pin banks of exynos5420 pin-controller 1 */
-static struct samsung_pin_bank exynos5420_pin_banks1[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpc0", 0x00),
- EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpc1", 0x04),
- EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpc2", 0x08),
- EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpc3", 0x0c),
- EXYNOS_PIN_BANK_EINTG(2, 0x080, "gpc4", 0x10),
- EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpd1", 0x14),
- EXYNOS_PIN_BANK_EINTN(6, 0x0C0, "gpy0"),
- EXYNOS_PIN_BANK_EINTN(4, 0x0E0, "gpy1"),
- EXYNOS_PIN_BANK_EINTN(6, 0x100, "gpy2"),
- EXYNOS_PIN_BANK_EINTN(8, 0x120, "gpy3"),
- EXYNOS_PIN_BANK_EINTN(8, 0x140, "gpy4"),
- EXYNOS_PIN_BANK_EINTN(8, 0x160, "gpy5"),
- EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy6"),
-};
-
-/* pin banks of exynos5420 pin-controller 2 */
-static struct samsung_pin_bank exynos5420_pin_banks2[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpe0", 0x00),
- EXYNOS_PIN_BANK_EINTG(2, 0x020, "gpe1", 0x04),
- EXYNOS_PIN_BANK_EINTG(6, 0x040, "gpf0", 0x08),
- EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpf1", 0x0c),
- EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpg0", 0x10),
- EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpg1", 0x14),
- EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpg2", 0x18),
- EXYNOS_PIN_BANK_EINTG(4, 0x0E0, "gpj4", 0x1c),
-};
-
-/* pin banks of exynos5420 pin-controller 3 */
-static struct samsung_pin_bank exynos5420_pin_banks3[] = {
- EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
- EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
- EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
- EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
- EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpb1", 0x10),
- EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpb2", 0x14),
- EXYNOS_PIN_BANK_EINTG(8, 0x0C0, "gpb3", 0x18),
- EXYNOS_PIN_BANK_EINTG(2, 0x0E0, "gpb4", 0x1c),
- EXYNOS_PIN_BANK_EINTG(8, 0x100, "gph0", 0x20),
-};
-
-/* pin banks of exynos5420 pin-controller 4 */
-static struct samsung_pin_bank exynos5420_pin_banks4[] = {
- EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
-};
-
-/*
- * Samsung pinctrl driver data for Exynos5420 SoC. Exynos5420 SoC includes
- * four gpio/pin-mux/pinconfig controllers.
- */
-struct samsung_pin_ctrl exynos5420_pin_ctrl[] = {
- {
- /* pin-controller instance 0 data */
- .pin_banks = exynos5420_pin_banks0,
- .nr_banks = ARRAY_SIZE(exynos5420_pin_banks0),
- .eint_gpio_init = exynos_eint_gpio_init,
- .eint_wkup_init = exynos_eint_wkup_init,
- .label = "exynos5420-gpio-ctrl0",
- }, {
- /* pin-controller instance 1 data */
- .pin_banks = exynos5420_pin_banks1,
- .nr_banks = ARRAY_SIZE(exynos5420_pin_banks1),
- .eint_gpio_init = exynos_eint_gpio_init,
- .label = "exynos5420-gpio-ctrl1",
- }, {
- /* pin-controller instance 2 data */
- .pin_banks = exynos5420_pin_banks2,
- .nr_banks = ARRAY_SIZE(exynos5420_pin_banks2),
- .eint_gpio_init = exynos_eint_gpio_init,
- .label = "exynos5420-gpio-ctrl2",
- }, {
- /* pin-controller instance 3 data */
- .pin_banks = exynos5420_pin_banks3,
- .nr_banks = ARRAY_SIZE(exynos5420_pin_banks3),
- .eint_gpio_init = exynos_eint_gpio_init,
- .label = "exynos5420-gpio-ctrl3",
- }, {
- /* pin-controller instance 4 data */
- .pin_banks = exynos5420_pin_banks4,
- .nr_banks = ARRAY_SIZE(exynos5420_pin_banks4),
- .eint_gpio_init = exynos_eint_gpio_init,
- .label = "exynos5420-gpio-ctrl4",
- },
-};
+++ /dev/null
-/*
- * Exynos specific definitions for Samsung pinctrl and gpiolib driver.
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- * Copyright (c) 2012 Linaro Ltd
- * http://www.linaro.org
- *
- * This file contains the Exynos specific definitions for the Samsung
- * pinctrl/gpiolib interface drivers.
- *
- * Author: Thomas Abraham <thomas.ab@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-/* External GPIO and wakeup interrupt related definitions */
-#define EXYNOS_GPIO_ECON_OFFSET 0x700
-#define EXYNOS_GPIO_EFLTCON_OFFSET 0x800
-#define EXYNOS_GPIO_EMASK_OFFSET 0x900
-#define EXYNOS_GPIO_EPEND_OFFSET 0xA00
-#define EXYNOS_WKUP_ECON_OFFSET 0xE00
-#define EXYNOS_WKUP_EMASK_OFFSET 0xF00
-#define EXYNOS_WKUP_EPEND_OFFSET 0xF40
-#define EXYNOS_SVC_OFFSET 0xB08
-#define EXYNOS_EINT_FUNC 0xF
-
-/* helpers to access interrupt service register */
-#define EXYNOS_SVC_GROUP_SHIFT 3
-#define EXYNOS_SVC_GROUP_MASK 0x1f
-#define EXYNOS_SVC_NUM_MASK 7
-#define EXYNOS_SVC_GROUP(x) ((x >> EXYNOS_SVC_GROUP_SHIFT) & \
- EXYNOS_SVC_GROUP_MASK)
-
-/* Exynos specific external interrupt trigger types */
-#define EXYNOS_EINT_LEVEL_LOW 0
-#define EXYNOS_EINT_LEVEL_HIGH 1
-#define EXYNOS_EINT_EDGE_FALLING 2
-#define EXYNOS_EINT_EDGE_RISING 3
-#define EXYNOS_EINT_EDGE_BOTH 4
-#define EXYNOS_EINT_CON_MASK 0xF
-#define EXYNOS_EINT_CON_LEN 4
-
-#define EXYNOS_EINT_MAX_PER_BANK 8
-#define EXYNOS_EINT_NR_WKUP_EINT
-
-#define EXYNOS_PIN_BANK_EINTN(pins, reg, id) \
- { \
- .type = &bank_type_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_NONE, \
- .name = id \
- }
-
-#define EXYNOS_PIN_BANK_EINTG(pins, reg, id, offs) \
- { \
- .type = &bank_type_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_GPIO, \
- .eint_offset = offs, \
- .name = id \
- }
-
-#define EXYNOS_PIN_BANK_EINTW(pins, reg, id, offs) \
- { \
- .type = &bank_type_alive, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_WKUP, \
- .eint_offset = offs, \
- .name = id \
- }
-
-/**
- * struct exynos_weint_data: irq specific data for all the wakeup interrupts
- * generated by the external wakeup interrupt controller.
- * @irq: interrupt number within the domain.
- * @bank: bank responsible for this interrupt
- */
-struct exynos_weint_data {
- unsigned int irq;
- struct samsung_pin_bank *bank;
-};
-
-/**
- * struct exynos_muxed_weint_data: irq specific data for muxed wakeup interrupts
- * generated by the external wakeup interrupt controller.
- * @nr_banks: count of banks being part of the mux
- * @banks: array of banks being part of the mux
- */
-struct exynos_muxed_weint_data {
- unsigned int nr_banks;
- struct samsung_pin_bank *banks[];
-};
+++ /dev/null
-/*
- * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's EXYNOS5440 SoC.
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/device.h>
-#include <linux/pinctrl/pinctrl.h>
-#include <linux/pinctrl/pinmux.h>
-#include <linux/pinctrl/pinconf.h>
-#include <linux/interrupt.h>
-#include <linux/irqdomain.h>
-#include <linux/of_irq.h>
-#include "core.h"
-
-/* EXYNOS5440 GPIO and Pinctrl register offsets */
-#define GPIO_MUX 0x00
-#define GPIO_IE 0x04
-#define GPIO_INT 0x08
-#define GPIO_TYPE 0x0C
-#define GPIO_VAL 0x10
-#define GPIO_OE 0x14
-#define GPIO_IN 0x18
-#define GPIO_PE 0x1C
-#define GPIO_PS 0x20
-#define GPIO_SR 0x24
-#define GPIO_DS0 0x28
-#define GPIO_DS1 0x2C
-
-#define EXYNOS5440_MAX_PINS 23
-#define EXYNOS5440_MAX_GPIO_INT 8
-#define PIN_NAME_LENGTH 10
-
-#define GROUP_SUFFIX "-grp"
-#define GSUFFIX_LEN sizeof(GROUP_SUFFIX)
-#define FUNCTION_SUFFIX "-mux"
-#define FSUFFIX_LEN sizeof(FUNCTION_SUFFIX)
-
-/*
- * pin configuration type and its value are packed together into a 16-bits.
- * The upper 8-bits represent the configuration type and the lower 8-bits
- * hold the value of the configuration type.
- */
-#define PINCFG_TYPE_MASK 0xFF
-#define PINCFG_VALUE_SHIFT 8
-#define PINCFG_VALUE_MASK (0xFF << PINCFG_VALUE_SHIFT)
-#define PINCFG_PACK(type, value) (((value) << PINCFG_VALUE_SHIFT) | type)
-#define PINCFG_UNPACK_TYPE(cfg) ((cfg) & PINCFG_TYPE_MASK)
-#define PINCFG_UNPACK_VALUE(cfg) (((cfg) & PINCFG_VALUE_MASK) >> \
- PINCFG_VALUE_SHIFT)
-
-/**
- * enum pincfg_type - possible pin configuration types supported.
- * @PINCFG_TYPE_PUD: Pull up/down configuration.
- * @PINCFG_TYPE_DRV: Drive strength configuration.
- * @PINCFG_TYPE_SKEW_RATE: Skew rate configuration.
- * @PINCFG_TYPE_INPUT_TYPE: Pin input type configuration.
- */
-enum pincfg_type {
- PINCFG_TYPE_PUD,
- PINCFG_TYPE_DRV,
- PINCFG_TYPE_SKEW_RATE,
- PINCFG_TYPE_INPUT_TYPE
-};
-
-/**
- * struct exynos5440_pin_group: represent group of pins for pincfg setting.
- * @name: name of the pin group, used to lookup the group.
- * @pins: the pins included in this group.
- * @num_pins: number of pins included in this group.
- */
-struct exynos5440_pin_group {
- const char *name;
- const unsigned int *pins;
- u8 num_pins;
-};
-
-/**
- * struct exynos5440_pmx_func: represent a pin function.
- * @name: name of the pin function, used to lookup the function.
- * @groups: one or more names of pin groups that provide this function.
- * @num_groups: number of groups included in @groups.
- * @function: the function number to be programmed when selected.
- */
-struct exynos5440_pmx_func {
- const char *name;
- const char **groups;
- u8 num_groups;
- unsigned long function;
-};
-
-/**
- * struct exynos5440_pinctrl_priv_data: driver's private runtime data.
- * @reg_base: ioremapped based address of the register space.
- * @gc: gpio chip registered with gpiolib.
- * @pin_groups: list of pin groups parsed from device tree.
- * @nr_groups: number of pin groups available.
- * @pmx_functions: list of pin functions parsed from device tree.
- * @nr_functions: number of pin functions available.
- */
-struct exynos5440_pinctrl_priv_data {
- void __iomem *reg_base;
- struct gpio_chip *gc;
- struct irq_domain *irq_domain;
-
- const struct exynos5440_pin_group *pin_groups;
- unsigned int nr_groups;
- const struct exynos5440_pmx_func *pmx_functions;
- unsigned int nr_functions;
-};
-
-/**
- * struct exynos5440_gpio_intr_data: private data for gpio interrupts.
- * @priv: driver's private runtime data.
- * @gpio_int: gpio interrupt number.
- */
-struct exynos5440_gpio_intr_data {
- struct exynos5440_pinctrl_priv_data *priv;
- unsigned int gpio_int;
-};
-
-/* list of all possible config options supported */
-static struct pin_config {
- char *prop_cfg;
- unsigned int cfg_type;
-} pcfgs[] = {
- { "samsung,exynos5440-pin-pud", PINCFG_TYPE_PUD },
- { "samsung,exynos5440-pin-drv", PINCFG_TYPE_DRV },
- { "samsung,exynos5440-pin-skew-rate", PINCFG_TYPE_SKEW_RATE },
- { "samsung,exynos5440-pin-input-type", PINCFG_TYPE_INPUT_TYPE },
-};
-
-/* check if the selector is a valid pin group selector */
-static int exynos5440_get_group_count(struct pinctrl_dev *pctldev)
-{
- struct exynos5440_pinctrl_priv_data *priv;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- return priv->nr_groups;
-}
-
-/* return the name of the group selected by the group selector */
-static const char *exynos5440_get_group_name(struct pinctrl_dev *pctldev,
- unsigned selector)
-{
- struct exynos5440_pinctrl_priv_data *priv;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- return priv->pin_groups[selector].name;
-}
-
-/* return the pin numbers associated with the specified group */
-static int exynos5440_get_group_pins(struct pinctrl_dev *pctldev,
- unsigned selector, const unsigned **pins, unsigned *num_pins)
-{
- struct exynos5440_pinctrl_priv_data *priv;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- *pins = priv->pin_groups[selector].pins;
- *num_pins = priv->pin_groups[selector].num_pins;
- return 0;
-}
-
-/* create pinctrl_map entries by parsing device tree nodes */
-static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev,
- struct device_node *np, struct pinctrl_map **maps,
- unsigned *nmaps)
-{
- struct device *dev = pctldev->dev;
- struct pinctrl_map *map;
- unsigned long *cfg = NULL;
- char *gname, *fname;
- int cfg_cnt = 0, map_cnt = 0, idx = 0;
-
- /* count the number of config options specfied in the node */
- for (idx = 0; idx < ARRAY_SIZE(pcfgs); idx++)
- if (of_find_property(np, pcfgs[idx].prop_cfg, NULL))
- cfg_cnt++;
-
- /*
- * Find out the number of map entries to create. All the config options
- * can be accomadated into a single config map entry.
- */
- if (cfg_cnt)
- map_cnt = 1;
- if (of_find_property(np, "samsung,exynos5440-pin-function", NULL))
- map_cnt++;
- if (!map_cnt) {
- dev_err(dev, "node %s does not have either config or function "
- "configurations\n", np->name);
- return -EINVAL;
- }
-
- /* Allocate memory for pin-map entries */
- map = kzalloc(sizeof(*map) * map_cnt, GFP_KERNEL);
- if (!map) {
- dev_err(dev, "could not alloc memory for pin-maps\n");
- return -ENOMEM;
- }
- *nmaps = 0;
-
- /*
- * Allocate memory for pin group name. The pin group name is derived
- * from the node name from which these map entries are be created.
- */
- gname = kzalloc(strlen(np->name) + GSUFFIX_LEN, GFP_KERNEL);
- if (!gname) {
- dev_err(dev, "failed to alloc memory for group name\n");
- goto free_map;
- }
- snprintf(gname, strlen(np->name) + 4, "%s%s", np->name, GROUP_SUFFIX);
-
- /*
- * don't have config options? then skip over to creating function
- * map entries.
- */
- if (!cfg_cnt)
- goto skip_cfgs;
-
- /* Allocate memory for config entries */
- cfg = kzalloc(sizeof(*cfg) * cfg_cnt, GFP_KERNEL);
- if (!cfg) {
- dev_err(dev, "failed to alloc memory for configs\n");
- goto free_gname;
- }
-
- /* Prepare a list of config settings */
- for (idx = 0, cfg_cnt = 0; idx < ARRAY_SIZE(pcfgs); idx++) {
- u32 value;
- if (!of_property_read_u32(np, pcfgs[idx].prop_cfg, &value))
- cfg[cfg_cnt++] =
- PINCFG_PACK(pcfgs[idx].cfg_type, value);
- }
-
- /* create the config map entry */
- map[*nmaps].data.configs.group_or_pin = gname;
- map[*nmaps].data.configs.configs = cfg;
- map[*nmaps].data.configs.num_configs = cfg_cnt;
- map[*nmaps].type = PIN_MAP_TYPE_CONFIGS_GROUP;
- *nmaps += 1;
-
-skip_cfgs:
- /* create the function map entry */
- if (of_find_property(np, "samsung,exynos5440-pin-function", NULL)) {
- fname = kzalloc(strlen(np->name) + FSUFFIX_LEN, GFP_KERNEL);
- if (!fname) {
- dev_err(dev, "failed to alloc memory for func name\n");
- goto free_cfg;
- }
- snprintf(fname, strlen(np->name) + 4, "%s%s", np->name,
- FUNCTION_SUFFIX);
-
- map[*nmaps].data.mux.group = gname;
- map[*nmaps].data.mux.function = fname;
- map[*nmaps].type = PIN_MAP_TYPE_MUX_GROUP;
- *nmaps += 1;
- }
-
- *maps = map;
- return 0;
-
-free_cfg:
- kfree(cfg);
-free_gname:
- kfree(gname);
-free_map:
- kfree(map);
- return -ENOMEM;
-}
-
-/* free the memory allocated to hold the pin-map table */
-static void exynos5440_dt_free_map(struct pinctrl_dev *pctldev,
- struct pinctrl_map *map, unsigned num_maps)
-{
- int idx;
-
- for (idx = 0; idx < num_maps; idx++) {
- if (map[idx].type == PIN_MAP_TYPE_MUX_GROUP) {
- kfree(map[idx].data.mux.function);
- if (!idx)
- kfree(map[idx].data.mux.group);
- } else if (map->type == PIN_MAP_TYPE_CONFIGS_GROUP) {
- kfree(map[idx].data.configs.configs);
- if (!idx)
- kfree(map[idx].data.configs.group_or_pin);
- }
- };
-
- kfree(map);
-}
-
-/* list of pinctrl callbacks for the pinctrl core */
-static const struct pinctrl_ops exynos5440_pctrl_ops = {
- .get_groups_count = exynos5440_get_group_count,
- .get_group_name = exynos5440_get_group_name,
- .get_group_pins = exynos5440_get_group_pins,
- .dt_node_to_map = exynos5440_dt_node_to_map,
- .dt_free_map = exynos5440_dt_free_map,
-};
-
-/* check if the selector is a valid pin function selector */
-static int exynos5440_get_functions_count(struct pinctrl_dev *pctldev)
-{
- struct exynos5440_pinctrl_priv_data *priv;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- return priv->nr_functions;
-}
-
-/* return the name of the pin function specified */
-static const char *exynos5440_pinmux_get_fname(struct pinctrl_dev *pctldev,
- unsigned selector)
-{
- struct exynos5440_pinctrl_priv_data *priv;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- return priv->pmx_functions[selector].name;
-}
-
-/* return the groups associated for the specified function selector */
-static int exynos5440_pinmux_get_groups(struct pinctrl_dev *pctldev,
- unsigned selector, const char * const **groups,
- unsigned * const num_groups)
-{
- struct exynos5440_pinctrl_priv_data *priv;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- *groups = priv->pmx_functions[selector].groups;
- *num_groups = priv->pmx_functions[selector].num_groups;
- return 0;
-}
-
-/* enable or disable a pinmux function */
-static void exynos5440_pinmux_setup(struct pinctrl_dev *pctldev, unsigned selector,
- unsigned group, bool enable)
-{
- struct exynos5440_pinctrl_priv_data *priv;
- void __iomem *base;
- u32 function;
- u32 data;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- base = priv->reg_base;
- function = priv->pmx_functions[selector].function;
-
- data = readl(base + GPIO_MUX);
- if (enable)
- data |= (1 << function);
- else
- data &= ~(1 << function);
- writel(data, base + GPIO_MUX);
-}
-
-/* enable a specified pinmux by writing to registers */
-static int exynos5440_pinmux_enable(struct pinctrl_dev *pctldev, unsigned selector,
- unsigned group)
-{
- exynos5440_pinmux_setup(pctldev, selector, group, true);
- return 0;
-}
-
-/*
- * The calls to gpio_direction_output() and gpio_direction_input()
- * leads to this function call (via the pinctrl_gpio_direction_{input|output}()
- * function called from the gpiolib interface).
- */
-static int exynos5440_pinmux_gpio_set_direction(struct pinctrl_dev *pctldev,
- struct pinctrl_gpio_range *range, unsigned offset, bool input)
-{
- return 0;
-}
-
-/* list of pinmux callbacks for the pinmux vertical in pinctrl core */
-static const struct pinmux_ops exynos5440_pinmux_ops = {
- .get_functions_count = exynos5440_get_functions_count,
- .get_function_name = exynos5440_pinmux_get_fname,
- .get_function_groups = exynos5440_pinmux_get_groups,
- .enable = exynos5440_pinmux_enable,
- .gpio_set_direction = exynos5440_pinmux_gpio_set_direction,
-};
-
-/* set the pin config settings for a specified pin */
-static int exynos5440_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *configs,
- unsigned num_configs)
-{
- struct exynos5440_pinctrl_priv_data *priv;
- void __iomem *base;
- enum pincfg_type cfg_type;
- u32 cfg_value;
- u32 data;
- int i;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- base = priv->reg_base;
-
- for (i = 0; i < num_configs; i++) {
- cfg_type = PINCFG_UNPACK_TYPE(configs[i]);
- cfg_value = PINCFG_UNPACK_VALUE(configs[i]);
-
- switch (cfg_type) {
- case PINCFG_TYPE_PUD:
- /* first set pull enable/disable bit */
- data = readl(base + GPIO_PE);
- data &= ~(1 << pin);
- if (cfg_value)
- data |= (1 << pin);
- writel(data, base + GPIO_PE);
-
- /* then set pull up/down bit */
- data = readl(base + GPIO_PS);
- data &= ~(1 << pin);
- if (cfg_value == 2)
- data |= (1 << pin);
- writel(data, base + GPIO_PS);
- break;
-
- case PINCFG_TYPE_DRV:
- /* set the first bit of the drive strength */
- data = readl(base + GPIO_DS0);
- data &= ~(1 << pin);
- data |= ((cfg_value & 1) << pin);
- writel(data, base + GPIO_DS0);
- cfg_value >>= 1;
-
- /* set the second bit of the driver strength */
- data = readl(base + GPIO_DS1);
- data &= ~(1 << pin);
- data |= ((cfg_value & 1) << pin);
- writel(data, base + GPIO_DS1);
- break;
- case PINCFG_TYPE_SKEW_RATE:
- data = readl(base + GPIO_SR);
- data &= ~(1 << pin);
- data |= ((cfg_value & 1) << pin);
- writel(data, base + GPIO_SR);
- break;
- case PINCFG_TYPE_INPUT_TYPE:
- data = readl(base + GPIO_TYPE);
- data &= ~(1 << pin);
- data |= ((cfg_value & 1) << pin);
- writel(data, base + GPIO_TYPE);
- break;
- default:
- WARN_ON(1);
- return -EINVAL;
- }
- } /* for each config */
-
- return 0;
-}
-
-/* get the pin config settings for a specified pin */
-static int exynos5440_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *config)
-{
- struct exynos5440_pinctrl_priv_data *priv;
- void __iomem *base;
- enum pincfg_type cfg_type = PINCFG_UNPACK_TYPE(*config);
- u32 data;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- base = priv->reg_base;
-
- switch (cfg_type) {
- case PINCFG_TYPE_PUD:
- data = readl(base + GPIO_PE);
- data = (data >> pin) & 1;
- if (!data)
- *config = 0;
- else
- *config = ((readl(base + GPIO_PS) >> pin) & 1) + 1;
- break;
- case PINCFG_TYPE_DRV:
- data = readl(base + GPIO_DS0);
- data = (data >> pin) & 1;
- *config = data;
- data = readl(base + GPIO_DS1);
- data = (data >> pin) & 1;
- *config |= (data << 1);
- break;
- case PINCFG_TYPE_SKEW_RATE:
- data = readl(base + GPIO_SR);
- *config = (data >> pin) & 1;
- break;
- case PINCFG_TYPE_INPUT_TYPE:
- data = readl(base + GPIO_TYPE);
- *config = (data >> pin) & 1;
- break;
- default:
- WARN_ON(1);
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* set the pin config settings for a specified pin group */
-static int exynos5440_pinconf_group_set(struct pinctrl_dev *pctldev,
- unsigned group, unsigned long *configs,
- unsigned num_configs)
-{
- struct exynos5440_pinctrl_priv_data *priv;
- const unsigned int *pins;
- unsigned int cnt;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- pins = priv->pin_groups[group].pins;
-
- for (cnt = 0; cnt < priv->pin_groups[group].num_pins; cnt++)
- exynos5440_pinconf_set(pctldev, pins[cnt], configs,
- num_configs);
-
- return 0;
-}
-
-/* get the pin config settings for a specified pin group */
-static int exynos5440_pinconf_group_get(struct pinctrl_dev *pctldev,
- unsigned int group, unsigned long *config)
-{
- struct exynos5440_pinctrl_priv_data *priv;
- const unsigned int *pins;
-
- priv = pinctrl_dev_get_drvdata(pctldev);
- pins = priv->pin_groups[group].pins;
- exynos5440_pinconf_get(pctldev, pins[0], config);
- return 0;
-}
-
-/* list of pinconfig callbacks for pinconfig vertical in the pinctrl code */
-static const struct pinconf_ops exynos5440_pinconf_ops = {
- .pin_config_get = exynos5440_pinconf_get,
- .pin_config_set = exynos5440_pinconf_set,
- .pin_config_group_get = exynos5440_pinconf_group_get,
- .pin_config_group_set = exynos5440_pinconf_group_set,
-};
-
-/* gpiolib gpio_set callback function */
-static void exynos5440_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
-{
- struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
- void __iomem *base = priv->reg_base;
- u32 data;
-
- data = readl(base + GPIO_VAL);
- data &= ~(1 << offset);
- if (value)
- data |= 1 << offset;
- writel(data, base + GPIO_VAL);
-}
-
-/* gpiolib gpio_get callback function */
-static int exynos5440_gpio_get(struct gpio_chip *gc, unsigned offset)
-{
- struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
- void __iomem *base = priv->reg_base;
- u32 data;
-
- data = readl(base + GPIO_IN);
- data >>= offset;
- data &= 1;
- return data;
-}
-
-/* gpiolib gpio_direction_input callback function */
-static int exynos5440_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
-{
- struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
- void __iomem *base = priv->reg_base;
- u32 data;
-
- /* first disable the data output enable on this pin */
- data = readl(base + GPIO_OE);
- data &= ~(1 << offset);
- writel(data, base + GPIO_OE);
-
- /* now enable input on this pin */
- data = readl(base + GPIO_IE);
- data |= 1 << offset;
- writel(data, base + GPIO_IE);
- return 0;
-}
-
-/* gpiolib gpio_direction_output callback function */
-static int exynos5440_gpio_direction_output(struct gpio_chip *gc, unsigned offset,
- int value)
-{
- struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
- void __iomem *base = priv->reg_base;
- u32 data;
-
- exynos5440_gpio_set(gc, offset, value);
-
- /* first disable the data input enable on this pin */
- data = readl(base + GPIO_IE);
- data &= ~(1 << offset);
- writel(data, base + GPIO_IE);
-
- /* now enable output on this pin */
- data = readl(base + GPIO_OE);
- data |= 1 << offset;
- writel(data, base + GPIO_OE);
- return 0;
-}
-
-/* gpiolib gpio_to_irq callback function */
-static int exynos5440_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
-{
- struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
- unsigned int virq;
-
- if (offset < 16 || offset > 23)
- return -ENXIO;
-
- if (!priv->irq_domain)
- return -ENXIO;
-
- virq = irq_create_mapping(priv->irq_domain, offset - 16);
- return virq ? : -ENXIO;
-}
-
-/* parse the pin numbers listed in the 'samsung,exynos5440-pins' property */
-static int exynos5440_pinctrl_parse_dt_pins(struct platform_device *pdev,
- struct device_node *cfg_np, unsigned int **pin_list,
- unsigned int *npins)
-{
- struct device *dev = &pdev->dev;
- struct property *prop;
-
- prop = of_find_property(cfg_np, "samsung,exynos5440-pins", NULL);
- if (!prop)
- return -ENOENT;
-
- *npins = prop->length / sizeof(unsigned long);
- if (!*npins) {
- dev_err(dev, "invalid pin list in %s node", cfg_np->name);
- return -EINVAL;
- }
-
- *pin_list = devm_kzalloc(dev, *npins * sizeof(**pin_list), GFP_KERNEL);
- if (!*pin_list) {
- dev_err(dev, "failed to allocate memory for pin list\n");
- return -ENOMEM;
- }
-
- return of_property_read_u32_array(cfg_np, "samsung,exynos5440-pins",
- *pin_list, *npins);
-}
-
-/*
- * Parse the information about all the available pin groups and pin functions
- * from device node of the pin-controller.
- */
-static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev,
- struct exynos5440_pinctrl_priv_data *priv)
-{
- struct device *dev = &pdev->dev;
- struct device_node *dev_np = dev->of_node;
- struct device_node *cfg_np;
- struct exynos5440_pin_group *groups, *grp;
- struct exynos5440_pmx_func *functions, *func;
- unsigned *pin_list;
- unsigned int npins, grp_cnt, func_idx = 0;
- char *gname, *fname;
- int ret;
-
- grp_cnt = of_get_child_count(dev_np);
- if (!grp_cnt)
- return -EINVAL;
-
- groups = devm_kzalloc(dev, grp_cnt * sizeof(*groups), GFP_KERNEL);
- if (!groups) {
- dev_err(dev, "failed allocate memory for ping group list\n");
- return -EINVAL;
- }
- grp = groups;
-
- functions = devm_kzalloc(dev, grp_cnt * sizeof(*functions), GFP_KERNEL);
- if (!functions) {
- dev_err(dev, "failed to allocate memory for function list\n");
- return -EINVAL;
- }
- func = functions;
-
- /*
- * Iterate over all the child nodes of the pin controller node
- * and create pin groups and pin function lists.
- */
- for_each_child_of_node(dev_np, cfg_np) {
- u32 function;
-
- ret = exynos5440_pinctrl_parse_dt_pins(pdev, cfg_np,
- &pin_list, &npins);
- if (ret) {
- gname = NULL;
- goto skip_to_pin_function;
- }
-
- /* derive pin group name from the node name */
- gname = devm_kzalloc(dev, strlen(cfg_np->name) + GSUFFIX_LEN,
- GFP_KERNEL);
- if (!gname) {
- dev_err(dev, "failed to alloc memory for group name\n");
- return -ENOMEM;
- }
- snprintf(gname, strlen(cfg_np->name) + 4, "%s%s", cfg_np->name,
- GROUP_SUFFIX);
-
- grp->name = gname;
- grp->pins = pin_list;
- grp->num_pins = npins;
- grp++;
-
-skip_to_pin_function:
- ret = of_property_read_u32(cfg_np, "samsung,exynos5440-pin-function",
- &function);
- if (ret)
- continue;
-
- /* derive function name from the node name */
- fname = devm_kzalloc(dev, strlen(cfg_np->name) + FSUFFIX_LEN,
- GFP_KERNEL);
- if (!fname) {
- dev_err(dev, "failed to alloc memory for func name\n");
- return -ENOMEM;
- }
- snprintf(fname, strlen(cfg_np->name) + 4, "%s%s", cfg_np->name,
- FUNCTION_SUFFIX);
-
- func->name = fname;
- func->groups = devm_kzalloc(dev, sizeof(char *), GFP_KERNEL);
- if (!func->groups) {
- dev_err(dev, "failed to alloc memory for group list "
- "in pin function");
- return -ENOMEM;
- }
- func->groups[0] = gname;
- func->num_groups = gname ? 1 : 0;
- func->function = function;
- func++;
- func_idx++;
- }
-
- priv->pin_groups = groups;
- priv->nr_groups = grp_cnt;
- priv->pmx_functions = functions;
- priv->nr_functions = func_idx;
- return 0;
-}
-
-/* register the pinctrl interface with the pinctrl subsystem */
-static int exynos5440_pinctrl_register(struct platform_device *pdev,
- struct exynos5440_pinctrl_priv_data *priv)
-{
- struct device *dev = &pdev->dev;
- struct pinctrl_desc *ctrldesc;
- struct pinctrl_dev *pctl_dev;
- struct pinctrl_pin_desc *pindesc, *pdesc;
- struct pinctrl_gpio_range grange;
- char *pin_names;
- int pin, ret;
-
- ctrldesc = devm_kzalloc(dev, sizeof(*ctrldesc), GFP_KERNEL);
- if (!ctrldesc) {
- dev_err(dev, "could not allocate memory for pinctrl desc\n");
- return -ENOMEM;
- }
-
- ctrldesc->name = "exynos5440-pinctrl";
- ctrldesc->owner = THIS_MODULE;
- ctrldesc->pctlops = &exynos5440_pctrl_ops;
- ctrldesc->pmxops = &exynos5440_pinmux_ops;
- ctrldesc->confops = &exynos5440_pinconf_ops;
-
- pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
- EXYNOS5440_MAX_PINS, GFP_KERNEL);
- if (!pindesc) {
- dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
- return -ENOMEM;
- }
- ctrldesc->pins = pindesc;
- ctrldesc->npins = EXYNOS5440_MAX_PINS;
-
- /* dynamically populate the pin number and pin name for pindesc */
- for (pin = 0, pdesc = pindesc; pin < ctrldesc->npins; pin++, pdesc++)
- pdesc->number = pin;
-
- /*
- * allocate space for storing the dynamically generated names for all
- * the pins which belong to this pin-controller.
- */
- pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH *
- ctrldesc->npins, GFP_KERNEL);
- if (!pin_names) {
- dev_err(&pdev->dev, "mem alloc for pin names failed\n");
- return -ENOMEM;
- }
-
- /* for each pin, set the name of the pin */
- for (pin = 0; pin < ctrldesc->npins; pin++) {
- snprintf(pin_names, 6, "gpio%02d", pin);
- pdesc = pindesc + pin;
- pdesc->name = pin_names;
- pin_names += PIN_NAME_LENGTH;
- }
-
- ret = exynos5440_pinctrl_parse_dt(pdev, priv);
- if (ret)
- return ret;
-
- pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, priv);
- if (!pctl_dev) {
- dev_err(&pdev->dev, "could not register pinctrl driver\n");
- return -EINVAL;
- }
-
- grange.name = "exynos5440-pctrl-gpio-range";
- grange.id = 0;
- grange.base = 0;
- grange.npins = EXYNOS5440_MAX_PINS;
- grange.gc = priv->gc;
- pinctrl_add_gpio_range(pctl_dev, &grange);
- return 0;
-}
-
-/* register the gpiolib interface with the gpiolib subsystem */
-static int exynos5440_gpiolib_register(struct platform_device *pdev,
- struct exynos5440_pinctrl_priv_data *priv)
-{
- struct gpio_chip *gc;
- int ret;
-
- gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
- if (!gc) {
- dev_err(&pdev->dev, "mem alloc for gpio_chip failed\n");
- return -ENOMEM;
- }
-
- priv->gc = gc;
- gc->base = 0;
- gc->ngpio = EXYNOS5440_MAX_PINS;
- gc->dev = &pdev->dev;
- gc->set = exynos5440_gpio_set;
- gc->get = exynos5440_gpio_get;
- gc->direction_input = exynos5440_gpio_direction_input;
- gc->direction_output = exynos5440_gpio_direction_output;
- gc->to_irq = exynos5440_gpio_to_irq;
- gc->label = "gpiolib-exynos5440";
- gc->owner = THIS_MODULE;
- ret = gpiochip_add(gc);
- if (ret) {
- dev_err(&pdev->dev, "failed to register gpio_chip %s, error "
- "code: %d\n", gc->label, ret);
- return ret;
- }
-
- return 0;
-}
-
-/* unregister the gpiolib interface with the gpiolib subsystem */
-static int exynos5440_gpiolib_unregister(struct platform_device *pdev,
- struct exynos5440_pinctrl_priv_data *priv)
-{
- int ret = gpiochip_remove(priv->gc);
- if (ret) {
- dev_err(&pdev->dev, "gpio chip remove failed\n");
- return ret;
- }
- return 0;
-}
-
-static void exynos5440_gpio_irq_unmask(struct irq_data *irqd)
-{
- struct exynos5440_pinctrl_priv_data *d;
- unsigned long gpio_int;
-
- d = irq_data_get_irq_chip_data(irqd);
- gpio_int = readl(d->reg_base + GPIO_INT);
- gpio_int |= 1 << irqd->hwirq;
- writel(gpio_int, d->reg_base + GPIO_INT);
-}
-
-static void exynos5440_gpio_irq_mask(struct irq_data *irqd)
-{
- struct exynos5440_pinctrl_priv_data *d;
- unsigned long gpio_int;
-
- d = irq_data_get_irq_chip_data(irqd);
- gpio_int = readl(d->reg_base + GPIO_INT);
- gpio_int &= ~(1 << irqd->hwirq);
- writel(gpio_int, d->reg_base + GPIO_INT);
-}
-
-/* irq_chip for gpio interrupts */
-static struct irq_chip exynos5440_gpio_irq_chip = {
- .name = "exynos5440_gpio_irq_chip",
- .irq_unmask = exynos5440_gpio_irq_unmask,
- .irq_mask = exynos5440_gpio_irq_mask,
-};
-
-/* interrupt handler for GPIO interrupts 0..7 */
-static irqreturn_t exynos5440_gpio_irq(int irq, void *data)
-{
- struct exynos5440_gpio_intr_data *intd = data;
- struct exynos5440_pinctrl_priv_data *d = intd->priv;
- int virq;
-
- virq = irq_linear_revmap(d->irq_domain, intd->gpio_int);
- if (!virq)
- return IRQ_NONE;
- generic_handle_irq(virq);
- return IRQ_HANDLED;
-}
-
-static int exynos5440_gpio_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct exynos5440_pinctrl_priv_data *d = h->host_data;
-
- irq_set_chip_data(virq, d);
- irq_set_chip_and_handler(virq, &exynos5440_gpio_irq_chip,
- handle_level_irq);
- set_irq_flags(virq, IRQF_VALID);
- return 0;
-}
-
-/* irq domain callbacks for gpio interrupt controller */
-static const struct irq_domain_ops exynos5440_gpio_irqd_ops = {
- .map = exynos5440_gpio_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-/* setup handling of gpio interrupts */
-static int exynos5440_gpio_irq_init(struct platform_device *pdev,
- struct exynos5440_pinctrl_priv_data *priv)
-{
- struct device *dev = &pdev->dev;
- struct exynos5440_gpio_intr_data *intd;
- int i, irq, ret;
-
- intd = devm_kzalloc(dev, sizeof(*intd) * EXYNOS5440_MAX_GPIO_INT,
- GFP_KERNEL);
- if (!intd) {
- dev_err(dev, "failed to allocate memory for gpio intr data\n");
- return -ENOMEM;
- }
-
- for (i = 0; i < EXYNOS5440_MAX_GPIO_INT; i++) {
- irq = irq_of_parse_and_map(dev->of_node, i);
- if (irq <= 0) {
- dev_err(dev, "irq parsing failed\n");
- return -EINVAL;
- }
-
- intd->gpio_int = i;
- intd->priv = priv;
- ret = devm_request_irq(dev, irq, exynos5440_gpio_irq,
- 0, dev_name(dev), intd++);
- if (ret) {
- dev_err(dev, "irq request failed\n");
- return -ENXIO;
- }
- }
-
- priv->irq_domain = irq_domain_add_linear(dev->of_node,
- EXYNOS5440_MAX_GPIO_INT,
- &exynos5440_gpio_irqd_ops, priv);
- if (!priv->irq_domain) {
- dev_err(dev, "failed to create irq domain\n");
- return -ENXIO;
- }
-
- return 0;
-}
-
-static int exynos5440_pinctrl_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct exynos5440_pinctrl_priv_data *priv;
- struct resource *res;
- int ret;
-
- if (!dev->of_node) {
- dev_err(dev, "device tree node not found\n");
- return -ENODEV;
- }
-
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv) {
- dev_err(dev, "could not allocate memory for private data\n");
- return -ENOMEM;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- priv->reg_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(priv->reg_base))
- return PTR_ERR(priv->reg_base);
-
- ret = exynos5440_gpiolib_register(pdev, priv);
- if (ret)
- return ret;
-
- ret = exynos5440_pinctrl_register(pdev, priv);
- if (ret) {
- exynos5440_gpiolib_unregister(pdev, priv);
- return ret;
- }
-
- ret = exynos5440_gpio_irq_init(pdev, priv);
- if (ret) {
- dev_err(dev, "failed to setup gpio interrupts\n");
- return ret;
- }
-
- platform_set_drvdata(pdev, priv);
- dev_info(dev, "EXYNOS5440 pinctrl driver registered\n");
- return 0;
-}
-
-static const struct of_device_id exynos5440_pinctrl_dt_match[] = {
- { .compatible = "samsung,exynos5440-pinctrl" },
- {},
-};
-MODULE_DEVICE_TABLE(of, exynos5440_pinctrl_dt_match);
-
-static struct platform_driver exynos5440_pinctrl_driver = {
- .probe = exynos5440_pinctrl_probe,
- .driver = {
- .name = "exynos5440-pinctrl",
- .owner = THIS_MODULE,
- .of_match_table = exynos5440_pinctrl_dt_match,
- },
-};
-
-static int __init exynos5440_pinctrl_drv_register(void)
-{
- return platform_driver_register(&exynos5440_pinctrl_driver);
-}
-postcore_initcall(exynos5440_pinctrl_drv_register);
-
-static void __exit exynos5440_pinctrl_drv_unregister(void)
-{
- platform_driver_unregister(&exynos5440_pinctrl_driver);
-}
-module_exit(exynos5440_pinctrl_drv_unregister);
-
-MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
-MODULE_DESCRIPTION("Samsung EXYNOS5440 SoC pinctrl driver");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * S3C24XX specific support for Samsung pinctrl/gpiolib driver.
- *
- * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This file contains the SamsungS3C24XX specific information required by the
- * Samsung pinctrl/gpiolib driver. It also includes the implementation of
- * external gpio and wakeup interrupt support.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/irqdomain.h>
-#include <linux/irq.h>
-#include <linux/of_irq.h>
-#include <linux/irqchip/chained_irq.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-
-#include "pinctrl-samsung.h"
-
-#define NUM_EINT 24
-#define NUM_EINT_IRQ 6
-#define EINT_MAX_PER_GROUP 8
-
-#define EINTPEND_REG 0xa8
-#define EINTMASK_REG 0xa4
-
-#define EINT_GROUP(i) ((int)((i) / EINT_MAX_PER_GROUP))
-#define EINT_REG(i) ((EINT_GROUP(i) * 4) + 0x88)
-#define EINT_OFFS(i) ((i) % EINT_MAX_PER_GROUP * 4)
-
-#define EINT_LEVEL_LOW 0
-#define EINT_LEVEL_HIGH 1
-#define EINT_EDGE_FALLING 2
-#define EINT_EDGE_RISING 4
-#define EINT_EDGE_BOTH 6
-#define EINT_MASK 0xf
-
-static struct samsung_pin_bank_type bank_type_1bit = {
- .fld_width = { 1, 1, },
- .reg_offset = { 0x00, 0x04, },
-};
-
-static struct samsung_pin_bank_type bank_type_2bit = {
- .fld_width = { 2, 1, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, },
-};
-
-#define PIN_BANK_A(pins, reg, id) \
- { \
- .type = &bank_type_1bit, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_NONE, \
- .name = id \
- }
-
-#define PIN_BANK_2BIT(pins, reg, id) \
- { \
- .type = &bank_type_2bit, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_NONE, \
- .name = id \
- }
-
-#define PIN_BANK_2BIT_EINTW(pins, reg, id, eoffs, emask)\
- { \
- .type = &bank_type_2bit, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_WKUP, \
- .eint_func = 2, \
- .eint_mask = emask, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-/**
- * struct s3c24xx_eint_data: EINT common data
- * @drvdata: pin controller driver data
- * @domains: IRQ domains of particular EINT interrupts
- * @parents: mapped parent irqs in the main interrupt controller
- */
-struct s3c24xx_eint_data {
- struct samsung_pinctrl_drv_data *drvdata;
- struct irq_domain *domains[NUM_EINT];
- int parents[NUM_EINT_IRQ];
-};
-
-/**
- * struct s3c24xx_eint_domain_data: per irq-domain data
- * @bank: pin bank related to the domain
- * @eint_data: common data
- * eint0_3_parent_only: live eints 0-3 only in the main intc
- */
-struct s3c24xx_eint_domain_data {
- struct samsung_pin_bank *bank;
- struct s3c24xx_eint_data *eint_data;
- bool eint0_3_parent_only;
-};
-
-static int s3c24xx_eint_get_trigger(unsigned int type)
-{
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- return EINT_EDGE_RISING;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- return EINT_EDGE_FALLING;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- return EINT_EDGE_BOTH;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- return EINT_LEVEL_HIGH;
- break;
- case IRQ_TYPE_LEVEL_LOW:
- return EINT_LEVEL_LOW;
- break;
- default:
- return -EINVAL;
- }
-}
-
-static void s3c24xx_eint_set_handler(unsigned int irq, unsigned int type)
-{
- /* Edge- and level-triggered interrupts need different handlers */
- if (type & IRQ_TYPE_EDGE_BOTH)
- __irq_set_handler_locked(irq, handle_edge_irq);
- else
- __irq_set_handler_locked(irq, handle_level_irq);
-}
-
-static void s3c24xx_eint_set_function(struct samsung_pinctrl_drv_data *d,
- struct samsung_pin_bank *bank, int pin)
-{
- struct samsung_pin_bank_type *bank_type = bank->type;
- unsigned long flags;
- void __iomem *reg;
- u8 shift;
- u32 mask;
- u32 val;
-
- /* Make sure that pin is configured as interrupt */
- reg = d->virt_base + bank->pctl_offset;
- shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC];
- mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
-
- spin_lock_irqsave(&bank->slock, flags);
-
- val = readl(reg);
- val &= ~(mask << shift);
- val |= bank->eint_func << shift;
- writel(val, reg);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-}
-
-static int s3c24xx_eint_type(struct irq_data *data, unsigned int type)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- int index = bank->eint_offset + data->hwirq;
- void __iomem *reg;
- int trigger;
- u8 shift;
- u32 val;
-
- trigger = s3c24xx_eint_get_trigger(type);
- if (trigger < 0) {
- dev_err(d->dev, "unsupported external interrupt type\n");
- return -EINVAL;
- }
-
- s3c24xx_eint_set_handler(data->irq, type);
-
- /* Set up interrupt trigger */
- reg = d->virt_base + EINT_REG(index);
- shift = EINT_OFFS(index);
-
- val = readl(reg);
- val &= ~(EINT_MASK << shift);
- val |= trigger << shift;
- writel(val, reg);
-
- s3c24xx_eint_set_function(d, bank, data->hwirq);
-
- return 0;
-}
-
-/* Handling of EINTs 0-3 on all except S3C2412 and S3C2413 */
-
-static void s3c2410_eint0_3_ack(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data;
- struct s3c24xx_eint_data *eint_data = ddata->eint_data;
- int parent_irq = eint_data->parents[data->hwirq];
- struct irq_chip *parent_chip = irq_get_chip(parent_irq);
-
- parent_chip->irq_ack(irq_get_irq_data(parent_irq));
-}
-
-static void s3c2410_eint0_3_mask(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data;
- struct s3c24xx_eint_data *eint_data = ddata->eint_data;
- int parent_irq = eint_data->parents[data->hwirq];
- struct irq_chip *parent_chip = irq_get_chip(parent_irq);
-
- parent_chip->irq_mask(irq_get_irq_data(parent_irq));
-}
-
-static void s3c2410_eint0_3_unmask(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data;
- struct s3c24xx_eint_data *eint_data = ddata->eint_data;
- int parent_irq = eint_data->parents[data->hwirq];
- struct irq_chip *parent_chip = irq_get_chip(parent_irq);
-
- parent_chip->irq_unmask(irq_get_irq_data(parent_irq));
-}
-
-static struct irq_chip s3c2410_eint0_3_chip = {
- .name = "s3c2410-eint0_3",
- .irq_ack = s3c2410_eint0_3_ack,
- .irq_mask = s3c2410_eint0_3_mask,
- .irq_unmask = s3c2410_eint0_3_unmask,
- .irq_set_type = s3c24xx_eint_type,
-};
-
-static void s3c2410_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
-{
- struct irq_data *data = irq_desc_get_irq_data(desc);
- struct s3c24xx_eint_data *eint_data = irq_get_handler_data(irq);
- unsigned int virq;
-
- /* the first 4 eints have a simple 1 to 1 mapping */
- virq = irq_linear_revmap(eint_data->domains[data->hwirq], data->hwirq);
- /* Something must be really wrong if an unmapped EINT is unmasked */
- BUG_ON(!virq);
-
- generic_handle_irq(virq);
-}
-
-/* Handling of EINTs 0-3 on S3C2412 and S3C2413 */
-
-static void s3c2412_eint0_3_ack(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
-
- unsigned long bitval = 1UL << data->hwirq;
- writel(bitval, d->virt_base + EINTPEND_REG);
-}
-
-static void s3c2412_eint0_3_mask(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned long mask;
-
- mask = readl(d->virt_base + EINTMASK_REG);
- mask |= (1UL << data->hwirq);
- writel(mask, d->virt_base + EINTMASK_REG);
-}
-
-static void s3c2412_eint0_3_unmask(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned long mask;
-
- mask = readl(d->virt_base + EINTMASK_REG);
- mask &= ~(1UL << data->hwirq);
- writel(mask, d->virt_base + EINTMASK_REG);
-}
-
-static struct irq_chip s3c2412_eint0_3_chip = {
- .name = "s3c2412-eint0_3",
- .irq_ack = s3c2412_eint0_3_ack,
- .irq_mask = s3c2412_eint0_3_mask,
- .irq_unmask = s3c2412_eint0_3_unmask,
- .irq_set_type = s3c24xx_eint_type,
-};
-
-static void s3c2412_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- struct irq_data *data = irq_desc_get_irq_data(desc);
- struct s3c24xx_eint_data *eint_data = irq_get_handler_data(irq);
- unsigned int virq;
-
- chained_irq_enter(chip, desc);
-
- /* the first 4 eints have a simple 1 to 1 mapping */
- virq = irq_linear_revmap(eint_data->domains[data->hwirq], data->hwirq);
- /* Something must be really wrong if an unmapped EINT is unmasked */
- BUG_ON(!virq);
-
- generic_handle_irq(virq);
-
- chained_irq_exit(chip, desc);
-}
-
-/* Handling of all other eints */
-
-static void s3c24xx_eint_ack(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned char index = bank->eint_offset + data->hwirq;
-
- writel(1UL << index, d->virt_base + EINTPEND_REG);
-}
-
-static void s3c24xx_eint_mask(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned char index = bank->eint_offset + data->hwirq;
- unsigned long mask;
-
- mask = readl(d->virt_base + EINTMASK_REG);
- mask |= (1UL << index);
- writel(mask, d->virt_base + EINTMASK_REG);
-}
-
-static void s3c24xx_eint_unmask(struct irq_data *data)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned char index = bank->eint_offset + data->hwirq;
- unsigned long mask;
-
- mask = readl(d->virt_base + EINTMASK_REG);
- mask &= ~(1UL << index);
- writel(mask, d->virt_base + EINTMASK_REG);
-}
-
-static struct irq_chip s3c24xx_eint_chip = {
- .name = "s3c-eint",
- .irq_ack = s3c24xx_eint_ack,
- .irq_mask = s3c24xx_eint_mask,
- .irq_unmask = s3c24xx_eint_unmask,
- .irq_set_type = s3c24xx_eint_type,
-};
-
-static inline void s3c24xx_demux_eint(unsigned int irq, struct irq_desc *desc,
- u32 offset, u32 range)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- struct s3c24xx_eint_data *data = irq_get_handler_data(irq);
- struct samsung_pinctrl_drv_data *d = data->drvdata;
- unsigned int pend, mask;
-
- chained_irq_enter(chip, desc);
-
- pend = readl(d->virt_base + EINTPEND_REG);
- mask = readl(d->virt_base + EINTMASK_REG);
-
- pend &= ~mask;
- pend &= range;
-
- while (pend) {
- unsigned int virq;
-
- irq = __ffs(pend);
- pend &= ~(1 << irq);
- virq = irq_linear_revmap(data->domains[irq], irq - offset);
- /* Something is really wrong if an unmapped EINT is unmasked */
- BUG_ON(!virq);
-
- generic_handle_irq(virq);
- }
-
- chained_irq_exit(chip, desc);
-}
-
-static void s3c24xx_demux_eint4_7(unsigned int irq, struct irq_desc *desc)
-{
- s3c24xx_demux_eint(irq, desc, 0, 0xf0);
-}
-
-static void s3c24xx_demux_eint8_23(unsigned int irq, struct irq_desc *desc)
-{
- s3c24xx_demux_eint(irq, desc, 8, 0xffff00);
-}
-
-static irq_flow_handler_t s3c2410_eint_handlers[NUM_EINT_IRQ] = {
- s3c2410_demux_eint0_3,
- s3c2410_demux_eint0_3,
- s3c2410_demux_eint0_3,
- s3c2410_demux_eint0_3,
- s3c24xx_demux_eint4_7,
- s3c24xx_demux_eint8_23,
-};
-
-static irq_flow_handler_t s3c2412_eint_handlers[NUM_EINT_IRQ] = {
- s3c2412_demux_eint0_3,
- s3c2412_demux_eint0_3,
- s3c2412_demux_eint0_3,
- s3c2412_demux_eint0_3,
- s3c24xx_demux_eint4_7,
- s3c24xx_demux_eint8_23,
-};
-
-static int s3c24xx_gpf_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct s3c24xx_eint_domain_data *ddata = h->host_data;
- struct samsung_pin_bank *bank = ddata->bank;
-
- if (!(bank->eint_mask & (1 << (bank->eint_offset + hw))))
- return -EINVAL;
-
- if (hw <= 3) {
- if (ddata->eint0_3_parent_only)
- irq_set_chip_and_handler(virq, &s3c2410_eint0_3_chip,
- handle_edge_irq);
- else
- irq_set_chip_and_handler(virq, &s3c2412_eint0_3_chip,
- handle_edge_irq);
- } else {
- irq_set_chip_and_handler(virq, &s3c24xx_eint_chip,
- handle_edge_irq);
- }
- irq_set_chip_data(virq, bank);
- set_irq_flags(virq, IRQF_VALID);
- return 0;
-}
-
-static const struct irq_domain_ops s3c24xx_gpf_irq_ops = {
- .map = s3c24xx_gpf_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-static int s3c24xx_gpg_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct s3c24xx_eint_domain_data *ddata = h->host_data;
- struct samsung_pin_bank *bank = ddata->bank;
-
- if (!(bank->eint_mask & (1 << (bank->eint_offset + hw))))
- return -EINVAL;
-
- irq_set_chip_and_handler(virq, &s3c24xx_eint_chip, handle_edge_irq);
- irq_set_chip_data(virq, bank);
- set_irq_flags(virq, IRQF_VALID);
- return 0;
-}
-
-static const struct irq_domain_ops s3c24xx_gpg_irq_ops = {
- .map = s3c24xx_gpg_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-static const struct of_device_id s3c24xx_eint_irq_ids[] = {
- { .compatible = "samsung,s3c2410-wakeup-eint", .data = (void *)1 },
- { .compatible = "samsung,s3c2412-wakeup-eint", .data = (void *)0 },
- { }
-};
-
-static int s3c24xx_eint_init(struct samsung_pinctrl_drv_data *d)
-{
- struct device *dev = d->dev;
- const struct of_device_id *match;
- struct device_node *eint_np = NULL;
- struct device_node *np;
- struct samsung_pin_bank *bank;
- struct s3c24xx_eint_data *eint_data;
- const struct irq_domain_ops *ops;
- unsigned int i;
- bool eint0_3_parent_only;
- irq_flow_handler_t *handlers;
-
- for_each_child_of_node(dev->of_node, np) {
- match = of_match_node(s3c24xx_eint_irq_ids, np);
- if (match) {
- eint_np = np;
- eint0_3_parent_only = (bool)match->data;
- break;
- }
- }
- if (!eint_np)
- return -ENODEV;
-
- eint_data = devm_kzalloc(dev, sizeof(*eint_data), GFP_KERNEL);
- if (!eint_data)
- return -ENOMEM;
-
- eint_data->drvdata = d;
-
- handlers = eint0_3_parent_only ? s3c2410_eint_handlers
- : s3c2412_eint_handlers;
- for (i = 0; i < NUM_EINT_IRQ; ++i) {
- unsigned int irq;
-
- irq = irq_of_parse_and_map(eint_np, i);
- if (!irq) {
- dev_err(dev, "failed to get wakeup EINT IRQ %d\n", i);
- return -ENXIO;
- }
-
- eint_data->parents[i] = irq;
- irq_set_chained_handler(irq, handlers[i]);
- irq_set_handler_data(irq, eint_data);
- }
-
- bank = d->ctrl->pin_banks;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- struct s3c24xx_eint_domain_data *ddata;
- unsigned int mask;
- unsigned int irq;
- unsigned int pin;
-
- if (bank->eint_type != EINT_TYPE_WKUP)
- continue;
-
- ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);
- if (!ddata)
- return -ENOMEM;
-
- ddata->bank = bank;
- ddata->eint_data = eint_data;
- ddata->eint0_3_parent_only = eint0_3_parent_only;
-
- ops = (bank->eint_offset == 0) ? &s3c24xx_gpf_irq_ops
- : &s3c24xx_gpg_irq_ops;
-
- bank->irq_domain = irq_domain_add_linear(bank->of_node,
- bank->nr_pins, ops, ddata);
- if (!bank->irq_domain) {
- dev_err(dev, "wkup irq domain add failed\n");
- return -ENXIO;
- }
-
- irq = bank->eint_offset;
- mask = bank->eint_mask;
- for (pin = 0; mask; ++pin, mask >>= 1) {
- if (irq >= NUM_EINT)
- break;
- if (!(mask & 1))
- continue;
- eint_data->domains[irq] = bank->irq_domain;
- ++irq;
- }
- }
-
- return 0;
-}
-
-static struct samsung_pin_bank s3c2412_pin_banks[] = {
- PIN_BANK_A(23, 0x000, "gpa"),
- PIN_BANK_2BIT(11, 0x010, "gpb"),
- PIN_BANK_2BIT(16, 0x020, "gpc"),
- PIN_BANK_2BIT(16, 0x030, "gpd"),
- PIN_BANK_2BIT(16, 0x040, "gpe"),
- PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
- PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00),
- PIN_BANK_2BIT(11, 0x070, "gph"),
- PIN_BANK_2BIT(13, 0x080, "gpj"),
-};
-
-struct samsung_pin_ctrl s3c2412_pin_ctrl[] = {
- {
- .pin_banks = s3c2412_pin_banks,
- .nr_banks = ARRAY_SIZE(s3c2412_pin_banks),
- .eint_wkup_init = s3c24xx_eint_init,
- .label = "S3C2412-GPIO",
- },
-};
-
-static struct samsung_pin_bank s3c2416_pin_banks[] = {
- PIN_BANK_A(27, 0x000, "gpa"),
- PIN_BANK_2BIT(11, 0x010, "gpb"),
- PIN_BANK_2BIT(16, 0x020, "gpc"),
- PIN_BANK_2BIT(16, 0x030, "gpd"),
- PIN_BANK_2BIT(16, 0x040, "gpe"),
- PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
- PIN_BANK_2BIT_EINTW(8, 0x060, "gpg", 8, 0xff00),
- PIN_BANK_2BIT(15, 0x070, "gph"),
- PIN_BANK_2BIT(16, 0x0e0, "gpk"),
- PIN_BANK_2BIT(14, 0x0f0, "gpl"),
- PIN_BANK_2BIT(2, 0x100, "gpm"),
-};
-
-struct samsung_pin_ctrl s3c2416_pin_ctrl[] = {
- {
- .pin_banks = s3c2416_pin_banks,
- .nr_banks = ARRAY_SIZE(s3c2416_pin_banks),
- .eint_wkup_init = s3c24xx_eint_init,
- .label = "S3C2416-GPIO",
- },
-};
-
-static struct samsung_pin_bank s3c2440_pin_banks[] = {
- PIN_BANK_A(25, 0x000, "gpa"),
- PIN_BANK_2BIT(11, 0x010, "gpb"),
- PIN_BANK_2BIT(16, 0x020, "gpc"),
- PIN_BANK_2BIT(16, 0x030, "gpd"),
- PIN_BANK_2BIT(16, 0x040, "gpe"),
- PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
- PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00),
- PIN_BANK_2BIT(11, 0x070, "gph"),
- PIN_BANK_2BIT(13, 0x0d0, "gpj"),
-};
-
-struct samsung_pin_ctrl s3c2440_pin_ctrl[] = {
- {
- .pin_banks = s3c2440_pin_banks,
- .nr_banks = ARRAY_SIZE(s3c2440_pin_banks),
- .eint_wkup_init = s3c24xx_eint_init,
- .label = "S3C2440-GPIO",
- },
-};
-
-static struct samsung_pin_bank s3c2450_pin_banks[] = {
- PIN_BANK_A(28, 0x000, "gpa"),
- PIN_BANK_2BIT(11, 0x010, "gpb"),
- PIN_BANK_2BIT(16, 0x020, "gpc"),
- PIN_BANK_2BIT(16, 0x030, "gpd"),
- PIN_BANK_2BIT(16, 0x040, "gpe"),
- PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
- PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00),
- PIN_BANK_2BIT(15, 0x070, "gph"),
- PIN_BANK_2BIT(16, 0x0d0, "gpj"),
- PIN_BANK_2BIT(16, 0x0e0, "gpk"),
- PIN_BANK_2BIT(15, 0x0f0, "gpl"),
- PIN_BANK_2BIT(2, 0x100, "gpm"),
-};
-
-struct samsung_pin_ctrl s3c2450_pin_ctrl[] = {
- {
- .pin_banks = s3c2450_pin_banks,
- .nr_banks = ARRAY_SIZE(s3c2450_pin_banks),
- .eint_wkup_init = s3c24xx_eint_init,
- .label = "S3C2450-GPIO",
- },
-};
+++ /dev/null
-/*
- * S3C64xx specific support for pinctrl-samsung driver.
- *
- * Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
- *
- * Based on pinctrl-exynos.c, please see the file for original copyrights.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This file contains the Samsung S3C64xx specific information required by the
- * the Samsung pinctrl/gpiolib driver. It also includes the implementation of
- * external gpio and wakeup interrupt support.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/irqdomain.h>
-#include <linux/irq.h>
-#include <linux/of_irq.h>
-#include <linux/io.h>
-#include <linux/irqchip/chained_irq.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-
-#include "pinctrl-samsung.h"
-
-#define NUM_EINT0 28
-#define NUM_EINT0_IRQ 4
-#define EINT_MAX_PER_REG 16
-#define EINT_MAX_PER_GROUP 16
-
-/* External GPIO and wakeup interrupt related definitions */
-#define SVC_GROUP_SHIFT 4
-#define SVC_GROUP_MASK 0xf
-#define SVC_NUM_MASK 0xf
-#define SVC_GROUP(x) ((x >> SVC_GROUP_SHIFT) & \
- SVC_GROUP_MASK)
-
-#define EINT12CON_REG 0x200
-#define EINT12MASK_REG 0x240
-#define EINT12PEND_REG 0x260
-
-#define EINT_OFFS(i) ((i) % (2 * EINT_MAX_PER_GROUP))
-#define EINT_GROUP(i) ((i) / EINT_MAX_PER_GROUP)
-#define EINT_REG(g) (4 * ((g) / 2))
-
-#define EINTCON_REG(i) (EINT12CON_REG + EINT_REG(EINT_GROUP(i)))
-#define EINTMASK_REG(i) (EINT12MASK_REG + EINT_REG(EINT_GROUP(i)))
-#define EINTPEND_REG(i) (EINT12PEND_REG + EINT_REG(EINT_GROUP(i)))
-
-#define SERVICE_REG 0x284
-#define SERVICEPEND_REG 0x288
-
-#define EINT0CON0_REG 0x900
-#define EINT0MASK_REG 0x920
-#define EINT0PEND_REG 0x924
-
-/* S3C64xx specific external interrupt trigger types */
-#define EINT_LEVEL_LOW 0
-#define EINT_LEVEL_HIGH 1
-#define EINT_EDGE_FALLING 2
-#define EINT_EDGE_RISING 4
-#define EINT_EDGE_BOTH 6
-#define EINT_CON_MASK 0xF
-#define EINT_CON_LEN 4
-
-static struct samsung_pin_bank_type bank_type_4bit_off = {
- .fld_width = { 4, 1, 2, 0, 2, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, 0, 0x0c, 0x10, },
-};
-
-static struct samsung_pin_bank_type bank_type_4bit_alive = {
- .fld_width = { 4, 1, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, },
-};
-
-static struct samsung_pin_bank_type bank_type_4bit2_off = {
- .fld_width = { 4, 1, 2, 0, 2, 2, },
- .reg_offset = { 0x00, 0x08, 0x0c, 0, 0x10, 0x14, },
-};
-
-static struct samsung_pin_bank_type bank_type_4bit2_alive = {
- .fld_width = { 4, 1, 2, },
- .reg_offset = { 0x00, 0x08, 0x0c, },
-};
-
-static struct samsung_pin_bank_type bank_type_2bit_off = {
- .fld_width = { 2, 1, 2, 0, 2, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, 0, 0x0c, 0x10, },
-};
-
-static struct samsung_pin_bank_type bank_type_2bit_alive = {
- .fld_width = { 2, 1, 2, },
- .reg_offset = { 0x00, 0x04, 0x08, },
-};
-
-#define PIN_BANK_4BIT(pins, reg, id) \
- { \
- .type = &bank_type_4bit_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_NONE, \
- .name = id \
- }
-
-#define PIN_BANK_4BIT_EINTG(pins, reg, id, eoffs) \
- { \
- .type = &bank_type_4bit_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_GPIO, \
- .eint_func = 7, \
- .eint_mask = (1 << (pins)) - 1, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-#define PIN_BANK_4BIT_EINTW(pins, reg, id, eoffs, emask) \
- { \
- .type = &bank_type_4bit_alive,\
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_WKUP, \
- .eint_func = 3, \
- .eint_mask = emask, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-#define PIN_BANK_4BIT2_EINTG(pins, reg, id, eoffs) \
- { \
- .type = &bank_type_4bit2_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_GPIO, \
- .eint_func = 7, \
- .eint_mask = (1 << (pins)) - 1, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-#define PIN_BANK_4BIT2_EINTW(pins, reg, id, eoffs, emask) \
- { \
- .type = &bank_type_4bit2_alive,\
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_WKUP, \
- .eint_func = 3, \
- .eint_mask = emask, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-#define PIN_BANK_4BIT2_ALIVE(pins, reg, id) \
- { \
- .type = &bank_type_4bit2_alive,\
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_NONE, \
- .name = id \
- }
-
-#define PIN_BANK_2BIT(pins, reg, id) \
- { \
- .type = &bank_type_2bit_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_NONE, \
- .name = id \
- }
-
-#define PIN_BANK_2BIT_EINTG(pins, reg, id, eoffs, emask) \
- { \
- .type = &bank_type_2bit_off, \
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_GPIO, \
- .eint_func = 3, \
- .eint_mask = emask, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-#define PIN_BANK_2BIT_EINTW(pins, reg, id, eoffs) \
- { \
- .type = &bank_type_2bit_alive,\
- .pctl_offset = reg, \
- .nr_pins = pins, \
- .eint_type = EINT_TYPE_WKUP, \
- .eint_func = 2, \
- .eint_mask = (1 << (pins)) - 1, \
- .eint_offset = eoffs, \
- .name = id \
- }
-
-/**
- * struct s3c64xx_eint0_data: EINT0 common data
- * @drvdata: pin controller driver data
- * @domains: IRQ domains of particular EINT0 interrupts
- * @pins: pin offsets inside of banks of particular EINT0 interrupts
- */
-struct s3c64xx_eint0_data {
- struct samsung_pinctrl_drv_data *drvdata;
- struct irq_domain *domains[NUM_EINT0];
- u8 pins[NUM_EINT0];
-};
-
-/**
- * struct s3c64xx_eint0_domain_data: EINT0 per-domain data
- * @bank: pin bank related to the domain
- * @eints: EINT0 interrupts related to the domain
- */
-struct s3c64xx_eint0_domain_data {
- struct samsung_pin_bank *bank;
- u8 eints[];
-};
-
-/**
- * struct s3c64xx_eint_gpio_data: GPIO EINT data
- * @drvdata: pin controller driver data
- * @domains: array of domains related to EINT interrupt groups
- */
-struct s3c64xx_eint_gpio_data {
- struct samsung_pinctrl_drv_data *drvdata;
- struct irq_domain *domains[];
-};
-
-/*
- * Common functions for S3C64xx EINT configuration
- */
-
-static int s3c64xx_irq_get_trigger(unsigned int type)
-{
- int trigger;
-
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- trigger = EINT_EDGE_RISING;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- trigger = EINT_EDGE_FALLING;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- trigger = EINT_EDGE_BOTH;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- trigger = EINT_LEVEL_HIGH;
- break;
- case IRQ_TYPE_LEVEL_LOW:
- trigger = EINT_LEVEL_LOW;
- break;
- default:
- return -EINVAL;
- }
-
- return trigger;
-}
-
-static void s3c64xx_irq_set_handler(unsigned int irq, unsigned int type)
-{
- /* Edge- and level-triggered interrupts need different handlers */
- if (type & IRQ_TYPE_EDGE_BOTH)
- __irq_set_handler_locked(irq, handle_edge_irq);
- else
- __irq_set_handler_locked(irq, handle_level_irq);
-}
-
-static void s3c64xx_irq_set_function(struct samsung_pinctrl_drv_data *d,
- struct samsung_pin_bank *bank, int pin)
-{
- struct samsung_pin_bank_type *bank_type = bank->type;
- unsigned long flags;
- void __iomem *reg;
- u8 shift;
- u32 mask;
- u32 val;
-
- /* Make sure that pin is configured as interrupt */
- reg = d->virt_base + bank->pctl_offset;
- shift = pin;
- if (bank_type->fld_width[PINCFG_TYPE_FUNC] * shift >= 32) {
- /* 4-bit bank type with 2 con regs */
- reg += 4;
- shift -= 8;
- }
-
- shift = shift * bank_type->fld_width[PINCFG_TYPE_FUNC];
- mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
-
- spin_lock_irqsave(&bank->slock, flags);
-
- val = readl(reg);
- val &= ~(mask << shift);
- val |= bank->eint_func << shift;
- writel(val, reg);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-}
-
-/*
- * Functions for EINT GPIO configuration (EINT groups 1-9)
- */
-
-static inline void s3c64xx_gpio_irq_set_mask(struct irq_data *irqd, bool mask)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned char index = EINT_OFFS(bank->eint_offset) + irqd->hwirq;
- void __iomem *reg = d->virt_base + EINTMASK_REG(bank->eint_offset);
- u32 val;
-
- val = readl(reg);
- if (mask)
- val |= 1 << index;
- else
- val &= ~(1 << index);
- writel(val, reg);
-}
-
-static void s3c64xx_gpio_irq_unmask(struct irq_data *irqd)
-{
- s3c64xx_gpio_irq_set_mask(irqd, false);
-}
-
-static void s3c64xx_gpio_irq_mask(struct irq_data *irqd)
-{
- s3c64xx_gpio_irq_set_mask(irqd, true);
-}
-
-static void s3c64xx_gpio_irq_ack(struct irq_data *irqd)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- unsigned char index = EINT_OFFS(bank->eint_offset) + irqd->hwirq;
- void __iomem *reg = d->virt_base + EINTPEND_REG(bank->eint_offset);
-
- writel(1 << index, reg);
-}
-
-static int s3c64xx_gpio_irq_set_type(struct irq_data *irqd, unsigned int type)
-{
- struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- void __iomem *reg;
- int trigger;
- u8 shift;
- u32 val;
-
- trigger = s3c64xx_irq_get_trigger(type);
- if (trigger < 0) {
- pr_err("unsupported external interrupt type\n");
- return -EINVAL;
- }
-
- s3c64xx_irq_set_handler(irqd->irq, type);
-
- /* Set up interrupt trigger */
- reg = d->virt_base + EINTCON_REG(bank->eint_offset);
- shift = EINT_OFFS(bank->eint_offset) + irqd->hwirq;
- shift = 4 * (shift / 4); /* 4 EINTs per trigger selector */
-
- val = readl(reg);
- val &= ~(EINT_CON_MASK << shift);
- val |= trigger << shift;
- writel(val, reg);
-
- s3c64xx_irq_set_function(d, bank, irqd->hwirq);
-
- return 0;
-}
-
-/*
- * irq_chip for gpio interrupts.
- */
-static struct irq_chip s3c64xx_gpio_irq_chip = {
- .name = "GPIO",
- .irq_unmask = s3c64xx_gpio_irq_unmask,
- .irq_mask = s3c64xx_gpio_irq_mask,
- .irq_ack = s3c64xx_gpio_irq_ack,
- .irq_set_type = s3c64xx_gpio_irq_set_type,
-};
-
-static int s3c64xx_gpio_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct samsung_pin_bank *bank = h->host_data;
-
- if (!(bank->eint_mask & (1 << hw)))
- return -EINVAL;
-
- irq_set_chip_and_handler(virq,
- &s3c64xx_gpio_irq_chip, handle_level_irq);
- irq_set_chip_data(virq, bank);
- set_irq_flags(virq, IRQF_VALID);
-
- return 0;
-}
-
-/*
- * irq domain callbacks for external gpio interrupt controller.
- */
-static const struct irq_domain_ops s3c64xx_gpio_irqd_ops = {
- .map = s3c64xx_gpio_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-static void s3c64xx_eint_gpio_irq(unsigned int irq, struct irq_desc *desc)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- struct s3c64xx_eint_gpio_data *data = irq_get_handler_data(irq);
- struct samsung_pinctrl_drv_data *drvdata = data->drvdata;
-
- chained_irq_enter(chip, desc);
-
- do {
- unsigned int svc;
- unsigned int group;
- unsigned int pin;
- unsigned int virq;
-
- svc = readl(drvdata->virt_base + SERVICE_REG);
- group = SVC_GROUP(svc);
- pin = svc & SVC_NUM_MASK;
-
- if (!group)
- break;
-
- /* Group 1 is used for two pin banks */
- if (group == 1) {
- if (pin < 8)
- group = 0;
- else
- pin -= 8;
- }
-
- virq = irq_linear_revmap(data->domains[group], pin);
- /*
- * Something must be really wrong if an unmapped EINT
- * was unmasked...
- */
- BUG_ON(!virq);
-
- generic_handle_irq(virq);
- } while (1);
-
- chained_irq_exit(chip, desc);
-}
-
-/**
- * s3c64xx_eint_gpio_init() - setup handling of external gpio interrupts.
- * @d: driver data of samsung pinctrl driver.
- */
-static int s3c64xx_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
-{
- struct s3c64xx_eint_gpio_data *data;
- struct samsung_pin_bank *bank;
- struct device *dev = d->dev;
- unsigned int nr_domains;
- unsigned int i;
-
- if (!d->irq) {
- dev_err(dev, "irq number not available\n");
- return -EINVAL;
- }
-
- nr_domains = 0;
- bank = d->ctrl->pin_banks;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- unsigned int nr_eints;
- unsigned int mask;
-
- if (bank->eint_type != EINT_TYPE_GPIO)
- continue;
-
- mask = bank->eint_mask;
- nr_eints = fls(mask);
-
- bank->irq_domain = irq_domain_add_linear(bank->of_node,
- nr_eints, &s3c64xx_gpio_irqd_ops, bank);
- if (!bank->irq_domain) {
- dev_err(dev, "gpio irq domain add failed\n");
- return -ENXIO;
- }
-
- ++nr_domains;
- }
-
- data = devm_kzalloc(dev, sizeof(*data)
- + nr_domains * sizeof(*data->domains), GFP_KERNEL);
- if (!data) {
- dev_err(dev, "failed to allocate handler data\n");
- return -ENOMEM;
- }
- data->drvdata = d;
-
- bank = d->ctrl->pin_banks;
- nr_domains = 0;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- if (bank->eint_type != EINT_TYPE_GPIO)
- continue;
-
- data->domains[nr_domains++] = bank->irq_domain;
- }
-
- irq_set_chained_handler(d->irq, s3c64xx_eint_gpio_irq);
- irq_set_handler_data(d->irq, data);
-
- return 0;
-}
-
-/*
- * Functions for configuration of EINT0 wake-up interrupts
- */
-
-static inline void s3c64xx_eint0_irq_set_mask(struct irq_data *irqd, bool mask)
-{
- struct s3c64xx_eint0_domain_data *ddata =
- irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = ddata->bank->drvdata;
- u32 val;
-
- val = readl(d->virt_base + EINT0MASK_REG);
- if (mask)
- val |= 1 << ddata->eints[irqd->hwirq];
- else
- val &= ~(1 << ddata->eints[irqd->hwirq]);
- writel(val, d->virt_base + EINT0MASK_REG);
-}
-
-static void s3c64xx_eint0_irq_unmask(struct irq_data *irqd)
-{
- s3c64xx_eint0_irq_set_mask(irqd, false);
-}
-
-static void s3c64xx_eint0_irq_mask(struct irq_data *irqd)
-{
- s3c64xx_eint0_irq_set_mask(irqd, true);
-}
-
-static void s3c64xx_eint0_irq_ack(struct irq_data *irqd)
-{
- struct s3c64xx_eint0_domain_data *ddata =
- irq_data_get_irq_chip_data(irqd);
- struct samsung_pinctrl_drv_data *d = ddata->bank->drvdata;
-
- writel(1 << ddata->eints[irqd->hwirq],
- d->virt_base + EINT0PEND_REG);
-}
-
-static int s3c64xx_eint0_irq_set_type(struct irq_data *irqd, unsigned int type)
-{
- struct s3c64xx_eint0_domain_data *ddata =
- irq_data_get_irq_chip_data(irqd);
- struct samsung_pin_bank *bank = ddata->bank;
- struct samsung_pinctrl_drv_data *d = bank->drvdata;
- void __iomem *reg;
- int trigger;
- u8 shift;
- u32 val;
-
- trigger = s3c64xx_irq_get_trigger(type);
- if (trigger < 0) {
- pr_err("unsupported external interrupt type\n");
- return -EINVAL;
- }
-
- s3c64xx_irq_set_handler(irqd->irq, type);
-
- /* Set up interrupt trigger */
- reg = d->virt_base + EINT0CON0_REG;
- shift = ddata->eints[irqd->hwirq];
- if (shift >= EINT_MAX_PER_REG) {
- reg += 4;
- shift -= EINT_MAX_PER_REG;
- }
- shift = EINT_CON_LEN * (shift / 2);
-
- val = readl(reg);
- val &= ~(EINT_CON_MASK << shift);
- val |= trigger << shift;
- writel(val, reg);
-
- s3c64xx_irq_set_function(d, bank, irqd->hwirq);
-
- return 0;
-}
-
-/*
- * irq_chip for wakeup interrupts
- */
-static struct irq_chip s3c64xx_eint0_irq_chip = {
- .name = "EINT0",
- .irq_unmask = s3c64xx_eint0_irq_unmask,
- .irq_mask = s3c64xx_eint0_irq_mask,
- .irq_ack = s3c64xx_eint0_irq_ack,
- .irq_set_type = s3c64xx_eint0_irq_set_type,
-};
-
-static inline void s3c64xx_irq_demux_eint(unsigned int irq,
- struct irq_desc *desc, u32 range)
-{
- struct irq_chip *chip = irq_get_chip(irq);
- struct s3c64xx_eint0_data *data = irq_get_handler_data(irq);
- struct samsung_pinctrl_drv_data *drvdata = data->drvdata;
- unsigned int pend, mask;
-
- chained_irq_enter(chip, desc);
-
- pend = readl(drvdata->virt_base + EINT0PEND_REG);
- mask = readl(drvdata->virt_base + EINT0MASK_REG);
-
- pend = pend & range & ~mask;
- pend &= range;
-
- while (pend) {
- unsigned int virq;
-
- irq = fls(pend) - 1;
- pend &= ~(1 << irq);
-
- virq = irq_linear_revmap(data->domains[irq], data->pins[irq]);
- /*
- * Something must be really wrong if an unmapped EINT
- * was unmasked...
- */
- BUG_ON(!virq);
-
- generic_handle_irq(virq);
- }
-
- chained_irq_exit(chip, desc);
-}
-
-static void s3c64xx_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
-{
- s3c64xx_irq_demux_eint(irq, desc, 0xf);
-}
-
-static void s3c64xx_demux_eint4_11(unsigned int irq, struct irq_desc *desc)
-{
- s3c64xx_irq_demux_eint(irq, desc, 0xff0);
-}
-
-static void s3c64xx_demux_eint12_19(unsigned int irq, struct irq_desc *desc)
-{
- s3c64xx_irq_demux_eint(irq, desc, 0xff000);
-}
-
-static void s3c64xx_demux_eint20_27(unsigned int irq, struct irq_desc *desc)
-{
- s3c64xx_irq_demux_eint(irq, desc, 0xff00000);
-}
-
-static irq_flow_handler_t s3c64xx_eint0_handlers[NUM_EINT0_IRQ] = {
- s3c64xx_demux_eint0_3,
- s3c64xx_demux_eint4_11,
- s3c64xx_demux_eint12_19,
- s3c64xx_demux_eint20_27,
-};
-
-static int s3c64xx_eint0_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct s3c64xx_eint0_domain_data *ddata = h->host_data;
- struct samsung_pin_bank *bank = ddata->bank;
-
- if (!(bank->eint_mask & (1 << hw)))
- return -EINVAL;
-
- irq_set_chip_and_handler(virq,
- &s3c64xx_eint0_irq_chip, handle_level_irq);
- irq_set_chip_data(virq, ddata);
- set_irq_flags(virq, IRQF_VALID);
-
- return 0;
-}
-
-/*
- * irq domain callbacks for external wakeup interrupt controller.
- */
-static const struct irq_domain_ops s3c64xx_eint0_irqd_ops = {
- .map = s3c64xx_eint0_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-/* list of external wakeup controllers supported */
-static const struct of_device_id s3c64xx_eint0_irq_ids[] = {
- { .compatible = "samsung,s3c64xx-wakeup-eint", },
- { }
-};
-
-/**
- * s3c64xx_eint_eint0_init() - setup handling of external wakeup interrupts.
- * @d: driver data of samsung pinctrl driver.
- */
-static int s3c64xx_eint_eint0_init(struct samsung_pinctrl_drv_data *d)
-{
- struct device *dev = d->dev;
- struct device_node *eint0_np = NULL;
- struct device_node *np;
- struct samsung_pin_bank *bank;
- struct s3c64xx_eint0_data *data;
- unsigned int i;
-
- for_each_child_of_node(dev->of_node, np) {
- if (of_match_node(s3c64xx_eint0_irq_ids, np)) {
- eint0_np = np;
- break;
- }
- }
- if (!eint0_np)
- return -ENODEV;
-
- data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
- if (!data) {
- dev_err(dev, "could not allocate memory for wkup eint data\n");
- return -ENOMEM;
- }
- data->drvdata = d;
-
- for (i = 0; i < NUM_EINT0_IRQ; ++i) {
- unsigned int irq;
-
- irq = irq_of_parse_and_map(eint0_np, i);
- if (!irq) {
- dev_err(dev, "failed to get wakeup EINT IRQ %d\n", i);
- return -ENXIO;
- }
-
- irq_set_chained_handler(irq, s3c64xx_eint0_handlers[i]);
- irq_set_handler_data(irq, data);
- }
-
- bank = d->ctrl->pin_banks;
- for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
- struct s3c64xx_eint0_domain_data *ddata;
- unsigned int nr_eints;
- unsigned int mask;
- unsigned int irq;
- unsigned int pin;
-
- if (bank->eint_type != EINT_TYPE_WKUP)
- continue;
-
- mask = bank->eint_mask;
- nr_eints = fls(mask);
-
- ddata = devm_kzalloc(dev,
- sizeof(*ddata) + nr_eints, GFP_KERNEL);
- if (!ddata) {
- dev_err(dev, "failed to allocate domain data\n");
- return -ENOMEM;
- }
- ddata->bank = bank;
-
- bank->irq_domain = irq_domain_add_linear(bank->of_node,
- nr_eints, &s3c64xx_eint0_irqd_ops, ddata);
- if (!bank->irq_domain) {
- dev_err(dev, "wkup irq domain add failed\n");
- return -ENXIO;
- }
-
- irq = bank->eint_offset;
- mask = bank->eint_mask;
- for (pin = 0; mask; ++pin, mask >>= 1) {
- if (!(mask & 1))
- continue;
- data->domains[irq] = bank->irq_domain;
- data->pins[irq] = pin;
- ddata->eints[pin] = irq;
- ++irq;
- }
- }
-
- return 0;
-}
-
-/* pin banks of s3c64xx pin-controller 0 */
-static struct samsung_pin_bank s3c64xx_pin_banks0[] = {
- PIN_BANK_4BIT_EINTG(8, 0x000, "gpa", 0),
- PIN_BANK_4BIT_EINTG(7, 0x020, "gpb", 8),
- PIN_BANK_4BIT_EINTG(8, 0x040, "gpc", 16),
- PIN_BANK_4BIT_EINTG(5, 0x060, "gpd", 32),
- PIN_BANK_4BIT(5, 0x080, "gpe"),
- PIN_BANK_2BIT_EINTG(16, 0x0a0, "gpf", 48, 0x3fff),
- PIN_BANK_4BIT_EINTG(7, 0x0c0, "gpg", 64),
- PIN_BANK_4BIT2_EINTG(10, 0x0e0, "gph", 80),
- PIN_BANK_2BIT(16, 0x100, "gpi"),
- PIN_BANK_2BIT(12, 0x120, "gpj"),
- PIN_BANK_4BIT2_ALIVE(16, 0x800, "gpk"),
- PIN_BANK_4BIT2_EINTW(15, 0x810, "gpl", 16, 0x7f00),
- PIN_BANK_4BIT_EINTW(6, 0x820, "gpm", 23, 0x1f),
- PIN_BANK_2BIT_EINTW(16, 0x830, "gpn", 0),
- PIN_BANK_2BIT_EINTG(16, 0x140, "gpo", 96, 0xffff),
- PIN_BANK_2BIT_EINTG(15, 0x160, "gpp", 112, 0x7fff),
- PIN_BANK_2BIT_EINTG(9, 0x180, "gpq", 128, 0x1ff),
-};
-
-/*
- * Samsung pinctrl driver data for S3C64xx SoC. S3C64xx SoC includes
- * one gpio/pin-mux/pinconfig controller.
- */
-struct samsung_pin_ctrl s3c64xx_pin_ctrl[] = {
- {
- /* pin-controller instance 1 data */
- .pin_banks = s3c64xx_pin_banks0,
- .nr_banks = ARRAY_SIZE(s3c64xx_pin_banks0),
- .eint_gpio_init = s3c64xx_eint_gpio_init,
- .eint_wkup_init = s3c64xx_eint_eint0_init,
- .label = "S3C64xx-GPIO",
- },
-};
+++ /dev/null
-/*
- * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's SoC's.
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- * Copyright (c) 2012 Linaro Ltd
- * http://www.linaro.org
- *
- * Author: Thomas Abraham <thomas.ab@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This driver implements the Samsung pinctrl driver. It supports setting up of
- * pinmux and pinconf configurations. The gpiolib interface is also included.
- * External interrupt (gpio and wakeup) support are not included in this driver
- * but provides extensions to which platform specific implementation of the gpio
- * and wakeup interrupts can be hooked to.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/irqdomain.h>
-#include <linux/spinlock.h>
-#include <linux/syscore_ops.h>
-
-#include "core.h"
-#include "pinctrl-samsung.h"
-
-#define GROUP_SUFFIX "-grp"
-#define GSUFFIX_LEN sizeof(GROUP_SUFFIX)
-#define FUNCTION_SUFFIX "-mux"
-#define FSUFFIX_LEN sizeof(FUNCTION_SUFFIX)
-
-/* list of all possible config options supported */
-static struct pin_config {
- const char *property;
- enum pincfg_type param;
-} cfg_params[] = {
- { "samsung,pin-pud", PINCFG_TYPE_PUD },
- { "samsung,pin-drv", PINCFG_TYPE_DRV },
- { "samsung,pin-con-pdn", PINCFG_TYPE_CON_PDN },
- { "samsung,pin-pud-pdn", PINCFG_TYPE_PUD_PDN },
- { "samsung,pin-val", PINCFG_TYPE_DAT },
-};
-
-/* Global list of devices (struct samsung_pinctrl_drv_data) */
-static LIST_HEAD(drvdata_list);
-
-static unsigned int pin_base;
-
-static inline struct samsung_pin_bank *gc_to_pin_bank(struct gpio_chip *gc)
-{
- return container_of(gc, struct samsung_pin_bank, gpio_chip);
-}
-
-static int samsung_get_group_count(struct pinctrl_dev *pctldev)
-{
- struct samsung_pinctrl_drv_data *pmx = pinctrl_dev_get_drvdata(pctldev);
-
- return pmx->nr_groups;
-}
-
-static const char *samsung_get_group_name(struct pinctrl_dev *pctldev,
- unsigned group)
-{
- struct samsung_pinctrl_drv_data *pmx = pinctrl_dev_get_drvdata(pctldev);
-
- return pmx->pin_groups[group].name;
-}
-
-static int samsung_get_group_pins(struct pinctrl_dev *pctldev,
- unsigned group,
- const unsigned **pins,
- unsigned *num_pins)
-{
- struct samsung_pinctrl_drv_data *pmx = pinctrl_dev_get_drvdata(pctldev);
-
- *pins = pmx->pin_groups[group].pins;
- *num_pins = pmx->pin_groups[group].num_pins;
-
- return 0;
-}
-
-static int reserve_map(struct device *dev, struct pinctrl_map **map,
- unsigned *reserved_maps, unsigned *num_maps,
- unsigned reserve)
-{
- unsigned old_num = *reserved_maps;
- unsigned new_num = *num_maps + reserve;
- struct pinctrl_map *new_map;
-
- if (old_num >= new_num)
- return 0;
-
- new_map = krealloc(*map, sizeof(*new_map) * new_num, GFP_KERNEL);
- if (!new_map) {
- dev_err(dev, "krealloc(map) failed\n");
- return -ENOMEM;
- }
-
- memset(new_map + old_num, 0, (new_num - old_num) * sizeof(*new_map));
-
- *map = new_map;
- *reserved_maps = new_num;
-
- return 0;
-}
-
-static int add_map_mux(struct pinctrl_map **map, unsigned *reserved_maps,
- unsigned *num_maps, const char *group,
- const char *function)
-{
- if (WARN_ON(*num_maps == *reserved_maps))
- return -ENOSPC;
-
- (*map)[*num_maps].type = PIN_MAP_TYPE_MUX_GROUP;
- (*map)[*num_maps].data.mux.group = group;
- (*map)[*num_maps].data.mux.function = function;
- (*num_maps)++;
-
- return 0;
-}
-
-static int add_map_configs(struct device *dev, struct pinctrl_map **map,
- unsigned *reserved_maps, unsigned *num_maps,
- const char *group, unsigned long *configs,
- unsigned num_configs)
-{
- unsigned long *dup_configs;
-
- if (WARN_ON(*num_maps == *reserved_maps))
- return -ENOSPC;
-
- dup_configs = kmemdup(configs, num_configs * sizeof(*dup_configs),
- GFP_KERNEL);
- if (!dup_configs) {
- dev_err(dev, "kmemdup(configs) failed\n");
- return -ENOMEM;
- }
-
- (*map)[*num_maps].type = PIN_MAP_TYPE_CONFIGS_GROUP;
- (*map)[*num_maps].data.configs.group_or_pin = group;
- (*map)[*num_maps].data.configs.configs = dup_configs;
- (*map)[*num_maps].data.configs.num_configs = num_configs;
- (*num_maps)++;
-
- return 0;
-}
-
-static int add_config(struct device *dev, unsigned long **configs,
- unsigned *num_configs, unsigned long config)
-{
- unsigned old_num = *num_configs;
- unsigned new_num = old_num + 1;
- unsigned long *new_configs;
-
- new_configs = krealloc(*configs, sizeof(*new_configs) * new_num,
- GFP_KERNEL);
- if (!new_configs) {
- dev_err(dev, "krealloc(configs) failed\n");
- return -ENOMEM;
- }
-
- new_configs[old_num] = config;
-
- *configs = new_configs;
- *num_configs = new_num;
-
- return 0;
-}
-
-static void samsung_dt_free_map(struct pinctrl_dev *pctldev,
- struct pinctrl_map *map,
- unsigned num_maps)
-{
- int i;
-
- for (i = 0; i < num_maps; i++)
- if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
- kfree(map[i].data.configs.configs);
-
- kfree(map);
-}
-
-static int samsung_dt_subnode_to_map(struct samsung_pinctrl_drv_data *drvdata,
- struct device *dev,
- struct device_node *np,
- struct pinctrl_map **map,
- unsigned *reserved_maps,
- unsigned *num_maps)
-{
- int ret, i;
- u32 val;
- unsigned long config;
- unsigned long *configs = NULL;
- unsigned num_configs = 0;
- unsigned reserve;
- struct property *prop;
- const char *group;
- bool has_func = false;
-
- ret = of_property_read_u32(np, "samsung,pin-function", &val);
- if (!ret)
- has_func = true;
-
- for (i = 0; i < ARRAY_SIZE(cfg_params); i++) {
- ret = of_property_read_u32(np, cfg_params[i].property, &val);
- if (!ret) {
- config = PINCFG_PACK(cfg_params[i].param, val);
- ret = add_config(dev, &configs, &num_configs, config);
- if (ret < 0)
- goto exit;
- /* EINVAL=missing, which is fine since it's optional */
- } else if (ret != -EINVAL) {
- dev_err(dev, "could not parse property %s\n",
- cfg_params[i].property);
- }
- }
-
- reserve = 0;
- if (has_func)
- reserve++;
- if (num_configs)
- reserve++;
- ret = of_property_count_strings(np, "samsung,pins");
- if (ret < 0) {
- dev_err(dev, "could not parse property samsung,pins\n");
- goto exit;
- }
- reserve *= ret;
-
- ret = reserve_map(dev, map, reserved_maps, num_maps, reserve);
- if (ret < 0)
- goto exit;
-
- of_property_for_each_string(np, "samsung,pins", prop, group) {
- if (has_func) {
- ret = add_map_mux(map, reserved_maps,
- num_maps, group, np->full_name);
- if (ret < 0)
- goto exit;
- }
-
- if (num_configs) {
- ret = add_map_configs(dev, map, reserved_maps,
- num_maps, group, configs,
- num_configs);
- if (ret < 0)
- goto exit;
- }
- }
-
- ret = 0;
-
-exit:
- kfree(configs);
- return ret;
-}
-
-static int samsung_dt_node_to_map(struct pinctrl_dev *pctldev,
- struct device_node *np_config,
- struct pinctrl_map **map,
- unsigned *num_maps)
-{
- struct samsung_pinctrl_drv_data *drvdata;
- unsigned reserved_maps;
- struct device_node *np;
- int ret;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
-
- reserved_maps = 0;
- *map = NULL;
- *num_maps = 0;
-
- if (!of_get_child_count(np_config))
- return samsung_dt_subnode_to_map(drvdata, pctldev->dev,
- np_config, map,
- &reserved_maps,
- num_maps);
-
- for_each_child_of_node(np_config, np) {
- ret = samsung_dt_subnode_to_map(drvdata, pctldev->dev, np, map,
- &reserved_maps, num_maps);
- if (ret < 0) {
- samsung_dt_free_map(pctldev, *map, *num_maps);
- return ret;
- }
- }
-
- return 0;
-}
-
-/* list of pinctrl callbacks for the pinctrl core */
-static const struct pinctrl_ops samsung_pctrl_ops = {
- .get_groups_count = samsung_get_group_count,
- .get_group_name = samsung_get_group_name,
- .get_group_pins = samsung_get_group_pins,
- .dt_node_to_map = samsung_dt_node_to_map,
- .dt_free_map = samsung_dt_free_map,
-};
-
-/* check if the selector is a valid pin function selector */
-static int samsung_get_functions_count(struct pinctrl_dev *pctldev)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- return drvdata->nr_functions;
-}
-
-/* return the name of the pin function specified */
-static const char *samsung_pinmux_get_fname(struct pinctrl_dev *pctldev,
- unsigned selector)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- return drvdata->pmx_functions[selector].name;
-}
-
-/* return the groups associated for the specified function selector */
-static int samsung_pinmux_get_groups(struct pinctrl_dev *pctldev,
- unsigned selector, const char * const **groups,
- unsigned * const num_groups)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- *groups = drvdata->pmx_functions[selector].groups;
- *num_groups = drvdata->pmx_functions[selector].num_groups;
- return 0;
-}
-
-/*
- * given a pin number that is local to a pin controller, find out the pin bank
- * and the register base of the pin bank.
- */
-static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata,
- unsigned pin, void __iomem **reg, u32 *offset,
- struct samsung_pin_bank **bank)
-{
- struct samsung_pin_bank *b;
-
- b = drvdata->ctrl->pin_banks;
-
- while ((pin >= b->pin_base) &&
- ((b->pin_base + b->nr_pins - 1) < pin))
- b++;
-
- *reg = drvdata->virt_base + b->pctl_offset;
- *offset = pin - b->pin_base;
- if (bank)
- *bank = b;
-}
-
-/* enable or disable a pinmux function */
-static void samsung_pinmux_setup(struct pinctrl_dev *pctldev, unsigned selector,
- unsigned group, bool enable)
-{
- struct samsung_pinctrl_drv_data *drvdata;
- struct samsung_pin_bank_type *type;
- struct samsung_pin_bank *bank;
- void __iomem *reg;
- u32 mask, shift, data, pin_offset;
- unsigned long flags;
- const struct samsung_pmx_func *func;
- const struct samsung_pin_group *grp;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- func = &drvdata->pmx_functions[selector];
- grp = &drvdata->pin_groups[group];
-
- pin_to_reg_bank(drvdata, grp->pins[0] - drvdata->ctrl->base,
- ®, &pin_offset, &bank);
- type = bank->type;
- mask = (1 << type->fld_width[PINCFG_TYPE_FUNC]) - 1;
- shift = pin_offset * type->fld_width[PINCFG_TYPE_FUNC];
- if (shift >= 32) {
- /* Some banks have two config registers */
- shift -= 32;
- reg += 4;
- }
-
- spin_lock_irqsave(&bank->slock, flags);
-
- data = readl(reg + type->reg_offset[PINCFG_TYPE_FUNC]);
- data &= ~(mask << shift);
- if (enable)
- data |= func->val << shift;
- writel(data, reg + type->reg_offset[PINCFG_TYPE_FUNC]);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-}
-
-/* enable a specified pinmux by writing to registers */
-static int samsung_pinmux_enable(struct pinctrl_dev *pctldev, unsigned selector,
- unsigned group)
-{
- samsung_pinmux_setup(pctldev, selector, group, true);
- return 0;
-}
-
-/* list of pinmux callbacks for the pinmux vertical in pinctrl core */
-static const struct pinmux_ops samsung_pinmux_ops = {
- .get_functions_count = samsung_get_functions_count,
- .get_function_name = samsung_pinmux_get_fname,
- .get_function_groups = samsung_pinmux_get_groups,
- .enable = samsung_pinmux_enable,
-};
-
-/* set or get the pin config settings for a specified pin */
-static int samsung_pinconf_rw(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *config, bool set)
-{
- struct samsung_pinctrl_drv_data *drvdata;
- struct samsung_pin_bank_type *type;
- struct samsung_pin_bank *bank;
- void __iomem *reg_base;
- enum pincfg_type cfg_type = PINCFG_UNPACK_TYPE(*config);
- u32 data, width, pin_offset, mask, shift;
- u32 cfg_value, cfg_reg;
- unsigned long flags;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- pin_to_reg_bank(drvdata, pin - drvdata->ctrl->base, ®_base,
- &pin_offset, &bank);
- type = bank->type;
-
- if (cfg_type >= PINCFG_TYPE_NUM || !type->fld_width[cfg_type])
- return -EINVAL;
-
- width = type->fld_width[cfg_type];
- cfg_reg = type->reg_offset[cfg_type];
-
- spin_lock_irqsave(&bank->slock, flags);
-
- mask = (1 << width) - 1;
- shift = pin_offset * width;
- data = readl(reg_base + cfg_reg);
-
- if (set) {
- cfg_value = PINCFG_UNPACK_VALUE(*config);
- data &= ~(mask << shift);
- data |= (cfg_value << shift);
- writel(data, reg_base + cfg_reg);
- } else {
- data >>= shift;
- data &= mask;
- *config = PINCFG_PACK(cfg_type, data);
- }
-
- spin_unlock_irqrestore(&bank->slock, flags);
-
- return 0;
-}
-
-/* set the pin config settings for a specified pin */
-static int samsung_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *configs, unsigned num_configs)
-{
- int i, ret;
-
- for (i = 0; i < num_configs; i++) {
- ret = samsung_pinconf_rw(pctldev, pin, &configs[i], true);
- if (ret < 0)
- return ret;
- } /* for each config */
-
- return 0;
-}
-
-/* get the pin config settings for a specified pin */
-static int samsung_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *config)
-{
- return samsung_pinconf_rw(pctldev, pin, config, false);
-}
-
-/* set the pin config settings for a specified pin group */
-static int samsung_pinconf_group_set(struct pinctrl_dev *pctldev,
- unsigned group, unsigned long *configs,
- unsigned num_configs)
-{
- struct samsung_pinctrl_drv_data *drvdata;
- const unsigned int *pins;
- unsigned int cnt;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- pins = drvdata->pin_groups[group].pins;
-
- for (cnt = 0; cnt < drvdata->pin_groups[group].num_pins; cnt++)
- samsung_pinconf_set(pctldev, pins[cnt], configs, num_configs);
-
- return 0;
-}
-
-/* get the pin config settings for a specified pin group */
-static int samsung_pinconf_group_get(struct pinctrl_dev *pctldev,
- unsigned int group, unsigned long *config)
-{
- struct samsung_pinctrl_drv_data *drvdata;
- const unsigned int *pins;
-
- drvdata = pinctrl_dev_get_drvdata(pctldev);
- pins = drvdata->pin_groups[group].pins;
- samsung_pinconf_get(pctldev, pins[0], config);
- return 0;
-}
-
-/* list of pinconfig callbacks for pinconfig vertical in the pinctrl code */
-static const struct pinconf_ops samsung_pinconf_ops = {
- .pin_config_get = samsung_pinconf_get,
- .pin_config_set = samsung_pinconf_set,
- .pin_config_group_get = samsung_pinconf_group_get,
- .pin_config_group_set = samsung_pinconf_group_set,
-};
-
-/* gpiolib gpio_set callback function */
-static void samsung_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
-{
- struct samsung_pin_bank *bank = gc_to_pin_bank(gc);
- struct samsung_pin_bank_type *type = bank->type;
- unsigned long flags;
- void __iomem *reg;
- u32 data;
-
- reg = bank->drvdata->virt_base + bank->pctl_offset;
-
- spin_lock_irqsave(&bank->slock, flags);
-
- data = readl(reg + type->reg_offset[PINCFG_TYPE_DAT]);
- data &= ~(1 << offset);
- if (value)
- data |= 1 << offset;
- writel(data, reg + type->reg_offset[PINCFG_TYPE_DAT]);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-}
-
-/* gpiolib gpio_get callback function */
-static int samsung_gpio_get(struct gpio_chip *gc, unsigned offset)
-{
- void __iomem *reg;
- u32 data;
- struct samsung_pin_bank *bank = gc_to_pin_bank(gc);
- struct samsung_pin_bank_type *type = bank->type;
-
- reg = bank->drvdata->virt_base + bank->pctl_offset;
-
- data = readl(reg + type->reg_offset[PINCFG_TYPE_DAT]);
- data >>= offset;
- data &= 1;
- return data;
-}
-
-/*
- * The calls to gpio_direction_output() and gpio_direction_input()
- * leads to this function call.
- */
-static int samsung_gpio_set_direction(struct gpio_chip *gc,
- unsigned offset, bool input)
-{
- struct samsung_pin_bank_type *type;
- struct samsung_pin_bank *bank;
- struct samsung_pinctrl_drv_data *drvdata;
- void __iomem *reg;
- u32 data, mask, shift;
- unsigned long flags;
-
- bank = gc_to_pin_bank(gc);
- type = bank->type;
- drvdata = bank->drvdata;
-
- reg = drvdata->virt_base + bank->pctl_offset +
- type->reg_offset[PINCFG_TYPE_FUNC];
-
- mask = (1 << type->fld_width[PINCFG_TYPE_FUNC]) - 1;
- shift = offset * type->fld_width[PINCFG_TYPE_FUNC];
- if (shift >= 32) {
- /* Some banks have two config registers */
- shift -= 32;
- reg += 4;
- }
-
- spin_lock_irqsave(&bank->slock, flags);
-
- data = readl(reg);
- data &= ~(mask << shift);
- if (!input)
- data |= FUNC_OUTPUT << shift;
- writel(data, reg);
-
- spin_unlock_irqrestore(&bank->slock, flags);
-
- return 0;
-}
-
-/* gpiolib gpio_direction_input callback function. */
-static int samsung_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
-{
- return samsung_gpio_set_direction(gc, offset, true);
-}
-
-/* gpiolib gpio_direction_output callback function. */
-static int samsung_gpio_direction_output(struct gpio_chip *gc, unsigned offset,
- int value)
-{
- samsung_gpio_set(gc, offset, value);
- return samsung_gpio_set_direction(gc, offset, false);
-}
-
-/*
- * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
- * and a virtual IRQ, if not already present.
- */
-static int samsung_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
-{
- struct samsung_pin_bank *bank = gc_to_pin_bank(gc);
- unsigned int virq;
-
- if (!bank->irq_domain)
- return -ENXIO;
-
- virq = irq_create_mapping(bank->irq_domain, offset);
-
- return (virq) ? : -ENXIO;
-}
-
-static struct samsung_pin_group *samsung_pinctrl_create_groups(
- struct device *dev,
- struct samsung_pinctrl_drv_data *drvdata,
- unsigned int *cnt)
-{
- struct pinctrl_desc *ctrldesc = &drvdata->pctl;
- struct samsung_pin_group *groups, *grp;
- const struct pinctrl_pin_desc *pdesc;
- int i;
-
- groups = devm_kzalloc(dev, ctrldesc->npins * sizeof(*groups),
- GFP_KERNEL);
- if (!groups)
- return ERR_PTR(-EINVAL);
- grp = groups;
-
- pdesc = ctrldesc->pins;
- for (i = 0; i < ctrldesc->npins; ++i, ++pdesc, ++grp) {
- grp->name = pdesc->name;
- grp->pins = &pdesc->number;
- grp->num_pins = 1;
- }
-
- *cnt = ctrldesc->npins;
- return groups;
-}
-
-static int samsung_pinctrl_create_function(struct device *dev,
- struct samsung_pinctrl_drv_data *drvdata,
- struct device_node *func_np,
- struct samsung_pmx_func *func)
-{
- int npins;
- int ret;
- int i;
-
- if (of_property_read_u32(func_np, "samsung,pin-function", &func->val))
- return 0;
-
- npins = of_property_count_strings(func_np, "samsung,pins");
- if (npins < 1) {
- dev_err(dev, "invalid pin list in %s node", func_np->name);
- return -EINVAL;
- }
-
- func->name = func_np->full_name;
-
- func->groups = devm_kzalloc(dev, npins * sizeof(char *), GFP_KERNEL);
- if (!func->groups)
- return -ENOMEM;
-
- for (i = 0; i < npins; ++i) {
- const char *gname;
-
- ret = of_property_read_string_index(func_np, "samsung,pins",
- i, &gname);
- if (ret) {
- dev_err(dev,
- "failed to read pin name %d from %s node\n",
- i, func_np->name);
- return ret;
- }
-
- func->groups[i] = gname;
- }
-
- func->num_groups = npins;
- return 1;
-}
-
-static struct samsung_pmx_func *samsung_pinctrl_create_functions(
- struct device *dev,
- struct samsung_pinctrl_drv_data *drvdata,
- unsigned int *cnt)
-{
- struct samsung_pmx_func *functions, *func;
- struct device_node *dev_np = dev->of_node;
- struct device_node *cfg_np;
- unsigned int func_cnt = 0;
- int ret;
-
- /*
- * Iterate over all the child nodes of the pin controller node
- * and create pin groups and pin function lists.
- */
- for_each_child_of_node(dev_np, cfg_np) {
- struct device_node *func_np;
-
- if (!of_get_child_count(cfg_np)) {
- if (!of_find_property(cfg_np,
- "samsung,pin-function", NULL))
- continue;
- ++func_cnt;
- continue;
- }
-
- for_each_child_of_node(cfg_np, func_np) {
- if (!of_find_property(func_np,
- "samsung,pin-function", NULL))
- continue;
- ++func_cnt;
- }
- }
-
- functions = devm_kzalloc(dev, func_cnt * sizeof(*functions),
- GFP_KERNEL);
- if (!functions) {
- dev_err(dev, "failed to allocate memory for function list\n");
- return ERR_PTR(-EINVAL);
- }
- func = functions;
-
- /*
- * Iterate over all the child nodes of the pin controller node
- * and create pin groups and pin function lists.
- */
- func_cnt = 0;
- for_each_child_of_node(dev_np, cfg_np) {
- struct device_node *func_np;
-
- if (!of_get_child_count(cfg_np)) {
- ret = samsung_pinctrl_create_function(dev, drvdata,
- cfg_np, func);
- if (ret < 0)
- return ERR_PTR(ret);
- if (ret > 0) {
- ++func;
- ++func_cnt;
- }
- continue;
- }
-
- for_each_child_of_node(cfg_np, func_np) {
- ret = samsung_pinctrl_create_function(dev, drvdata,
- func_np, func);
- if (ret < 0)
- return ERR_PTR(ret);
- if (ret > 0) {
- ++func;
- ++func_cnt;
- }
- }
- }
-
- *cnt = func_cnt;
- return functions;
-}
-
-/*
- * Parse the information about all the available pin groups and pin functions
- * from device node of the pin-controller. A pin group is formed with all
- * the pins listed in the "samsung,pins" property.
- */
-
-static int samsung_pinctrl_parse_dt(struct platform_device *pdev,
- struct samsung_pinctrl_drv_data *drvdata)
-{
- struct device *dev = &pdev->dev;
- struct samsung_pin_group *groups;
- struct samsung_pmx_func *functions;
- unsigned int grp_cnt = 0, func_cnt = 0;
-
- groups = samsung_pinctrl_create_groups(dev, drvdata, &grp_cnt);
- if (IS_ERR(groups)) {
- dev_err(dev, "failed to parse pin groups\n");
- return PTR_ERR(groups);
- }
-
- functions = samsung_pinctrl_create_functions(dev, drvdata, &func_cnt);
- if (IS_ERR(functions)) {
- dev_err(dev, "failed to parse pin functions\n");
- return PTR_ERR(groups);
- }
-
- drvdata->pin_groups = groups;
- drvdata->nr_groups = grp_cnt;
- drvdata->pmx_functions = functions;
- drvdata->nr_functions = func_cnt;
-
- return 0;
-}
-
-/* register the pinctrl interface with the pinctrl subsystem */
-static int samsung_pinctrl_register(struct platform_device *pdev,
- struct samsung_pinctrl_drv_data *drvdata)
-{
- struct pinctrl_desc *ctrldesc = &drvdata->pctl;
- struct pinctrl_pin_desc *pindesc, *pdesc;
- struct samsung_pin_bank *pin_bank;
- char *pin_names;
- int pin, bank, ret;
-
- ctrldesc->name = "samsung-pinctrl";
- ctrldesc->owner = THIS_MODULE;
- ctrldesc->pctlops = &samsung_pctrl_ops;
- ctrldesc->pmxops = &samsung_pinmux_ops;
- ctrldesc->confops = &samsung_pinconf_ops;
-
- pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
- drvdata->ctrl->nr_pins, GFP_KERNEL);
- if (!pindesc) {
- dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
- return -ENOMEM;
- }
- ctrldesc->pins = pindesc;
- ctrldesc->npins = drvdata->ctrl->nr_pins;
-
- /* dynamically populate the pin number and pin name for pindesc */
- for (pin = 0, pdesc = pindesc; pin < ctrldesc->npins; pin++, pdesc++)
- pdesc->number = pin + drvdata->ctrl->base;
-
- /*
- * allocate space for storing the dynamically generated names for all
- * the pins which belong to this pin-controller.
- */
- pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH *
- drvdata->ctrl->nr_pins, GFP_KERNEL);
- if (!pin_names) {
- dev_err(&pdev->dev, "mem alloc for pin names failed\n");
- return -ENOMEM;
- }
-
- /* for each pin, the name of the pin is pin-bank name + pin number */
- for (bank = 0; bank < drvdata->ctrl->nr_banks; bank++) {
- pin_bank = &drvdata->ctrl->pin_banks[bank];
- for (pin = 0; pin < pin_bank->nr_pins; pin++) {
- sprintf(pin_names, "%s-%d", pin_bank->name, pin);
- pdesc = pindesc + pin_bank->pin_base + pin;
- pdesc->name = pin_names;
- pin_names += PIN_NAME_LENGTH;
- }
- }
-
- ret = samsung_pinctrl_parse_dt(pdev, drvdata);
- if (ret)
- return ret;
-
- drvdata->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, drvdata);
- if (!drvdata->pctl_dev) {
- dev_err(&pdev->dev, "could not register pinctrl driver\n");
- return -EINVAL;
- }
-
- for (bank = 0; bank < drvdata->ctrl->nr_banks; ++bank) {
- pin_bank = &drvdata->ctrl->pin_banks[bank];
- pin_bank->grange.name = pin_bank->name;
- pin_bank->grange.id = bank;
- pin_bank->grange.pin_base = drvdata->ctrl->base
- + pin_bank->pin_base;
- pin_bank->grange.base = pin_bank->gpio_chip.base;
- pin_bank->grange.npins = pin_bank->gpio_chip.ngpio;
- pin_bank->grange.gc = &pin_bank->gpio_chip;
- pinctrl_add_gpio_range(drvdata->pctl_dev, &pin_bank->grange);
- }
-
- return 0;
-}
-
-static int samsung_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
- return pinctrl_request_gpio(chip->base + offset);
-}
-
-static void samsung_gpio_free(struct gpio_chip *chip, unsigned offset)
-{
- pinctrl_free_gpio(chip->base + offset);
-}
-
-static const struct gpio_chip samsung_gpiolib_chip = {
- .request = samsung_gpio_request,
- .free = samsung_gpio_free,
- .set = samsung_gpio_set,
- .get = samsung_gpio_get,
- .direction_input = samsung_gpio_direction_input,
- .direction_output = samsung_gpio_direction_output,
- .to_irq = samsung_gpio_to_irq,
- .owner = THIS_MODULE,
-};
-
-/* register the gpiolib interface with the gpiolib subsystem */
-static int samsung_gpiolib_register(struct platform_device *pdev,
- struct samsung_pinctrl_drv_data *drvdata)
-{
- struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
- struct samsung_pin_bank *bank = ctrl->pin_banks;
- struct gpio_chip *gc;
- int ret;
- int i;
-
- for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
- bank->gpio_chip = samsung_gpiolib_chip;
-
- gc = &bank->gpio_chip;
- gc->base = ctrl->base + bank->pin_base;
- gc->ngpio = bank->nr_pins;
- gc->dev = &pdev->dev;
- gc->of_node = bank->of_node;
- gc->label = bank->name;
-
- ret = gpiochip_add(gc);
- if (ret) {
- dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
- gc->label, ret);
- goto fail;
- }
- }
-
- return 0;
-
-fail:
- for (--i, --bank; i >= 0; --i, --bank)
- if (gpiochip_remove(&bank->gpio_chip))
- dev_err(&pdev->dev, "gpio chip %s remove failed\n",
- bank->gpio_chip.label);
- return ret;
-}
-
-/* unregister the gpiolib interface with the gpiolib subsystem */
-static int samsung_gpiolib_unregister(struct platform_device *pdev,
- struct samsung_pinctrl_drv_data *drvdata)
-{
- struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
- struct samsung_pin_bank *bank = ctrl->pin_banks;
- int ret = 0;
- int i;
-
- for (i = 0; !ret && i < ctrl->nr_banks; ++i, ++bank)
- ret = gpiochip_remove(&bank->gpio_chip);
-
- if (ret)
- dev_err(&pdev->dev, "gpio chip remove failed\n");
-
- return ret;
-}
-
-static const struct of_device_id samsung_pinctrl_dt_match[];
-
-/* retrieve the soc specific data */
-static struct samsung_pin_ctrl *samsung_pinctrl_get_soc_data(
- struct samsung_pinctrl_drv_data *d,
- struct platform_device *pdev)
-{
- int id;
- const struct of_device_id *match;
- struct device_node *node = pdev->dev.of_node;
- struct device_node *np;
- struct samsung_pin_ctrl *ctrl;
- struct samsung_pin_bank *bank;
- int i;
-
- id = of_alias_get_id(node, "pinctrl");
- if (id < 0) {
- dev_err(&pdev->dev, "failed to get alias id\n");
- return NULL;
- }
- match = of_match_node(samsung_pinctrl_dt_match, node);
- ctrl = (struct samsung_pin_ctrl *)match->data + id;
-
- bank = ctrl->pin_banks;
- for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
- spin_lock_init(&bank->slock);
- bank->drvdata = d;
- bank->pin_base = ctrl->nr_pins;
- ctrl->nr_pins += bank->nr_pins;
- }
-
- for_each_child_of_node(node, np) {
- if (!of_find_property(np, "gpio-controller", NULL))
- continue;
- bank = ctrl->pin_banks;
- for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
- if (!strcmp(bank->name, np->name)) {
- bank->of_node = np;
- break;
- }
- }
- }
-
- ctrl->base = pin_base;
- pin_base += ctrl->nr_pins;
-
- return ctrl;
-}
-
-static int samsung_pinctrl_probe(struct platform_device *pdev)
-{
- struct samsung_pinctrl_drv_data *drvdata;
- struct device *dev = &pdev->dev;
- struct samsung_pin_ctrl *ctrl;
- struct resource *res;
- int ret;
-
- if (!dev->of_node) {
- dev_err(dev, "device tree node not found\n");
- return -ENODEV;
- }
-
- drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
- if (!drvdata) {
- dev_err(dev, "failed to allocate memory for driver's "
- "private data\n");
- return -ENOMEM;
- }
-
- ctrl = samsung_pinctrl_get_soc_data(drvdata, pdev);
- if (!ctrl) {
- dev_err(&pdev->dev, "driver data not available\n");
- return -EINVAL;
- }
- drvdata->ctrl = ctrl;
- drvdata->dev = dev;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- drvdata->virt_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(drvdata->virt_base))
- return PTR_ERR(drvdata->virt_base);
-
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (res)
- drvdata->irq = res->start;
-
- ret = samsung_gpiolib_register(pdev, drvdata);
- if (ret)
- return ret;
-
- ret = samsung_pinctrl_register(pdev, drvdata);
- if (ret) {
- samsung_gpiolib_unregister(pdev, drvdata);
- return ret;
- }
-
- if (ctrl->eint_gpio_init)
- ctrl->eint_gpio_init(drvdata);
- if (ctrl->eint_wkup_init)
- ctrl->eint_wkup_init(drvdata);
-
- platform_set_drvdata(pdev, drvdata);
-
- /* Add to the global list */
- list_add_tail(&drvdata->node, &drvdata_list);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-
-/**
- * samsung_pinctrl_suspend_dev - save pinctrl state for suspend for a device
- *
- * Save data for all banks handled by this device.
- */
-static void samsung_pinctrl_suspend_dev(
- struct samsung_pinctrl_drv_data *drvdata)
-{
- struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
- void __iomem *virt_base = drvdata->virt_base;
- int i;
-
- for (i = 0; i < ctrl->nr_banks; i++) {
- struct samsung_pin_bank *bank = &ctrl->pin_banks[i];
- void __iomem *reg = virt_base + bank->pctl_offset;
-
- u8 *offs = bank->type->reg_offset;
- u8 *widths = bank->type->fld_width;
- enum pincfg_type type;
-
- /* Registers without a powerdown config aren't lost */
- if (!widths[PINCFG_TYPE_CON_PDN])
- continue;
-
- for (type = 0; type < PINCFG_TYPE_NUM; type++)
- if (widths[type])
- bank->pm_save[type] = readl(reg + offs[type]);
-
- if (widths[PINCFG_TYPE_FUNC] * bank->nr_pins > 32) {
- /* Some banks have two config registers */
- bank->pm_save[PINCFG_TYPE_NUM] =
- readl(reg + offs[PINCFG_TYPE_FUNC] + 4);
- pr_debug("Save %s @ %p (con %#010x %08x)\n",
- bank->name, reg,
- bank->pm_save[PINCFG_TYPE_FUNC],
- bank->pm_save[PINCFG_TYPE_NUM]);
- } else {
- pr_debug("Save %s @ %p (con %#010x)\n", bank->name,
- reg, bank->pm_save[PINCFG_TYPE_FUNC]);
- }
- }
-
- if (ctrl->suspend)
- ctrl->suspend(drvdata);
-}
-
-/**
- * samsung_pinctrl_resume_dev - restore pinctrl state from suspend for a device
- *
- * Restore one of the banks that was saved during suspend.
- *
- * We don't bother doing anything complicated to avoid glitching lines since
- * we're called before pad retention is turned off.
- */
-static void samsung_pinctrl_resume_dev(struct samsung_pinctrl_drv_data *drvdata)
-{
- struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
- void __iomem *virt_base = drvdata->virt_base;
- int i;
-
- if (ctrl->resume)
- ctrl->resume(drvdata);
-
- for (i = 0; i < ctrl->nr_banks; i++) {
- struct samsung_pin_bank *bank = &ctrl->pin_banks[i];
- void __iomem *reg = virt_base + bank->pctl_offset;
-
- u8 *offs = bank->type->reg_offset;
- u8 *widths = bank->type->fld_width;
- enum pincfg_type type;
-
- /* Registers without a powerdown config aren't lost */
- if (!widths[PINCFG_TYPE_CON_PDN])
- continue;
-
- if (widths[PINCFG_TYPE_FUNC] * bank->nr_pins > 32) {
- /* Some banks have two config registers */
- pr_debug("%s @ %p (con %#010x %08x => %#010x %08x)\n",
- bank->name, reg,
- readl(reg + offs[PINCFG_TYPE_FUNC]),
- readl(reg + offs[PINCFG_TYPE_FUNC] + 4),
- bank->pm_save[PINCFG_TYPE_FUNC],
- bank->pm_save[PINCFG_TYPE_NUM]);
- writel(bank->pm_save[PINCFG_TYPE_NUM],
- reg + offs[PINCFG_TYPE_FUNC] + 4);
- } else {
- pr_debug("%s @ %p (con %#010x => %#010x)\n", bank->name,
- reg, readl(reg + offs[PINCFG_TYPE_FUNC]),
- bank->pm_save[PINCFG_TYPE_FUNC]);
- }
- for (type = 0; type < PINCFG_TYPE_NUM; type++)
- if (widths[type])
- writel(bank->pm_save[type], reg + offs[type]);
- }
-}
-
-/**
- * samsung_pinctrl_suspend - save pinctrl state for suspend
- *
- * Save data for all banks across all devices.
- */
-static int samsung_pinctrl_suspend(void)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- list_for_each_entry(drvdata, &drvdata_list, node) {
- samsung_pinctrl_suspend_dev(drvdata);
- }
-
- return 0;
-}
-
-/**
- * samsung_pinctrl_resume - restore pinctrl state for suspend
- *
- * Restore data for all banks across all devices.
- */
-static void samsung_pinctrl_resume(void)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- list_for_each_entry_reverse(drvdata, &drvdata_list, node) {
- samsung_pinctrl_resume_dev(drvdata);
- }
-}
-
-#else
-#define samsung_pinctrl_suspend NULL
-#define samsung_pinctrl_resume NULL
-#endif
-
-static struct syscore_ops samsung_pinctrl_syscore_ops = {
- .suspend = samsung_pinctrl_suspend,
- .resume = samsung_pinctrl_resume,
-};
-
-static const struct of_device_id samsung_pinctrl_dt_match[] = {
-#ifdef CONFIG_PINCTRL_EXYNOS
- { .compatible = "samsung,exynos3250-pinctrl",
- .data = (void *)exynos3250_pin_ctrl },
- { .compatible = "samsung,exynos4210-pinctrl",
- .data = (void *)exynos4210_pin_ctrl },
- { .compatible = "samsung,exynos4x12-pinctrl",
- .data = (void *)exynos4x12_pin_ctrl },
- { .compatible = "samsung,exynos5250-pinctrl",
- .data = (void *)exynos5250_pin_ctrl },
- { .compatible = "samsung,exynos5260-pinctrl",
- .data = (void *)exynos5260_pin_ctrl },
- { .compatible = "samsung,exynos5420-pinctrl",
- .data = (void *)exynos5420_pin_ctrl },
- { .compatible = "samsung,s5pv210-pinctrl",
- .data = (void *)s5pv210_pin_ctrl },
-#endif
-#ifdef CONFIG_PINCTRL_S3C64XX
- { .compatible = "samsung,s3c64xx-pinctrl",
- .data = s3c64xx_pin_ctrl },
-#endif
-#ifdef CONFIG_PINCTRL_S3C24XX
- { .compatible = "samsung,s3c2412-pinctrl",
- .data = s3c2412_pin_ctrl },
- { .compatible = "samsung,s3c2416-pinctrl",
- .data = s3c2416_pin_ctrl },
- { .compatible = "samsung,s3c2440-pinctrl",
- .data = s3c2440_pin_ctrl },
- { .compatible = "samsung,s3c2450-pinctrl",
- .data = s3c2450_pin_ctrl },
-#endif
- {},
-};
-MODULE_DEVICE_TABLE(of, samsung_pinctrl_dt_match);
-
-static struct platform_driver samsung_pinctrl_driver = {
- .probe = samsung_pinctrl_probe,
- .driver = {
- .name = "samsung-pinctrl",
- .owner = THIS_MODULE,
- .of_match_table = samsung_pinctrl_dt_match,
- },
-};
-
-static int __init samsung_pinctrl_drv_register(void)
-{
- /*
- * Register syscore ops for save/restore of registers across suspend.
- * It's important to ensure that this driver is running at an earlier
- * initcall level than any arch-specific init calls that install syscore
- * ops that turn off pad retention (like exynos_pm_resume).
- */
- register_syscore_ops(&samsung_pinctrl_syscore_ops);
-
- return platform_driver_register(&samsung_pinctrl_driver);
-}
-postcore_initcall(samsung_pinctrl_drv_register);
-
-static void __exit samsung_pinctrl_drv_unregister(void)
-{
- platform_driver_unregister(&samsung_pinctrl_driver);
-}
-module_exit(samsung_pinctrl_drv_unregister);
-
-MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
-MODULE_DESCRIPTION("Samsung pinctrl driver");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's SoC's.
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- * Copyright (c) 2012 Linaro Ltd
- * http://www.linaro.org
- *
- * Author: Thomas Abraham <thomas.ab@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef __PINCTRL_SAMSUNG_H
-#define __PINCTRL_SAMSUNG_H
-
-#include <linux/pinctrl/pinctrl.h>
-#include <linux/pinctrl/pinmux.h>
-#include <linux/pinctrl/pinconf.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/pinctrl/machine.h>
-
-#include <linux/gpio.h>
-
-/* pinmux function number for pin as gpio output line */
-#define FUNC_OUTPUT 0x1
-
-/**
- * enum pincfg_type - possible pin configuration types supported.
- * @PINCFG_TYPE_FUNC: Function configuration.
- * @PINCFG_TYPE_DAT: Pin value configuration.
- * @PINCFG_TYPE_PUD: Pull up/down configuration.
- * @PINCFG_TYPE_DRV: Drive strength configuration.
- * @PINCFG_TYPE_CON_PDN: Pin function in power down mode.
- * @PINCFG_TYPE_PUD_PDN: Pull up/down configuration in power down mode.
- */
-enum pincfg_type {
- PINCFG_TYPE_FUNC,
- PINCFG_TYPE_DAT,
- PINCFG_TYPE_PUD,
- PINCFG_TYPE_DRV,
- PINCFG_TYPE_CON_PDN,
- PINCFG_TYPE_PUD_PDN,
-
- PINCFG_TYPE_NUM
-};
-
-/*
- * pin configuration (pull up/down and drive strength) type and its value are
- * packed together into a 16-bits. The upper 8-bits represent the configuration
- * type and the lower 8-bits hold the value of the configuration type.
- */
-#define PINCFG_TYPE_MASK 0xFF
-#define PINCFG_VALUE_SHIFT 8
-#define PINCFG_VALUE_MASK (0xFF << PINCFG_VALUE_SHIFT)
-#define PINCFG_PACK(type, value) (((value) << PINCFG_VALUE_SHIFT) | type)
-#define PINCFG_UNPACK_TYPE(cfg) ((cfg) & PINCFG_TYPE_MASK)
-#define PINCFG_UNPACK_VALUE(cfg) (((cfg) & PINCFG_VALUE_MASK) >> \
- PINCFG_VALUE_SHIFT)
-/**
- * enum eint_type - possible external interrupt types.
- * @EINT_TYPE_NONE: bank does not support external interrupts
- * @EINT_TYPE_GPIO: bank supportes external gpio interrupts
- * @EINT_TYPE_WKUP: bank supportes external wakeup interrupts
- * @EINT_TYPE_WKUP_MUX: bank supports multiplexed external wakeup interrupts
- *
- * Samsung GPIO controller groups all the available pins into banks. The pins
- * in a pin bank can support external gpio interrupts or external wakeup
- * interrupts or no interrupts at all. From a software perspective, the only
- * difference between external gpio and external wakeup interrupts is that
- * the wakeup interrupts can additionally wakeup the system if it is in
- * suspended state.
- */
-enum eint_type {
- EINT_TYPE_NONE,
- EINT_TYPE_GPIO,
- EINT_TYPE_WKUP,
- EINT_TYPE_WKUP_MUX,
-};
-
-/* maximum length of a pin in pin descriptor (example: "gpa0-0") */
-#define PIN_NAME_LENGTH 10
-
-#define PIN_GROUP(n, p, f) \
- { \
- .name = n, \
- .pins = p, \
- .num_pins = ARRAY_SIZE(p), \
- .func = f \
- }
-
-#define PMX_FUNC(n, g) \
- { \
- .name = n, \
- .groups = g, \
- .num_groups = ARRAY_SIZE(g), \
- }
-
-struct samsung_pinctrl_drv_data;
-
-/**
- * struct samsung_pin_bank_type: pin bank type description
- * @fld_width: widths of configuration bitfields (0 if unavailable)
- * @reg_offset: offsets of configuration registers (don't care of width is 0)
- */
-struct samsung_pin_bank_type {
- u8 fld_width[PINCFG_TYPE_NUM];
- u8 reg_offset[PINCFG_TYPE_NUM];
-};
-
-/**
- * struct samsung_pin_bank: represent a controller pin-bank.
- * @type: type of the bank (register offsets and bitfield widths)
- * @pctl_offset: starting offset of the pin-bank registers.
- * @pin_base: starting pin number of the bank.
- * @nr_pins: number of pins included in this bank.
- * @eint_func: function to set in CON register to configure pin as EINT.
- * @eint_type: type of the external interrupt supported by the bank.
- * @eint_mask: bit mask of pins which support EINT function.
- * @name: name to be prefixed for each pin in this pin bank.
- * @of_node: OF node of the bank.
- * @drvdata: link to controller driver data
- * @irq_domain: IRQ domain of the bank.
- * @gpio_chip: GPIO chip of the bank.
- * @grange: linux gpio pin range supported by this bank.
- * @slock: spinlock protecting bank registers
- * @pm_save: saved register values during suspend
- */
-struct samsung_pin_bank {
- struct samsung_pin_bank_type *type;
- u32 pctl_offset;
- u32 pin_base;
- u8 nr_pins;
- u8 eint_func;
- enum eint_type eint_type;
- u32 eint_mask;
- u32 eint_offset;
- char *name;
- void *soc_priv;
- struct device_node *of_node;
- struct samsung_pinctrl_drv_data *drvdata;
- struct irq_domain *irq_domain;
- struct gpio_chip gpio_chip;
- struct pinctrl_gpio_range grange;
- spinlock_t slock;
-
- u32 pm_save[PINCFG_TYPE_NUM + 1]; /* +1 to handle double CON registers*/
-};
-
-/**
- * struct samsung_pin_ctrl: represent a pin controller.
- * @pin_banks: list of pin banks included in this controller.
- * @nr_banks: number of pin banks.
- * @base: starting system wide pin number.
- * @nr_pins: number of pins supported by the controller.
- * @eint_gpio_init: platform specific callback to setup the external gpio
- * interrupts for the controller.
- * @eint_wkup_init: platform specific callback to setup the external wakeup
- * interrupts for the controller.
- * @label: for debug information.
- */
-struct samsung_pin_ctrl {
- struct samsung_pin_bank *pin_banks;
- u32 nr_banks;
-
- u32 base;
- u32 nr_pins;
-
- int (*eint_gpio_init)(struct samsung_pinctrl_drv_data *);
- int (*eint_wkup_init)(struct samsung_pinctrl_drv_data *);
- void (*suspend)(struct samsung_pinctrl_drv_data *);
- void (*resume)(struct samsung_pinctrl_drv_data *);
-
- char *label;
-};
-
-/**
- * struct samsung_pinctrl_drv_data: wrapper for holding driver data together.
- * @node: global list node
- * @virt_base: register base address of the controller.
- * @dev: device instance representing the controller.
- * @irq: interrpt number used by the controller to notify gpio interrupts.
- * @ctrl: pin controller instance managed by the driver.
- * @pctl: pin controller descriptor registered with the pinctrl subsystem.
- * @pctl_dev: cookie representing pinctrl device instance.
- * @pin_groups: list of pin groups available to the driver.
- * @nr_groups: number of such pin groups.
- * @pmx_functions: list of pin functions available to the driver.
- * @nr_function: number of such pin functions.
- */
-struct samsung_pinctrl_drv_data {
- struct list_head node;
- void __iomem *virt_base;
- struct device *dev;
- int irq;
-
- struct samsung_pin_ctrl *ctrl;
- struct pinctrl_desc pctl;
- struct pinctrl_dev *pctl_dev;
-
- const struct samsung_pin_group *pin_groups;
- unsigned int nr_groups;
- const struct samsung_pmx_func *pmx_functions;
- unsigned int nr_functions;
-};
-
-/**
- * struct samsung_pin_group: represent group of pins of a pinmux function.
- * @name: name of the pin group, used to lookup the group.
- * @pins: the pins included in this group.
- * @num_pins: number of pins included in this group.
- * @func: the function number to be programmed when selected.
- */
-struct samsung_pin_group {
- const char *name;
- const unsigned int *pins;
- u8 num_pins;
- u8 func;
-};
-
-/**
- * struct samsung_pmx_func: represent a pin function.
- * @name: name of the pin function, used to lookup the function.
- * @groups: one or more names of pin groups that provide this function.
- * @num_groups: number of groups included in @groups.
- */
-struct samsung_pmx_func {
- const char *name;
- const char **groups;
- u8 num_groups;
- u32 val;
-};
-
-/* list of all exported SoC specific data */
-extern struct samsung_pin_ctrl exynos3250_pin_ctrl[];
-extern struct samsung_pin_ctrl exynos4210_pin_ctrl[];
-extern struct samsung_pin_ctrl exynos4x12_pin_ctrl[];
-extern struct samsung_pin_ctrl exynos5250_pin_ctrl[];
-extern struct samsung_pin_ctrl exynos5260_pin_ctrl[];
-extern struct samsung_pin_ctrl exynos5420_pin_ctrl[];
-extern struct samsung_pin_ctrl s3c64xx_pin_ctrl[];
-extern struct samsung_pin_ctrl s3c2412_pin_ctrl[];
-extern struct samsung_pin_ctrl s3c2416_pin_ctrl[];
-extern struct samsung_pin_ctrl s3c2440_pin_ctrl[];
-extern struct samsung_pin_ctrl s3c2450_pin_ctrl[];
-extern struct samsung_pin_ctrl s5pv210_pin_ctrl[];
-
-#endif /* __PINCTRL_SAMSUNG_H */
--- /dev/null
+#
+# Samsung Pin control drivers
+#
+config PINCTRL_SAMSUNG
+ bool
+ select PINMUX
+ select PINCONF
+
+config PINCTRL_EXYNOS
+ bool "Pinctrl driver data for Samsung EXYNOS SoCs other than 5440"
+ depends on OF && GPIOLIB && (ARCH_EXYNOS || ARCH_S5PV210)
+ select PINCTRL_SAMSUNG
+
+config PINCTRL_EXYNOS5440
+ bool "Samsung EXYNOS5440 SoC pinctrl driver"
+ depends on SOC_EXYNOS5440
+ select PINMUX
+ select PINCONF
+
+config PINCTRL_S3C24XX
+ bool "Samsung S3C24XX SoC pinctrl driver"
+ depends on ARCH_S3C24XX
+ select PINCTRL_SAMSUNG
+
+config PINCTRL_S3C64XX
+ bool "Samsung S3C64XX SoC pinctrl driver"
+ depends on ARCH_S3C64XX
+ select PINCTRL_SAMSUNG
--- /dev/null
+# Samsung pin control drivers
+
+obj-$(CONFIG_PINCTRL_SAMSUNG) += pinctrl-samsung.o
+obj-$(CONFIG_PINCTRL_EXYNOS) += pinctrl-exynos.o
+obj-$(CONFIG_PINCTRL_EXYNOS5440) += pinctrl-exynos5440.o
+obj-$(CONFIG_PINCTRL_S3C24XX) += pinctrl-s3c24xx.o
+obj-$(CONFIG_PINCTRL_S3C64XX) += pinctrl-s3c64xx.o
--- /dev/null
+/*
+ * Exynos specific support for Samsung pinctrl/gpiolib driver with eint support.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Copyright (c) 2012 Linaro Ltd
+ * http://www.linaro.org
+ *
+ * Author: Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This file contains the Samsung Exynos specific information required by the
+ * the Samsung pinctrl/gpiolib driver. It also includes the implementation of
+ * external gpio and wakeup interrupt support.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/err.h>
+
+#include "pinctrl-samsung.h"
+#include "pinctrl-exynos.h"
+
+struct exynos_irq_chip {
+ struct irq_chip chip;
+
+ u32 eint_con;
+ u32 eint_mask;
+ u32 eint_pend;
+};
+
+static inline struct exynos_irq_chip *to_exynos_irq_chip(struct irq_chip *chip)
+{
+ return container_of(chip, struct exynos_irq_chip, chip);
+}
+
+static struct samsung_pin_bank_type bank_type_off = {
+ .fld_width = { 4, 1, 2, 2, 2, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, },
+};
+
+static struct samsung_pin_bank_type bank_type_alive = {
+ .fld_width = { 4, 1, 2, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
+};
+
+/* list of external wakeup controllers supported */
+static const struct of_device_id exynos_wkup_irq_ids[] = {
+ { .compatible = "samsung,exynos4210-wakeup-eint", },
+ { }
+};
+
+static void exynos_irq_mask(struct irq_data *irqd)
+{
+ struct irq_chip *chip = irq_data_get_irq_chip(irqd);
+ struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned long reg_mask = our_chip->eint_mask + bank->eint_offset;
+ unsigned long mask;
+ unsigned long flags;
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ mask = readl(d->virt_base + reg_mask);
+ mask |= 1 << irqd->hwirq;
+ writel(mask, d->virt_base + reg_mask);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+}
+
+static void exynos_irq_ack(struct irq_data *irqd)
+{
+ struct irq_chip *chip = irq_data_get_irq_chip(irqd);
+ struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned long reg_pend = our_chip->eint_pend + bank->eint_offset;
+
+ writel(1 << irqd->hwirq, d->virt_base + reg_pend);
+}
+
+static void exynos_irq_unmask(struct irq_data *irqd)
+{
+ struct irq_chip *chip = irq_data_get_irq_chip(irqd);
+ struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned long reg_mask = our_chip->eint_mask + bank->eint_offset;
+ unsigned long mask;
+ unsigned long flags;
+
+ /*
+ * Ack level interrupts right before unmask
+ *
+ * If we don't do this we'll get a double-interrupt. Level triggered
+ * interrupts must not fire an interrupt if the level is not
+ * _currently_ active, even if it was active while the interrupt was
+ * masked.
+ */
+ if (irqd_get_trigger_type(irqd) & IRQ_TYPE_LEVEL_MASK)
+ exynos_irq_ack(irqd);
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ mask = readl(d->virt_base + reg_mask);
+ mask &= ~(1 << irqd->hwirq);
+ writel(mask, d->virt_base + reg_mask);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+}
+
+static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type)
+{
+ struct irq_chip *chip = irq_data_get_irq_chip(irqd);
+ struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip);
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pin_bank_type *bank_type = bank->type;
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned int pin = irqd->hwirq;
+ unsigned int shift = EXYNOS_EINT_CON_LEN * pin;
+ unsigned int con, trig_type;
+ unsigned long reg_con = our_chip->eint_con + bank->eint_offset;
+ unsigned long flags;
+ unsigned int mask;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ trig_type = EXYNOS_EINT_EDGE_RISING;
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ trig_type = EXYNOS_EINT_EDGE_FALLING;
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ trig_type = EXYNOS_EINT_EDGE_BOTH;
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ trig_type = EXYNOS_EINT_LEVEL_HIGH;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ trig_type = EXYNOS_EINT_LEVEL_LOW;
+ break;
+ default:
+ pr_err("unsupported external interrupt type\n");
+ return -EINVAL;
+ }
+
+ if (type & IRQ_TYPE_EDGE_BOTH)
+ __irq_set_handler_locked(irqd->irq, handle_edge_irq);
+ else
+ __irq_set_handler_locked(irqd->irq, handle_level_irq);
+
+ con = readl(d->virt_base + reg_con);
+ con &= ~(EXYNOS_EINT_CON_MASK << shift);
+ con |= trig_type << shift;
+ writel(con, d->virt_base + reg_con);
+
+ reg_con = bank->pctl_offset + bank_type->reg_offset[PINCFG_TYPE_FUNC];
+ shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC];
+ mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ con = readl(d->virt_base + reg_con);
+ con &= ~(mask << shift);
+ con |= EXYNOS_EINT_FUNC << shift;
+ writel(con, d->virt_base + reg_con);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+
+ return 0;
+}
+
+/*
+ * irq_chip for gpio interrupts.
+ */
+static struct exynos_irq_chip exynos_gpio_irq_chip = {
+ .chip = {
+ .name = "exynos_gpio_irq_chip",
+ .irq_unmask = exynos_irq_unmask,
+ .irq_mask = exynos_irq_mask,
+ .irq_ack = exynos_irq_ack,
+ .irq_set_type = exynos_irq_set_type,
+ },
+ .eint_con = EXYNOS_GPIO_ECON_OFFSET,
+ .eint_mask = EXYNOS_GPIO_EMASK_OFFSET,
+ .eint_pend = EXYNOS_GPIO_EPEND_OFFSET,
+};
+
+static int exynos_gpio_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct samsung_pin_bank *b = h->host_data;
+
+ irq_set_chip_data(virq, b);
+ irq_set_chip_and_handler(virq, &exynos_gpio_irq_chip.chip,
+ handle_level_irq);
+ set_irq_flags(virq, IRQF_VALID);
+ return 0;
+}
+
+/*
+ * irq domain callbacks for external gpio interrupt controller.
+ */
+static const struct irq_domain_ops exynos_gpio_irqd_ops = {
+ .map = exynos_gpio_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static irqreturn_t exynos_eint_gpio_irq(int irq, void *data)
+{
+ struct samsung_pinctrl_drv_data *d = data;
+ struct samsung_pin_ctrl *ctrl = d->ctrl;
+ struct samsung_pin_bank *bank = ctrl->pin_banks;
+ unsigned int svc, group, pin, virq;
+
+ svc = readl(d->virt_base + EXYNOS_SVC_OFFSET);
+ group = EXYNOS_SVC_GROUP(svc);
+ pin = svc & EXYNOS_SVC_NUM_MASK;
+
+ if (!group)
+ return IRQ_HANDLED;
+ bank += (group - 1);
+
+ virq = irq_linear_revmap(bank->irq_domain, pin);
+ if (!virq)
+ return IRQ_NONE;
+ generic_handle_irq(virq);
+ return IRQ_HANDLED;
+}
+
+struct exynos_eint_gpio_save {
+ u32 eint_con;
+ u32 eint_fltcon0;
+ u32 eint_fltcon1;
+};
+
+/*
+ * exynos_eint_gpio_init() - setup handling of external gpio interrupts.
+ * @d: driver data of samsung pinctrl driver.
+ */
+static int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
+{
+ struct samsung_pin_bank *bank;
+ struct device *dev = d->dev;
+ int ret;
+ int i;
+
+ if (!d->irq) {
+ dev_err(dev, "irq number not available\n");
+ return -EINVAL;
+ }
+
+ ret = devm_request_irq(dev, d->irq, exynos_eint_gpio_irq,
+ 0, dev_name(dev), d);
+ if (ret) {
+ dev_err(dev, "irq request failed\n");
+ return -ENXIO;
+ }
+
+ bank = d->ctrl->pin_banks;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ if (bank->eint_type != EINT_TYPE_GPIO)
+ continue;
+ bank->irq_domain = irq_domain_add_linear(bank->of_node,
+ bank->nr_pins, &exynos_gpio_irqd_ops, bank);
+ if (!bank->irq_domain) {
+ dev_err(dev, "gpio irq domain add failed\n");
+ ret = -ENXIO;
+ goto err_domains;
+ }
+
+ bank->soc_priv = devm_kzalloc(d->dev,
+ sizeof(struct exynos_eint_gpio_save), GFP_KERNEL);
+ if (!bank->soc_priv) {
+ irq_domain_remove(bank->irq_domain);
+ ret = -ENOMEM;
+ goto err_domains;
+ }
+ }
+
+ return 0;
+
+err_domains:
+ for (--i, --bank; i >= 0; --i, --bank) {
+ if (bank->eint_type != EINT_TYPE_GPIO)
+ continue;
+ irq_domain_remove(bank->irq_domain);
+ }
+
+ return ret;
+}
+
+static u32 exynos_eint_wake_mask = 0xffffffff;
+
+u32 exynos_get_eint_wake_mask(void)
+{
+ return exynos_eint_wake_mask;
+}
+
+static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ unsigned long bit = 1UL << (2 * bank->eint_offset + irqd->hwirq);
+
+ pr_info("wake %s for irq %d\n", on ? "enabled" : "disabled", irqd->irq);
+
+ if (!on)
+ exynos_eint_wake_mask |= bit;
+ else
+ exynos_eint_wake_mask &= ~bit;
+
+ return 0;
+}
+
+/*
+ * irq_chip for wakeup interrupts
+ */
+static struct exynos_irq_chip exynos_wkup_irq_chip = {
+ .chip = {
+ .name = "exynos_wkup_irq_chip",
+ .irq_unmask = exynos_irq_unmask,
+ .irq_mask = exynos_irq_mask,
+ .irq_ack = exynos_irq_ack,
+ .irq_set_type = exynos_irq_set_type,
+ .irq_set_wake = exynos_wkup_irq_set_wake,
+ },
+ .eint_con = EXYNOS_WKUP_ECON_OFFSET,
+ .eint_mask = EXYNOS_WKUP_EMASK_OFFSET,
+ .eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
+};
+
+/* interrupt handler for wakeup interrupts 0..15 */
+static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
+{
+ struct exynos_weint_data *eintd = irq_get_handler_data(irq);
+ struct samsung_pin_bank *bank = eintd->bank;
+ struct irq_chip *chip = irq_get_chip(irq);
+ int eint_irq;
+
+ chained_irq_enter(chip, desc);
+ chip->irq_mask(&desc->irq_data);
+
+ if (chip->irq_ack)
+ chip->irq_ack(&desc->irq_data);
+
+ eint_irq = irq_linear_revmap(bank->irq_domain, eintd->irq);
+ generic_handle_irq(eint_irq);
+ chip->irq_unmask(&desc->irq_data);
+ chained_irq_exit(chip, desc);
+}
+
+static inline void exynos_irq_demux_eint(unsigned long pend,
+ struct irq_domain *domain)
+{
+ unsigned int irq;
+
+ while (pend) {
+ irq = fls(pend) - 1;
+ generic_handle_irq(irq_find_mapping(domain, irq));
+ pend &= ~(1 << irq);
+ }
+}
+
+/* interrupt handler for wakeup interrupt 16 */
+static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_get_chip(irq);
+ struct exynos_muxed_weint_data *eintd = irq_get_handler_data(irq);
+ struct samsung_pinctrl_drv_data *d = eintd->banks[0]->drvdata;
+ unsigned long pend;
+ unsigned long mask;
+ int i;
+
+ chained_irq_enter(chip, desc);
+
+ for (i = 0; i < eintd->nr_banks; ++i) {
+ struct samsung_pin_bank *b = eintd->banks[i];
+ pend = readl(d->virt_base + EXYNOS_WKUP_EPEND_OFFSET
+ + b->eint_offset);
+ mask = readl(d->virt_base + EXYNOS_WKUP_EMASK_OFFSET
+ + b->eint_offset);
+ exynos_irq_demux_eint(pend & ~mask, b->irq_domain);
+ }
+
+ chained_irq_exit(chip, desc);
+}
+
+static int exynos_wkup_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ irq_set_chip_and_handler(virq, &exynos_wkup_irq_chip.chip,
+ handle_level_irq);
+ irq_set_chip_data(virq, h->host_data);
+ set_irq_flags(virq, IRQF_VALID);
+ return 0;
+}
+
+/*
+ * irq domain callbacks for external wakeup interrupt controller.
+ */
+static const struct irq_domain_ops exynos_wkup_irqd_ops = {
+ .map = exynos_wkup_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+/*
+ * exynos_eint_wkup_init() - setup handling of external wakeup interrupts.
+ * @d: driver data of samsung pinctrl driver.
+ */
+static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
+{
+ struct device *dev = d->dev;
+ struct device_node *wkup_np = NULL;
+ struct device_node *np;
+ struct samsung_pin_bank *bank;
+ struct exynos_weint_data *weint_data;
+ struct exynos_muxed_weint_data *muxed_data;
+ unsigned int muxed_banks = 0;
+ unsigned int i;
+ int idx, irq;
+
+ for_each_child_of_node(dev->of_node, np) {
+ if (of_match_node(exynos_wkup_irq_ids, np)) {
+ wkup_np = np;
+ break;
+ }
+ }
+ if (!wkup_np)
+ return -ENODEV;
+
+ bank = d->ctrl->pin_banks;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ if (bank->eint_type != EINT_TYPE_WKUP)
+ continue;
+
+ bank->irq_domain = irq_domain_add_linear(bank->of_node,
+ bank->nr_pins, &exynos_wkup_irqd_ops, bank);
+ if (!bank->irq_domain) {
+ dev_err(dev, "wkup irq domain add failed\n");
+ return -ENXIO;
+ }
+
+ if (!of_find_property(bank->of_node, "interrupts", NULL)) {
+ bank->eint_type = EINT_TYPE_WKUP_MUX;
+ ++muxed_banks;
+ continue;
+ }
+
+ weint_data = devm_kzalloc(dev, bank->nr_pins
+ * sizeof(*weint_data), GFP_KERNEL);
+ if (!weint_data) {
+ dev_err(dev, "could not allocate memory for weint_data\n");
+ return -ENOMEM;
+ }
+
+ for (idx = 0; idx < bank->nr_pins; ++idx) {
+ irq = irq_of_parse_and_map(bank->of_node, idx);
+ if (!irq) {
+ dev_err(dev, "irq number for eint-%s-%d not found\n",
+ bank->name, idx);
+ continue;
+ }
+ weint_data[idx].irq = idx;
+ weint_data[idx].bank = bank;
+ irq_set_handler_data(irq, &weint_data[idx]);
+ irq_set_chained_handler(irq, exynos_irq_eint0_15);
+ }
+ }
+
+ if (!muxed_banks)
+ return 0;
+
+ irq = irq_of_parse_and_map(wkup_np, 0);
+ if (!irq) {
+ dev_err(dev, "irq number for muxed EINTs not found\n");
+ return 0;
+ }
+
+ muxed_data = devm_kzalloc(dev, sizeof(*muxed_data)
+ + muxed_banks*sizeof(struct samsung_pin_bank *), GFP_KERNEL);
+ if (!muxed_data) {
+ dev_err(dev, "could not allocate memory for muxed_data\n");
+ return -ENOMEM;
+ }
+
+ irq_set_chained_handler(irq, exynos_irq_demux_eint16_31);
+ irq_set_handler_data(irq, muxed_data);
+
+ bank = d->ctrl->pin_banks;
+ idx = 0;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ if (bank->eint_type != EINT_TYPE_WKUP_MUX)
+ continue;
+
+ muxed_data->banks[idx++] = bank;
+ }
+ muxed_data->nr_banks = muxed_banks;
+
+ return 0;
+}
+
+static void exynos_pinctrl_suspend_bank(
+ struct samsung_pinctrl_drv_data *drvdata,
+ struct samsung_pin_bank *bank)
+{
+ struct exynos_eint_gpio_save *save = bank->soc_priv;
+ void __iomem *regs = drvdata->virt_base;
+
+ save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET
+ + bank->eint_offset);
+ save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
+ + 2 * bank->eint_offset);
+ save->eint_fltcon1 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
+ + 2 * bank->eint_offset + 4);
+
+ pr_debug("%s: save con %#010x\n", bank->name, save->eint_con);
+ pr_debug("%s: save fltcon0 %#010x\n", bank->name, save->eint_fltcon0);
+ pr_debug("%s: save fltcon1 %#010x\n", bank->name, save->eint_fltcon1);
+}
+
+static void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
+ struct samsung_pin_bank *bank = ctrl->pin_banks;
+ int i;
+
+ for (i = 0; i < ctrl->nr_banks; ++i, ++bank)
+ if (bank->eint_type == EINT_TYPE_GPIO)
+ exynos_pinctrl_suspend_bank(drvdata, bank);
+}
+
+static void exynos_pinctrl_resume_bank(
+ struct samsung_pinctrl_drv_data *drvdata,
+ struct samsung_pin_bank *bank)
+{
+ struct exynos_eint_gpio_save *save = bank->soc_priv;
+ void __iomem *regs = drvdata->virt_base;
+
+ pr_debug("%s: con %#010x => %#010x\n", bank->name,
+ readl(regs + EXYNOS_GPIO_ECON_OFFSET
+ + bank->eint_offset), save->eint_con);
+ pr_debug("%s: fltcon0 %#010x => %#010x\n", bank->name,
+ readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
+ + 2 * bank->eint_offset), save->eint_fltcon0);
+ pr_debug("%s: fltcon1 %#010x => %#010x\n", bank->name,
+ readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
+ + 2 * bank->eint_offset + 4), save->eint_fltcon1);
+
+ writel(save->eint_con, regs + EXYNOS_GPIO_ECON_OFFSET
+ + bank->eint_offset);
+ writel(save->eint_fltcon0, regs + EXYNOS_GPIO_EFLTCON_OFFSET
+ + 2 * bank->eint_offset);
+ writel(save->eint_fltcon1, regs + EXYNOS_GPIO_EFLTCON_OFFSET
+ + 2 * bank->eint_offset + 4);
+}
+
+static void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
+ struct samsung_pin_bank *bank = ctrl->pin_banks;
+ int i;
+
+ for (i = 0; i < ctrl->nr_banks; ++i, ++bank)
+ if (bank->eint_type == EINT_TYPE_GPIO)
+ exynos_pinctrl_resume_bank(drvdata, bank);
+}
+
+/* pin banks of s5pv210 pin-controller */
+static struct samsung_pin_bank s5pv210_pin_bank[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(4, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0a0, "gpd0", 0x14),
+ EXYNOS_PIN_BANK_EINTG(6, 0x0c0, "gpd1", 0x18),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0e0, "gpe0", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x100, "gpe1", 0x20),
+ EXYNOS_PIN_BANK_EINTG(8, 0x120, "gpf0", 0x24),
+ EXYNOS_PIN_BANK_EINTG(8, 0x140, "gpf1", 0x28),
+ EXYNOS_PIN_BANK_EINTG(8, 0x160, "gpf2", 0x2c),
+ EXYNOS_PIN_BANK_EINTG(6, 0x180, "gpf3", 0x30),
+ EXYNOS_PIN_BANK_EINTG(7, 0x1a0, "gpg0", 0x34),
+ EXYNOS_PIN_BANK_EINTG(7, 0x1c0, "gpg1", 0x38),
+ EXYNOS_PIN_BANK_EINTG(7, 0x1e0, "gpg2", 0x3c),
+ EXYNOS_PIN_BANK_EINTG(7, 0x200, "gpg3", 0x40),
+ EXYNOS_PIN_BANK_EINTN(7, 0x220, "gpi"),
+ EXYNOS_PIN_BANK_EINTG(8, 0x240, "gpj0", 0x44),
+ EXYNOS_PIN_BANK_EINTG(6, 0x260, "gpj1", 0x48),
+ EXYNOS_PIN_BANK_EINTG(8, 0x280, "gpj2", 0x4c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x2a0, "gpj3", 0x50),
+ EXYNOS_PIN_BANK_EINTG(5, 0x2c0, "gpj4", 0x54),
+ EXYNOS_PIN_BANK_EINTN(8, 0x2e0, "mp01"),
+ EXYNOS_PIN_BANK_EINTN(4, 0x300, "mp02"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x320, "mp03"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x340, "mp04"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x360, "mp05"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x380, "mp06"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x3a0, "mp07"),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc00, "gph0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc20, "gph1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc40, "gph2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc60, "gph3", 0x0c),
+};
+
+struct samsung_pin_ctrl s5pv210_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = s5pv210_pin_bank,
+ .nr_banks = ARRAY_SIZE(s5pv210_pin_bank),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "s5pv210-gpio-ctrl0",
+ },
+};
+
+/* pin banks of exynos3250 pin-controller 0 */
+static struct samsung_pin_bank exynos3250_pin_banks0[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0a0, "gpd0", 0x14),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0c0, "gpd1", 0x18),
+};
+
+/* pin banks of exynos3250 pin-controller 1 */
+static struct samsung_pin_bank exynos3250_pin_banks1[] = {
+ EXYNOS_PIN_BANK_EINTN(8, 0x120, "gpe0"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x140, "gpe1"),
+ EXYNOS_PIN_BANK_EINTN(3, 0x180, "gpe2"),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpk0", 0x08),
+ EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0c0, "gpl0", 0x18),
+ EXYNOS_PIN_BANK_EINTG(8, 0x260, "gpm0", 0x24),
+ EXYNOS_PIN_BANK_EINTG(7, 0x280, "gpm1", 0x28),
+ EXYNOS_PIN_BANK_EINTG(5, 0x2a0, "gpm2", 0x2c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x2c0, "gpm3", 0x30),
+ EXYNOS_PIN_BANK_EINTG(8, 0x2e0, "gpm4", 0x34),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc00, "gpx0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc20, "gpx1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc40, "gpx2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc60, "gpx3", 0x0c),
+};
+
+/*
+ * Samsung pinctrl driver data for Exynos3250 SoC. Exynos3250 SoC includes
+ * two gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pin_ctrl exynos3250_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = exynos3250_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos3250_pin_banks0),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos3250-gpio-ctrl0",
+ }, {
+ /* pin-controller instance 1 data */
+ .pin_banks = exynos3250_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos3250_pin_banks1),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos3250-gpio-ctrl1",
+ },
+};
+
+/* pin banks of exynos4210 pin-controller 0 */
+static struct samsung_pin_bank exynos4210_pin_banks0[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpd0", 0x14),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpd1", 0x18),
+ EXYNOS_PIN_BANK_EINTG(5, 0x0E0, "gpe0", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpe1", 0x20),
+ EXYNOS_PIN_BANK_EINTG(6, 0x120, "gpe2", 0x24),
+ EXYNOS_PIN_BANK_EINTG(8, 0x140, "gpe3", 0x28),
+ EXYNOS_PIN_BANK_EINTG(8, 0x160, "gpe4", 0x2c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf0", 0x30),
+ EXYNOS_PIN_BANK_EINTG(8, 0x1A0, "gpf1", 0x34),
+ EXYNOS_PIN_BANK_EINTG(8, 0x1C0, "gpf2", 0x38),
+ EXYNOS_PIN_BANK_EINTG(6, 0x1E0, "gpf3", 0x3c),
+};
+
+/* pin banks of exynos4210 pin-controller 1 */
+static struct samsung_pin_bank exynos4210_pin_banks1[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpj0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(5, 0x020, "gpj1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpk0", 0x08),
+ EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
+ EXYNOS_PIN_BANK_EINTG(7, 0x0A0, "gpk3", 0x14),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0C0, "gpl0", 0x18),
+ EXYNOS_PIN_BANK_EINTG(3, 0x0E0, "gpl1", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpl2", 0x20),
+ EXYNOS_PIN_BANK_EINTN(6, 0x120, "gpy0"),
+ EXYNOS_PIN_BANK_EINTN(4, 0x140, "gpy1"),
+ EXYNOS_PIN_BANK_EINTN(6, 0x160, "gpy2"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy3"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x1A0, "gpy4"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x1C0, "gpy5"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x1E0, "gpy6"),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
+};
+
+/* pin banks of exynos4210 pin-controller 2 */
+static struct samsung_pin_bank exynos4210_pin_banks2[] = {
+ EXYNOS_PIN_BANK_EINTN(7, 0x000, "gpz"),
+};
+
+/*
+ * Samsung pinctrl driver data for Exynos4210 SoC. Exynos4210 SoC includes
+ * three gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pin_ctrl exynos4210_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = exynos4210_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos4210_pin_banks0),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos4210-gpio-ctrl0",
+ }, {
+ /* pin-controller instance 1 data */
+ .pin_banks = exynos4210_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos4210_pin_banks1),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos4210-gpio-ctrl1",
+ }, {
+ /* pin-controller instance 2 data */
+ .pin_banks = exynos4210_pin_banks2,
+ .nr_banks = ARRAY_SIZE(exynos4210_pin_banks2),
+ .label = "exynos4210-gpio-ctrl2",
+ },
+};
+
+/* pin banks of exynos4x12 pin-controller 0 */
+static struct samsung_pin_bank exynos4x12_pin_banks0[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpd0", 0x14),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpd1", 0x18),
+ EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf0", 0x30),
+ EXYNOS_PIN_BANK_EINTG(8, 0x1A0, "gpf1", 0x34),
+ EXYNOS_PIN_BANK_EINTG(8, 0x1C0, "gpf2", 0x38),
+ EXYNOS_PIN_BANK_EINTG(6, 0x1E0, "gpf3", 0x3c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x240, "gpj0", 0x40),
+ EXYNOS_PIN_BANK_EINTG(5, 0x260, "gpj1", 0x44),
+};
+
+/* pin banks of exynos4x12 pin-controller 1 */
+static struct samsung_pin_bank exynos4x12_pin_banks1[] = {
+ EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpk0", 0x08),
+ EXYNOS_PIN_BANK_EINTG(7, 0x060, "gpk1", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(7, 0x080, "gpk2", 0x10),
+ EXYNOS_PIN_BANK_EINTG(7, 0x0A0, "gpk3", 0x14),
+ EXYNOS_PIN_BANK_EINTG(7, 0x0C0, "gpl0", 0x18),
+ EXYNOS_PIN_BANK_EINTG(2, 0x0E0, "gpl1", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpl2", 0x20),
+ EXYNOS_PIN_BANK_EINTG(8, 0x260, "gpm0", 0x24),
+ EXYNOS_PIN_BANK_EINTG(7, 0x280, "gpm1", 0x28),
+ EXYNOS_PIN_BANK_EINTG(5, 0x2A0, "gpm2", 0x2c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x2C0, "gpm3", 0x30),
+ EXYNOS_PIN_BANK_EINTG(8, 0x2E0, "gpm4", 0x34),
+ EXYNOS_PIN_BANK_EINTN(6, 0x120, "gpy0"),
+ EXYNOS_PIN_BANK_EINTN(4, 0x140, "gpy1"),
+ EXYNOS_PIN_BANK_EINTN(6, 0x160, "gpy2"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy3"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x1A0, "gpy4"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x1C0, "gpy5"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x1E0, "gpy6"),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
+};
+
+/* pin banks of exynos4x12 pin-controller 2 */
+static struct samsung_pin_bank exynos4x12_pin_banks2[] = {
+ EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
+};
+
+/* pin banks of exynos4x12 pin-controller 3 */
+static struct samsung_pin_bank exynos4x12_pin_banks3[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpv0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpv1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpv2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpv3", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(2, 0x080, "gpv4", 0x10),
+};
+
+/*
+ * Samsung pinctrl driver data for Exynos4x12 SoC. Exynos4x12 SoC includes
+ * four gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pin_ctrl exynos4x12_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = exynos4x12_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks0),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos4x12-gpio-ctrl0",
+ }, {
+ /* pin-controller instance 1 data */
+ .pin_banks = exynos4x12_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks1),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos4x12-gpio-ctrl1",
+ }, {
+ /* pin-controller instance 2 data */
+ .pin_banks = exynos4x12_pin_banks2,
+ .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks2),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos4x12-gpio-ctrl2",
+ }, {
+ /* pin-controller instance 3 data */
+ .pin_banks = exynos4x12_pin_banks3,
+ .nr_banks = ARRAY_SIZE(exynos4x12_pin_banks3),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos4x12-gpio-ctrl3",
+ },
+};
+
+/* pin banks of exynos5250 pin-controller 0 */
+static struct samsung_pin_bank exynos5250_pin_banks0[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpb1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpb2", 0x14),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0C0, "gpb3", 0x18),
+ EXYNOS_PIN_BANK_EINTG(7, 0x0E0, "gpc0", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(4, 0x100, "gpc1", 0x20),
+ EXYNOS_PIN_BANK_EINTG(7, 0x120, "gpc2", 0x24),
+ EXYNOS_PIN_BANK_EINTG(7, 0x140, "gpc3", 0x28),
+ EXYNOS_PIN_BANK_EINTG(4, 0x160, "gpd0", 0x2c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpd1", 0x30),
+ EXYNOS_PIN_BANK_EINTG(7, 0x2E0, "gpc4", 0x34),
+ EXYNOS_PIN_BANK_EINTN(6, 0x1A0, "gpy0"),
+ EXYNOS_PIN_BANK_EINTN(4, 0x1C0, "gpy1"),
+ EXYNOS_PIN_BANK_EINTN(6, 0x1E0, "gpy2"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x200, "gpy3"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x220, "gpy4"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x240, "gpy5"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x260, "gpy6"),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
+};
+
+/* pin banks of exynos5250 pin-controller 1 */
+static struct samsung_pin_bank exynos5250_pin_banks1[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpe0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(2, 0x020, "gpe1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(4, 0x040, "gpf0", 0x08),
+ EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpf1", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpg0", 0x10),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpg1", 0x14),
+ EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpg2", 0x18),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0E0, "gph0", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x100, "gph1", 0x20),
+};
+
+/* pin banks of exynos5250 pin-controller 2 */
+static struct samsung_pin_bank exynos5250_pin_banks2[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpv0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpv1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpv2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpv3", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpv4", 0x10),
+};
+
+/* pin banks of exynos5250 pin-controller 3 */
+static struct samsung_pin_bank exynos5250_pin_banks3[] = {
+ EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
+};
+
+/*
+ * Samsung pinctrl driver data for Exynos5250 SoC. Exynos5250 SoC includes
+ * four gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pin_ctrl exynos5250_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = exynos5250_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos5250_pin_banks0),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos5250-gpio-ctrl0",
+ }, {
+ /* pin-controller instance 1 data */
+ .pin_banks = exynos5250_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos5250_pin_banks1),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos5250-gpio-ctrl1",
+ }, {
+ /* pin-controller instance 2 data */
+ .pin_banks = exynos5250_pin_banks2,
+ .nr_banks = ARRAY_SIZE(exynos5250_pin_banks2),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos5250-gpio-ctrl2",
+ }, {
+ /* pin-controller instance 3 data */
+ .pin_banks = exynos5250_pin_banks3,
+ .nr_banks = ARRAY_SIZE(exynos5250_pin_banks3),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .suspend = exynos_pinctrl_suspend,
+ .resume = exynos_pinctrl_resume,
+ .label = "exynos5250-gpio-ctrl3",
+ },
+};
+
+/* pin banks of exynos5260 pin-controller 0 */
+static struct samsung_pin_bank exynos5260_pin_banks0[] = {
+ EXYNOS_PIN_BANK_EINTG(4, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(7, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(4, 0x080, "gpb1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(5, 0x0a0, "gpb2", 0x14),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0c0, "gpb3", 0x18),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0e0, "gpb4", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpb5", 0x20),
+ EXYNOS_PIN_BANK_EINTG(8, 0x120, "gpd0", 0x24),
+ EXYNOS_PIN_BANK_EINTG(7, 0x140, "gpd1", 0x28),
+ EXYNOS_PIN_BANK_EINTG(5, 0x160, "gpd2", 0x2c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpe0", 0x30),
+ EXYNOS_PIN_BANK_EINTG(5, 0x1a0, "gpe1", 0x34),
+ EXYNOS_PIN_BANK_EINTG(4, 0x1c0, "gpf0", 0x38),
+ EXYNOS_PIN_BANK_EINTG(8, 0x1e0, "gpf1", 0x3c),
+ EXYNOS_PIN_BANK_EINTG(2, 0x200, "gpk0", 0x40),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc00, "gpx0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc20, "gpx1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc40, "gpx2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xc60, "gpx3", 0x0c),
+};
+
+/* pin banks of exynos5260 pin-controller 1 */
+static struct samsung_pin_bank exynos5260_pin_banks1[] = {
+ EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpc0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpc1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpc2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpc3", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(4, 0x080, "gpc4", 0x10),
+};
+
+/* pin banks of exynos5260 pin-controller 2 */
+static struct samsung_pin_bank exynos5260_pin_banks2[] = {
+ EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(4, 0x020, "gpz1", 0x04),
+};
+
+/*
+ * Samsung pinctrl driver data for Exynos5260 SoC. Exynos5260 SoC includes
+ * three gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pin_ctrl exynos5260_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = exynos5260_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos5260_pin_banks0),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .label = "exynos5260-gpio-ctrl0",
+ }, {
+ /* pin-controller instance 1 data */
+ .pin_banks = exynos5260_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos5260_pin_banks1),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .label = "exynos5260-gpio-ctrl1",
+ }, {
+ /* pin-controller instance 2 data */
+ .pin_banks = exynos5260_pin_banks2,
+ .nr_banks = ARRAY_SIZE(exynos5260_pin_banks2),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .label = "exynos5260-gpio-ctrl2",
+ },
+};
+
+/* pin banks of exynos5420 pin-controller 0 */
+static struct samsung_pin_bank exynos5420_pin_banks0[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpy7", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC00, "gpx0", 0x00),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC20, "gpx1", 0x04),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC40, "gpx2", 0x08),
+ EXYNOS_PIN_BANK_EINTW(8, 0xC60, "gpx3", 0x0c),
+};
+
+/* pin banks of exynos5420 pin-controller 1 */
+static struct samsung_pin_bank exynos5420_pin_banks1[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpc0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(8, 0x020, "gpc1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(7, 0x040, "gpc2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(4, 0x060, "gpc3", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(2, 0x080, "gpc4", 0x10),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpd1", 0x14),
+ EXYNOS_PIN_BANK_EINTN(6, 0x0C0, "gpy0"),
+ EXYNOS_PIN_BANK_EINTN(4, 0x0E0, "gpy1"),
+ EXYNOS_PIN_BANK_EINTN(6, 0x100, "gpy2"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x120, "gpy3"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x140, "gpy4"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x160, "gpy5"),
+ EXYNOS_PIN_BANK_EINTN(8, 0x180, "gpy6"),
+};
+
+/* pin banks of exynos5420 pin-controller 2 */
+static struct samsung_pin_bank exynos5420_pin_banks2[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpe0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(2, 0x020, "gpe1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(6, 0x040, "gpf0", 0x08),
+ EXYNOS_PIN_BANK_EINTG(8, 0x060, "gpf1", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x080, "gpg0", 0x10),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0A0, "gpg1", 0x14),
+ EXYNOS_PIN_BANK_EINTG(2, 0x0C0, "gpg2", 0x18),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0E0, "gpj4", 0x1c),
+};
+
+/* pin banks of exynos5420 pin-controller 3 */
+static struct samsung_pin_bank exynos5420_pin_banks3[] = {
+ EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00),
+ EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04),
+ EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpa2", 0x08),
+ EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpb0", 0x0c),
+ EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpb1", 0x10),
+ EXYNOS_PIN_BANK_EINTG(4, 0x0A0, "gpb2", 0x14),
+ EXYNOS_PIN_BANK_EINTG(8, 0x0C0, "gpb3", 0x18),
+ EXYNOS_PIN_BANK_EINTG(2, 0x0E0, "gpb4", 0x1c),
+ EXYNOS_PIN_BANK_EINTG(8, 0x100, "gph0", 0x20),
+};
+
+/* pin banks of exynos5420 pin-controller 4 */
+static struct samsung_pin_bank exynos5420_pin_banks4[] = {
+ EXYNOS_PIN_BANK_EINTG(7, 0x000, "gpz", 0x00),
+};
+
+/*
+ * Samsung pinctrl driver data for Exynos5420 SoC. Exynos5420 SoC includes
+ * four gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pin_ctrl exynos5420_pin_ctrl[] = {
+ {
+ /* pin-controller instance 0 data */
+ .pin_banks = exynos5420_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos5420_pin_banks0),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .eint_wkup_init = exynos_eint_wkup_init,
+ .label = "exynos5420-gpio-ctrl0",
+ }, {
+ /* pin-controller instance 1 data */
+ .pin_banks = exynos5420_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos5420_pin_banks1),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .label = "exynos5420-gpio-ctrl1",
+ }, {
+ /* pin-controller instance 2 data */
+ .pin_banks = exynos5420_pin_banks2,
+ .nr_banks = ARRAY_SIZE(exynos5420_pin_banks2),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .label = "exynos5420-gpio-ctrl2",
+ }, {
+ /* pin-controller instance 3 data */
+ .pin_banks = exynos5420_pin_banks3,
+ .nr_banks = ARRAY_SIZE(exynos5420_pin_banks3),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .label = "exynos5420-gpio-ctrl3",
+ }, {
+ /* pin-controller instance 4 data */
+ .pin_banks = exynos5420_pin_banks4,
+ .nr_banks = ARRAY_SIZE(exynos5420_pin_banks4),
+ .eint_gpio_init = exynos_eint_gpio_init,
+ .label = "exynos5420-gpio-ctrl4",
+ },
+};
--- /dev/null
+/*
+ * Exynos specific definitions for Samsung pinctrl and gpiolib driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Copyright (c) 2012 Linaro Ltd
+ * http://www.linaro.org
+ *
+ * This file contains the Exynos specific definitions for the Samsung
+ * pinctrl/gpiolib interface drivers.
+ *
+ * Author: Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+/* External GPIO and wakeup interrupt related definitions */
+#define EXYNOS_GPIO_ECON_OFFSET 0x700
+#define EXYNOS_GPIO_EFLTCON_OFFSET 0x800
+#define EXYNOS_GPIO_EMASK_OFFSET 0x900
+#define EXYNOS_GPIO_EPEND_OFFSET 0xA00
+#define EXYNOS_WKUP_ECON_OFFSET 0xE00
+#define EXYNOS_WKUP_EMASK_OFFSET 0xF00
+#define EXYNOS_WKUP_EPEND_OFFSET 0xF40
+#define EXYNOS_SVC_OFFSET 0xB08
+#define EXYNOS_EINT_FUNC 0xF
+
+/* helpers to access interrupt service register */
+#define EXYNOS_SVC_GROUP_SHIFT 3
+#define EXYNOS_SVC_GROUP_MASK 0x1f
+#define EXYNOS_SVC_NUM_MASK 7
+#define EXYNOS_SVC_GROUP(x) ((x >> EXYNOS_SVC_GROUP_SHIFT) & \
+ EXYNOS_SVC_GROUP_MASK)
+
+/* Exynos specific external interrupt trigger types */
+#define EXYNOS_EINT_LEVEL_LOW 0
+#define EXYNOS_EINT_LEVEL_HIGH 1
+#define EXYNOS_EINT_EDGE_FALLING 2
+#define EXYNOS_EINT_EDGE_RISING 3
+#define EXYNOS_EINT_EDGE_BOTH 4
+#define EXYNOS_EINT_CON_MASK 0xF
+#define EXYNOS_EINT_CON_LEN 4
+
+#define EXYNOS_EINT_MAX_PER_BANK 8
+#define EXYNOS_EINT_NR_WKUP_EINT
+
+#define EXYNOS_PIN_BANK_EINTN(pins, reg, id) \
+ { \
+ .type = &bank_type_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_NONE, \
+ .name = id \
+ }
+
+#define EXYNOS_PIN_BANK_EINTG(pins, reg, id, offs) \
+ { \
+ .type = &bank_type_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_GPIO, \
+ .eint_offset = offs, \
+ .name = id \
+ }
+
+#define EXYNOS_PIN_BANK_EINTW(pins, reg, id, offs) \
+ { \
+ .type = &bank_type_alive, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_WKUP, \
+ .eint_offset = offs, \
+ .name = id \
+ }
+
+/**
+ * struct exynos_weint_data: irq specific data for all the wakeup interrupts
+ * generated by the external wakeup interrupt controller.
+ * @irq: interrupt number within the domain.
+ * @bank: bank responsible for this interrupt
+ */
+struct exynos_weint_data {
+ unsigned int irq;
+ struct samsung_pin_bank *bank;
+};
+
+/**
+ * struct exynos_muxed_weint_data: irq specific data for muxed wakeup interrupts
+ * generated by the external wakeup interrupt controller.
+ * @nr_banks: count of banks being part of the mux
+ * @banks: array of banks being part of the mux
+ */
+struct exynos_muxed_weint_data {
+ unsigned int nr_banks;
+ struct samsung_pin_bank *banks[];
+};
--- /dev/null
+/*
+ * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's EXYNOS5440 SoC.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/of_irq.h>
+#include "../core.h"
+
+/* EXYNOS5440 GPIO and Pinctrl register offsets */
+#define GPIO_MUX 0x00
+#define GPIO_IE 0x04
+#define GPIO_INT 0x08
+#define GPIO_TYPE 0x0C
+#define GPIO_VAL 0x10
+#define GPIO_OE 0x14
+#define GPIO_IN 0x18
+#define GPIO_PE 0x1C
+#define GPIO_PS 0x20
+#define GPIO_SR 0x24
+#define GPIO_DS0 0x28
+#define GPIO_DS1 0x2C
+
+#define EXYNOS5440_MAX_PINS 23
+#define EXYNOS5440_MAX_GPIO_INT 8
+#define PIN_NAME_LENGTH 10
+
+#define GROUP_SUFFIX "-grp"
+#define GSUFFIX_LEN sizeof(GROUP_SUFFIX)
+#define FUNCTION_SUFFIX "-mux"
+#define FSUFFIX_LEN sizeof(FUNCTION_SUFFIX)
+
+/*
+ * pin configuration type and its value are packed together into a 16-bits.
+ * The upper 8-bits represent the configuration type and the lower 8-bits
+ * hold the value of the configuration type.
+ */
+#define PINCFG_TYPE_MASK 0xFF
+#define PINCFG_VALUE_SHIFT 8
+#define PINCFG_VALUE_MASK (0xFF << PINCFG_VALUE_SHIFT)
+#define PINCFG_PACK(type, value) (((value) << PINCFG_VALUE_SHIFT) | type)
+#define PINCFG_UNPACK_TYPE(cfg) ((cfg) & PINCFG_TYPE_MASK)
+#define PINCFG_UNPACK_VALUE(cfg) (((cfg) & PINCFG_VALUE_MASK) >> \
+ PINCFG_VALUE_SHIFT)
+
+/**
+ * enum pincfg_type - possible pin configuration types supported.
+ * @PINCFG_TYPE_PUD: Pull up/down configuration.
+ * @PINCFG_TYPE_DRV: Drive strength configuration.
+ * @PINCFG_TYPE_SKEW_RATE: Skew rate configuration.
+ * @PINCFG_TYPE_INPUT_TYPE: Pin input type configuration.
+ */
+enum pincfg_type {
+ PINCFG_TYPE_PUD,
+ PINCFG_TYPE_DRV,
+ PINCFG_TYPE_SKEW_RATE,
+ PINCFG_TYPE_INPUT_TYPE
+};
+
+/**
+ * struct exynos5440_pin_group: represent group of pins for pincfg setting.
+ * @name: name of the pin group, used to lookup the group.
+ * @pins: the pins included in this group.
+ * @num_pins: number of pins included in this group.
+ */
+struct exynos5440_pin_group {
+ const char *name;
+ const unsigned int *pins;
+ u8 num_pins;
+};
+
+/**
+ * struct exynos5440_pmx_func: represent a pin function.
+ * @name: name of the pin function, used to lookup the function.
+ * @groups: one or more names of pin groups that provide this function.
+ * @num_groups: number of groups included in @groups.
+ * @function: the function number to be programmed when selected.
+ */
+struct exynos5440_pmx_func {
+ const char *name;
+ const char **groups;
+ u8 num_groups;
+ unsigned long function;
+};
+
+/**
+ * struct exynos5440_pinctrl_priv_data: driver's private runtime data.
+ * @reg_base: ioremapped based address of the register space.
+ * @gc: gpio chip registered with gpiolib.
+ * @pin_groups: list of pin groups parsed from device tree.
+ * @nr_groups: number of pin groups available.
+ * @pmx_functions: list of pin functions parsed from device tree.
+ * @nr_functions: number of pin functions available.
+ */
+struct exynos5440_pinctrl_priv_data {
+ void __iomem *reg_base;
+ struct gpio_chip *gc;
+ struct irq_domain *irq_domain;
+
+ const struct exynos5440_pin_group *pin_groups;
+ unsigned int nr_groups;
+ const struct exynos5440_pmx_func *pmx_functions;
+ unsigned int nr_functions;
+};
+
+/**
+ * struct exynos5440_gpio_intr_data: private data for gpio interrupts.
+ * @priv: driver's private runtime data.
+ * @gpio_int: gpio interrupt number.
+ */
+struct exynos5440_gpio_intr_data {
+ struct exynos5440_pinctrl_priv_data *priv;
+ unsigned int gpio_int;
+};
+
+/* list of all possible config options supported */
+static struct pin_config {
+ char *prop_cfg;
+ unsigned int cfg_type;
+} pcfgs[] = {
+ { "samsung,exynos5440-pin-pud", PINCFG_TYPE_PUD },
+ { "samsung,exynos5440-pin-drv", PINCFG_TYPE_DRV },
+ { "samsung,exynos5440-pin-skew-rate", PINCFG_TYPE_SKEW_RATE },
+ { "samsung,exynos5440-pin-input-type", PINCFG_TYPE_INPUT_TYPE },
+};
+
+/* check if the selector is a valid pin group selector */
+static int exynos5440_get_group_count(struct pinctrl_dev *pctldev)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ return priv->nr_groups;
+}
+
+/* return the name of the group selected by the group selector */
+static const char *exynos5440_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned selector)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ return priv->pin_groups[selector].name;
+}
+
+/* return the pin numbers associated with the specified group */
+static int exynos5440_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned selector, const unsigned **pins, unsigned *num_pins)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ *pins = priv->pin_groups[selector].pins;
+ *num_pins = priv->pin_groups[selector].num_pins;
+ return 0;
+}
+
+/* create pinctrl_map entries by parsing device tree nodes */
+static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np, struct pinctrl_map **maps,
+ unsigned *nmaps)
+{
+ struct device *dev = pctldev->dev;
+ struct pinctrl_map *map;
+ unsigned long *cfg = NULL;
+ char *gname, *fname;
+ int cfg_cnt = 0, map_cnt = 0, idx = 0;
+
+ /* count the number of config options specfied in the node */
+ for (idx = 0; idx < ARRAY_SIZE(pcfgs); idx++)
+ if (of_find_property(np, pcfgs[idx].prop_cfg, NULL))
+ cfg_cnt++;
+
+ /*
+ * Find out the number of map entries to create. All the config options
+ * can be accomadated into a single config map entry.
+ */
+ if (cfg_cnt)
+ map_cnt = 1;
+ if (of_find_property(np, "samsung,exynos5440-pin-function", NULL))
+ map_cnt++;
+ if (!map_cnt) {
+ dev_err(dev, "node %s does not have either config or function "
+ "configurations\n", np->name);
+ return -EINVAL;
+ }
+
+ /* Allocate memory for pin-map entries */
+ map = kzalloc(sizeof(*map) * map_cnt, GFP_KERNEL);
+ if (!map) {
+ dev_err(dev, "could not alloc memory for pin-maps\n");
+ return -ENOMEM;
+ }
+ *nmaps = 0;
+
+ /*
+ * Allocate memory for pin group name. The pin group name is derived
+ * from the node name from which these map entries are be created.
+ */
+ gname = kzalloc(strlen(np->name) + GSUFFIX_LEN, GFP_KERNEL);
+ if (!gname) {
+ dev_err(dev, "failed to alloc memory for group name\n");
+ goto free_map;
+ }
+ snprintf(gname, strlen(np->name) + 4, "%s%s", np->name, GROUP_SUFFIX);
+
+ /*
+ * don't have config options? then skip over to creating function
+ * map entries.
+ */
+ if (!cfg_cnt)
+ goto skip_cfgs;
+
+ /* Allocate memory for config entries */
+ cfg = kzalloc(sizeof(*cfg) * cfg_cnt, GFP_KERNEL);
+ if (!cfg) {
+ dev_err(dev, "failed to alloc memory for configs\n");
+ goto free_gname;
+ }
+
+ /* Prepare a list of config settings */
+ for (idx = 0, cfg_cnt = 0; idx < ARRAY_SIZE(pcfgs); idx++) {
+ u32 value;
+ if (!of_property_read_u32(np, pcfgs[idx].prop_cfg, &value))
+ cfg[cfg_cnt++] =
+ PINCFG_PACK(pcfgs[idx].cfg_type, value);
+ }
+
+ /* create the config map entry */
+ map[*nmaps].data.configs.group_or_pin = gname;
+ map[*nmaps].data.configs.configs = cfg;
+ map[*nmaps].data.configs.num_configs = cfg_cnt;
+ map[*nmaps].type = PIN_MAP_TYPE_CONFIGS_GROUP;
+ *nmaps += 1;
+
+skip_cfgs:
+ /* create the function map entry */
+ if (of_find_property(np, "samsung,exynos5440-pin-function", NULL)) {
+ fname = kzalloc(strlen(np->name) + FSUFFIX_LEN, GFP_KERNEL);
+ if (!fname) {
+ dev_err(dev, "failed to alloc memory for func name\n");
+ goto free_cfg;
+ }
+ snprintf(fname, strlen(np->name) + 4, "%s%s", np->name,
+ FUNCTION_SUFFIX);
+
+ map[*nmaps].data.mux.group = gname;
+ map[*nmaps].data.mux.function = fname;
+ map[*nmaps].type = PIN_MAP_TYPE_MUX_GROUP;
+ *nmaps += 1;
+ }
+
+ *maps = map;
+ return 0;
+
+free_cfg:
+ kfree(cfg);
+free_gname:
+ kfree(gname);
+free_map:
+ kfree(map);
+ return -ENOMEM;
+}
+
+/* free the memory allocated to hold the pin-map table */
+static void exynos5440_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map, unsigned num_maps)
+{
+ int idx;
+
+ for (idx = 0; idx < num_maps; idx++) {
+ if (map[idx].type == PIN_MAP_TYPE_MUX_GROUP) {
+ kfree(map[idx].data.mux.function);
+ if (!idx)
+ kfree(map[idx].data.mux.group);
+ } else if (map->type == PIN_MAP_TYPE_CONFIGS_GROUP) {
+ kfree(map[idx].data.configs.configs);
+ if (!idx)
+ kfree(map[idx].data.configs.group_or_pin);
+ }
+ };
+
+ kfree(map);
+}
+
+/* list of pinctrl callbacks for the pinctrl core */
+static const struct pinctrl_ops exynos5440_pctrl_ops = {
+ .get_groups_count = exynos5440_get_group_count,
+ .get_group_name = exynos5440_get_group_name,
+ .get_group_pins = exynos5440_get_group_pins,
+ .dt_node_to_map = exynos5440_dt_node_to_map,
+ .dt_free_map = exynos5440_dt_free_map,
+};
+
+/* check if the selector is a valid pin function selector */
+static int exynos5440_get_functions_count(struct pinctrl_dev *pctldev)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ return priv->nr_functions;
+}
+
+/* return the name of the pin function specified */
+static const char *exynos5440_pinmux_get_fname(struct pinctrl_dev *pctldev,
+ unsigned selector)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ return priv->pmx_functions[selector].name;
+}
+
+/* return the groups associated for the specified function selector */
+static int exynos5440_pinmux_get_groups(struct pinctrl_dev *pctldev,
+ unsigned selector, const char * const **groups,
+ unsigned * const num_groups)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ *groups = priv->pmx_functions[selector].groups;
+ *num_groups = priv->pmx_functions[selector].num_groups;
+ return 0;
+}
+
+/* enable or disable a pinmux function */
+static void exynos5440_pinmux_setup(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group, bool enable)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+ void __iomem *base;
+ u32 function;
+ u32 data;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ base = priv->reg_base;
+ function = priv->pmx_functions[selector].function;
+
+ data = readl(base + GPIO_MUX);
+ if (enable)
+ data |= (1 << function);
+ else
+ data &= ~(1 << function);
+ writel(data, base + GPIO_MUX);
+}
+
+/* enable a specified pinmux by writing to registers */
+static int exynos5440_pinmux_enable(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group)
+{
+ exynos5440_pinmux_setup(pctldev, selector, group, true);
+ return 0;
+}
+
+/*
+ * The calls to gpio_direction_output() and gpio_direction_input()
+ * leads to this function call (via the pinctrl_gpio_direction_{input|output}()
+ * function called from the gpiolib interface).
+ */
+static int exynos5440_pinmux_gpio_set_direction(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range, unsigned offset, bool input)
+{
+ return 0;
+}
+
+/* list of pinmux callbacks for the pinmux vertical in pinctrl core */
+static const struct pinmux_ops exynos5440_pinmux_ops = {
+ .get_functions_count = exynos5440_get_functions_count,
+ .get_function_name = exynos5440_pinmux_get_fname,
+ .get_function_groups = exynos5440_pinmux_get_groups,
+ .enable = exynos5440_pinmux_enable,
+ .gpio_set_direction = exynos5440_pinmux_gpio_set_direction,
+};
+
+/* set the pin config settings for a specified pin */
+static int exynos5440_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
+ unsigned long *configs,
+ unsigned num_configs)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+ void __iomem *base;
+ enum pincfg_type cfg_type;
+ u32 cfg_value;
+ u32 data;
+ int i;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ base = priv->reg_base;
+
+ for (i = 0; i < num_configs; i++) {
+ cfg_type = PINCFG_UNPACK_TYPE(configs[i]);
+ cfg_value = PINCFG_UNPACK_VALUE(configs[i]);
+
+ switch (cfg_type) {
+ case PINCFG_TYPE_PUD:
+ /* first set pull enable/disable bit */
+ data = readl(base + GPIO_PE);
+ data &= ~(1 << pin);
+ if (cfg_value)
+ data |= (1 << pin);
+ writel(data, base + GPIO_PE);
+
+ /* then set pull up/down bit */
+ data = readl(base + GPIO_PS);
+ data &= ~(1 << pin);
+ if (cfg_value == 2)
+ data |= (1 << pin);
+ writel(data, base + GPIO_PS);
+ break;
+
+ case PINCFG_TYPE_DRV:
+ /* set the first bit of the drive strength */
+ data = readl(base + GPIO_DS0);
+ data &= ~(1 << pin);
+ data |= ((cfg_value & 1) << pin);
+ writel(data, base + GPIO_DS0);
+ cfg_value >>= 1;
+
+ /* set the second bit of the driver strength */
+ data = readl(base + GPIO_DS1);
+ data &= ~(1 << pin);
+ data |= ((cfg_value & 1) << pin);
+ writel(data, base + GPIO_DS1);
+ break;
+ case PINCFG_TYPE_SKEW_RATE:
+ data = readl(base + GPIO_SR);
+ data &= ~(1 << pin);
+ data |= ((cfg_value & 1) << pin);
+ writel(data, base + GPIO_SR);
+ break;
+ case PINCFG_TYPE_INPUT_TYPE:
+ data = readl(base + GPIO_TYPE);
+ data &= ~(1 << pin);
+ data |= ((cfg_value & 1) << pin);
+ writel(data, base + GPIO_TYPE);
+ break;
+ default:
+ WARN_ON(1);
+ return -EINVAL;
+ }
+ } /* for each config */
+
+ return 0;
+}
+
+/* get the pin config settings for a specified pin */
+static int exynos5440_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
+ unsigned long *config)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+ void __iomem *base;
+ enum pincfg_type cfg_type = PINCFG_UNPACK_TYPE(*config);
+ u32 data;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ base = priv->reg_base;
+
+ switch (cfg_type) {
+ case PINCFG_TYPE_PUD:
+ data = readl(base + GPIO_PE);
+ data = (data >> pin) & 1;
+ if (!data)
+ *config = 0;
+ else
+ *config = ((readl(base + GPIO_PS) >> pin) & 1) + 1;
+ break;
+ case PINCFG_TYPE_DRV:
+ data = readl(base + GPIO_DS0);
+ data = (data >> pin) & 1;
+ *config = data;
+ data = readl(base + GPIO_DS1);
+ data = (data >> pin) & 1;
+ *config |= (data << 1);
+ break;
+ case PINCFG_TYPE_SKEW_RATE:
+ data = readl(base + GPIO_SR);
+ *config = (data >> pin) & 1;
+ break;
+ case PINCFG_TYPE_INPUT_TYPE:
+ data = readl(base + GPIO_TYPE);
+ *config = (data >> pin) & 1;
+ break;
+ default:
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* set the pin config settings for a specified pin group */
+static int exynos5440_pinconf_group_set(struct pinctrl_dev *pctldev,
+ unsigned group, unsigned long *configs,
+ unsigned num_configs)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+ const unsigned int *pins;
+ unsigned int cnt;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ pins = priv->pin_groups[group].pins;
+
+ for (cnt = 0; cnt < priv->pin_groups[group].num_pins; cnt++)
+ exynos5440_pinconf_set(pctldev, pins[cnt], configs,
+ num_configs);
+
+ return 0;
+}
+
+/* get the pin config settings for a specified pin group */
+static int exynos5440_pinconf_group_get(struct pinctrl_dev *pctldev,
+ unsigned int group, unsigned long *config)
+{
+ struct exynos5440_pinctrl_priv_data *priv;
+ const unsigned int *pins;
+
+ priv = pinctrl_dev_get_drvdata(pctldev);
+ pins = priv->pin_groups[group].pins;
+ exynos5440_pinconf_get(pctldev, pins[0], config);
+ return 0;
+}
+
+/* list of pinconfig callbacks for pinconfig vertical in the pinctrl code */
+static const struct pinconf_ops exynos5440_pinconf_ops = {
+ .pin_config_get = exynos5440_pinconf_get,
+ .pin_config_set = exynos5440_pinconf_set,
+ .pin_config_group_get = exynos5440_pinconf_group_get,
+ .pin_config_group_set = exynos5440_pinconf_group_set,
+};
+
+/* gpiolib gpio_set callback function */
+static void exynos5440_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
+{
+ struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
+ void __iomem *base = priv->reg_base;
+ u32 data;
+
+ data = readl(base + GPIO_VAL);
+ data &= ~(1 << offset);
+ if (value)
+ data |= 1 << offset;
+ writel(data, base + GPIO_VAL);
+}
+
+/* gpiolib gpio_get callback function */
+static int exynos5440_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+ struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
+ void __iomem *base = priv->reg_base;
+ u32 data;
+
+ data = readl(base + GPIO_IN);
+ data >>= offset;
+ data &= 1;
+ return data;
+}
+
+/* gpiolib gpio_direction_input callback function */
+static int exynos5440_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
+{
+ struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
+ void __iomem *base = priv->reg_base;
+ u32 data;
+
+ /* first disable the data output enable on this pin */
+ data = readl(base + GPIO_OE);
+ data &= ~(1 << offset);
+ writel(data, base + GPIO_OE);
+
+ /* now enable input on this pin */
+ data = readl(base + GPIO_IE);
+ data |= 1 << offset;
+ writel(data, base + GPIO_IE);
+ return 0;
+}
+
+/* gpiolib gpio_direction_output callback function */
+static int exynos5440_gpio_direction_output(struct gpio_chip *gc, unsigned offset,
+ int value)
+{
+ struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
+ void __iomem *base = priv->reg_base;
+ u32 data;
+
+ exynos5440_gpio_set(gc, offset, value);
+
+ /* first disable the data input enable on this pin */
+ data = readl(base + GPIO_IE);
+ data &= ~(1 << offset);
+ writel(data, base + GPIO_IE);
+
+ /* now enable output on this pin */
+ data = readl(base + GPIO_OE);
+ data |= 1 << offset;
+ writel(data, base + GPIO_OE);
+ return 0;
+}
+
+/* gpiolib gpio_to_irq callback function */
+static int exynos5440_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
+{
+ struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev);
+ unsigned int virq;
+
+ if (offset < 16 || offset > 23)
+ return -ENXIO;
+
+ if (!priv->irq_domain)
+ return -ENXIO;
+
+ virq = irq_create_mapping(priv->irq_domain, offset - 16);
+ return virq ? : -ENXIO;
+}
+
+/* parse the pin numbers listed in the 'samsung,exynos5440-pins' property */
+static int exynos5440_pinctrl_parse_dt_pins(struct platform_device *pdev,
+ struct device_node *cfg_np, unsigned int **pin_list,
+ unsigned int *npins)
+{
+ struct device *dev = &pdev->dev;
+ struct property *prop;
+
+ prop = of_find_property(cfg_np, "samsung,exynos5440-pins", NULL);
+ if (!prop)
+ return -ENOENT;
+
+ *npins = prop->length / sizeof(unsigned long);
+ if (!*npins) {
+ dev_err(dev, "invalid pin list in %s node", cfg_np->name);
+ return -EINVAL;
+ }
+
+ *pin_list = devm_kzalloc(dev, *npins * sizeof(**pin_list), GFP_KERNEL);
+ if (!*pin_list) {
+ dev_err(dev, "failed to allocate memory for pin list\n");
+ return -ENOMEM;
+ }
+
+ return of_property_read_u32_array(cfg_np, "samsung,exynos5440-pins",
+ *pin_list, *npins);
+}
+
+/*
+ * Parse the information about all the available pin groups and pin functions
+ * from device node of the pin-controller.
+ */
+static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev,
+ struct exynos5440_pinctrl_priv_data *priv)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *dev_np = dev->of_node;
+ struct device_node *cfg_np;
+ struct exynos5440_pin_group *groups, *grp;
+ struct exynos5440_pmx_func *functions, *func;
+ unsigned *pin_list;
+ unsigned int npins, grp_cnt, func_idx = 0;
+ char *gname, *fname;
+ int ret;
+
+ grp_cnt = of_get_child_count(dev_np);
+ if (!grp_cnt)
+ return -EINVAL;
+
+ groups = devm_kzalloc(dev, grp_cnt * sizeof(*groups), GFP_KERNEL);
+ if (!groups) {
+ dev_err(dev, "failed allocate memory for ping group list\n");
+ return -EINVAL;
+ }
+ grp = groups;
+
+ functions = devm_kzalloc(dev, grp_cnt * sizeof(*functions), GFP_KERNEL);
+ if (!functions) {
+ dev_err(dev, "failed to allocate memory for function list\n");
+ return -EINVAL;
+ }
+ func = functions;
+
+ /*
+ * Iterate over all the child nodes of the pin controller node
+ * and create pin groups and pin function lists.
+ */
+ for_each_child_of_node(dev_np, cfg_np) {
+ u32 function;
+
+ ret = exynos5440_pinctrl_parse_dt_pins(pdev, cfg_np,
+ &pin_list, &npins);
+ if (ret) {
+ gname = NULL;
+ goto skip_to_pin_function;
+ }
+
+ /* derive pin group name from the node name */
+ gname = devm_kzalloc(dev, strlen(cfg_np->name) + GSUFFIX_LEN,
+ GFP_KERNEL);
+ if (!gname) {
+ dev_err(dev, "failed to alloc memory for group name\n");
+ return -ENOMEM;
+ }
+ snprintf(gname, strlen(cfg_np->name) + 4, "%s%s", cfg_np->name,
+ GROUP_SUFFIX);
+
+ grp->name = gname;
+ grp->pins = pin_list;
+ grp->num_pins = npins;
+ grp++;
+
+skip_to_pin_function:
+ ret = of_property_read_u32(cfg_np, "samsung,exynos5440-pin-function",
+ &function);
+ if (ret)
+ continue;
+
+ /* derive function name from the node name */
+ fname = devm_kzalloc(dev, strlen(cfg_np->name) + FSUFFIX_LEN,
+ GFP_KERNEL);
+ if (!fname) {
+ dev_err(dev, "failed to alloc memory for func name\n");
+ return -ENOMEM;
+ }
+ snprintf(fname, strlen(cfg_np->name) + 4, "%s%s", cfg_np->name,
+ FUNCTION_SUFFIX);
+
+ func->name = fname;
+ func->groups = devm_kzalloc(dev, sizeof(char *), GFP_KERNEL);
+ if (!func->groups) {
+ dev_err(dev, "failed to alloc memory for group list "
+ "in pin function");
+ return -ENOMEM;
+ }
+ func->groups[0] = gname;
+ func->num_groups = gname ? 1 : 0;
+ func->function = function;
+ func++;
+ func_idx++;
+ }
+
+ priv->pin_groups = groups;
+ priv->nr_groups = grp_cnt;
+ priv->pmx_functions = functions;
+ priv->nr_functions = func_idx;
+ return 0;
+}
+
+/* register the pinctrl interface with the pinctrl subsystem */
+static int exynos5440_pinctrl_register(struct platform_device *pdev,
+ struct exynos5440_pinctrl_priv_data *priv)
+{
+ struct device *dev = &pdev->dev;
+ struct pinctrl_desc *ctrldesc;
+ struct pinctrl_dev *pctl_dev;
+ struct pinctrl_pin_desc *pindesc, *pdesc;
+ struct pinctrl_gpio_range grange;
+ char *pin_names;
+ int pin, ret;
+
+ ctrldesc = devm_kzalloc(dev, sizeof(*ctrldesc), GFP_KERNEL);
+ if (!ctrldesc) {
+ dev_err(dev, "could not allocate memory for pinctrl desc\n");
+ return -ENOMEM;
+ }
+
+ ctrldesc->name = "exynos5440-pinctrl";
+ ctrldesc->owner = THIS_MODULE;
+ ctrldesc->pctlops = &exynos5440_pctrl_ops;
+ ctrldesc->pmxops = &exynos5440_pinmux_ops;
+ ctrldesc->confops = &exynos5440_pinconf_ops;
+
+ pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
+ EXYNOS5440_MAX_PINS, GFP_KERNEL);
+ if (!pindesc) {
+ dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
+ return -ENOMEM;
+ }
+ ctrldesc->pins = pindesc;
+ ctrldesc->npins = EXYNOS5440_MAX_PINS;
+
+ /* dynamically populate the pin number and pin name for pindesc */
+ for (pin = 0, pdesc = pindesc; pin < ctrldesc->npins; pin++, pdesc++)
+ pdesc->number = pin;
+
+ /*
+ * allocate space for storing the dynamically generated names for all
+ * the pins which belong to this pin-controller.
+ */
+ pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH *
+ ctrldesc->npins, GFP_KERNEL);
+ if (!pin_names) {
+ dev_err(&pdev->dev, "mem alloc for pin names failed\n");
+ return -ENOMEM;
+ }
+
+ /* for each pin, set the name of the pin */
+ for (pin = 0; pin < ctrldesc->npins; pin++) {
+ snprintf(pin_names, 6, "gpio%02d", pin);
+ pdesc = pindesc + pin;
+ pdesc->name = pin_names;
+ pin_names += PIN_NAME_LENGTH;
+ }
+
+ ret = exynos5440_pinctrl_parse_dt(pdev, priv);
+ if (ret)
+ return ret;
+
+ pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, priv);
+ if (!pctl_dev) {
+ dev_err(&pdev->dev, "could not register pinctrl driver\n");
+ return -EINVAL;
+ }
+
+ grange.name = "exynos5440-pctrl-gpio-range";
+ grange.id = 0;
+ grange.base = 0;
+ grange.npins = EXYNOS5440_MAX_PINS;
+ grange.gc = priv->gc;
+ pinctrl_add_gpio_range(pctl_dev, &grange);
+ return 0;
+}
+
+/* register the gpiolib interface with the gpiolib subsystem */
+static int exynos5440_gpiolib_register(struct platform_device *pdev,
+ struct exynos5440_pinctrl_priv_data *priv)
+{
+ struct gpio_chip *gc;
+ int ret;
+
+ gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
+ if (!gc) {
+ dev_err(&pdev->dev, "mem alloc for gpio_chip failed\n");
+ return -ENOMEM;
+ }
+
+ priv->gc = gc;
+ gc->base = 0;
+ gc->ngpio = EXYNOS5440_MAX_PINS;
+ gc->dev = &pdev->dev;
+ gc->set = exynos5440_gpio_set;
+ gc->get = exynos5440_gpio_get;
+ gc->direction_input = exynos5440_gpio_direction_input;
+ gc->direction_output = exynos5440_gpio_direction_output;
+ gc->to_irq = exynos5440_gpio_to_irq;
+ gc->label = "gpiolib-exynos5440";
+ gc->owner = THIS_MODULE;
+ ret = gpiochip_add(gc);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register gpio_chip %s, error "
+ "code: %d\n", gc->label, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* unregister the gpiolib interface with the gpiolib subsystem */
+static int exynos5440_gpiolib_unregister(struct platform_device *pdev,
+ struct exynos5440_pinctrl_priv_data *priv)
+{
+ int ret = gpiochip_remove(priv->gc);
+ if (ret) {
+ dev_err(&pdev->dev, "gpio chip remove failed\n");
+ return ret;
+ }
+ return 0;
+}
+
+static void exynos5440_gpio_irq_unmask(struct irq_data *irqd)
+{
+ struct exynos5440_pinctrl_priv_data *d;
+ unsigned long gpio_int;
+
+ d = irq_data_get_irq_chip_data(irqd);
+ gpio_int = readl(d->reg_base + GPIO_INT);
+ gpio_int |= 1 << irqd->hwirq;
+ writel(gpio_int, d->reg_base + GPIO_INT);
+}
+
+static void exynos5440_gpio_irq_mask(struct irq_data *irqd)
+{
+ struct exynos5440_pinctrl_priv_data *d;
+ unsigned long gpio_int;
+
+ d = irq_data_get_irq_chip_data(irqd);
+ gpio_int = readl(d->reg_base + GPIO_INT);
+ gpio_int &= ~(1 << irqd->hwirq);
+ writel(gpio_int, d->reg_base + GPIO_INT);
+}
+
+/* irq_chip for gpio interrupts */
+static struct irq_chip exynos5440_gpio_irq_chip = {
+ .name = "exynos5440_gpio_irq_chip",
+ .irq_unmask = exynos5440_gpio_irq_unmask,
+ .irq_mask = exynos5440_gpio_irq_mask,
+};
+
+/* interrupt handler for GPIO interrupts 0..7 */
+static irqreturn_t exynos5440_gpio_irq(int irq, void *data)
+{
+ struct exynos5440_gpio_intr_data *intd = data;
+ struct exynos5440_pinctrl_priv_data *d = intd->priv;
+ int virq;
+
+ virq = irq_linear_revmap(d->irq_domain, intd->gpio_int);
+ if (!virq)
+ return IRQ_NONE;
+ generic_handle_irq(virq);
+ return IRQ_HANDLED;
+}
+
+static int exynos5440_gpio_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct exynos5440_pinctrl_priv_data *d = h->host_data;
+
+ irq_set_chip_data(virq, d);
+ irq_set_chip_and_handler(virq, &exynos5440_gpio_irq_chip,
+ handle_level_irq);
+ set_irq_flags(virq, IRQF_VALID);
+ return 0;
+}
+
+/* irq domain callbacks for gpio interrupt controller */
+static const struct irq_domain_ops exynos5440_gpio_irqd_ops = {
+ .map = exynos5440_gpio_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+/* setup handling of gpio interrupts */
+static int exynos5440_gpio_irq_init(struct platform_device *pdev,
+ struct exynos5440_pinctrl_priv_data *priv)
+{
+ struct device *dev = &pdev->dev;
+ struct exynos5440_gpio_intr_data *intd;
+ int i, irq, ret;
+
+ intd = devm_kzalloc(dev, sizeof(*intd) * EXYNOS5440_MAX_GPIO_INT,
+ GFP_KERNEL);
+ if (!intd) {
+ dev_err(dev, "failed to allocate memory for gpio intr data\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < EXYNOS5440_MAX_GPIO_INT; i++) {
+ irq = irq_of_parse_and_map(dev->of_node, i);
+ if (irq <= 0) {
+ dev_err(dev, "irq parsing failed\n");
+ return -EINVAL;
+ }
+
+ intd->gpio_int = i;
+ intd->priv = priv;
+ ret = devm_request_irq(dev, irq, exynos5440_gpio_irq,
+ 0, dev_name(dev), intd++);
+ if (ret) {
+ dev_err(dev, "irq request failed\n");
+ return -ENXIO;
+ }
+ }
+
+ priv->irq_domain = irq_domain_add_linear(dev->of_node,
+ EXYNOS5440_MAX_GPIO_INT,
+ &exynos5440_gpio_irqd_ops, priv);
+ if (!priv->irq_domain) {
+ dev_err(dev, "failed to create irq domain\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int exynos5440_pinctrl_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct exynos5440_pinctrl_priv_data *priv;
+ struct resource *res;
+ int ret;
+
+ if (!dev->of_node) {
+ dev_err(dev, "device tree node not found\n");
+ return -ENODEV;
+ }
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(dev, "could not allocate memory for private data\n");
+ return -ENOMEM;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->reg_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->reg_base))
+ return PTR_ERR(priv->reg_base);
+
+ ret = exynos5440_gpiolib_register(pdev, priv);
+ if (ret)
+ return ret;
+
+ ret = exynos5440_pinctrl_register(pdev, priv);
+ if (ret) {
+ exynos5440_gpiolib_unregister(pdev, priv);
+ return ret;
+ }
+
+ ret = exynos5440_gpio_irq_init(pdev, priv);
+ if (ret) {
+ dev_err(dev, "failed to setup gpio interrupts\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, priv);
+ dev_info(dev, "EXYNOS5440 pinctrl driver registered\n");
+ return 0;
+}
+
+static const struct of_device_id exynos5440_pinctrl_dt_match[] = {
+ { .compatible = "samsung,exynos5440-pinctrl" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos5440_pinctrl_dt_match);
+
+static struct platform_driver exynos5440_pinctrl_driver = {
+ .probe = exynos5440_pinctrl_probe,
+ .driver = {
+ .name = "exynos5440-pinctrl",
+ .owner = THIS_MODULE,
+ .of_match_table = exynos5440_pinctrl_dt_match,
+ },
+};
+
+static int __init exynos5440_pinctrl_drv_register(void)
+{
+ return platform_driver_register(&exynos5440_pinctrl_driver);
+}
+postcore_initcall(exynos5440_pinctrl_drv_register);
+
+static void __exit exynos5440_pinctrl_drv_unregister(void)
+{
+ platform_driver_unregister(&exynos5440_pinctrl_driver);
+}
+module_exit(exynos5440_pinctrl_drv_unregister);
+
+MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
+MODULE_DESCRIPTION("Samsung EXYNOS5440 SoC pinctrl driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * S3C24XX specific support for Samsung pinctrl/gpiolib driver.
+ *
+ * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This file contains the SamsungS3C24XX specific information required by the
+ * Samsung pinctrl/gpiolib driver. It also includes the implementation of
+ * external gpio and wakeup interrupt support.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/of_irq.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+
+#include "pinctrl-samsung.h"
+
+#define NUM_EINT 24
+#define NUM_EINT_IRQ 6
+#define EINT_MAX_PER_GROUP 8
+
+#define EINTPEND_REG 0xa8
+#define EINTMASK_REG 0xa4
+
+#define EINT_GROUP(i) ((int)((i) / EINT_MAX_PER_GROUP))
+#define EINT_REG(i) ((EINT_GROUP(i) * 4) + 0x88)
+#define EINT_OFFS(i) ((i) % EINT_MAX_PER_GROUP * 4)
+
+#define EINT_LEVEL_LOW 0
+#define EINT_LEVEL_HIGH 1
+#define EINT_EDGE_FALLING 2
+#define EINT_EDGE_RISING 4
+#define EINT_EDGE_BOTH 6
+#define EINT_MASK 0xf
+
+static struct samsung_pin_bank_type bank_type_1bit = {
+ .fld_width = { 1, 1, },
+ .reg_offset = { 0x00, 0x04, },
+};
+
+static struct samsung_pin_bank_type bank_type_2bit = {
+ .fld_width = { 2, 1, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, },
+};
+
+#define PIN_BANK_A(pins, reg, id) \
+ { \
+ .type = &bank_type_1bit, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_NONE, \
+ .name = id \
+ }
+
+#define PIN_BANK_2BIT(pins, reg, id) \
+ { \
+ .type = &bank_type_2bit, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_NONE, \
+ .name = id \
+ }
+
+#define PIN_BANK_2BIT_EINTW(pins, reg, id, eoffs, emask)\
+ { \
+ .type = &bank_type_2bit, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_WKUP, \
+ .eint_func = 2, \
+ .eint_mask = emask, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+/**
+ * struct s3c24xx_eint_data: EINT common data
+ * @drvdata: pin controller driver data
+ * @domains: IRQ domains of particular EINT interrupts
+ * @parents: mapped parent irqs in the main interrupt controller
+ */
+struct s3c24xx_eint_data {
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct irq_domain *domains[NUM_EINT];
+ int parents[NUM_EINT_IRQ];
+};
+
+/**
+ * struct s3c24xx_eint_domain_data: per irq-domain data
+ * @bank: pin bank related to the domain
+ * @eint_data: common data
+ * eint0_3_parent_only: live eints 0-3 only in the main intc
+ */
+struct s3c24xx_eint_domain_data {
+ struct samsung_pin_bank *bank;
+ struct s3c24xx_eint_data *eint_data;
+ bool eint0_3_parent_only;
+};
+
+static int s3c24xx_eint_get_trigger(unsigned int type)
+{
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ return EINT_EDGE_RISING;
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ return EINT_EDGE_FALLING;
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ return EINT_EDGE_BOTH;
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ return EINT_LEVEL_HIGH;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ return EINT_LEVEL_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void s3c24xx_eint_set_handler(unsigned int irq, unsigned int type)
+{
+ /* Edge- and level-triggered interrupts need different handlers */
+ if (type & IRQ_TYPE_EDGE_BOTH)
+ __irq_set_handler_locked(irq, handle_edge_irq);
+ else
+ __irq_set_handler_locked(irq, handle_level_irq);
+}
+
+static void s3c24xx_eint_set_function(struct samsung_pinctrl_drv_data *d,
+ struct samsung_pin_bank *bank, int pin)
+{
+ struct samsung_pin_bank_type *bank_type = bank->type;
+ unsigned long flags;
+ void __iomem *reg;
+ u8 shift;
+ u32 mask;
+ u32 val;
+
+ /* Make sure that pin is configured as interrupt */
+ reg = d->virt_base + bank->pctl_offset;
+ shift = pin * bank_type->fld_width[PINCFG_TYPE_FUNC];
+ mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ val = readl(reg);
+ val &= ~(mask << shift);
+ val |= bank->eint_func << shift;
+ writel(val, reg);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+}
+
+static int s3c24xx_eint_type(struct irq_data *data, unsigned int type)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ int index = bank->eint_offset + data->hwirq;
+ void __iomem *reg;
+ int trigger;
+ u8 shift;
+ u32 val;
+
+ trigger = s3c24xx_eint_get_trigger(type);
+ if (trigger < 0) {
+ dev_err(d->dev, "unsupported external interrupt type\n");
+ return -EINVAL;
+ }
+
+ s3c24xx_eint_set_handler(data->irq, type);
+
+ /* Set up interrupt trigger */
+ reg = d->virt_base + EINT_REG(index);
+ shift = EINT_OFFS(index);
+
+ val = readl(reg);
+ val &= ~(EINT_MASK << shift);
+ val |= trigger << shift;
+ writel(val, reg);
+
+ s3c24xx_eint_set_function(d, bank, data->hwirq);
+
+ return 0;
+}
+
+/* Handling of EINTs 0-3 on all except S3C2412 and S3C2413 */
+
+static void s3c2410_eint0_3_ack(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data;
+ struct s3c24xx_eint_data *eint_data = ddata->eint_data;
+ int parent_irq = eint_data->parents[data->hwirq];
+ struct irq_chip *parent_chip = irq_get_chip(parent_irq);
+
+ parent_chip->irq_ack(irq_get_irq_data(parent_irq));
+}
+
+static void s3c2410_eint0_3_mask(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data;
+ struct s3c24xx_eint_data *eint_data = ddata->eint_data;
+ int parent_irq = eint_data->parents[data->hwirq];
+ struct irq_chip *parent_chip = irq_get_chip(parent_irq);
+
+ parent_chip->irq_mask(irq_get_irq_data(parent_irq));
+}
+
+static void s3c2410_eint0_3_unmask(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct s3c24xx_eint_domain_data *ddata = bank->irq_domain->host_data;
+ struct s3c24xx_eint_data *eint_data = ddata->eint_data;
+ int parent_irq = eint_data->parents[data->hwirq];
+ struct irq_chip *parent_chip = irq_get_chip(parent_irq);
+
+ parent_chip->irq_unmask(irq_get_irq_data(parent_irq));
+}
+
+static struct irq_chip s3c2410_eint0_3_chip = {
+ .name = "s3c2410-eint0_3",
+ .irq_ack = s3c2410_eint0_3_ack,
+ .irq_mask = s3c2410_eint0_3_mask,
+ .irq_unmask = s3c2410_eint0_3_unmask,
+ .irq_set_type = s3c24xx_eint_type,
+};
+
+static void s3c2410_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_data *data = irq_desc_get_irq_data(desc);
+ struct s3c24xx_eint_data *eint_data = irq_get_handler_data(irq);
+ unsigned int virq;
+
+ /* the first 4 eints have a simple 1 to 1 mapping */
+ virq = irq_linear_revmap(eint_data->domains[data->hwirq], data->hwirq);
+ /* Something must be really wrong if an unmapped EINT is unmasked */
+ BUG_ON(!virq);
+
+ generic_handle_irq(virq);
+}
+
+/* Handling of EINTs 0-3 on S3C2412 and S3C2413 */
+
+static void s3c2412_eint0_3_ack(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+
+ unsigned long bitval = 1UL << data->hwirq;
+ writel(bitval, d->virt_base + EINTPEND_REG);
+}
+
+static void s3c2412_eint0_3_mask(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned long mask;
+
+ mask = readl(d->virt_base + EINTMASK_REG);
+ mask |= (1UL << data->hwirq);
+ writel(mask, d->virt_base + EINTMASK_REG);
+}
+
+static void s3c2412_eint0_3_unmask(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned long mask;
+
+ mask = readl(d->virt_base + EINTMASK_REG);
+ mask &= ~(1UL << data->hwirq);
+ writel(mask, d->virt_base + EINTMASK_REG);
+}
+
+static struct irq_chip s3c2412_eint0_3_chip = {
+ .name = "s3c2412-eint0_3",
+ .irq_ack = s3c2412_eint0_3_ack,
+ .irq_mask = s3c2412_eint0_3_mask,
+ .irq_unmask = s3c2412_eint0_3_unmask,
+ .irq_set_type = s3c24xx_eint_type,
+};
+
+static void s3c2412_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_get_chip(irq);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
+ struct s3c24xx_eint_data *eint_data = irq_get_handler_data(irq);
+ unsigned int virq;
+
+ chained_irq_enter(chip, desc);
+
+ /* the first 4 eints have a simple 1 to 1 mapping */
+ virq = irq_linear_revmap(eint_data->domains[data->hwirq], data->hwirq);
+ /* Something must be really wrong if an unmapped EINT is unmasked */
+ BUG_ON(!virq);
+
+ generic_handle_irq(virq);
+
+ chained_irq_exit(chip, desc);
+}
+
+/* Handling of all other eints */
+
+static void s3c24xx_eint_ack(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned char index = bank->eint_offset + data->hwirq;
+
+ writel(1UL << index, d->virt_base + EINTPEND_REG);
+}
+
+static void s3c24xx_eint_mask(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned char index = bank->eint_offset + data->hwirq;
+ unsigned long mask;
+
+ mask = readl(d->virt_base + EINTMASK_REG);
+ mask |= (1UL << index);
+ writel(mask, d->virt_base + EINTMASK_REG);
+}
+
+static void s3c24xx_eint_unmask(struct irq_data *data)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(data);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned char index = bank->eint_offset + data->hwirq;
+ unsigned long mask;
+
+ mask = readl(d->virt_base + EINTMASK_REG);
+ mask &= ~(1UL << index);
+ writel(mask, d->virt_base + EINTMASK_REG);
+}
+
+static struct irq_chip s3c24xx_eint_chip = {
+ .name = "s3c-eint",
+ .irq_ack = s3c24xx_eint_ack,
+ .irq_mask = s3c24xx_eint_mask,
+ .irq_unmask = s3c24xx_eint_unmask,
+ .irq_set_type = s3c24xx_eint_type,
+};
+
+static inline void s3c24xx_demux_eint(unsigned int irq, struct irq_desc *desc,
+ u32 offset, u32 range)
+{
+ struct irq_chip *chip = irq_get_chip(irq);
+ struct s3c24xx_eint_data *data = irq_get_handler_data(irq);
+ struct samsung_pinctrl_drv_data *d = data->drvdata;
+ unsigned int pend, mask;
+
+ chained_irq_enter(chip, desc);
+
+ pend = readl(d->virt_base + EINTPEND_REG);
+ mask = readl(d->virt_base + EINTMASK_REG);
+
+ pend &= ~mask;
+ pend &= range;
+
+ while (pend) {
+ unsigned int virq;
+
+ irq = __ffs(pend);
+ pend &= ~(1 << irq);
+ virq = irq_linear_revmap(data->domains[irq], irq - offset);
+ /* Something is really wrong if an unmapped EINT is unmasked */
+ BUG_ON(!virq);
+
+ generic_handle_irq(virq);
+ }
+
+ chained_irq_exit(chip, desc);
+}
+
+static void s3c24xx_demux_eint4_7(unsigned int irq, struct irq_desc *desc)
+{
+ s3c24xx_demux_eint(irq, desc, 0, 0xf0);
+}
+
+static void s3c24xx_demux_eint8_23(unsigned int irq, struct irq_desc *desc)
+{
+ s3c24xx_demux_eint(irq, desc, 8, 0xffff00);
+}
+
+static irq_flow_handler_t s3c2410_eint_handlers[NUM_EINT_IRQ] = {
+ s3c2410_demux_eint0_3,
+ s3c2410_demux_eint0_3,
+ s3c2410_demux_eint0_3,
+ s3c2410_demux_eint0_3,
+ s3c24xx_demux_eint4_7,
+ s3c24xx_demux_eint8_23,
+};
+
+static irq_flow_handler_t s3c2412_eint_handlers[NUM_EINT_IRQ] = {
+ s3c2412_demux_eint0_3,
+ s3c2412_demux_eint0_3,
+ s3c2412_demux_eint0_3,
+ s3c2412_demux_eint0_3,
+ s3c24xx_demux_eint4_7,
+ s3c24xx_demux_eint8_23,
+};
+
+static int s3c24xx_gpf_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct s3c24xx_eint_domain_data *ddata = h->host_data;
+ struct samsung_pin_bank *bank = ddata->bank;
+
+ if (!(bank->eint_mask & (1 << (bank->eint_offset + hw))))
+ return -EINVAL;
+
+ if (hw <= 3) {
+ if (ddata->eint0_3_parent_only)
+ irq_set_chip_and_handler(virq, &s3c2410_eint0_3_chip,
+ handle_edge_irq);
+ else
+ irq_set_chip_and_handler(virq, &s3c2412_eint0_3_chip,
+ handle_edge_irq);
+ } else {
+ irq_set_chip_and_handler(virq, &s3c24xx_eint_chip,
+ handle_edge_irq);
+ }
+ irq_set_chip_data(virq, bank);
+ set_irq_flags(virq, IRQF_VALID);
+ return 0;
+}
+
+static const struct irq_domain_ops s3c24xx_gpf_irq_ops = {
+ .map = s3c24xx_gpf_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static int s3c24xx_gpg_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct s3c24xx_eint_domain_data *ddata = h->host_data;
+ struct samsung_pin_bank *bank = ddata->bank;
+
+ if (!(bank->eint_mask & (1 << (bank->eint_offset + hw))))
+ return -EINVAL;
+
+ irq_set_chip_and_handler(virq, &s3c24xx_eint_chip, handle_edge_irq);
+ irq_set_chip_data(virq, bank);
+ set_irq_flags(virq, IRQF_VALID);
+ return 0;
+}
+
+static const struct irq_domain_ops s3c24xx_gpg_irq_ops = {
+ .map = s3c24xx_gpg_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static const struct of_device_id s3c24xx_eint_irq_ids[] = {
+ { .compatible = "samsung,s3c2410-wakeup-eint", .data = (void *)1 },
+ { .compatible = "samsung,s3c2412-wakeup-eint", .data = (void *)0 },
+ { }
+};
+
+static int s3c24xx_eint_init(struct samsung_pinctrl_drv_data *d)
+{
+ struct device *dev = d->dev;
+ const struct of_device_id *match;
+ struct device_node *eint_np = NULL;
+ struct device_node *np;
+ struct samsung_pin_bank *bank;
+ struct s3c24xx_eint_data *eint_data;
+ const struct irq_domain_ops *ops;
+ unsigned int i;
+ bool eint0_3_parent_only;
+ irq_flow_handler_t *handlers;
+
+ for_each_child_of_node(dev->of_node, np) {
+ match = of_match_node(s3c24xx_eint_irq_ids, np);
+ if (match) {
+ eint_np = np;
+ eint0_3_parent_only = (bool)match->data;
+ break;
+ }
+ }
+ if (!eint_np)
+ return -ENODEV;
+
+ eint_data = devm_kzalloc(dev, sizeof(*eint_data), GFP_KERNEL);
+ if (!eint_data)
+ return -ENOMEM;
+
+ eint_data->drvdata = d;
+
+ handlers = eint0_3_parent_only ? s3c2410_eint_handlers
+ : s3c2412_eint_handlers;
+ for (i = 0; i < NUM_EINT_IRQ; ++i) {
+ unsigned int irq;
+
+ irq = irq_of_parse_and_map(eint_np, i);
+ if (!irq) {
+ dev_err(dev, "failed to get wakeup EINT IRQ %d\n", i);
+ return -ENXIO;
+ }
+
+ eint_data->parents[i] = irq;
+ irq_set_chained_handler(irq, handlers[i]);
+ irq_set_handler_data(irq, eint_data);
+ }
+
+ bank = d->ctrl->pin_banks;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ struct s3c24xx_eint_domain_data *ddata;
+ unsigned int mask;
+ unsigned int irq;
+ unsigned int pin;
+
+ if (bank->eint_type != EINT_TYPE_WKUP)
+ continue;
+
+ ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);
+ if (!ddata)
+ return -ENOMEM;
+
+ ddata->bank = bank;
+ ddata->eint_data = eint_data;
+ ddata->eint0_3_parent_only = eint0_3_parent_only;
+
+ ops = (bank->eint_offset == 0) ? &s3c24xx_gpf_irq_ops
+ : &s3c24xx_gpg_irq_ops;
+
+ bank->irq_domain = irq_domain_add_linear(bank->of_node,
+ bank->nr_pins, ops, ddata);
+ if (!bank->irq_domain) {
+ dev_err(dev, "wkup irq domain add failed\n");
+ return -ENXIO;
+ }
+
+ irq = bank->eint_offset;
+ mask = bank->eint_mask;
+ for (pin = 0; mask; ++pin, mask >>= 1) {
+ if (irq >= NUM_EINT)
+ break;
+ if (!(mask & 1))
+ continue;
+ eint_data->domains[irq] = bank->irq_domain;
+ ++irq;
+ }
+ }
+
+ return 0;
+}
+
+static struct samsung_pin_bank s3c2412_pin_banks[] = {
+ PIN_BANK_A(23, 0x000, "gpa"),
+ PIN_BANK_2BIT(11, 0x010, "gpb"),
+ PIN_BANK_2BIT(16, 0x020, "gpc"),
+ PIN_BANK_2BIT(16, 0x030, "gpd"),
+ PIN_BANK_2BIT(16, 0x040, "gpe"),
+ PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
+ PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00),
+ PIN_BANK_2BIT(11, 0x070, "gph"),
+ PIN_BANK_2BIT(13, 0x080, "gpj"),
+};
+
+struct samsung_pin_ctrl s3c2412_pin_ctrl[] = {
+ {
+ .pin_banks = s3c2412_pin_banks,
+ .nr_banks = ARRAY_SIZE(s3c2412_pin_banks),
+ .eint_wkup_init = s3c24xx_eint_init,
+ .label = "S3C2412-GPIO",
+ },
+};
+
+static struct samsung_pin_bank s3c2416_pin_banks[] = {
+ PIN_BANK_A(27, 0x000, "gpa"),
+ PIN_BANK_2BIT(11, 0x010, "gpb"),
+ PIN_BANK_2BIT(16, 0x020, "gpc"),
+ PIN_BANK_2BIT(16, 0x030, "gpd"),
+ PIN_BANK_2BIT(16, 0x040, "gpe"),
+ PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
+ PIN_BANK_2BIT_EINTW(8, 0x060, "gpg", 8, 0xff00),
+ PIN_BANK_2BIT(15, 0x070, "gph"),
+ PIN_BANK_2BIT(16, 0x0e0, "gpk"),
+ PIN_BANK_2BIT(14, 0x0f0, "gpl"),
+ PIN_BANK_2BIT(2, 0x100, "gpm"),
+};
+
+struct samsung_pin_ctrl s3c2416_pin_ctrl[] = {
+ {
+ .pin_banks = s3c2416_pin_banks,
+ .nr_banks = ARRAY_SIZE(s3c2416_pin_banks),
+ .eint_wkup_init = s3c24xx_eint_init,
+ .label = "S3C2416-GPIO",
+ },
+};
+
+static struct samsung_pin_bank s3c2440_pin_banks[] = {
+ PIN_BANK_A(25, 0x000, "gpa"),
+ PIN_BANK_2BIT(11, 0x010, "gpb"),
+ PIN_BANK_2BIT(16, 0x020, "gpc"),
+ PIN_BANK_2BIT(16, 0x030, "gpd"),
+ PIN_BANK_2BIT(16, 0x040, "gpe"),
+ PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
+ PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00),
+ PIN_BANK_2BIT(11, 0x070, "gph"),
+ PIN_BANK_2BIT(13, 0x0d0, "gpj"),
+};
+
+struct samsung_pin_ctrl s3c2440_pin_ctrl[] = {
+ {
+ .pin_banks = s3c2440_pin_banks,
+ .nr_banks = ARRAY_SIZE(s3c2440_pin_banks),
+ .eint_wkup_init = s3c24xx_eint_init,
+ .label = "S3C2440-GPIO",
+ },
+};
+
+static struct samsung_pin_bank s3c2450_pin_banks[] = {
+ PIN_BANK_A(28, 0x000, "gpa"),
+ PIN_BANK_2BIT(11, 0x010, "gpb"),
+ PIN_BANK_2BIT(16, 0x020, "gpc"),
+ PIN_BANK_2BIT(16, 0x030, "gpd"),
+ PIN_BANK_2BIT(16, 0x040, "gpe"),
+ PIN_BANK_2BIT_EINTW(8, 0x050, "gpf", 0, 0xff),
+ PIN_BANK_2BIT_EINTW(16, 0x060, "gpg", 8, 0xffff00),
+ PIN_BANK_2BIT(15, 0x070, "gph"),
+ PIN_BANK_2BIT(16, 0x0d0, "gpj"),
+ PIN_BANK_2BIT(16, 0x0e0, "gpk"),
+ PIN_BANK_2BIT(15, 0x0f0, "gpl"),
+ PIN_BANK_2BIT(2, 0x100, "gpm"),
+};
+
+struct samsung_pin_ctrl s3c2450_pin_ctrl[] = {
+ {
+ .pin_banks = s3c2450_pin_banks,
+ .nr_banks = ARRAY_SIZE(s3c2450_pin_banks),
+ .eint_wkup_init = s3c24xx_eint_init,
+ .label = "S3C2450-GPIO",
+ },
+};
--- /dev/null
+/*
+ * S3C64xx specific support for pinctrl-samsung driver.
+ *
+ * Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
+ *
+ * Based on pinctrl-exynos.c, please see the file for original copyrights.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This file contains the Samsung S3C64xx specific information required by the
+ * the Samsung pinctrl/gpiolib driver. It also includes the implementation of
+ * external gpio and wakeup interrupt support.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/of_irq.h>
+#include <linux/io.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+
+#include "pinctrl-samsung.h"
+
+#define NUM_EINT0 28
+#define NUM_EINT0_IRQ 4
+#define EINT_MAX_PER_REG 16
+#define EINT_MAX_PER_GROUP 16
+
+/* External GPIO and wakeup interrupt related definitions */
+#define SVC_GROUP_SHIFT 4
+#define SVC_GROUP_MASK 0xf
+#define SVC_NUM_MASK 0xf
+#define SVC_GROUP(x) ((x >> SVC_GROUP_SHIFT) & \
+ SVC_GROUP_MASK)
+
+#define EINT12CON_REG 0x200
+#define EINT12MASK_REG 0x240
+#define EINT12PEND_REG 0x260
+
+#define EINT_OFFS(i) ((i) % (2 * EINT_MAX_PER_GROUP))
+#define EINT_GROUP(i) ((i) / EINT_MAX_PER_GROUP)
+#define EINT_REG(g) (4 * ((g) / 2))
+
+#define EINTCON_REG(i) (EINT12CON_REG + EINT_REG(EINT_GROUP(i)))
+#define EINTMASK_REG(i) (EINT12MASK_REG + EINT_REG(EINT_GROUP(i)))
+#define EINTPEND_REG(i) (EINT12PEND_REG + EINT_REG(EINT_GROUP(i)))
+
+#define SERVICE_REG 0x284
+#define SERVICEPEND_REG 0x288
+
+#define EINT0CON0_REG 0x900
+#define EINT0MASK_REG 0x920
+#define EINT0PEND_REG 0x924
+
+/* S3C64xx specific external interrupt trigger types */
+#define EINT_LEVEL_LOW 0
+#define EINT_LEVEL_HIGH 1
+#define EINT_EDGE_FALLING 2
+#define EINT_EDGE_RISING 4
+#define EINT_EDGE_BOTH 6
+#define EINT_CON_MASK 0xF
+#define EINT_CON_LEN 4
+
+static struct samsung_pin_bank_type bank_type_4bit_off = {
+ .fld_width = { 4, 1, 2, 0, 2, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, 0, 0x0c, 0x10, },
+};
+
+static struct samsung_pin_bank_type bank_type_4bit_alive = {
+ .fld_width = { 4, 1, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, },
+};
+
+static struct samsung_pin_bank_type bank_type_4bit2_off = {
+ .fld_width = { 4, 1, 2, 0, 2, 2, },
+ .reg_offset = { 0x00, 0x08, 0x0c, 0, 0x10, 0x14, },
+};
+
+static struct samsung_pin_bank_type bank_type_4bit2_alive = {
+ .fld_width = { 4, 1, 2, },
+ .reg_offset = { 0x00, 0x08, 0x0c, },
+};
+
+static struct samsung_pin_bank_type bank_type_2bit_off = {
+ .fld_width = { 2, 1, 2, 0, 2, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, 0, 0x0c, 0x10, },
+};
+
+static struct samsung_pin_bank_type bank_type_2bit_alive = {
+ .fld_width = { 2, 1, 2, },
+ .reg_offset = { 0x00, 0x04, 0x08, },
+};
+
+#define PIN_BANK_4BIT(pins, reg, id) \
+ { \
+ .type = &bank_type_4bit_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_NONE, \
+ .name = id \
+ }
+
+#define PIN_BANK_4BIT_EINTG(pins, reg, id, eoffs) \
+ { \
+ .type = &bank_type_4bit_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_GPIO, \
+ .eint_func = 7, \
+ .eint_mask = (1 << (pins)) - 1, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+#define PIN_BANK_4BIT_EINTW(pins, reg, id, eoffs, emask) \
+ { \
+ .type = &bank_type_4bit_alive,\
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_WKUP, \
+ .eint_func = 3, \
+ .eint_mask = emask, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+#define PIN_BANK_4BIT2_EINTG(pins, reg, id, eoffs) \
+ { \
+ .type = &bank_type_4bit2_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_GPIO, \
+ .eint_func = 7, \
+ .eint_mask = (1 << (pins)) - 1, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+#define PIN_BANK_4BIT2_EINTW(pins, reg, id, eoffs, emask) \
+ { \
+ .type = &bank_type_4bit2_alive,\
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_WKUP, \
+ .eint_func = 3, \
+ .eint_mask = emask, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+#define PIN_BANK_4BIT2_ALIVE(pins, reg, id) \
+ { \
+ .type = &bank_type_4bit2_alive,\
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_NONE, \
+ .name = id \
+ }
+
+#define PIN_BANK_2BIT(pins, reg, id) \
+ { \
+ .type = &bank_type_2bit_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_NONE, \
+ .name = id \
+ }
+
+#define PIN_BANK_2BIT_EINTG(pins, reg, id, eoffs, emask) \
+ { \
+ .type = &bank_type_2bit_off, \
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_GPIO, \
+ .eint_func = 3, \
+ .eint_mask = emask, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+#define PIN_BANK_2BIT_EINTW(pins, reg, id, eoffs) \
+ { \
+ .type = &bank_type_2bit_alive,\
+ .pctl_offset = reg, \
+ .nr_pins = pins, \
+ .eint_type = EINT_TYPE_WKUP, \
+ .eint_func = 2, \
+ .eint_mask = (1 << (pins)) - 1, \
+ .eint_offset = eoffs, \
+ .name = id \
+ }
+
+/**
+ * struct s3c64xx_eint0_data: EINT0 common data
+ * @drvdata: pin controller driver data
+ * @domains: IRQ domains of particular EINT0 interrupts
+ * @pins: pin offsets inside of banks of particular EINT0 interrupts
+ */
+struct s3c64xx_eint0_data {
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct irq_domain *domains[NUM_EINT0];
+ u8 pins[NUM_EINT0];
+};
+
+/**
+ * struct s3c64xx_eint0_domain_data: EINT0 per-domain data
+ * @bank: pin bank related to the domain
+ * @eints: EINT0 interrupts related to the domain
+ */
+struct s3c64xx_eint0_domain_data {
+ struct samsung_pin_bank *bank;
+ u8 eints[];
+};
+
+/**
+ * struct s3c64xx_eint_gpio_data: GPIO EINT data
+ * @drvdata: pin controller driver data
+ * @domains: array of domains related to EINT interrupt groups
+ */
+struct s3c64xx_eint_gpio_data {
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct irq_domain *domains[];
+};
+
+/*
+ * Common functions for S3C64xx EINT configuration
+ */
+
+static int s3c64xx_irq_get_trigger(unsigned int type)
+{
+ int trigger;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ trigger = EINT_EDGE_RISING;
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ trigger = EINT_EDGE_FALLING;
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ trigger = EINT_EDGE_BOTH;
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ trigger = EINT_LEVEL_HIGH;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ trigger = EINT_LEVEL_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return trigger;
+}
+
+static void s3c64xx_irq_set_handler(unsigned int irq, unsigned int type)
+{
+ /* Edge- and level-triggered interrupts need different handlers */
+ if (type & IRQ_TYPE_EDGE_BOTH)
+ __irq_set_handler_locked(irq, handle_edge_irq);
+ else
+ __irq_set_handler_locked(irq, handle_level_irq);
+}
+
+static void s3c64xx_irq_set_function(struct samsung_pinctrl_drv_data *d,
+ struct samsung_pin_bank *bank, int pin)
+{
+ struct samsung_pin_bank_type *bank_type = bank->type;
+ unsigned long flags;
+ void __iomem *reg;
+ u8 shift;
+ u32 mask;
+ u32 val;
+
+ /* Make sure that pin is configured as interrupt */
+ reg = d->virt_base + bank->pctl_offset;
+ shift = pin;
+ if (bank_type->fld_width[PINCFG_TYPE_FUNC] * shift >= 32) {
+ /* 4-bit bank type with 2 con regs */
+ reg += 4;
+ shift -= 8;
+ }
+
+ shift = shift * bank_type->fld_width[PINCFG_TYPE_FUNC];
+ mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1;
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ val = readl(reg);
+ val &= ~(mask << shift);
+ val |= bank->eint_func << shift;
+ writel(val, reg);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+}
+
+/*
+ * Functions for EINT GPIO configuration (EINT groups 1-9)
+ */
+
+static inline void s3c64xx_gpio_irq_set_mask(struct irq_data *irqd, bool mask)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned char index = EINT_OFFS(bank->eint_offset) + irqd->hwirq;
+ void __iomem *reg = d->virt_base + EINTMASK_REG(bank->eint_offset);
+ u32 val;
+
+ val = readl(reg);
+ if (mask)
+ val |= 1 << index;
+ else
+ val &= ~(1 << index);
+ writel(val, reg);
+}
+
+static void s3c64xx_gpio_irq_unmask(struct irq_data *irqd)
+{
+ s3c64xx_gpio_irq_set_mask(irqd, false);
+}
+
+static void s3c64xx_gpio_irq_mask(struct irq_data *irqd)
+{
+ s3c64xx_gpio_irq_set_mask(irqd, true);
+}
+
+static void s3c64xx_gpio_irq_ack(struct irq_data *irqd)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ unsigned char index = EINT_OFFS(bank->eint_offset) + irqd->hwirq;
+ void __iomem *reg = d->virt_base + EINTPEND_REG(bank->eint_offset);
+
+ writel(1 << index, reg);
+}
+
+static int s3c64xx_gpio_irq_set_type(struct irq_data *irqd, unsigned int type)
+{
+ struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ void __iomem *reg;
+ int trigger;
+ u8 shift;
+ u32 val;
+
+ trigger = s3c64xx_irq_get_trigger(type);
+ if (trigger < 0) {
+ pr_err("unsupported external interrupt type\n");
+ return -EINVAL;
+ }
+
+ s3c64xx_irq_set_handler(irqd->irq, type);
+
+ /* Set up interrupt trigger */
+ reg = d->virt_base + EINTCON_REG(bank->eint_offset);
+ shift = EINT_OFFS(bank->eint_offset) + irqd->hwirq;
+ shift = 4 * (shift / 4); /* 4 EINTs per trigger selector */
+
+ val = readl(reg);
+ val &= ~(EINT_CON_MASK << shift);
+ val |= trigger << shift;
+ writel(val, reg);
+
+ s3c64xx_irq_set_function(d, bank, irqd->hwirq);
+
+ return 0;
+}
+
+/*
+ * irq_chip for gpio interrupts.
+ */
+static struct irq_chip s3c64xx_gpio_irq_chip = {
+ .name = "GPIO",
+ .irq_unmask = s3c64xx_gpio_irq_unmask,
+ .irq_mask = s3c64xx_gpio_irq_mask,
+ .irq_ack = s3c64xx_gpio_irq_ack,
+ .irq_set_type = s3c64xx_gpio_irq_set_type,
+};
+
+static int s3c64xx_gpio_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct samsung_pin_bank *bank = h->host_data;
+
+ if (!(bank->eint_mask & (1 << hw)))
+ return -EINVAL;
+
+ irq_set_chip_and_handler(virq,
+ &s3c64xx_gpio_irq_chip, handle_level_irq);
+ irq_set_chip_data(virq, bank);
+ set_irq_flags(virq, IRQF_VALID);
+
+ return 0;
+}
+
+/*
+ * irq domain callbacks for external gpio interrupt controller.
+ */
+static const struct irq_domain_ops s3c64xx_gpio_irqd_ops = {
+ .map = s3c64xx_gpio_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static void s3c64xx_eint_gpio_irq(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_get_chip(irq);
+ struct s3c64xx_eint_gpio_data *data = irq_get_handler_data(irq);
+ struct samsung_pinctrl_drv_data *drvdata = data->drvdata;
+
+ chained_irq_enter(chip, desc);
+
+ do {
+ unsigned int svc;
+ unsigned int group;
+ unsigned int pin;
+ unsigned int virq;
+
+ svc = readl(drvdata->virt_base + SERVICE_REG);
+ group = SVC_GROUP(svc);
+ pin = svc & SVC_NUM_MASK;
+
+ if (!group)
+ break;
+
+ /* Group 1 is used for two pin banks */
+ if (group == 1) {
+ if (pin < 8)
+ group = 0;
+ else
+ pin -= 8;
+ }
+
+ virq = irq_linear_revmap(data->domains[group], pin);
+ /*
+ * Something must be really wrong if an unmapped EINT
+ * was unmasked...
+ */
+ BUG_ON(!virq);
+
+ generic_handle_irq(virq);
+ } while (1);
+
+ chained_irq_exit(chip, desc);
+}
+
+/**
+ * s3c64xx_eint_gpio_init() - setup handling of external gpio interrupts.
+ * @d: driver data of samsung pinctrl driver.
+ */
+static int s3c64xx_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
+{
+ struct s3c64xx_eint_gpio_data *data;
+ struct samsung_pin_bank *bank;
+ struct device *dev = d->dev;
+ unsigned int nr_domains;
+ unsigned int i;
+
+ if (!d->irq) {
+ dev_err(dev, "irq number not available\n");
+ return -EINVAL;
+ }
+
+ nr_domains = 0;
+ bank = d->ctrl->pin_banks;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ unsigned int nr_eints;
+ unsigned int mask;
+
+ if (bank->eint_type != EINT_TYPE_GPIO)
+ continue;
+
+ mask = bank->eint_mask;
+ nr_eints = fls(mask);
+
+ bank->irq_domain = irq_domain_add_linear(bank->of_node,
+ nr_eints, &s3c64xx_gpio_irqd_ops, bank);
+ if (!bank->irq_domain) {
+ dev_err(dev, "gpio irq domain add failed\n");
+ return -ENXIO;
+ }
+
+ ++nr_domains;
+ }
+
+ data = devm_kzalloc(dev, sizeof(*data)
+ + nr_domains * sizeof(*data->domains), GFP_KERNEL);
+ if (!data) {
+ dev_err(dev, "failed to allocate handler data\n");
+ return -ENOMEM;
+ }
+ data->drvdata = d;
+
+ bank = d->ctrl->pin_banks;
+ nr_domains = 0;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ if (bank->eint_type != EINT_TYPE_GPIO)
+ continue;
+
+ data->domains[nr_domains++] = bank->irq_domain;
+ }
+
+ irq_set_chained_handler(d->irq, s3c64xx_eint_gpio_irq);
+ irq_set_handler_data(d->irq, data);
+
+ return 0;
+}
+
+/*
+ * Functions for configuration of EINT0 wake-up interrupts
+ */
+
+static inline void s3c64xx_eint0_irq_set_mask(struct irq_data *irqd, bool mask)
+{
+ struct s3c64xx_eint0_domain_data *ddata =
+ irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = ddata->bank->drvdata;
+ u32 val;
+
+ val = readl(d->virt_base + EINT0MASK_REG);
+ if (mask)
+ val |= 1 << ddata->eints[irqd->hwirq];
+ else
+ val &= ~(1 << ddata->eints[irqd->hwirq]);
+ writel(val, d->virt_base + EINT0MASK_REG);
+}
+
+static void s3c64xx_eint0_irq_unmask(struct irq_data *irqd)
+{
+ s3c64xx_eint0_irq_set_mask(irqd, false);
+}
+
+static void s3c64xx_eint0_irq_mask(struct irq_data *irqd)
+{
+ s3c64xx_eint0_irq_set_mask(irqd, true);
+}
+
+static void s3c64xx_eint0_irq_ack(struct irq_data *irqd)
+{
+ struct s3c64xx_eint0_domain_data *ddata =
+ irq_data_get_irq_chip_data(irqd);
+ struct samsung_pinctrl_drv_data *d = ddata->bank->drvdata;
+
+ writel(1 << ddata->eints[irqd->hwirq],
+ d->virt_base + EINT0PEND_REG);
+}
+
+static int s3c64xx_eint0_irq_set_type(struct irq_data *irqd, unsigned int type)
+{
+ struct s3c64xx_eint0_domain_data *ddata =
+ irq_data_get_irq_chip_data(irqd);
+ struct samsung_pin_bank *bank = ddata->bank;
+ struct samsung_pinctrl_drv_data *d = bank->drvdata;
+ void __iomem *reg;
+ int trigger;
+ u8 shift;
+ u32 val;
+
+ trigger = s3c64xx_irq_get_trigger(type);
+ if (trigger < 0) {
+ pr_err("unsupported external interrupt type\n");
+ return -EINVAL;
+ }
+
+ s3c64xx_irq_set_handler(irqd->irq, type);
+
+ /* Set up interrupt trigger */
+ reg = d->virt_base + EINT0CON0_REG;
+ shift = ddata->eints[irqd->hwirq];
+ if (shift >= EINT_MAX_PER_REG) {
+ reg += 4;
+ shift -= EINT_MAX_PER_REG;
+ }
+ shift = EINT_CON_LEN * (shift / 2);
+
+ val = readl(reg);
+ val &= ~(EINT_CON_MASK << shift);
+ val |= trigger << shift;
+ writel(val, reg);
+
+ s3c64xx_irq_set_function(d, bank, irqd->hwirq);
+
+ return 0;
+}
+
+/*
+ * irq_chip for wakeup interrupts
+ */
+static struct irq_chip s3c64xx_eint0_irq_chip = {
+ .name = "EINT0",
+ .irq_unmask = s3c64xx_eint0_irq_unmask,
+ .irq_mask = s3c64xx_eint0_irq_mask,
+ .irq_ack = s3c64xx_eint0_irq_ack,
+ .irq_set_type = s3c64xx_eint0_irq_set_type,
+};
+
+static inline void s3c64xx_irq_demux_eint(unsigned int irq,
+ struct irq_desc *desc, u32 range)
+{
+ struct irq_chip *chip = irq_get_chip(irq);
+ struct s3c64xx_eint0_data *data = irq_get_handler_data(irq);
+ struct samsung_pinctrl_drv_data *drvdata = data->drvdata;
+ unsigned int pend, mask;
+
+ chained_irq_enter(chip, desc);
+
+ pend = readl(drvdata->virt_base + EINT0PEND_REG);
+ mask = readl(drvdata->virt_base + EINT0MASK_REG);
+
+ pend = pend & range & ~mask;
+ pend &= range;
+
+ while (pend) {
+ unsigned int virq;
+
+ irq = fls(pend) - 1;
+ pend &= ~(1 << irq);
+
+ virq = irq_linear_revmap(data->domains[irq], data->pins[irq]);
+ /*
+ * Something must be really wrong if an unmapped EINT
+ * was unmasked...
+ */
+ BUG_ON(!virq);
+
+ generic_handle_irq(virq);
+ }
+
+ chained_irq_exit(chip, desc);
+}
+
+static void s3c64xx_demux_eint0_3(unsigned int irq, struct irq_desc *desc)
+{
+ s3c64xx_irq_demux_eint(irq, desc, 0xf);
+}
+
+static void s3c64xx_demux_eint4_11(unsigned int irq, struct irq_desc *desc)
+{
+ s3c64xx_irq_demux_eint(irq, desc, 0xff0);
+}
+
+static void s3c64xx_demux_eint12_19(unsigned int irq, struct irq_desc *desc)
+{
+ s3c64xx_irq_demux_eint(irq, desc, 0xff000);
+}
+
+static void s3c64xx_demux_eint20_27(unsigned int irq, struct irq_desc *desc)
+{
+ s3c64xx_irq_demux_eint(irq, desc, 0xff00000);
+}
+
+static irq_flow_handler_t s3c64xx_eint0_handlers[NUM_EINT0_IRQ] = {
+ s3c64xx_demux_eint0_3,
+ s3c64xx_demux_eint4_11,
+ s3c64xx_demux_eint12_19,
+ s3c64xx_demux_eint20_27,
+};
+
+static int s3c64xx_eint0_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ struct s3c64xx_eint0_domain_data *ddata = h->host_data;
+ struct samsung_pin_bank *bank = ddata->bank;
+
+ if (!(bank->eint_mask & (1 << hw)))
+ return -EINVAL;
+
+ irq_set_chip_and_handler(virq,
+ &s3c64xx_eint0_irq_chip, handle_level_irq);
+ irq_set_chip_data(virq, ddata);
+ set_irq_flags(virq, IRQF_VALID);
+
+ return 0;
+}
+
+/*
+ * irq domain callbacks for external wakeup interrupt controller.
+ */
+static const struct irq_domain_ops s3c64xx_eint0_irqd_ops = {
+ .map = s3c64xx_eint0_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+/* list of external wakeup controllers supported */
+static const struct of_device_id s3c64xx_eint0_irq_ids[] = {
+ { .compatible = "samsung,s3c64xx-wakeup-eint", },
+ { }
+};
+
+/**
+ * s3c64xx_eint_eint0_init() - setup handling of external wakeup interrupts.
+ * @d: driver data of samsung pinctrl driver.
+ */
+static int s3c64xx_eint_eint0_init(struct samsung_pinctrl_drv_data *d)
+{
+ struct device *dev = d->dev;
+ struct device_node *eint0_np = NULL;
+ struct device_node *np;
+ struct samsung_pin_bank *bank;
+ struct s3c64xx_eint0_data *data;
+ unsigned int i;
+
+ for_each_child_of_node(dev->of_node, np) {
+ if (of_match_node(s3c64xx_eint0_irq_ids, np)) {
+ eint0_np = np;
+ break;
+ }
+ }
+ if (!eint0_np)
+ return -ENODEV;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ dev_err(dev, "could not allocate memory for wkup eint data\n");
+ return -ENOMEM;
+ }
+ data->drvdata = d;
+
+ for (i = 0; i < NUM_EINT0_IRQ; ++i) {
+ unsigned int irq;
+
+ irq = irq_of_parse_and_map(eint0_np, i);
+ if (!irq) {
+ dev_err(dev, "failed to get wakeup EINT IRQ %d\n", i);
+ return -ENXIO;
+ }
+
+ irq_set_chained_handler(irq, s3c64xx_eint0_handlers[i]);
+ irq_set_handler_data(irq, data);
+ }
+
+ bank = d->ctrl->pin_banks;
+ for (i = 0; i < d->ctrl->nr_banks; ++i, ++bank) {
+ struct s3c64xx_eint0_domain_data *ddata;
+ unsigned int nr_eints;
+ unsigned int mask;
+ unsigned int irq;
+ unsigned int pin;
+
+ if (bank->eint_type != EINT_TYPE_WKUP)
+ continue;
+
+ mask = bank->eint_mask;
+ nr_eints = fls(mask);
+
+ ddata = devm_kzalloc(dev,
+ sizeof(*ddata) + nr_eints, GFP_KERNEL);
+ if (!ddata) {
+ dev_err(dev, "failed to allocate domain data\n");
+ return -ENOMEM;
+ }
+ ddata->bank = bank;
+
+ bank->irq_domain = irq_domain_add_linear(bank->of_node,
+ nr_eints, &s3c64xx_eint0_irqd_ops, ddata);
+ if (!bank->irq_domain) {
+ dev_err(dev, "wkup irq domain add failed\n");
+ return -ENXIO;
+ }
+
+ irq = bank->eint_offset;
+ mask = bank->eint_mask;
+ for (pin = 0; mask; ++pin, mask >>= 1) {
+ if (!(mask & 1))
+ continue;
+ data->domains[irq] = bank->irq_domain;
+ data->pins[irq] = pin;
+ ddata->eints[pin] = irq;
+ ++irq;
+ }
+ }
+
+ return 0;
+}
+
+/* pin banks of s3c64xx pin-controller 0 */
+static struct samsung_pin_bank s3c64xx_pin_banks0[] = {
+ PIN_BANK_4BIT_EINTG(8, 0x000, "gpa", 0),
+ PIN_BANK_4BIT_EINTG(7, 0x020, "gpb", 8),
+ PIN_BANK_4BIT_EINTG(8, 0x040, "gpc", 16),
+ PIN_BANK_4BIT_EINTG(5, 0x060, "gpd", 32),
+ PIN_BANK_4BIT(5, 0x080, "gpe"),
+ PIN_BANK_2BIT_EINTG(16, 0x0a0, "gpf", 48, 0x3fff),
+ PIN_BANK_4BIT_EINTG(7, 0x0c0, "gpg", 64),
+ PIN_BANK_4BIT2_EINTG(10, 0x0e0, "gph", 80),
+ PIN_BANK_2BIT(16, 0x100, "gpi"),
+ PIN_BANK_2BIT(12, 0x120, "gpj"),
+ PIN_BANK_4BIT2_ALIVE(16, 0x800, "gpk"),
+ PIN_BANK_4BIT2_EINTW(15, 0x810, "gpl", 16, 0x7f00),
+ PIN_BANK_4BIT_EINTW(6, 0x820, "gpm", 23, 0x1f),
+ PIN_BANK_2BIT_EINTW(16, 0x830, "gpn", 0),
+ PIN_BANK_2BIT_EINTG(16, 0x140, "gpo", 96, 0xffff),
+ PIN_BANK_2BIT_EINTG(15, 0x160, "gpp", 112, 0x7fff),
+ PIN_BANK_2BIT_EINTG(9, 0x180, "gpq", 128, 0x1ff),
+};
+
+/*
+ * Samsung pinctrl driver data for S3C64xx SoC. S3C64xx SoC includes
+ * one gpio/pin-mux/pinconfig controller.
+ */
+struct samsung_pin_ctrl s3c64xx_pin_ctrl[] = {
+ {
+ /* pin-controller instance 1 data */
+ .pin_banks = s3c64xx_pin_banks0,
+ .nr_banks = ARRAY_SIZE(s3c64xx_pin_banks0),
+ .eint_gpio_init = s3c64xx_eint_gpio_init,
+ .eint_wkup_init = s3c64xx_eint_eint0_init,
+ .label = "S3C64xx-GPIO",
+ },
+};
--- /dev/null
+/*
+ * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's SoC's.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Copyright (c) 2012 Linaro Ltd
+ * http://www.linaro.org
+ *
+ * Author: Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This driver implements the Samsung pinctrl driver. It supports setting up of
+ * pinmux and pinconf configurations. The gpiolib interface is also included.
+ * External interrupt (gpio and wakeup) support are not included in this driver
+ * but provides extensions to which platform specific implementation of the gpio
+ * and wakeup interrupts can be hooked to.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/irqdomain.h>
+#include <linux/spinlock.h>
+#include <linux/syscore_ops.h>
+
+#include "../core.h"
+#include "pinctrl-samsung.h"
+
+#define GROUP_SUFFIX "-grp"
+#define GSUFFIX_LEN sizeof(GROUP_SUFFIX)
+#define FUNCTION_SUFFIX "-mux"
+#define FSUFFIX_LEN sizeof(FUNCTION_SUFFIX)
+
+/* list of all possible config options supported */
+static struct pin_config {
+ const char *property;
+ enum pincfg_type param;
+} cfg_params[] = {
+ { "samsung,pin-pud", PINCFG_TYPE_PUD },
+ { "samsung,pin-drv", PINCFG_TYPE_DRV },
+ { "samsung,pin-con-pdn", PINCFG_TYPE_CON_PDN },
+ { "samsung,pin-pud-pdn", PINCFG_TYPE_PUD_PDN },
+ { "samsung,pin-val", PINCFG_TYPE_DAT },
+};
+
+/* Global list of devices (struct samsung_pinctrl_drv_data) */
+static LIST_HEAD(drvdata_list);
+
+static unsigned int pin_base;
+
+static inline struct samsung_pin_bank *gc_to_pin_bank(struct gpio_chip *gc)
+{
+ return container_of(gc, struct samsung_pin_bank, gpio_chip);
+}
+
+static int samsung_get_group_count(struct pinctrl_dev *pctldev)
+{
+ struct samsung_pinctrl_drv_data *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+ return pmx->nr_groups;
+}
+
+static const char *samsung_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned group)
+{
+ struct samsung_pinctrl_drv_data *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+ return pmx->pin_groups[group].name;
+}
+
+static int samsung_get_group_pins(struct pinctrl_dev *pctldev,
+ unsigned group,
+ const unsigned **pins,
+ unsigned *num_pins)
+{
+ struct samsung_pinctrl_drv_data *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+ *pins = pmx->pin_groups[group].pins;
+ *num_pins = pmx->pin_groups[group].num_pins;
+
+ return 0;
+}
+
+static int reserve_map(struct device *dev, struct pinctrl_map **map,
+ unsigned *reserved_maps, unsigned *num_maps,
+ unsigned reserve)
+{
+ unsigned old_num = *reserved_maps;
+ unsigned new_num = *num_maps + reserve;
+ struct pinctrl_map *new_map;
+
+ if (old_num >= new_num)
+ return 0;
+
+ new_map = krealloc(*map, sizeof(*new_map) * new_num, GFP_KERNEL);
+ if (!new_map) {
+ dev_err(dev, "krealloc(map) failed\n");
+ return -ENOMEM;
+ }
+
+ memset(new_map + old_num, 0, (new_num - old_num) * sizeof(*new_map));
+
+ *map = new_map;
+ *reserved_maps = new_num;
+
+ return 0;
+}
+
+static int add_map_mux(struct pinctrl_map **map, unsigned *reserved_maps,
+ unsigned *num_maps, const char *group,
+ const char *function)
+{
+ if (WARN_ON(*num_maps == *reserved_maps))
+ return -ENOSPC;
+
+ (*map)[*num_maps].type = PIN_MAP_TYPE_MUX_GROUP;
+ (*map)[*num_maps].data.mux.group = group;
+ (*map)[*num_maps].data.mux.function = function;
+ (*num_maps)++;
+
+ return 0;
+}
+
+static int add_map_configs(struct device *dev, struct pinctrl_map **map,
+ unsigned *reserved_maps, unsigned *num_maps,
+ const char *group, unsigned long *configs,
+ unsigned num_configs)
+{
+ unsigned long *dup_configs;
+
+ if (WARN_ON(*num_maps == *reserved_maps))
+ return -ENOSPC;
+
+ dup_configs = kmemdup(configs, num_configs * sizeof(*dup_configs),
+ GFP_KERNEL);
+ if (!dup_configs) {
+ dev_err(dev, "kmemdup(configs) failed\n");
+ return -ENOMEM;
+ }
+
+ (*map)[*num_maps].type = PIN_MAP_TYPE_CONFIGS_GROUP;
+ (*map)[*num_maps].data.configs.group_or_pin = group;
+ (*map)[*num_maps].data.configs.configs = dup_configs;
+ (*map)[*num_maps].data.configs.num_configs = num_configs;
+ (*num_maps)++;
+
+ return 0;
+}
+
+static int add_config(struct device *dev, unsigned long **configs,
+ unsigned *num_configs, unsigned long config)
+{
+ unsigned old_num = *num_configs;
+ unsigned new_num = old_num + 1;
+ unsigned long *new_configs;
+
+ new_configs = krealloc(*configs, sizeof(*new_configs) * new_num,
+ GFP_KERNEL);
+ if (!new_configs) {
+ dev_err(dev, "krealloc(configs) failed\n");
+ return -ENOMEM;
+ }
+
+ new_configs[old_num] = config;
+
+ *configs = new_configs;
+ *num_configs = new_num;
+
+ return 0;
+}
+
+static void samsung_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map,
+ unsigned num_maps)
+{
+ int i;
+
+ for (i = 0; i < num_maps; i++)
+ if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
+ kfree(map[i].data.configs.configs);
+
+ kfree(map);
+}
+
+static int samsung_dt_subnode_to_map(struct samsung_pinctrl_drv_data *drvdata,
+ struct device *dev,
+ struct device_node *np,
+ struct pinctrl_map **map,
+ unsigned *reserved_maps,
+ unsigned *num_maps)
+{
+ int ret, i;
+ u32 val;
+ unsigned long config;
+ unsigned long *configs = NULL;
+ unsigned num_configs = 0;
+ unsigned reserve;
+ struct property *prop;
+ const char *group;
+ bool has_func = false;
+
+ ret = of_property_read_u32(np, "samsung,pin-function", &val);
+ if (!ret)
+ has_func = true;
+
+ for (i = 0; i < ARRAY_SIZE(cfg_params); i++) {
+ ret = of_property_read_u32(np, cfg_params[i].property, &val);
+ if (!ret) {
+ config = PINCFG_PACK(cfg_params[i].param, val);
+ ret = add_config(dev, &configs, &num_configs, config);
+ if (ret < 0)
+ goto exit;
+ /* EINVAL=missing, which is fine since it's optional */
+ } else if (ret != -EINVAL) {
+ dev_err(dev, "could not parse property %s\n",
+ cfg_params[i].property);
+ }
+ }
+
+ reserve = 0;
+ if (has_func)
+ reserve++;
+ if (num_configs)
+ reserve++;
+ ret = of_property_count_strings(np, "samsung,pins");
+ if (ret < 0) {
+ dev_err(dev, "could not parse property samsung,pins\n");
+ goto exit;
+ }
+ reserve *= ret;
+
+ ret = reserve_map(dev, map, reserved_maps, num_maps, reserve);
+ if (ret < 0)
+ goto exit;
+
+ of_property_for_each_string(np, "samsung,pins", prop, group) {
+ if (has_func) {
+ ret = add_map_mux(map, reserved_maps,
+ num_maps, group, np->full_name);
+ if (ret < 0)
+ goto exit;
+ }
+
+ if (num_configs) {
+ ret = add_map_configs(dev, map, reserved_maps,
+ num_maps, group, configs,
+ num_configs);
+ if (ret < 0)
+ goto exit;
+ }
+ }
+
+ ret = 0;
+
+exit:
+ kfree(configs);
+ return ret;
+}
+
+static int samsung_dt_node_to_map(struct pinctrl_dev *pctldev,
+ struct device_node *np_config,
+ struct pinctrl_map **map,
+ unsigned *num_maps)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+ unsigned reserved_maps;
+ struct device_node *np;
+ int ret;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+
+ reserved_maps = 0;
+ *map = NULL;
+ *num_maps = 0;
+
+ if (!of_get_child_count(np_config))
+ return samsung_dt_subnode_to_map(drvdata, pctldev->dev,
+ np_config, map,
+ &reserved_maps,
+ num_maps);
+
+ for_each_child_of_node(np_config, np) {
+ ret = samsung_dt_subnode_to_map(drvdata, pctldev->dev, np, map,
+ &reserved_maps, num_maps);
+ if (ret < 0) {
+ samsung_dt_free_map(pctldev, *map, *num_maps);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+/* list of pinctrl callbacks for the pinctrl core */
+static const struct pinctrl_ops samsung_pctrl_ops = {
+ .get_groups_count = samsung_get_group_count,
+ .get_group_name = samsung_get_group_name,
+ .get_group_pins = samsung_get_group_pins,
+ .dt_node_to_map = samsung_dt_node_to_map,
+ .dt_free_map = samsung_dt_free_map,
+};
+
+/* check if the selector is a valid pin function selector */
+static int samsung_get_functions_count(struct pinctrl_dev *pctldev)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ return drvdata->nr_functions;
+}
+
+/* return the name of the pin function specified */
+static const char *samsung_pinmux_get_fname(struct pinctrl_dev *pctldev,
+ unsigned selector)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ return drvdata->pmx_functions[selector].name;
+}
+
+/* return the groups associated for the specified function selector */
+static int samsung_pinmux_get_groups(struct pinctrl_dev *pctldev,
+ unsigned selector, const char * const **groups,
+ unsigned * const num_groups)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ *groups = drvdata->pmx_functions[selector].groups;
+ *num_groups = drvdata->pmx_functions[selector].num_groups;
+ return 0;
+}
+
+/*
+ * given a pin number that is local to a pin controller, find out the pin bank
+ * and the register base of the pin bank.
+ */
+static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata,
+ unsigned pin, void __iomem **reg, u32 *offset,
+ struct samsung_pin_bank **bank)
+{
+ struct samsung_pin_bank *b;
+
+ b = drvdata->ctrl->pin_banks;
+
+ while ((pin >= b->pin_base) &&
+ ((b->pin_base + b->nr_pins - 1) < pin))
+ b++;
+
+ *reg = drvdata->virt_base + b->pctl_offset;
+ *offset = pin - b->pin_base;
+ if (bank)
+ *bank = b;
+}
+
+/* enable or disable a pinmux function */
+static void samsung_pinmux_setup(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group, bool enable)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct samsung_pin_bank_type *type;
+ struct samsung_pin_bank *bank;
+ void __iomem *reg;
+ u32 mask, shift, data, pin_offset;
+ unsigned long flags;
+ const struct samsung_pmx_func *func;
+ const struct samsung_pin_group *grp;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ func = &drvdata->pmx_functions[selector];
+ grp = &drvdata->pin_groups[group];
+
+ pin_to_reg_bank(drvdata, grp->pins[0] - drvdata->ctrl->base,
+ ®, &pin_offset, &bank);
+ type = bank->type;
+ mask = (1 << type->fld_width[PINCFG_TYPE_FUNC]) - 1;
+ shift = pin_offset * type->fld_width[PINCFG_TYPE_FUNC];
+ if (shift >= 32) {
+ /* Some banks have two config registers */
+ shift -= 32;
+ reg += 4;
+ }
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ data = readl(reg + type->reg_offset[PINCFG_TYPE_FUNC]);
+ data &= ~(mask << shift);
+ if (enable)
+ data |= func->val << shift;
+ writel(data, reg + type->reg_offset[PINCFG_TYPE_FUNC]);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+}
+
+/* enable a specified pinmux by writing to registers */
+static int samsung_pinmux_enable(struct pinctrl_dev *pctldev, unsigned selector,
+ unsigned group)
+{
+ samsung_pinmux_setup(pctldev, selector, group, true);
+ return 0;
+}
+
+/* list of pinmux callbacks for the pinmux vertical in pinctrl core */
+static const struct pinmux_ops samsung_pinmux_ops = {
+ .get_functions_count = samsung_get_functions_count,
+ .get_function_name = samsung_pinmux_get_fname,
+ .get_function_groups = samsung_pinmux_get_groups,
+ .enable = samsung_pinmux_enable,
+};
+
+/* set or get the pin config settings for a specified pin */
+static int samsung_pinconf_rw(struct pinctrl_dev *pctldev, unsigned int pin,
+ unsigned long *config, bool set)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct samsung_pin_bank_type *type;
+ struct samsung_pin_bank *bank;
+ void __iomem *reg_base;
+ enum pincfg_type cfg_type = PINCFG_UNPACK_TYPE(*config);
+ u32 data, width, pin_offset, mask, shift;
+ u32 cfg_value, cfg_reg;
+ unsigned long flags;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ pin_to_reg_bank(drvdata, pin - drvdata->ctrl->base, ®_base,
+ &pin_offset, &bank);
+ type = bank->type;
+
+ if (cfg_type >= PINCFG_TYPE_NUM || !type->fld_width[cfg_type])
+ return -EINVAL;
+
+ width = type->fld_width[cfg_type];
+ cfg_reg = type->reg_offset[cfg_type];
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ mask = (1 << width) - 1;
+ shift = pin_offset * width;
+ data = readl(reg_base + cfg_reg);
+
+ if (set) {
+ cfg_value = PINCFG_UNPACK_VALUE(*config);
+ data &= ~(mask << shift);
+ data |= (cfg_value << shift);
+ writel(data, reg_base + cfg_reg);
+ } else {
+ data >>= shift;
+ data &= mask;
+ *config = PINCFG_PACK(cfg_type, data);
+ }
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+
+ return 0;
+}
+
+/* set the pin config settings for a specified pin */
+static int samsung_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
+ unsigned long *configs, unsigned num_configs)
+{
+ int i, ret;
+
+ for (i = 0; i < num_configs; i++) {
+ ret = samsung_pinconf_rw(pctldev, pin, &configs[i], true);
+ if (ret < 0)
+ return ret;
+ } /* for each config */
+
+ return 0;
+}
+
+/* get the pin config settings for a specified pin */
+static int samsung_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin,
+ unsigned long *config)
+{
+ return samsung_pinconf_rw(pctldev, pin, config, false);
+}
+
+/* set the pin config settings for a specified pin group */
+static int samsung_pinconf_group_set(struct pinctrl_dev *pctldev,
+ unsigned group, unsigned long *configs,
+ unsigned num_configs)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+ const unsigned int *pins;
+ unsigned int cnt;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ pins = drvdata->pin_groups[group].pins;
+
+ for (cnt = 0; cnt < drvdata->pin_groups[group].num_pins; cnt++)
+ samsung_pinconf_set(pctldev, pins[cnt], configs, num_configs);
+
+ return 0;
+}
+
+/* get the pin config settings for a specified pin group */
+static int samsung_pinconf_group_get(struct pinctrl_dev *pctldev,
+ unsigned int group, unsigned long *config)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+ const unsigned int *pins;
+
+ drvdata = pinctrl_dev_get_drvdata(pctldev);
+ pins = drvdata->pin_groups[group].pins;
+ samsung_pinconf_get(pctldev, pins[0], config);
+ return 0;
+}
+
+/* list of pinconfig callbacks for pinconfig vertical in the pinctrl code */
+static const struct pinconf_ops samsung_pinconf_ops = {
+ .pin_config_get = samsung_pinconf_get,
+ .pin_config_set = samsung_pinconf_set,
+ .pin_config_group_get = samsung_pinconf_group_get,
+ .pin_config_group_set = samsung_pinconf_group_set,
+};
+
+/* gpiolib gpio_set callback function */
+static void samsung_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
+{
+ struct samsung_pin_bank *bank = gc_to_pin_bank(gc);
+ struct samsung_pin_bank_type *type = bank->type;
+ unsigned long flags;
+ void __iomem *reg;
+ u32 data;
+
+ reg = bank->drvdata->virt_base + bank->pctl_offset;
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ data = readl(reg + type->reg_offset[PINCFG_TYPE_DAT]);
+ data &= ~(1 << offset);
+ if (value)
+ data |= 1 << offset;
+ writel(data, reg + type->reg_offset[PINCFG_TYPE_DAT]);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+}
+
+/* gpiolib gpio_get callback function */
+static int samsung_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+ void __iomem *reg;
+ u32 data;
+ struct samsung_pin_bank *bank = gc_to_pin_bank(gc);
+ struct samsung_pin_bank_type *type = bank->type;
+
+ reg = bank->drvdata->virt_base + bank->pctl_offset;
+
+ data = readl(reg + type->reg_offset[PINCFG_TYPE_DAT]);
+ data >>= offset;
+ data &= 1;
+ return data;
+}
+
+/*
+ * The calls to gpio_direction_output() and gpio_direction_input()
+ * leads to this function call.
+ */
+static int samsung_gpio_set_direction(struct gpio_chip *gc,
+ unsigned offset, bool input)
+{
+ struct samsung_pin_bank_type *type;
+ struct samsung_pin_bank *bank;
+ struct samsung_pinctrl_drv_data *drvdata;
+ void __iomem *reg;
+ u32 data, mask, shift;
+ unsigned long flags;
+
+ bank = gc_to_pin_bank(gc);
+ type = bank->type;
+ drvdata = bank->drvdata;
+
+ reg = drvdata->virt_base + bank->pctl_offset +
+ type->reg_offset[PINCFG_TYPE_FUNC];
+
+ mask = (1 << type->fld_width[PINCFG_TYPE_FUNC]) - 1;
+ shift = offset * type->fld_width[PINCFG_TYPE_FUNC];
+ if (shift >= 32) {
+ /* Some banks have two config registers */
+ shift -= 32;
+ reg += 4;
+ }
+
+ spin_lock_irqsave(&bank->slock, flags);
+
+ data = readl(reg);
+ data &= ~(mask << shift);
+ if (!input)
+ data |= FUNC_OUTPUT << shift;
+ writel(data, reg);
+
+ spin_unlock_irqrestore(&bank->slock, flags);
+
+ return 0;
+}
+
+/* gpiolib gpio_direction_input callback function. */
+static int samsung_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
+{
+ return samsung_gpio_set_direction(gc, offset, true);
+}
+
+/* gpiolib gpio_direction_output callback function. */
+static int samsung_gpio_direction_output(struct gpio_chip *gc, unsigned offset,
+ int value)
+{
+ samsung_gpio_set(gc, offset, value);
+ return samsung_gpio_set_direction(gc, offset, false);
+}
+
+/*
+ * gpiolib gpio_to_irq callback function. Creates a mapping between a GPIO pin
+ * and a virtual IRQ, if not already present.
+ */
+static int samsung_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
+{
+ struct samsung_pin_bank *bank = gc_to_pin_bank(gc);
+ unsigned int virq;
+
+ if (!bank->irq_domain)
+ return -ENXIO;
+
+ virq = irq_create_mapping(bank->irq_domain, offset);
+
+ return (virq) ? : -ENXIO;
+}
+
+static struct samsung_pin_group *samsung_pinctrl_create_groups(
+ struct device *dev,
+ struct samsung_pinctrl_drv_data *drvdata,
+ unsigned int *cnt)
+{
+ struct pinctrl_desc *ctrldesc = &drvdata->pctl;
+ struct samsung_pin_group *groups, *grp;
+ const struct pinctrl_pin_desc *pdesc;
+ int i;
+
+ groups = devm_kzalloc(dev, ctrldesc->npins * sizeof(*groups),
+ GFP_KERNEL);
+ if (!groups)
+ return ERR_PTR(-EINVAL);
+ grp = groups;
+
+ pdesc = ctrldesc->pins;
+ for (i = 0; i < ctrldesc->npins; ++i, ++pdesc, ++grp) {
+ grp->name = pdesc->name;
+ grp->pins = &pdesc->number;
+ grp->num_pins = 1;
+ }
+
+ *cnt = ctrldesc->npins;
+ return groups;
+}
+
+static int samsung_pinctrl_create_function(struct device *dev,
+ struct samsung_pinctrl_drv_data *drvdata,
+ struct device_node *func_np,
+ struct samsung_pmx_func *func)
+{
+ int npins;
+ int ret;
+ int i;
+
+ if (of_property_read_u32(func_np, "samsung,pin-function", &func->val))
+ return 0;
+
+ npins = of_property_count_strings(func_np, "samsung,pins");
+ if (npins < 1) {
+ dev_err(dev, "invalid pin list in %s node", func_np->name);
+ return -EINVAL;
+ }
+
+ func->name = func_np->full_name;
+
+ func->groups = devm_kzalloc(dev, npins * sizeof(char *), GFP_KERNEL);
+ if (!func->groups)
+ return -ENOMEM;
+
+ for (i = 0; i < npins; ++i) {
+ const char *gname;
+
+ ret = of_property_read_string_index(func_np, "samsung,pins",
+ i, &gname);
+ if (ret) {
+ dev_err(dev,
+ "failed to read pin name %d from %s node\n",
+ i, func_np->name);
+ return ret;
+ }
+
+ func->groups[i] = gname;
+ }
+
+ func->num_groups = npins;
+ return 1;
+}
+
+static struct samsung_pmx_func *samsung_pinctrl_create_functions(
+ struct device *dev,
+ struct samsung_pinctrl_drv_data *drvdata,
+ unsigned int *cnt)
+{
+ struct samsung_pmx_func *functions, *func;
+ struct device_node *dev_np = dev->of_node;
+ struct device_node *cfg_np;
+ unsigned int func_cnt = 0;
+ int ret;
+
+ /*
+ * Iterate over all the child nodes of the pin controller node
+ * and create pin groups and pin function lists.
+ */
+ for_each_child_of_node(dev_np, cfg_np) {
+ struct device_node *func_np;
+
+ if (!of_get_child_count(cfg_np)) {
+ if (!of_find_property(cfg_np,
+ "samsung,pin-function", NULL))
+ continue;
+ ++func_cnt;
+ continue;
+ }
+
+ for_each_child_of_node(cfg_np, func_np) {
+ if (!of_find_property(func_np,
+ "samsung,pin-function", NULL))
+ continue;
+ ++func_cnt;
+ }
+ }
+
+ functions = devm_kzalloc(dev, func_cnt * sizeof(*functions),
+ GFP_KERNEL);
+ if (!functions) {
+ dev_err(dev, "failed to allocate memory for function list\n");
+ return ERR_PTR(-EINVAL);
+ }
+ func = functions;
+
+ /*
+ * Iterate over all the child nodes of the pin controller node
+ * and create pin groups and pin function lists.
+ */
+ func_cnt = 0;
+ for_each_child_of_node(dev_np, cfg_np) {
+ struct device_node *func_np;
+
+ if (!of_get_child_count(cfg_np)) {
+ ret = samsung_pinctrl_create_function(dev, drvdata,
+ cfg_np, func);
+ if (ret < 0)
+ return ERR_PTR(ret);
+ if (ret > 0) {
+ ++func;
+ ++func_cnt;
+ }
+ continue;
+ }
+
+ for_each_child_of_node(cfg_np, func_np) {
+ ret = samsung_pinctrl_create_function(dev, drvdata,
+ func_np, func);
+ if (ret < 0)
+ return ERR_PTR(ret);
+ if (ret > 0) {
+ ++func;
+ ++func_cnt;
+ }
+ }
+ }
+
+ *cnt = func_cnt;
+ return functions;
+}
+
+/*
+ * Parse the information about all the available pin groups and pin functions
+ * from device node of the pin-controller. A pin group is formed with all
+ * the pins listed in the "samsung,pins" property.
+ */
+
+static int samsung_pinctrl_parse_dt(struct platform_device *pdev,
+ struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct device *dev = &pdev->dev;
+ struct samsung_pin_group *groups;
+ struct samsung_pmx_func *functions;
+ unsigned int grp_cnt = 0, func_cnt = 0;
+
+ groups = samsung_pinctrl_create_groups(dev, drvdata, &grp_cnt);
+ if (IS_ERR(groups)) {
+ dev_err(dev, "failed to parse pin groups\n");
+ return PTR_ERR(groups);
+ }
+
+ functions = samsung_pinctrl_create_functions(dev, drvdata, &func_cnt);
+ if (IS_ERR(functions)) {
+ dev_err(dev, "failed to parse pin functions\n");
+ return PTR_ERR(groups);
+ }
+
+ drvdata->pin_groups = groups;
+ drvdata->nr_groups = grp_cnt;
+ drvdata->pmx_functions = functions;
+ drvdata->nr_functions = func_cnt;
+
+ return 0;
+}
+
+/* register the pinctrl interface with the pinctrl subsystem */
+static int samsung_pinctrl_register(struct platform_device *pdev,
+ struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct pinctrl_desc *ctrldesc = &drvdata->pctl;
+ struct pinctrl_pin_desc *pindesc, *pdesc;
+ struct samsung_pin_bank *pin_bank;
+ char *pin_names;
+ int pin, bank, ret;
+
+ ctrldesc->name = "samsung-pinctrl";
+ ctrldesc->owner = THIS_MODULE;
+ ctrldesc->pctlops = &samsung_pctrl_ops;
+ ctrldesc->pmxops = &samsung_pinmux_ops;
+ ctrldesc->confops = &samsung_pinconf_ops;
+
+ pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) *
+ drvdata->ctrl->nr_pins, GFP_KERNEL);
+ if (!pindesc) {
+ dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n");
+ return -ENOMEM;
+ }
+ ctrldesc->pins = pindesc;
+ ctrldesc->npins = drvdata->ctrl->nr_pins;
+
+ /* dynamically populate the pin number and pin name for pindesc */
+ for (pin = 0, pdesc = pindesc; pin < ctrldesc->npins; pin++, pdesc++)
+ pdesc->number = pin + drvdata->ctrl->base;
+
+ /*
+ * allocate space for storing the dynamically generated names for all
+ * the pins which belong to this pin-controller.
+ */
+ pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH *
+ drvdata->ctrl->nr_pins, GFP_KERNEL);
+ if (!pin_names) {
+ dev_err(&pdev->dev, "mem alloc for pin names failed\n");
+ return -ENOMEM;
+ }
+
+ /* for each pin, the name of the pin is pin-bank name + pin number */
+ for (bank = 0; bank < drvdata->ctrl->nr_banks; bank++) {
+ pin_bank = &drvdata->ctrl->pin_banks[bank];
+ for (pin = 0; pin < pin_bank->nr_pins; pin++) {
+ sprintf(pin_names, "%s-%d", pin_bank->name, pin);
+ pdesc = pindesc + pin_bank->pin_base + pin;
+ pdesc->name = pin_names;
+ pin_names += PIN_NAME_LENGTH;
+ }
+ }
+
+ ret = samsung_pinctrl_parse_dt(pdev, drvdata);
+ if (ret)
+ return ret;
+
+ drvdata->pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, drvdata);
+ if (!drvdata->pctl_dev) {
+ dev_err(&pdev->dev, "could not register pinctrl driver\n");
+ return -EINVAL;
+ }
+
+ for (bank = 0; bank < drvdata->ctrl->nr_banks; ++bank) {
+ pin_bank = &drvdata->ctrl->pin_banks[bank];
+ pin_bank->grange.name = pin_bank->name;
+ pin_bank->grange.id = bank;
+ pin_bank->grange.pin_base = drvdata->ctrl->base
+ + pin_bank->pin_base;
+ pin_bank->grange.base = pin_bank->gpio_chip.base;
+ pin_bank->grange.npins = pin_bank->gpio_chip.ngpio;
+ pin_bank->grange.gc = &pin_bank->gpio_chip;
+ pinctrl_add_gpio_range(drvdata->pctl_dev, &pin_bank->grange);
+ }
+
+ return 0;
+}
+
+static int samsung_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ return pinctrl_request_gpio(chip->base + offset);
+}
+
+static void samsung_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+ pinctrl_free_gpio(chip->base + offset);
+}
+
+static const struct gpio_chip samsung_gpiolib_chip = {
+ .request = samsung_gpio_request,
+ .free = samsung_gpio_free,
+ .set = samsung_gpio_set,
+ .get = samsung_gpio_get,
+ .direction_input = samsung_gpio_direction_input,
+ .direction_output = samsung_gpio_direction_output,
+ .to_irq = samsung_gpio_to_irq,
+ .owner = THIS_MODULE,
+};
+
+/* register the gpiolib interface with the gpiolib subsystem */
+static int samsung_gpiolib_register(struct platform_device *pdev,
+ struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
+ struct samsung_pin_bank *bank = ctrl->pin_banks;
+ struct gpio_chip *gc;
+ int ret;
+ int i;
+
+ for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
+ bank->gpio_chip = samsung_gpiolib_chip;
+
+ gc = &bank->gpio_chip;
+ gc->base = ctrl->base + bank->pin_base;
+ gc->ngpio = bank->nr_pins;
+ gc->dev = &pdev->dev;
+ gc->of_node = bank->of_node;
+ gc->label = bank->name;
+
+ ret = gpiochip_add(gc);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
+ gc->label, ret);
+ goto fail;
+ }
+ }
+
+ return 0;
+
+fail:
+ for (--i, --bank; i >= 0; --i, --bank)
+ if (gpiochip_remove(&bank->gpio_chip))
+ dev_err(&pdev->dev, "gpio chip %s remove failed\n",
+ bank->gpio_chip.label);
+ return ret;
+}
+
+/* unregister the gpiolib interface with the gpiolib subsystem */
+static int samsung_gpiolib_unregister(struct platform_device *pdev,
+ struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
+ struct samsung_pin_bank *bank = ctrl->pin_banks;
+ int ret = 0;
+ int i;
+
+ for (i = 0; !ret && i < ctrl->nr_banks; ++i, ++bank)
+ ret = gpiochip_remove(&bank->gpio_chip);
+
+ if (ret)
+ dev_err(&pdev->dev, "gpio chip remove failed\n");
+
+ return ret;
+}
+
+static const struct of_device_id samsung_pinctrl_dt_match[];
+
+/* retrieve the soc specific data */
+static struct samsung_pin_ctrl *samsung_pinctrl_get_soc_data(
+ struct samsung_pinctrl_drv_data *d,
+ struct platform_device *pdev)
+{
+ int id;
+ const struct of_device_id *match;
+ struct device_node *node = pdev->dev.of_node;
+ struct device_node *np;
+ struct samsung_pin_ctrl *ctrl;
+ struct samsung_pin_bank *bank;
+ int i;
+
+ id = of_alias_get_id(node, "pinctrl");
+ if (id < 0) {
+ dev_err(&pdev->dev, "failed to get alias id\n");
+ return NULL;
+ }
+ match = of_match_node(samsung_pinctrl_dt_match, node);
+ ctrl = (struct samsung_pin_ctrl *)match->data + id;
+
+ bank = ctrl->pin_banks;
+ for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
+ spin_lock_init(&bank->slock);
+ bank->drvdata = d;
+ bank->pin_base = ctrl->nr_pins;
+ ctrl->nr_pins += bank->nr_pins;
+ }
+
+ for_each_child_of_node(node, np) {
+ if (!of_find_property(np, "gpio-controller", NULL))
+ continue;
+ bank = ctrl->pin_banks;
+ for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
+ if (!strcmp(bank->name, np->name)) {
+ bank->of_node = np;
+ break;
+ }
+ }
+ }
+
+ ctrl->base = pin_base;
+ pin_base += ctrl->nr_pins;
+
+ return ctrl;
+}
+
+static int samsung_pinctrl_probe(struct platform_device *pdev)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct device *dev = &pdev->dev;
+ struct samsung_pin_ctrl *ctrl;
+ struct resource *res;
+ int ret;
+
+ if (!dev->of_node) {
+ dev_err(dev, "device tree node not found\n");
+ return -ENODEV;
+ }
+
+ drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata) {
+ dev_err(dev, "failed to allocate memory for driver's "
+ "private data\n");
+ return -ENOMEM;
+ }
+
+ ctrl = samsung_pinctrl_get_soc_data(drvdata, pdev);
+ if (!ctrl) {
+ dev_err(&pdev->dev, "driver data not available\n");
+ return -EINVAL;
+ }
+ drvdata->ctrl = ctrl;
+ drvdata->dev = dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ drvdata->virt_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(drvdata->virt_base))
+ return PTR_ERR(drvdata->virt_base);
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (res)
+ drvdata->irq = res->start;
+
+ ret = samsung_gpiolib_register(pdev, drvdata);
+ if (ret)
+ return ret;
+
+ ret = samsung_pinctrl_register(pdev, drvdata);
+ if (ret) {
+ samsung_gpiolib_unregister(pdev, drvdata);
+ return ret;
+ }
+
+ if (ctrl->eint_gpio_init)
+ ctrl->eint_gpio_init(drvdata);
+ if (ctrl->eint_wkup_init)
+ ctrl->eint_wkup_init(drvdata);
+
+ platform_set_drvdata(pdev, drvdata);
+
+ /* Add to the global list */
+ list_add_tail(&drvdata->node, &drvdata_list);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+/**
+ * samsung_pinctrl_suspend_dev - save pinctrl state for suspend for a device
+ *
+ * Save data for all banks handled by this device.
+ */
+static void samsung_pinctrl_suspend_dev(
+ struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
+ void __iomem *virt_base = drvdata->virt_base;
+ int i;
+
+ for (i = 0; i < ctrl->nr_banks; i++) {
+ struct samsung_pin_bank *bank = &ctrl->pin_banks[i];
+ void __iomem *reg = virt_base + bank->pctl_offset;
+
+ u8 *offs = bank->type->reg_offset;
+ u8 *widths = bank->type->fld_width;
+ enum pincfg_type type;
+
+ /* Registers without a powerdown config aren't lost */
+ if (!widths[PINCFG_TYPE_CON_PDN])
+ continue;
+
+ for (type = 0; type < PINCFG_TYPE_NUM; type++)
+ if (widths[type])
+ bank->pm_save[type] = readl(reg + offs[type]);
+
+ if (widths[PINCFG_TYPE_FUNC] * bank->nr_pins > 32) {
+ /* Some banks have two config registers */
+ bank->pm_save[PINCFG_TYPE_NUM] =
+ readl(reg + offs[PINCFG_TYPE_FUNC] + 4);
+ pr_debug("Save %s @ %p (con %#010x %08x)\n",
+ bank->name, reg,
+ bank->pm_save[PINCFG_TYPE_FUNC],
+ bank->pm_save[PINCFG_TYPE_NUM]);
+ } else {
+ pr_debug("Save %s @ %p (con %#010x)\n", bank->name,
+ reg, bank->pm_save[PINCFG_TYPE_FUNC]);
+ }
+ }
+
+ if (ctrl->suspend)
+ ctrl->suspend(drvdata);
+}
+
+/**
+ * samsung_pinctrl_resume_dev - restore pinctrl state from suspend for a device
+ *
+ * Restore one of the banks that was saved during suspend.
+ *
+ * We don't bother doing anything complicated to avoid glitching lines since
+ * we're called before pad retention is turned off.
+ */
+static void samsung_pinctrl_resume_dev(struct samsung_pinctrl_drv_data *drvdata)
+{
+ struct samsung_pin_ctrl *ctrl = drvdata->ctrl;
+ void __iomem *virt_base = drvdata->virt_base;
+ int i;
+
+ if (ctrl->resume)
+ ctrl->resume(drvdata);
+
+ for (i = 0; i < ctrl->nr_banks; i++) {
+ struct samsung_pin_bank *bank = &ctrl->pin_banks[i];
+ void __iomem *reg = virt_base + bank->pctl_offset;
+
+ u8 *offs = bank->type->reg_offset;
+ u8 *widths = bank->type->fld_width;
+ enum pincfg_type type;
+
+ /* Registers without a powerdown config aren't lost */
+ if (!widths[PINCFG_TYPE_CON_PDN])
+ continue;
+
+ if (widths[PINCFG_TYPE_FUNC] * bank->nr_pins > 32) {
+ /* Some banks have two config registers */
+ pr_debug("%s @ %p (con %#010x %08x => %#010x %08x)\n",
+ bank->name, reg,
+ readl(reg + offs[PINCFG_TYPE_FUNC]),
+ readl(reg + offs[PINCFG_TYPE_FUNC] + 4),
+ bank->pm_save[PINCFG_TYPE_FUNC],
+ bank->pm_save[PINCFG_TYPE_NUM]);
+ writel(bank->pm_save[PINCFG_TYPE_NUM],
+ reg + offs[PINCFG_TYPE_FUNC] + 4);
+ } else {
+ pr_debug("%s @ %p (con %#010x => %#010x)\n", bank->name,
+ reg, readl(reg + offs[PINCFG_TYPE_FUNC]),
+ bank->pm_save[PINCFG_TYPE_FUNC]);
+ }
+ for (type = 0; type < PINCFG_TYPE_NUM; type++)
+ if (widths[type])
+ writel(bank->pm_save[type], reg + offs[type]);
+ }
+}
+
+/**
+ * samsung_pinctrl_suspend - save pinctrl state for suspend
+ *
+ * Save data for all banks across all devices.
+ */
+static int samsung_pinctrl_suspend(void)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+
+ list_for_each_entry(drvdata, &drvdata_list, node) {
+ samsung_pinctrl_suspend_dev(drvdata);
+ }
+
+ return 0;
+}
+
+/**
+ * samsung_pinctrl_resume - restore pinctrl state for suspend
+ *
+ * Restore data for all banks across all devices.
+ */
+static void samsung_pinctrl_resume(void)
+{
+ struct samsung_pinctrl_drv_data *drvdata;
+
+ list_for_each_entry_reverse(drvdata, &drvdata_list, node) {
+ samsung_pinctrl_resume_dev(drvdata);
+ }
+}
+
+#else
+#define samsung_pinctrl_suspend NULL
+#define samsung_pinctrl_resume NULL
+#endif
+
+static struct syscore_ops samsung_pinctrl_syscore_ops = {
+ .suspend = samsung_pinctrl_suspend,
+ .resume = samsung_pinctrl_resume,
+};
+
+static const struct of_device_id samsung_pinctrl_dt_match[] = {
+#ifdef CONFIG_PINCTRL_EXYNOS
+ { .compatible = "samsung,exynos3250-pinctrl",
+ .data = (void *)exynos3250_pin_ctrl },
+ { .compatible = "samsung,exynos4210-pinctrl",
+ .data = (void *)exynos4210_pin_ctrl },
+ { .compatible = "samsung,exynos4x12-pinctrl",
+ .data = (void *)exynos4x12_pin_ctrl },
+ { .compatible = "samsung,exynos5250-pinctrl",
+ .data = (void *)exynos5250_pin_ctrl },
+ { .compatible = "samsung,exynos5260-pinctrl",
+ .data = (void *)exynos5260_pin_ctrl },
+ { .compatible = "samsung,exynos5420-pinctrl",
+ .data = (void *)exynos5420_pin_ctrl },
+ { .compatible = "samsung,s5pv210-pinctrl",
+ .data = (void *)s5pv210_pin_ctrl },
+#endif
+#ifdef CONFIG_PINCTRL_S3C64XX
+ { .compatible = "samsung,s3c64xx-pinctrl",
+ .data = s3c64xx_pin_ctrl },
+#endif
+#ifdef CONFIG_PINCTRL_S3C24XX
+ { .compatible = "samsung,s3c2412-pinctrl",
+ .data = s3c2412_pin_ctrl },
+ { .compatible = "samsung,s3c2416-pinctrl",
+ .data = s3c2416_pin_ctrl },
+ { .compatible = "samsung,s3c2440-pinctrl",
+ .data = s3c2440_pin_ctrl },
+ { .compatible = "samsung,s3c2450-pinctrl",
+ .data = s3c2450_pin_ctrl },
+#endif
+ {},
+};
+MODULE_DEVICE_TABLE(of, samsung_pinctrl_dt_match);
+
+static struct platform_driver samsung_pinctrl_driver = {
+ .probe = samsung_pinctrl_probe,
+ .driver = {
+ .name = "samsung-pinctrl",
+ .owner = THIS_MODULE,
+ .of_match_table = samsung_pinctrl_dt_match,
+ },
+};
+
+static int __init samsung_pinctrl_drv_register(void)
+{
+ /*
+ * Register syscore ops for save/restore of registers across suspend.
+ * It's important to ensure that this driver is running at an earlier
+ * initcall level than any arch-specific init calls that install syscore
+ * ops that turn off pad retention (like exynos_pm_resume).
+ */
+ register_syscore_ops(&samsung_pinctrl_syscore_ops);
+
+ return platform_driver_register(&samsung_pinctrl_driver);
+}
+postcore_initcall(samsung_pinctrl_drv_register);
+
+static void __exit samsung_pinctrl_drv_unregister(void)
+{
+ platform_driver_unregister(&samsung_pinctrl_driver);
+}
+module_exit(samsung_pinctrl_drv_unregister);
+
+MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
+MODULE_DESCRIPTION("Samsung pinctrl driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's SoC's.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Copyright (c) 2012 Linaro Ltd
+ * http://www.linaro.org
+ *
+ * Author: Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __PINCTRL_SAMSUNG_H
+#define __PINCTRL_SAMSUNG_H
+
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/machine.h>
+
+#include <linux/gpio.h>
+
+/* pinmux function number for pin as gpio output line */
+#define FUNC_OUTPUT 0x1
+
+/**
+ * enum pincfg_type - possible pin configuration types supported.
+ * @PINCFG_TYPE_FUNC: Function configuration.
+ * @PINCFG_TYPE_DAT: Pin value configuration.
+ * @PINCFG_TYPE_PUD: Pull up/down configuration.
+ * @PINCFG_TYPE_DRV: Drive strength configuration.
+ * @PINCFG_TYPE_CON_PDN: Pin function in power down mode.
+ * @PINCFG_TYPE_PUD_PDN: Pull up/down configuration in power down mode.
+ */
+enum pincfg_type {
+ PINCFG_TYPE_FUNC,
+ PINCFG_TYPE_DAT,
+ PINCFG_TYPE_PUD,
+ PINCFG_TYPE_DRV,
+ PINCFG_TYPE_CON_PDN,
+ PINCFG_TYPE_PUD_PDN,
+
+ PINCFG_TYPE_NUM
+};
+
+/*
+ * pin configuration (pull up/down and drive strength) type and its value are
+ * packed together into a 16-bits. The upper 8-bits represent the configuration
+ * type and the lower 8-bits hold the value of the configuration type.
+ */
+#define PINCFG_TYPE_MASK 0xFF
+#define PINCFG_VALUE_SHIFT 8
+#define PINCFG_VALUE_MASK (0xFF << PINCFG_VALUE_SHIFT)
+#define PINCFG_PACK(type, value) (((value) << PINCFG_VALUE_SHIFT) | type)
+#define PINCFG_UNPACK_TYPE(cfg) ((cfg) & PINCFG_TYPE_MASK)
+#define PINCFG_UNPACK_VALUE(cfg) (((cfg) & PINCFG_VALUE_MASK) >> \
+ PINCFG_VALUE_SHIFT)
+/**
+ * enum eint_type - possible external interrupt types.
+ * @EINT_TYPE_NONE: bank does not support external interrupts
+ * @EINT_TYPE_GPIO: bank supportes external gpio interrupts
+ * @EINT_TYPE_WKUP: bank supportes external wakeup interrupts
+ * @EINT_TYPE_WKUP_MUX: bank supports multiplexed external wakeup interrupts
+ *
+ * Samsung GPIO controller groups all the available pins into banks. The pins
+ * in a pin bank can support external gpio interrupts or external wakeup
+ * interrupts or no interrupts at all. From a software perspective, the only
+ * difference between external gpio and external wakeup interrupts is that
+ * the wakeup interrupts can additionally wakeup the system if it is in
+ * suspended state.
+ */
+enum eint_type {
+ EINT_TYPE_NONE,
+ EINT_TYPE_GPIO,
+ EINT_TYPE_WKUP,
+ EINT_TYPE_WKUP_MUX,
+};
+
+/* maximum length of a pin in pin descriptor (example: "gpa0-0") */
+#define PIN_NAME_LENGTH 10
+
+#define PIN_GROUP(n, p, f) \
+ { \
+ .name = n, \
+ .pins = p, \
+ .num_pins = ARRAY_SIZE(p), \
+ .func = f \
+ }
+
+#define PMX_FUNC(n, g) \
+ { \
+ .name = n, \
+ .groups = g, \
+ .num_groups = ARRAY_SIZE(g), \
+ }
+
+struct samsung_pinctrl_drv_data;
+
+/**
+ * struct samsung_pin_bank_type: pin bank type description
+ * @fld_width: widths of configuration bitfields (0 if unavailable)
+ * @reg_offset: offsets of configuration registers (don't care of width is 0)
+ */
+struct samsung_pin_bank_type {
+ u8 fld_width[PINCFG_TYPE_NUM];
+ u8 reg_offset[PINCFG_TYPE_NUM];
+};
+
+/**
+ * struct samsung_pin_bank: represent a controller pin-bank.
+ * @type: type of the bank (register offsets and bitfield widths)
+ * @pctl_offset: starting offset of the pin-bank registers.
+ * @pin_base: starting pin number of the bank.
+ * @nr_pins: number of pins included in this bank.
+ * @eint_func: function to set in CON register to configure pin as EINT.
+ * @eint_type: type of the external interrupt supported by the bank.
+ * @eint_mask: bit mask of pins which support EINT function.
+ * @name: name to be prefixed for each pin in this pin bank.
+ * @of_node: OF node of the bank.
+ * @drvdata: link to controller driver data
+ * @irq_domain: IRQ domain of the bank.
+ * @gpio_chip: GPIO chip of the bank.
+ * @grange: linux gpio pin range supported by this bank.
+ * @slock: spinlock protecting bank registers
+ * @pm_save: saved register values during suspend
+ */
+struct samsung_pin_bank {
+ struct samsung_pin_bank_type *type;
+ u32 pctl_offset;
+ u32 pin_base;
+ u8 nr_pins;
+ u8 eint_func;
+ enum eint_type eint_type;
+ u32 eint_mask;
+ u32 eint_offset;
+ char *name;
+ void *soc_priv;
+ struct device_node *of_node;
+ struct samsung_pinctrl_drv_data *drvdata;
+ struct irq_domain *irq_domain;
+ struct gpio_chip gpio_chip;
+ struct pinctrl_gpio_range grange;
+ spinlock_t slock;
+
+ u32 pm_save[PINCFG_TYPE_NUM + 1]; /* +1 to handle double CON registers*/
+};
+
+/**
+ * struct samsung_pin_ctrl: represent a pin controller.
+ * @pin_banks: list of pin banks included in this controller.
+ * @nr_banks: number of pin banks.
+ * @base: starting system wide pin number.
+ * @nr_pins: number of pins supported by the controller.
+ * @eint_gpio_init: platform specific callback to setup the external gpio
+ * interrupts for the controller.
+ * @eint_wkup_init: platform specific callback to setup the external wakeup
+ * interrupts for the controller.
+ * @label: for debug information.
+ */
+struct samsung_pin_ctrl {
+ struct samsung_pin_bank *pin_banks;
+ u32 nr_banks;
+
+ u32 base;
+ u32 nr_pins;
+
+ int (*eint_gpio_init)(struct samsung_pinctrl_drv_data *);
+ int (*eint_wkup_init)(struct samsung_pinctrl_drv_data *);
+ void (*suspend)(struct samsung_pinctrl_drv_data *);
+ void (*resume)(struct samsung_pinctrl_drv_data *);
+
+ char *label;
+};
+
+/**
+ * struct samsung_pinctrl_drv_data: wrapper for holding driver data together.
+ * @node: global list node
+ * @virt_base: register base address of the controller.
+ * @dev: device instance representing the controller.
+ * @irq: interrpt number used by the controller to notify gpio interrupts.
+ * @ctrl: pin controller instance managed by the driver.
+ * @pctl: pin controller descriptor registered with the pinctrl subsystem.
+ * @pctl_dev: cookie representing pinctrl device instance.
+ * @pin_groups: list of pin groups available to the driver.
+ * @nr_groups: number of such pin groups.
+ * @pmx_functions: list of pin functions available to the driver.
+ * @nr_function: number of such pin functions.
+ */
+struct samsung_pinctrl_drv_data {
+ struct list_head node;
+ void __iomem *virt_base;
+ struct device *dev;
+ int irq;
+
+ struct samsung_pin_ctrl *ctrl;
+ struct pinctrl_desc pctl;
+ struct pinctrl_dev *pctl_dev;
+
+ const struct samsung_pin_group *pin_groups;
+ unsigned int nr_groups;
+ const struct samsung_pmx_func *pmx_functions;
+ unsigned int nr_functions;
+};
+
+/**
+ * struct samsung_pin_group: represent group of pins of a pinmux function.
+ * @name: name of the pin group, used to lookup the group.
+ * @pins: the pins included in this group.
+ * @num_pins: number of pins included in this group.
+ * @func: the function number to be programmed when selected.
+ */
+struct samsung_pin_group {
+ const char *name;
+ const unsigned int *pins;
+ u8 num_pins;
+ u8 func;
+};
+
+/**
+ * struct samsung_pmx_func: represent a pin function.
+ * @name: name of the pin function, used to lookup the function.
+ * @groups: one or more names of pin groups that provide this function.
+ * @num_groups: number of groups included in @groups.
+ */
+struct samsung_pmx_func {
+ const char *name;
+ const char **groups;
+ u8 num_groups;
+ u32 val;
+};
+
+/* list of all exported SoC specific data */
+extern struct samsung_pin_ctrl exynos3250_pin_ctrl[];
+extern struct samsung_pin_ctrl exynos4210_pin_ctrl[];
+extern struct samsung_pin_ctrl exynos4x12_pin_ctrl[];
+extern struct samsung_pin_ctrl exynos5250_pin_ctrl[];
+extern struct samsung_pin_ctrl exynos5260_pin_ctrl[];
+extern struct samsung_pin_ctrl exynos5420_pin_ctrl[];
+extern struct samsung_pin_ctrl s3c64xx_pin_ctrl[];
+extern struct samsung_pin_ctrl s3c2412_pin_ctrl[];
+extern struct samsung_pin_ctrl s3c2416_pin_ctrl[];
+extern struct samsung_pin_ctrl s3c2440_pin_ctrl[];
+extern struct samsung_pin_ctrl s3c2450_pin_ctrl[];
+extern struct samsung_pin_ctrl s5pv210_pin_ctrl[];
+
+#endif /* __PINCTRL_SAMSUNG_H */
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff