mfd: Add 88PM8607 driver
authorHaojian Zhuang <haojian.zhuang@marvell.com>
Thu, 17 Sep 2009 12:54:03 +0000 (08:54 -0400)
committerSamuel Ortiz <sameo@linux.intel.com>
Sun, 13 Dec 2009 18:20:37 +0000 (19:20 +0100)
This adds a core driver for 88PM8607 found in Marvell DKB development
platform. This driver is a proxy for all accesses to 88PM8607
sub-drivers which will be merged on top of this one, RTC, regulators,
battery and so on.

This chip is manufactured by Marvell.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
drivers/mfd/88pm8607.c [new file with mode: 0644]
drivers/mfd/Kconfig
drivers/mfd/Makefile
include/linux/mfd/88pm8607.h [new file with mode: 0644]

diff --git a/drivers/mfd/88pm8607.c b/drivers/mfd/88pm8607.c
new file mode 100644 (file)
index 0000000..7e3f659
--- /dev/null
@@ -0,0 +1,302 @@
+/*
+ * Base driver for Marvell 88PM8607
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *     Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/88pm8607.h>
+
+
+#define PM8607_REG_RESOURCE(_start, _end)              \
+{                                                      \
+       .start  = PM8607_##_start,                      \
+       .end    = PM8607_##_end,                        \
+       .flags  = IORESOURCE_IO,                        \
+}
+
+static struct resource pm8607_regulator_resources[] = {
+       PM8607_REG_RESOURCE(BUCK1, BUCK1),
+       PM8607_REG_RESOURCE(BUCK2, BUCK2),
+       PM8607_REG_RESOURCE(BUCK3, BUCK3),
+       PM8607_REG_RESOURCE(LDO1,  LDO1),
+       PM8607_REG_RESOURCE(LDO2,  LDO2),
+       PM8607_REG_RESOURCE(LDO3,  LDO3),
+       PM8607_REG_RESOURCE(LDO4,  LDO4),
+       PM8607_REG_RESOURCE(LDO5,  LDO5),
+       PM8607_REG_RESOURCE(LDO6,  LDO6),
+       PM8607_REG_RESOURCE(LDO7,  LDO7),
+       PM8607_REG_RESOURCE(LDO8,  LDO8),
+       PM8607_REG_RESOURCE(LDO9,  LDO9),
+       PM8607_REG_RESOURCE(LDO10, LDO10),
+       PM8607_REG_RESOURCE(LDO12, LDO12),
+       PM8607_REG_RESOURCE(LDO14, LDO14),
+};
+
+#define PM8607_REG_DEVS(_name, _id)                                    \
+{                                                                      \
+       .name           = "88pm8607-" #_name,                           \
+       .num_resources  = 1,                                            \
+       .resources      = &pm8607_regulator_resources[PM8607_ID_##_id], \
+}
+
+static struct mfd_cell pm8607_devs[] = {
+       PM8607_REG_DEVS(buck1, BUCK1),
+       PM8607_REG_DEVS(buck2, BUCK2),
+       PM8607_REG_DEVS(buck3, BUCK3),
+       PM8607_REG_DEVS(ldo1,  LDO1),
+       PM8607_REG_DEVS(ldo2,  LDO2),
+       PM8607_REG_DEVS(ldo3,  LDO3),
+       PM8607_REG_DEVS(ldo4,  LDO4),
+       PM8607_REG_DEVS(ldo5,  LDO5),
+       PM8607_REG_DEVS(ldo6,  LDO6),
+       PM8607_REG_DEVS(ldo7,  LDO7),
+       PM8607_REG_DEVS(ldo8,  LDO8),
+       PM8607_REG_DEVS(ldo9,  LDO9),
+       PM8607_REG_DEVS(ldo10, LDO10),
+       PM8607_REG_DEVS(ldo12, LDO12),
+       PM8607_REG_DEVS(ldo14, LDO14),
+};
+
+static inline int pm8607_read_device(struct pm8607_chip *chip,
+                                    int reg, int bytes, void *dest)
+{
+       struct i2c_client *i2c = chip->client;
+       unsigned char data;
+       int ret;
+
+       data = (unsigned char)reg;
+       ret = i2c_master_send(i2c, &data, 1);
+       if (ret < 0)
+               return ret;
+
+       ret = i2c_master_recv(i2c, dest, bytes);
+       if (ret < 0)
+               return ret;
+       return 0;
+}
+
+static inline int pm8607_write_device(struct pm8607_chip *chip,
+                                     int reg, int bytes, void *src)
+{
+       struct i2c_client *i2c = chip->client;
+       unsigned char buf[bytes + 1];
+       int ret;
+
+       buf[0] = (unsigned char)reg;
+       memcpy(&buf[1], src, bytes);
+
+       ret = i2c_master_send(i2c, buf, bytes + 1);
+       if (ret < 0)
+               return ret;
+       return 0;
+}
+
+int pm8607_reg_read(struct pm8607_chip *chip, int reg)
+{
+       unsigned char data;
+       int ret;
+
+       mutex_lock(&chip->io_lock);
+       ret = chip->read(chip, reg, 1, &data);
+       mutex_unlock(&chip->io_lock);
+
+       if (ret < 0)
+               return ret;
+       else
+               return (int)data;
+}
+EXPORT_SYMBOL(pm8607_reg_read);
+
+int pm8607_reg_write(struct pm8607_chip *chip, int reg,
+                    unsigned char data)
+{
+       int ret;
+
+       mutex_lock(&chip->io_lock);
+       ret = chip->write(chip, reg, 1, &data);
+       mutex_unlock(&chip->io_lock);
+
+       return ret;
+}
+EXPORT_SYMBOL(pm8607_reg_write);
+
+int pm8607_bulk_read(struct pm8607_chip *chip, int reg,
+                    int count, unsigned char *buf)
+{
+       int ret;
+
+       mutex_lock(&chip->io_lock);
+       ret = chip->read(chip, reg, count, buf);
+       mutex_unlock(&chip->io_lock);
+
+       return ret;
+}
+EXPORT_SYMBOL(pm8607_bulk_read);
+
+int pm8607_bulk_write(struct pm8607_chip *chip, int reg,
+                     int count, unsigned char *buf)
+{
+       int ret;
+
+       mutex_lock(&chip->io_lock);
+       ret = chip->write(chip, reg, count, buf);
+       mutex_unlock(&chip->io_lock);
+
+       return ret;
+}
+EXPORT_SYMBOL(pm8607_bulk_write);
+
+int pm8607_set_bits(struct pm8607_chip *chip, int reg,
+                   unsigned char mask, unsigned char data)
+{
+       unsigned char value;
+       int ret;
+
+       mutex_lock(&chip->io_lock);
+       ret = chip->read(chip, reg, 1, &value);
+       if (ret < 0)
+               goto out;
+       value &= ~mask;
+       value |= data;
+       ret = chip->write(chip, reg, 1, &value);
+out:
+       mutex_unlock(&chip->io_lock);
+       return ret;
+}
+EXPORT_SYMBOL(pm8607_set_bits);
+
+
+static const struct i2c_device_id pm8607_id_table[] = {
+       { "88PM8607", 0 },
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, pm8607_id_table);
+
+
+static int __devinit pm8607_probe(struct i2c_client *client,
+                                 const struct i2c_device_id *id)
+{
+       struct pm8607_platform_data *pdata = client->dev.platform_data;
+       struct pm8607_chip *chip;
+       int i, count;
+       int ret;
+
+       chip = kzalloc(sizeof(struct pm8607_chip), GFP_KERNEL);
+       if (chip == NULL)
+               return -ENOMEM;
+
+       chip->client = client;
+       chip->dev = &client->dev;
+       chip->read = pm8607_read_device;
+       chip->write = pm8607_write_device;
+       i2c_set_clientdata(client, chip);
+
+       mutex_init(&chip->io_lock);
+       dev_set_drvdata(chip->dev, chip);
+
+       ret = pm8607_reg_read(chip, PM8607_CHIP_ID);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
+               goto out;
+       }
+       if ((ret & CHIP_ID_MASK) == CHIP_ID)
+               dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
+                        ret);
+       else {
+               dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
+                       "Chip ID: %02x\n", ret);
+               goto out;
+       }
+       chip->chip_id = ret;
+
+       ret = pm8607_reg_read(chip, PM8607_BUCK3);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
+               goto out;
+       }
+       if (ret & PM8607_BUCK3_DOUBLE)
+               chip->buck3_double = 1;
+
+       ret = pm8607_reg_read(chip, PM8607_MISC1);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
+               goto out;
+       }
+       if (pdata->i2c_port == PI2C_PORT)
+               ret |= PM8607_MISC1_PI2C;
+       else
+               ret &= ~PM8607_MISC1_PI2C;
+       ret = pm8607_reg_write(chip, PM8607_MISC1, ret);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to write MISC1 register: %d\n", ret);
+               goto out;
+       }
+
+
+       count = ARRAY_SIZE(pm8607_devs);
+       for (i = 0; i < count; i++) {
+               ret = mfd_add_devices(chip->dev, i, &pm8607_devs[i],
+                                     1, NULL, 0);
+               if (ret != 0) {
+                       dev_err(chip->dev, "Failed to add subdevs\n");
+                       goto out;
+               }
+       }
+
+       return 0;
+
+out:
+       i2c_set_clientdata(client, NULL);
+       kfree(chip);
+       return ret;
+}
+
+static int __devexit pm8607_remove(struct i2c_client *client)
+{
+       struct pm8607_chip *chip = i2c_get_clientdata(client);
+
+       mfd_remove_devices(chip->dev);
+       kfree(chip);
+       return 0;
+}
+
+static struct i2c_driver pm8607_driver = {
+       .driver = {
+               .name   = "88PM8607",
+               .owner  = THIS_MODULE,
+       },
+       .probe          = pm8607_probe,
+       .remove         = __devexit_p(pm8607_remove),
+       .id_table       = pm8607_id_table,
+};
+
+static int __init pm8607_init(void)
+{
+       int ret;
+       ret = i2c_add_driver(&pm8607_driver);
+       if (ret != 0)
+               pr_err("Failed to register 88PM8607 I2C driver: %d\n", ret);
+       return ret;
+}
+subsys_initcall(pm8607_init);
+
+static void __exit pm8607_exit(void)
+{
+       i2c_del_driver(&pm8607_driver);
+}
+module_exit(pm8607_exit);
+
+MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM8607");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
index a296e717e86edbad24c9c34460ae65376c531af4..26a36f8873570e4256661fb20c9af6298342b06c 100644 (file)
@@ -319,6 +319,16 @@ config EZX_PCAP
          This enables the PCAP ASIC present on EZX Phones. This is
          needed for MMC, TouchScreen, Sound, USB, etc..
 
+config MFD_88PM8607
+       bool "Support Marvell 88PM8607"
+       depends on I2C
+       select MFD_CORE
+       help
+         This supports for Marvell 88PM8607 Power Management IC. This includes
+         the I2C driver and the core APIs _only_, you have to select
+         individual components like voltage regulators, RTC and
+         battery-charger under the corresponding menus.
+
 endmenu
 
 menu "Multimedia Capabilities Port drivers"
index 11350c1d9301a72296a563daad3fc94e1f52b182..2596add427a2eb0aa70a1f1af8fd4d3f6fdd1f35 100644 (file)
@@ -52,3 +52,4 @@ obj-$(CONFIG_PCF50633_ADC)    += pcf50633-adc.o
 obj-$(CONFIG_PCF50633_GPIO)    += pcf50633-gpio.o
 obj-$(CONFIG_AB3100_CORE)      += ab3100-core.o
 obj-$(CONFIG_AB3100_OTP)       += ab3100-otp.o
+obj-$(CONFIG_MFD_88PM8607)     += 88pm8607.o
diff --git a/include/linux/mfd/88pm8607.h b/include/linux/mfd/88pm8607.h
new file mode 100644 (file)
index 0000000..f41b428
--- /dev/null
@@ -0,0 +1,217 @@
+/*
+ * Marvell 88PM8607 Interface
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *     Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_MFD_88PM8607_H
+#define __LINUX_MFD_88PM8607_H
+
+enum {
+       PM8607_ID_BUCK1 = 0,
+       PM8607_ID_BUCK2,
+       PM8607_ID_BUCK3,
+
+       PM8607_ID_LDO1,
+       PM8607_ID_LDO2,
+       PM8607_ID_LDO3,
+       PM8607_ID_LDO4,
+       PM8607_ID_LDO5,
+       PM8607_ID_LDO6,
+       PM8607_ID_LDO7,
+       PM8607_ID_LDO8,
+       PM8607_ID_LDO9,
+       PM8607_ID_LDO10,
+       PM8607_ID_LDO12,
+       PM8607_ID_LDO14,
+
+       PM8607_ID_RG_MAX,
+};
+
+#define CHIP_ID                                (0x40)
+#define CHIP_ID_MASK                   (0xF8)
+
+/* Interrupt Registers */
+#define PM8607_STATUS_1                        (0x01)
+#define PM8607_STATUS_2                        (0x02)
+#define PM8607_INT_STATUS1             (0x03)
+#define PM8607_INT_STATUS2             (0x04)
+#define PM8607_INT_STATUS3             (0x05)
+#define PM8607_INT_MASK_1              (0x06)
+#define PM8607_INT_MASK_2              (0x07)
+#define PM8607_INT_MASK_3              (0x08)
+
+/* Regulator Control Registers */
+#define PM8607_LDO1                    (0x10)
+#define PM8607_LDO2                    (0x11)
+#define PM8607_LDO3                    (0x12)
+#define PM8607_LDO4                    (0x13)
+#define PM8607_LDO5                    (0x14)
+#define PM8607_LDO6                    (0x15)
+#define PM8607_LDO7                    (0x16)
+#define PM8607_LDO8                    (0x17)
+#define PM8607_LDO9                    (0x18)
+#define PM8607_LDO10                   (0x19)
+#define PM8607_LDO12                   (0x1A)
+#define PM8607_LDO14                   (0x1B)
+#define PM8607_SLEEP_MODE1             (0x1C)
+#define PM8607_SLEEP_MODE2             (0x1D)
+#define PM8607_SLEEP_MODE3             (0x1E)
+#define PM8607_SLEEP_MODE4             (0x1F)
+#define PM8607_GO                      (0x20)
+#define PM8607_SLEEP_BUCK1             (0x21)
+#define PM8607_SLEEP_BUCK2             (0x22)
+#define PM8607_SLEEP_BUCK3             (0x23)
+#define PM8607_BUCK1                   (0x24)
+#define PM8607_BUCK2                   (0x25)
+#define PM8607_BUCK3                   (0x26)
+#define PM8607_BUCK_CONTROLS           (0x27)
+#define PM8607_SUPPLIES_EN11           (0x2B)
+#define PM8607_SUPPLIES_EN12           (0x2C)
+#define PM8607_GROUP1                  (0x2D)
+#define PM8607_GROUP2                  (0x2E)
+#define PM8607_GROUP3                  (0x2F)
+#define PM8607_GROUP4                  (0x30)
+#define PM8607_GROUP5                  (0x31)
+#define PM8607_GROUP6                  (0x32)
+#define PM8607_SUPPLIES_EN21           (0x33)
+#define PM8607_SUPPLIES_EN22           (0x34)
+
+/* RTC Control Registers */
+#define PM8607_RTC1                    (0xA0)
+#define PM8607_RTC_COUNTER1            (0xA1)
+#define PM8607_RTC_COUNTER2            (0xA2)
+#define PM8607_RTC_COUNTER3            (0xA3)
+#define PM8607_RTC_COUNTER4            (0xA4)
+#define PM8607_RTC_EXPIRE1             (0xA5)
+#define PM8607_RTC_EXPIRE2             (0xA6)
+#define PM8607_RTC_EXPIRE3             (0xA7)
+#define PM8607_RTC_EXPIRE4             (0xA8)
+#define PM8607_RTC_TRIM1               (0xA9)
+#define PM8607_RTC_TRIM2               (0xAA)
+#define PM8607_RTC_TRIM3               (0xAB)
+#define PM8607_RTC_TRIM4               (0xAC)
+#define PM8607_RTC_MISC1               (0xAD)
+#define PM8607_RTC_MISC2               (0xAE)
+#define PM8607_RTC_MISC3               (0xAF)
+
+/* Misc Registers */
+#define PM8607_CHIP_ID                 (0x00)
+#define PM8607_LDO1                    (0x10)
+#define PM8607_DVC3                    (0x26)
+#define PM8607_MISC1                   (0x40)
+
+/* bit definitions for PM8607 events */
+#define PM8607_EVENT_ONKEY             (1 << 0)
+#define PM8607_EVENT_EXTON             (1 << 1)
+#define PM8607_EVENT_CHG               (1 << 2)
+#define PM8607_EVENT_BAT               (1 << 3)
+#define PM8607_EVENT_RTC               (1 << 4)
+#define PM8607_EVENT_CC                        (1 << 5)
+#define PM8607_EVENT_VBAT              (1 << 8)
+#define PM8607_EVENT_VCHG              (1 << 9)
+#define PM8607_EVENT_VSYS              (1 << 10)
+#define PM8607_EVENT_TINT              (1 << 11)
+#define PM8607_EVENT_GPADC0            (1 << 12)
+#define PM8607_EVENT_GPADC1            (1 << 13)
+#define PM8607_EVENT_GPADC2            (1 << 14)
+#define PM8607_EVENT_GPADC3            (1 << 15)
+#define PM8607_EVENT_AUDIO_SHORT       (1 << 16)
+#define PM8607_EVENT_PEN               (1 << 17)
+#define PM8607_EVENT_HEADSET           (1 << 18)
+#define PM8607_EVENT_HOOK              (1 << 19)
+#define PM8607_EVENT_MICIN             (1 << 20)
+#define PM8607_EVENT_CHG_TIMEOUT       (1 << 21)
+#define PM8607_EVENT_CHG_DONE          (1 << 22)
+#define PM8607_EVENT_CHG_FAULT         (1 << 23)
+
+/* bit definitions of Status Query Interface */
+#define PM8607_STATUS_CC               (1 << 3)
+#define PM8607_STATUS_PEN              (1 << 4)
+#define PM8607_STATUS_HEADSET          (1 << 5)
+#define PM8607_STATUS_HOOK             (1 << 6)
+#define PM8607_STATUS_MICIN            (1 << 7)
+#define PM8607_STATUS_ONKEY            (1 << 8)
+#define PM8607_STATUS_EXTON            (1 << 9)
+#define PM8607_STATUS_CHG              (1 << 10)
+#define PM8607_STATUS_BAT              (1 << 11)
+#define PM8607_STATUS_VBUS             (1 << 12)
+#define PM8607_STATUS_OV               (1 << 13)
+
+/* bit definitions of BUCK3 */
+#define PM8607_BUCK3_DOUBLE            (1 << 6)
+
+/* bit definitions of Misc1 */
+#define PM8607_MISC1_PI2C              (1 << 0)
+
+/* Interrupt Number in 88PM8607 */
+enum {
+       PM8607_IRQ_ONKEY = 0,
+       PM8607_IRQ_EXTON,
+       PM8607_IRQ_CHG,
+       PM8607_IRQ_BAT,
+       PM8607_IRQ_RTC,
+       PM8607_IRQ_VBAT = 8,
+       PM8607_IRQ_VCHG,
+       PM8607_IRQ_VSYS,
+       PM8607_IRQ_TINT,
+       PM8607_IRQ_GPADC0,
+       PM8607_IRQ_GPADC1,
+       PM8607_IRQ_GPADC2,
+       PM8607_IRQ_GPADC3,
+       PM8607_IRQ_AUDIO_SHORT = 16,
+       PM8607_IRQ_PEN,
+       PM8607_IRQ_HEADSET,
+       PM8607_IRQ_HOOK,
+       PM8607_IRQ_MICIN,
+       PM8607_IRQ_CHG_FAIL,
+       PM8607_IRQ_CHG_DONE,
+       PM8607_IRQ_CHG_FAULT,
+};
+
+enum {
+       PM8607_CHIP_A0 = 0x40,
+       PM8607_CHIP_A1 = 0x41,
+       PM8607_CHIP_B0 = 0x48,
+};
+
+
+struct pm8607_chip {
+       struct device           *dev;
+       struct mutex            io_lock;
+       struct i2c_client       *client;
+
+       int (*read)(struct pm8607_chip *chip, int reg, int bytes, void *dest);
+       int (*write)(struct pm8607_chip *chip, int reg, int bytes, void *src);
+
+       int                     buck3_double;   /* DVC ramp slope double */
+       unsigned char           chip_id;
+
+};
+
+#define PM8607_MAX_REGULATOR   15      /* 3 Bucks, 12 LDOs */
+
+enum {
+       GI2C_PORT = 0,
+       PI2C_PORT,
+};
+
+struct pm8607_platform_data {
+       int     i2c_port;       /* Controlled by GI2C or PI2C */
+       struct regulator_init_data *regulator[PM8607_MAX_REGULATOR];
+};
+
+extern int pm8607_reg_read(struct pm8607_chip *, int);
+extern int pm8607_reg_write(struct pm8607_chip *, int, unsigned char);
+extern int pm8607_bulk_read(struct pm8607_chip *, int, int,
+                           unsigned char *);
+extern int pm8607_bulk_write(struct pm8607_chip *, int, int,
+                            unsigned char *);
+extern int pm8607_set_bits(struct pm8607_chip *, int, unsigned char,
+                          unsigned char);
+#endif /* __LINUX_MFD_88PM8607_H */