ARM: SAMSUNG: Move gpiolib support in gpio.c to plat-samsung

Move the gpio.c code containing the core gpiolib and GPIO support to
plat-samsung from plat-s3c as it is used by all current Samsung SoCs.

Note, we didn't move this to gpiolib.c as it contains code that is not
strictly for gpiolib support and the 4bit code is already called gpiolib.c
so make the change easier by not renaming both files in one go.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index ac12ba526f776963196dce03b4e08ea25bd4568a..20cb335aa75b21c1a6bd1716f216e79c21351f18 100644 (file)
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -13,7 +13,6 @@ obj-                          :=
 
 obj-y                          += init.o
 obj-y                          += time.o
-obj-y                          += gpio.o
 
 # DMA support
 

diff --git a/arch/arm/plat-s3c/gpio.c b/arch/arm/plat-s3c/gpio.c
deleted file mode 100644 (file)
index 5ff24e0..0000000
--- a/arch/arm/plat-s3c/gpio.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/* linux/arch/arm/plat-s3c/gpio.c
- *
- * Copyright 2008 Simtec Electronics
- *     Ben Dooks <ben@simtec.co.uk>
- *     http://armlinux.simtec.co.uk/
- *
- * S3C series GPIO core
- *
- * 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/init.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-
-#include <mach/gpio-core.h>
-
-#ifdef CONFIG_S3C_GPIO_TRACK
-struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
-
-static __init void s3c_gpiolib_track(struct s3c_gpio_chip *chip)
-{
-       unsigned int gpn;
-       int i;
-
-       gpn = chip->chip.base;
-       for (i = 0; i < chip->chip.ngpio; i++, gpn++) {
-               BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios));
-               s3c_gpios[gpn] = chip;
-       }
-}
-#endif /* CONFIG_S3C_GPIO_TRACK */
-
-/* Default routines for controlling GPIO, based on the original S3C24XX
- * GPIO functions which deal with the case where each gpio bank of the
- * chip is as following:
- *
- * base + 0x00: Control register, 2 bits per gpio
- *             gpio n: 2 bits starting at (2*n)
- *             00 = input, 01 = output, others mean special-function
- * base + 0x04: Data register, 1 bit per gpio
- *             bit n: data bit n
-*/
-
-static int s3c_gpiolib_input(struct gpio_chip *chip, unsigned offset)
-{
-       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-       void __iomem *base = ourchip->base;
-       unsigned long flags;
-       unsigned long con;
-
-       local_irq_save(flags);
-
-       con = __raw_readl(base + 0x00);
-       con &= ~(3 << (offset * 2));
-
-       __raw_writel(con, base + 0x00);
-
-       local_irq_restore(flags);
-       return 0;
-}
-
-static int s3c_gpiolib_output(struct gpio_chip *chip,
-                             unsigned offset, int value)
-{
-       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-       void __iomem *base = ourchip->base;
-       unsigned long flags;
-       unsigned long dat;
-       unsigned long con;
-
-       local_irq_save(flags);
-
-       dat = __raw_readl(base + 0x04);
-       dat &= ~(1 << offset);
-       if (value)
-               dat |= 1 << offset;
-       __raw_writel(dat, base + 0x04);
-
-       con = __raw_readl(base + 0x00);
-       con &= ~(3 << (offset * 2));
-       con |= 1 << (offset * 2);
-
-       __raw_writel(con, base + 0x00);
-       __raw_writel(dat, base + 0x04);
-
-       local_irq_restore(flags);
-       return 0;
-}
-
-static void s3c_gpiolib_set(struct gpio_chip *chip,
-                           unsigned offset, int value)
-{
-       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-       void __iomem *base = ourchip->base;
-       unsigned long flags;
-       unsigned long dat;
-
-       local_irq_save(flags);
-
-       dat = __raw_readl(base + 0x04);
-       dat &= ~(1 << offset);
-       if (value)
-               dat |= 1 << offset;
-       __raw_writel(dat, base + 0x04);
-
-       local_irq_restore(flags);
-}
-
-static int s3c_gpiolib_get(struct gpio_chip *chip, unsigned offset)
-{
-       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
-       unsigned long val;
-
-       val = __raw_readl(ourchip->base + 0x04);
-       val >>= offset;
-       val &= 1;
-
-       return val;
-}
-
-__init void s3c_gpiolib_add(struct s3c_gpio_chip *chip)
-{
-       struct gpio_chip *gc = &chip->chip;
-       int ret;
-
-       BUG_ON(!chip->base);
-       BUG_ON(!gc->label);
-       BUG_ON(!gc->ngpio);
-
-       if (!gc->direction_input)
-               gc->direction_input = s3c_gpiolib_input;
-       if (!gc->direction_output)
-               gc->direction_output = s3c_gpiolib_output;
-       if (!gc->set)
-               gc->set = s3c_gpiolib_set;
-       if (!gc->get)
-               gc->get = s3c_gpiolib_get;
-
-#ifdef CONFIG_PM
-       if (chip->pm != NULL) {
-               if (!chip->pm->save || !chip->pm->resume)
-                       printk(KERN_ERR "gpio: %s has missing PM functions\n",
-                              gc->label);
-       } else
-               printk(KERN_ERR "gpio: %s has no PM function\n", gc->label);
-#endif
-
-       /* gpiochip_add() prints own failure message on error. */
-       ret = gpiochip_add(gc);
-       if (ret >= 0)
-               s3c_gpiolib_track(chip);
-}

diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 94fe6ea362be20d6fb6ce347575d89bc2aac21f0..27d5bfb60b2ebdf1b1828b18b66987e5624b3498 100644 (file)
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -13,6 +13,7 @@ obj-                          :=
 
 obj-y                          += clock.o
 obj-y                          += pwm-clock.o
+obj-y                          += gpio.o
 obj-y                          += gpio-config.o
 
 obj-$(CONFIG_SAMSUNG_GPIOLIB_4BIT)     += gpiolib.o

diff --git a/arch/arm/plat-samsung/gpio.c b/arch/arm/plat-samsung/gpio.c
new file mode 100644 (file)
index 0000000..5ff24e0
--- /dev/null
+++ b/arch/arm/plat-samsung/gpio.c
@@ -0,0 +1,156 @@
+/* linux/arch/arm/plat-s3c/gpio.c
+ *
+ * Copyright 2008 Simtec Electronics
+ *     Ben Dooks <ben@simtec.co.uk>
+ *     http://armlinux.simtec.co.uk/
+ *
+ * S3C series GPIO core
+ *
+ * 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/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/gpio-core.h>
+
+#ifdef CONFIG_S3C_GPIO_TRACK
+struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
+
+static __init void s3c_gpiolib_track(struct s3c_gpio_chip *chip)
+{
+       unsigned int gpn;
+       int i;
+
+       gpn = chip->chip.base;
+       for (i = 0; i < chip->chip.ngpio; i++, gpn++) {
+               BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios));
+               s3c_gpios[gpn] = chip;
+       }
+}
+#endif /* CONFIG_S3C_GPIO_TRACK */
+
+/* Default routines for controlling GPIO, based on the original S3C24XX
+ * GPIO functions which deal with the case where each gpio bank of the
+ * chip is as following:
+ *
+ * base + 0x00: Control register, 2 bits per gpio
+ *             gpio n: 2 bits starting at (2*n)
+ *             00 = input, 01 = output, others mean special-function
+ * base + 0x04: Data register, 1 bit per gpio
+ *             bit n: data bit n
+*/
+
+static int s3c_gpiolib_input(struct gpio_chip *chip, unsigned offset)
+{
+       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
+       void __iomem *base = ourchip->base;
+       unsigned long flags;
+       unsigned long con;
+
+       local_irq_save(flags);
+
+       con = __raw_readl(base + 0x00);
+       con &= ~(3 << (offset * 2));
+
+       __raw_writel(con, base + 0x00);
+
+       local_irq_restore(flags);
+       return 0;
+}
+
+static int s3c_gpiolib_output(struct gpio_chip *chip,
+                             unsigned offset, int value)
+{
+       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
+       void __iomem *base = ourchip->base;
+       unsigned long flags;
+       unsigned long dat;
+       unsigned long con;
+
+       local_irq_save(flags);
+
+       dat = __raw_readl(base + 0x04);
+       dat &= ~(1 << offset);
+       if (value)
+               dat |= 1 << offset;
+       __raw_writel(dat, base + 0x04);
+
+       con = __raw_readl(base + 0x00);
+       con &= ~(3 << (offset * 2));
+       con |= 1 << (offset * 2);
+
+       __raw_writel(con, base + 0x00);
+       __raw_writel(dat, base + 0x04);
+
+       local_irq_restore(flags);
+       return 0;
+}
+
+static void s3c_gpiolib_set(struct gpio_chip *chip,
+                           unsigned offset, int value)
+{
+       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
+       void __iomem *base = ourchip->base;
+       unsigned long flags;
+       unsigned long dat;
+
+       local_irq_save(flags);
+
+       dat = __raw_readl(base + 0x04);
+       dat &= ~(1 << offset);
+       if (value)
+               dat |= 1 << offset;
+       __raw_writel(dat, base + 0x04);
+
+       local_irq_restore(flags);
+}
+
+static int s3c_gpiolib_get(struct gpio_chip *chip, unsigned offset)
+{
+       struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip);
+       unsigned long val;
+
+       val = __raw_readl(ourchip->base + 0x04);
+       val >>= offset;
+       val &= 1;
+
+       return val;
+}
+
+__init void s3c_gpiolib_add(struct s3c_gpio_chip *chip)
+{
+       struct gpio_chip *gc = &chip->chip;
+       int ret;
+
+       BUG_ON(!chip->base);
+       BUG_ON(!gc->label);
+       BUG_ON(!gc->ngpio);
+
+       if (!gc->direction_input)
+               gc->direction_input = s3c_gpiolib_input;
+       if (!gc->direction_output)
+               gc->direction_output = s3c_gpiolib_output;
+       if (!gc->set)
+               gc->set = s3c_gpiolib_set;
+       if (!gc->get)
+               gc->get = s3c_gpiolib_get;
+
+#ifdef CONFIG_PM
+       if (chip->pm != NULL) {
+               if (!chip->pm->save || !chip->pm->resume)
+                       printk(KERN_ERR "gpio: %s has missing PM functions\n",
+                              gc->label);
+       } else
+               printk(KERN_ERR "gpio: %s has no PM function\n", gc->label);
+#endif
+
+       /* gpiochip_add() prints own failure message on error. */
+       ret = gpiochip_add(gc);
+       if (ret >= 0)
+               s3c_gpiolib_track(chip);
+}