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Diffstat (limited to 'arch/arm/plat-samsung/gpio.c')
-rw-r--r--arch/arm/plat-samsung/gpio.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/arch/arm/plat-samsung/gpio.c b/arch/arm/plat-samsung/gpio.c
deleted file mode 100644
index 7743c4b..0000000
--- a/arch/arm/plat-samsung/gpio.c
+++ /dev/null
@@ -1,167 +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 <linux/spinlock.h>
-
-#include <plat/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;
-
- s3c_gpio_lock(ourchip, flags);
-
- con = __raw_readl(base + 0x00);
- con &= ~(3 << (offset * 2));
-
- __raw_writel(con, base + 0x00);
-
- s3c_gpio_unlock(ourchip, 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;
-
- s3c_gpio_lock(ourchip, 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);
-
- s3c_gpio_unlock(ourchip, 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;
-
- s3c_gpio_lock(ourchip, flags);
-
- dat = __raw_readl(base + 0x04);
- dat &= ~(1 << offset);
- if (value)
- dat |= 1 << offset;
- __raw_writel(dat, base + 0x04);
-
- s3c_gpio_unlock(ourchip, 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);
-
- spin_lock_init(&chip->lock);
-
- 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);
-}
-
-int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
-{
- struct s3c_gpio_chip *s3c_chip = container_of(chip,
- struct s3c_gpio_chip, chip);
-
- return s3c_chip->irq_base + offset;
-}
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