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-rw-r--r--arch/arm/plat-nomadik/Kconfig6
-rw-r--r--arch/arm/plat-nomadik/gpio.c76
2 files changed, 3 insertions, 79 deletions
diff --git a/arch/arm/plat-nomadik/Kconfig b/arch/arm/plat-nomadik/Kconfig
index ad25c963d43..187f4e84bb2 100644
--- a/arch/arm/plat-nomadik/Kconfig
+++ b/arch/arm/plat-nomadik/Kconfig
@@ -25,10 +25,4 @@ config NOMADIK_GPIO
help
Support for the Nomadik GPIO controller.
-config NOMADIK_GPIO_PM
- bool
- depends on NOMADIK_GPIO && PM
- help
- Support PM for the Nomadik GPIO controller.
-
endif
diff --git a/arch/arm/plat-nomadik/gpio.c b/arch/arm/plat-nomadik/gpio.c
index acc9de21324..5e6653f6328 100644
--- a/arch/arm/plat-nomadik/gpio.c
+++ b/arch/arm/plat-nomadik/gpio.c
@@ -35,18 +35,6 @@
* Symbols in this file are called "nmk_gpio" for "nomadik gpio"
*/
-static const u32 backup_regs[] = {
- NMK_GPIO_PDIS,
- NMK_GPIO_DIR,
- NMK_GPIO_AFSLA,
- NMK_GPIO_AFSLB,
- NMK_GPIO_SLPC,
- NMK_GPIO_RIMSC,
- NMK_GPIO_FIMSC,
- NMK_GPIO_RWIMSC,
- NMK_GPIO_FWIMSC,
-};
-
#define NMK_GPIO_PER_CHIP 32
struct nmk_gpio_chip {
@@ -62,9 +50,6 @@ struct nmk_gpio_chip {
/* Keep track of configured edges */
u32 edge_rising;
u32 edge_falling;
- u32 backup[ARRAY_SIZE(backup_regs)];
- /* Bitmap, 1 = pull up, 0 = pull down */
- u32 pull;
};
static struct nmk_gpio_chip *
@@ -117,13 +102,10 @@ static void __nmk_gpio_set_pull(struct nmk_gpio_chip *nmk_chip,
pdis &= ~bit;
writel(pdis, nmk_chip->addr + NMK_GPIO_PDIS);
- if (pull == NMK_GPIO_PULL_UP) {
- nmk_chip->pull |= bit;
+ if (pull == NMK_GPIO_PULL_UP)
writel(bit, nmk_chip->addr + NMK_GPIO_DATS);
- } else if (pull == NMK_GPIO_PULL_DOWN) {
- nmk_chip->pull &= ~bit;
+ else if (pull == NMK_GPIO_PULL_DOWN)
writel(bit, nmk_chip->addr + NMK_GPIO_DATC);
- }
}
static void __nmk_gpio_make_input(struct nmk_gpio_chip *nmk_chip,
@@ -991,64 +973,12 @@ out:
return ret;
}
-#ifdef CONFIG_NOMADIK_GPIO_PM
-static int nmk_gpio_pm(struct platform_device *dev, bool suspend)
-{
- struct nmk_gpio_chip *nmk_chip = platform_get_drvdata(dev);
- int i;
- u32 dir;
- u32 dat;
-
- for (i = 0; i < ARRAY_SIZE(backup_regs); i++) {
- if (suspend)
- nmk_chip->backup[i] = readl(nmk_chip->addr +
- backup_regs[i]);
- else
- writel(nmk_chip->backup[i],
- nmk_chip->addr + backup_regs[i]);
- }
-
- if (!suspend) {
- /*
- * Restore pull-up and pull-down on inputs and
- * outputs.
- */
- dir = readl(nmk_chip->addr + NMK_GPIO_DIR);
- dat = readl(nmk_chip->addr + NMK_GPIO_DAT);
-
- writel((nmk_chip->pull & ~dir) |
- (dat & dir),
- nmk_chip->addr + NMK_GPIO_DATS);
-
- writel((~nmk_chip->pull & ~dir) |
- (~dat & dir),
- nmk_chip->addr + NMK_GPIO_DATC);
- }
- return 0;
-}
-
-static int nmk_gpio_suspend(struct platform_device *dev, pm_message_t state)
-{
- return nmk_gpio_pm(dev, true);
-}
-
-static int nmk_gpio_resume(struct platform_device *dev)
-{
- return nmk_gpio_pm(dev, false);
-}
-#else
-#define nmk_gpio_suspend NULL
-#define nmk_gpio_resume NULL
-#endif
-
static struct platform_driver nmk_gpio_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "gpio",
- },
+ },
.probe = nmk_gpio_probe,
- .suspend = nmk_gpio_suspend,
- .resume = nmk_gpio_resume,
};
static int __init nmk_gpio_init(void)