plat-nomadik: get rid of unused GPIO PM code

The NOMADIK_GPIO_PM config option is disabled by default, not user visible,
and never selected by any other option: the code is therefore unused. The
GPIO registers need not be saved and restored since their values are
preserved when vAPE (on DB8500) is powered down.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 3 insertions, 79 deletions

diff --git a/arch/arm/plat-nomadik/Kconfig b/arch/arm/plat-nomadik/Kconfig
index ad25c963d437..187f4e84bb22 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 acc9de213246..5e6653f63286 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)