From fef05c29786fe0aa2833972b5355b58e54d52484 Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Fri, 7 Sep 2012 06:07:40 +0900 Subject: [PATCH] ARM: EXYNOS: skip wakeup interrupt setup if pinctrl driver is used Pinctrl driver includes support for configuring the external wakeup interrupts. On exynos platforms that use pinctrl driver, the setup of wakeup interrupts in the exynos platform code can be skipped. Signed-off-by: Thomas Abraham Acked-by: Linus Walleij Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/common.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 4eb39cdf75ea..715b690e5009 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -980,6 +980,32 @@ static int __init exynos_init_irq_eint(void) { int irq; +#ifdef CONFIG_PINCTRL_SAMSUNG + /* + * The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf + * functionality along with support for external gpio and wakeup + * interrupts. If the samsung pinctrl driver is enabled and includes + * the wakeup interrupt support, then the setting up external wakeup + * interrupts here can be skipped. This check here is temporary to + * allow exynos4 platforms that do not use Samsung pinctrl driver to + * co-exist with platforms that do. When all of the Samsung Exynos4 + * platforms switch over to using the pinctrl driver, the wakeup + * interrupt support code here can be completely removed. + */ + struct device_node *pctrl_np, *wkup_np; + const char *pctrl_compat = "samsung,pinctrl-exynos4210"; + const char *wkup_compat = "samsung,exynos4210-wakeup-eint"; + + for_each_compatible_node(pctrl_np, NULL, pctrl_compat) { + if (of_device_is_available(pctrl_np)) { + wkup_np = of_find_compatible_node(pctrl_np, NULL, + wkup_compat); + if (wkup_np) + return -ENODEV; + } + } +#endif + if (soc_is_exynos5250()) exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K); else -- 2.39.2