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-rw-r--r--arch/arm/mach-exynos/common.c26
1 files changed, 26 insertions, 0 deletions
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