diff mbox

[v3,4/4] ARM: EXYNOS: skip wakeup interrupt setup if pinctrl driver is used

Message ID 1345720529-32315-5-git-send-email-thomas.abraham@linaro.org
State Accepted
Commit fef05c29786fe0aa2833972b5355b58e54d52484
Headers show

Commit Message

thomas.abraham@linaro.org Aug. 23, 2012, 11:15 a.m. UTC
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.

Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
---
 arch/arm/mach-exynos/common.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

Comments

Linus Walleij Sept. 3, 2012, 11:17 a.m. UTC | #1
On Thu, Aug 23, 2012 at 1:15 PM, Thomas Abraham
<thomas.abraham@linaro.org> wrote:

> 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.
>
> Cc: Kukjin Kim <kgene.kim@samsung.com>
> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>

Acked-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 4eb39cd..715b690 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