[PATCH 2/2] input: gpio_keys: add pinctrl consumer

[Jean-Christophe PLAGNIOL-VILLARD]

If no pinctrl available just report a warning as some architecture may not
need to do anything.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: linux-input at vger.kernel.org
---
 drivers/input/keyboard/gpio_keys.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 6a68041..c0432fe 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -29,6 +29,7 @@
 #include <linux/of_platform.h>
 #include <linux/of_gpio.h>
 #include <linux/spinlock.h>
+#include <linux/pinctrl/consumer.h>
 
 struct gpio_button_data {
 	const struct gpio_keys_button *button;
@@ -666,6 +667,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
 	struct input_dev *input;
 	int i, error;
 	int wakeup = 0;
+	struct pinctrl *pinctrl;
 
 	if (!pdata) {
 		pdata = gpio_keys_get_devtree_pdata(dev);
@@ -673,6 +675,15 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
 			return PTR_ERR(pdata);
 	}
 
+	pinctrl = devm_pinctrl_get_select_default(dev);
+	if (IS_ERR(pinctrl)) {
+		error = PTR_ERR(pinctrl);
+		if (error == -EPROBE_DEFER)
+			return error;
+
+		dev_warn(dev, "No pinctrl provided\n");
+	}
+
 	ddata = kzalloc(sizeof(struct gpio_keys_drvdata) +
 			pdata->nbuttons * sizeof(struct gpio_button_data),
 			GFP_KERNEL);
-- 
1.7.10.4