extcon: gpio: Use gpio driver/chip debounce if supported

This patch use gpio_set_debounce() API provided from gpiolib if SoC or device
driver with gpio support gpio_set_debounce() function.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 6368a0f3ae6dc43748ab7b3295ee274123bdbd07..862743bc825f84ccce954d0edfde2d4df8403208 100644 (file)
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -100,7 +100,13 @@ static int gpio_extcon_probe(struct platform_device *pdev)
        extcon_data->state_off = pdata->state_off;
        if (pdata->state_on && pdata->state_off)
                extcon_data->edev.print_state = extcon_gpio_print_state;
-       extcon_data->debounce_jiffies = msecs_to_jiffies(pdata->debounce);
+       if (pdata->debounce) {
+               ret = gpio_set_debounce(extcon_data->gpio,
+                                       pdata->debounce * 1000);
+               if (ret < 0)
+                       extcon_data->debounce_jiffies =
+                               msecs_to_jiffies(pdata->debounce);
+       }
 
        ret = extcon_dev_register(&extcon_data->edev, &pdev->dev);
        if (ret < 0)