Input: ads7846 - enable pendown GPIO debounce time setting

Some platforms need the pendown GPIO debounce time setting programmed.
Since the pendown GPIO is handled by the driver, the debounce time
should also be handled along with the pendown GPIO request.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index f02028ec3db6a6384dc194e7633ee12e8bbb7685..78e5d9ab0ba7fd991e55cff240257248f42b7ba1 100644 (file)
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -955,7 +955,8 @@ static int ads7846_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(ads7846_pm, ads7846_suspend, ads7846_resume);
 
-static int __devinit ads7846_setup_pendown(struct spi_device *spi, struct ads7846 *ts)
+static int __devinit ads7846_setup_pendown(struct spi_device *spi,
+                                          struct ads7846 *ts)
 {
        struct ads7846_platform_data *pdata = spi->dev.platform_data;
        int err;
@@ -981,6 +982,9 @@ static int __devinit ads7846_setup_pendown(struct spi_device *spi, struct ads784
 
                ts->gpio_pendown = pdata->gpio_pendown;
 
+               if (pdata->gpio_pendown_debounce)
+                       gpio_set_debounce(pdata->gpio_pendown,
+                                         pdata->gpio_pendown_debounce);
        } else {
                dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n");
                return -EINVAL;

diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index c64de9dd7631bb44232eeca7d8080c62521c5b1e..2f694f3846a9ad1a5d052e96d5f68cd9a152c313 100644 (file)
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -46,8 +46,9 @@ struct ads7846_platform_data {
        u16     debounce_rep;           /* additional consecutive good readings
                                         * required after the first two */
        int     gpio_pendown;           /* the GPIO used to decide the pendown
-                                        * state if get_pendown_state == NULL
-                                        */
+                                        * state if get_pendown_state == NULL */
+       int     gpio_pendown_debounce;  /* platform specific debounce time for
+                                        * the gpio_pendown */
        int     (*get_pendown_state)(void);
        int     (*filter_init)  (const struct ads7846_platform_data *pdata,
                                 void **filter_data);