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 f02028e..78e5d9a 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -955,7 +955,8 @@
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 @@
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 c64de9d..2f694f3 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -46,8 +46,9 @@
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);