Input: tsc2007 - debounce pressure measurement

When the controller signals a pen-down event via the platform-specific
GPIO, while the sample values indicate an invalid measurement, the
measurement needs to be repeated.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 80467f26233..df4ae354969 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -156,6 +156,7 @@ static void tsc2007_work(struct work_struct *work)
 {
         struct tsc2007 *ts =
                 container_of(to_delayed_work(work), struct tsc2007, work);
+        bool debounced = false;
         struct ts_event tc;
         u32 rt;
 
@@ -191,6 +192,7 @@ static void tsc2007_work(struct work_struct *work)
                  * repeat at least once more the measurement.
                  */
                 dev_dbg(&ts->client->dev, "ignored pressure %d\n", rt);
+                debounced = true;
                 goto out;
 
         }
@@ -225,7 +227,7 @@ static void tsc2007_work(struct work_struct *work)
         }
 
  out:
-        if (ts->pendown)
+        if (ts->pendown || debounced)
                 schedule_delayed_work(&ts->work,
                                       msecs_to_jiffies(TS_POLL_PERIOD));
         else