Input: tsc2007 - add poll_delay parameter to platform data

Depending on the quality of the touch panel, the time for the X-, X+, Y-
and Y+ inputs to settle may vary. The poll_delay parameter can be used
to override the default of 1 millisecond.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 8c48a91a6783..faa82ddb014b 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -27,7 +27,6 @@
 #include <linux/i2c.h>
 #include <linux/i2c/tsc2007.h>
 
-#define TS_POLL_DELAY                   1 /* ms delay between samples */
 #define TS_POLL_PERIOD                  1 /* ms delay between samples */
 
 #define TSC2007_MEASURE_TEMP0           (0x0 << 4)
@@ -76,6 +75,7 @@ struct tsc2007 {
         u16                     model;
         u16                     x_plate_ohms;
         u16                     max_rt;
+        unsigned long           poll_delay;
 
         bool                    pendown;
         int                     irq;
@@ -242,7 +242,7 @@ static irqreturn_t tsc2007_irq(int irq, void *handle)
         if (!ts->get_pendown_state || likely(ts->get_pendown_state())) {
                 disable_irq_nosync(ts->irq);
                 schedule_delayed_work(&ts->work,
-                                      msecs_to_jiffies(TS_POLL_DELAY));
+                                      msecs_to_jiffies(ts->poll_delay));
         }
 
         if (ts->clear_penirq)
@@ -296,6 +296,7 @@ static int __devinit tsc2007_probe(struct i2c_client *client,
         ts->model             = pdata->model;
         ts->x_plate_ohms      = pdata->x_plate_ohms;
         ts->max_rt            = pdata->max_rt ? : MAX_12BIT;
+        ts->poll_delay        = pdata->poll_delay ? : 1;
         ts->get_pendown_state = pdata->get_pendown_state;
         ts->clear_penirq      = pdata->clear_penirq;