Input: tsc2007 - add poll_period parameter to platform data

This new parameter allows the polling frequency to be configured while
keeping the default of once every millisecond.

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

2 files changed, 4 insertions, 3 deletions

diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index faa82ddb014b..87c40c79f71e 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -27,8 +27,6 @@
 #include <linux/i2c.h>
 #include <linux/i2c/tsc2007.h>
 
-#define TS_POLL_PERIOD                  1 /* ms delay between samples */
-
 #define TSC2007_MEASURE_TEMP0           (0x0 << 4)
 #define TSC2007_MEASURE_AUX             (0x2 << 4)
 #define TSC2007_MEASURE_TEMP1           (0x4 << 4)
@@ -76,6 +74,7 @@ struct tsc2007 {
         u16                     x_plate_ohms;
         u16                     max_rt;
         unsigned long           poll_delay;
+        unsigned long           poll_period;
 
         bool                    pendown;
         int                     irq;
@@ -230,7 +229,7 @@ static void tsc2007_work(struct work_struct *work)
  out:
         if (ts->pendown || debounced)
                 schedule_delayed_work(&ts->work,
-                                      msecs_to_jiffies(TS_POLL_PERIOD));
+                                      msecs_to_jiffies(ts->poll_period));
         else
                 enable_irq(ts->irq);
 }
@@ -297,6 +296,7 @@ static int __devinit tsc2007_probe(struct i2c_client *client,
         ts->x_plate_ohms      = pdata->x_plate_ohms;
         ts->max_rt            = pdata->max_rt ? : MAX_12BIT;
         ts->poll_delay        = pdata->poll_delay ? : 1;
+        ts->poll_period       = pdata->poll_period ? : 1;
         ts->get_pendown_state = pdata->get_pendown_state;
         ts->clear_penirq      = pdata->clear_penirq;
 
diff --git a/include/linux/i2c/tsc2007.h b/include/linux/i2c/tsc2007.h
index 342b130a0a98..a51dac081aca 100644
--- a/include/linux/i2c/tsc2007.h
+++ b/include/linux/i2c/tsc2007.h
@@ -9,6 +9,7 @@ struct tsc2007_platform_data {
         u16     max_rt; /* max. resistance above which samples are ignored */
         unsigned long poll_delay; /* delay (in ms) after pen-down event
                                      before polling starts */
+        unsigned long poll_period; /* time (in ms) between samples */
 
         int     (*get_pendown_state)(void);
         void    (*clear_penirq)(void);          /* If needed, clear 2nd level