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.
Changes in v2:
- Move poll_delay parameter to platform data.
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Kwangwoo Lee <kwangwoo.lee@xxxxxxxxx>
Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
---
drivers/input/touchscreen/tsc2007.c | 5 +++--
include/linux/i2c/tsc2007.h | 2 ++
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 8c48a91..faa82dd 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;
diff --git a/include/linux/i2c/tsc2007.h b/include/linux/i2c/tsc2007.h
index d95f113..342b130 100644
--- a/include/linux/i2c/tsc2007.h
+++ b/include/linux/i2c/tsc2007.h
@@ -7,6 +7,8 @@ struct tsc2007_platform_data {
u16 model; /* 2007. */
u16 x_plate_ohms;
u16 max_rt; /* max. resistance above which samples are ignored */
+ unsigned long poll_delay; /* delay (in ms) after pen-down event
+ before polling starts */
int (*get_pendown_state)(void);
void (*clear_penirq)(void); /* If needed, clear 2nd level
--
1.7.5.1
--
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