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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>
hifive-unleashed-5.1
Thierry Reding 2011-05-17 09:31:33 -07:00 committed by Dmitry Torokhov
parent 84005eb5ea
commit 2d137c7ed2
2 changed files with 5 additions and 2 deletions
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5
drivers/input/touchscreen/tsc2007.c
View File

@ -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;

2
include/linux/i2c/tsc2007.h
View File

@ -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