[PATCH v3 2/8] drivers:input:tsc2007: send pendown and penup only once like ads7846(+tsc2046) driver does

H. Nikolaus Schaller
2016-09-23T12:41:10Z

this should reduce unnecessary input events.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
drivers/input/touchscreen/tsc2007.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 9a11509..e9d5086 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -94,6 +94,7 @@ struct tsc2007 {

wait_queue_head_t wait;
bool stopped;
+ bool pendown;

int (*get_pendown_state)(struct device *);
void (*clear_penirq)(void);
@@ -254,9 +255,13 @@ static irqreturn_t tsc2007_soft_irq(int irq, void *handle)

dev_dbg(&ts->client->dev, "UP\n");

- input_report_key(input, BTN_TOUCH, 0);
- input_report_abs(input, ABS_PRESSURE, 0);
- input_sync(input);
+ if (ts->pendown) {
+ input_report_key(input, BTN_TOUCH, 0);
+ input_report_abs(input, ABS_PRESSURE, 0);
+ input_sync(input);
+
+ ts->pendown = false;
+ }

if (ts->clear_penirq)
ts->clear_penirq();
--
2.7.3