From 4eb6f91b95e7618eae0103b6cba7c7f01f9d40f3 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 9 Mar 2010 20:38:47 -0800 Subject: Input: ad7877 - increase pen up imeout The time interval between consecutive interrupts depends on a number of tunables: first_conversion_delay, acquisition_time, averaging and foremost the pen_down_acc_interval. Since the mod_timer() action for the PEN UP event happens in the spi_async() callback function, latencies incurred by the spi bus drivers also need to be taken into account. So all in all, give the PEN UP event a bit more wiggle room and increase timeout to 100ms. Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/ad7877.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/input') diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index eb83939c705e..e019d53d1ab4 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c @@ -46,7 +46,7 @@ #include #include -#define TS_PEN_UP_TIMEOUT msecs_to_jiffies(50) +#define TS_PEN_UP_TIMEOUT msecs_to_jiffies(100) #define MAX_SPI_FREQ_HZ 20000000 #define MAX_12BIT ((1<<12)-1) -- cgit v1.2.2