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| author |   Michael Hennerich <michael.hennerich@analog.com> | 2010-03-09 20:38:47 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-03-09 22:13:30 -0800 |
| commit | 4eb6f91b95e7618eae0103b6cba7c7f01f9d40f3 (patch) | |
| tree | a668ba8445ba7cee4ef243684de51ac7e79c91ff /drivers/input/touchscreen/ad7877.c | |
| parent | Input: ads7846 - add support for AD7843 parts (diff) | |
| download | linux-dev-4eb6f91b95e7618eae0103b6cba7c7f01f9d40f3.tar.xz linux-dev-4eb6f91b95e7618eae0103b6cba7c7f01f9d40f3.zip | |
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 <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/touchscreen/ad7877.c')
| -rw-r--r-- | drivers/input/touchscreen/ad7877.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 <linux/spi/ad7877.h> #include <asm/irq.h> -#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) |