diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2010-03-09 23:38:47 -0500 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-03-10 01:13:30 -0500 |
| commit | 4eb6f91b95e7618eae0103b6cba7c7f01f9d40f3 (patch) | |
| tree | a668ba8445ba7cee4ef243684de51ac7e79c91ff | |
| parent | 06a09124b5ec65f81df66c56695d9a9ae04a0114 (diff) | |
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>
| -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 @@ | |||
| 46 | #include <linux/spi/ad7877.h> | 46 | #include <linux/spi/ad7877.h> |
| 47 | #include <asm/irq.h> | 47 | #include <asm/irq.h> |
| 48 | 48 | ||
| 49 | #define TS_PEN_UP_TIMEOUT msecs_to_jiffies(50) | 49 | #define TS_PEN_UP_TIMEOUT msecs_to_jiffies(100) |
| 50 | 50 | ||
| 51 | #define MAX_SPI_FREQ_HZ 20000000 | 51 | #define MAX_SPI_FREQ_HZ 20000000 |
| 52 | #define MAX_12BIT ((1<<12)-1) | 52 | #define MAX_12BIT ((1<<12)-1) |