[PATCH] Send pen-up events faster (side effect: improve illume keyboard responsiveness)
arhuaco at freaks-unidos.net
Thu Jan 29 10:48:59 CET 2009
From: Nelson Castillo <arhuaco at freaks-unidos.net>
We were waiting 60ms before reporting a pen-up event to avoid
jitter. Now we wait 8ms (actually 5 with HZ == 200).
Thanks to Marco Trevisan for testing and pointing out that there was a
problem that could be spotted with the illume keyboard.
Note that I used the Terminal mode of the keyboard (no dictionary)
I also used touch_test.py and the jitter doesn't seem to be an
issue when drawing lines with the finger.
Reported-by: Marco Trevisan (Treviño) <mail at 3v1n0.net>
Signed-off-by: Nelson Castillo <arhuaco at freaks-unidos.net>
drivers/input/touchscreen/s3c2410_ts.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index 1a930a2..ea0777c 100644
@@ -96,7 +96,7 @@ MODULE_LICENSE("GPL");
static char *s3c2410ts_name = "s3c2410 TouchScreen";
-#define TS_RELEASE_TIMEOUT (HZ >> 4) /* ~ 60 milliseconds */
+#define TS_RELEASE_TIMEOUT (HZ >> 7 ? HZ >> 7 : 1) /* 8ms (5ms if HZ is 200) */
#define TS_EVENT_FIFO_SIZE (2 << 6) /* must be a power of 2 */
#define TS_STATE_STANDBY 0 /* initial state */
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