diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1287-soft_tap.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1287-soft_tap.patch.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1287-soft_tap.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1287-soft_tap.patch.patch new file mode 100644 index 0000000000..c73dd5e8d9 --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1287-soft_tap.patch.patch @@ -0,0 +1,82 @@ +From eff39cde0d3cdd2afd5e1b4be5a8eb6cf195543e Mon Sep 17 00:00:00 2001 +From: Dima Kogan <dkogan@cds.caltech.edu> +Date: Thu, 11 Sep 2008 20:38:55 +0800 +Subject: [PATCH] soft_tap.patch + +Hi all. + +I'm seeing a behavior in my freerunner where light taps on the +touchscreen are not registered as clicks by the kernel even though the +base hardware does report clicking events. I'm seeing the kernel +generate extra "unclick" events in these cases. It looks like in the +driver, an unclick event is processed before the click event, thus +suppressing the click from ever being generated. I'm attaching a patch +that addresses this. I'm now able to type much faster on the matchbox +keyboard, even when using my fingertips instead of fingernails. + +Dima + +Signed-off-by: Dima Kogan <dkogan@cds.caltech.edu> +--- + drivers/input/touchscreen/s3c2410_ts.c | 17 +++++++++++++++++ + 1 files changed, 17 insertions(+), 0 deletions(-) + +diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c +index 9fb95c1..fc1c500 100644 +--- a/drivers/input/touchscreen/s3c2410_ts.c ++++ b/drivers/input/touchscreen/s3c2410_ts.c +@@ -118,6 +118,7 @@ struct s3c2410ts { + struct s3c2410ts_sample raw_running_avg; + int reject_threshold_vs_avg; + int flag_previous_exceeded_threshold; ++ int flag_first_touch_sent; + }; + + static struct s3c2410ts ts; +@@ -130,6 +131,7 @@ static void clear_raw_fifo(void) + ts.raw_running_avg.x = 0; + ts.raw_running_avg.y = 0; + ts.flag_previous_exceeded_threshold = 0; ++ ts.flag_first_touch_sent = 0; + } + + +@@ -153,6 +155,19 @@ static void touch_timer_fire(unsigned long data) + updown = (!(data0 & S3C2410_ADCDAT0_UPDOWN)) && + (!(data1 & S3C2410_ADCDAT0_UPDOWN)); + ++ // if we need to send an untouch event, but we haven't yet sent the ++ // touch event (this happens if the touchscreen was tapped lightly), ++ // send the touch event first ++ if (!updown && !ts.flag_first_touch_sent && ts.count != 0) { ++ input_report_abs(ts.dev, ABS_X, ts.xp >> ts.shift); ++ input_report_abs(ts.dev, ABS_Y, ts.yp >> ts.shift); ++ ++ input_report_key(ts.dev, BTN_TOUCH, 1); ++ input_report_abs(ts.dev, ABS_PRESSURE, 1); ++ input_sync(ts.dev); ++ ts.flag_first_touch_sent = 1; ++ } ++ + if (updown) { + if (ts.count != 0) { + ts.xp >>= ts.shift; +@@ -174,6 +189,7 @@ static void touch_timer_fire(unsigned long data) + input_report_key(ts.dev, BTN_TOUCH, 1); + input_report_abs(ts.dev, ABS_PRESSURE, 1); + input_sync(ts.dev); ++ ts.flag_first_touch_sent = 1; + } + + ts.xp = 0; +@@ -190,6 +206,7 @@ static void touch_timer_fire(unsigned long data) + input_report_key(ts.dev, BTN_TOUCH, 0); + input_report_abs(ts.dev, ABS_PRESSURE, 0); + input_sync(ts.dev); ++ ts.flag_first_touch_sent = 0; + + writel(WAIT4INT(0), base_addr+S3C2410_ADCTSC); + } +-- +1.5.6.5 + |