diff options
| author | Nicolas Boichat <drinkcat@google.com> | 2017-07-22 06:34:10 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-07-31 07:38:06 -0700 |
| commit | 043c55026242d0b485a400f0ac4020d373e19673 (patch) | |
| tree | c2a0746d05783dc1436a96cbb1f8c30948a22cd0 /driver/touchpad_elan.c | |
| parent | cb06c593b401b8879d8c89e38863789c7385af98 (diff) | |
| download | chrome-ec-043c55026242d0b485a400f0ac4020d373e19673.tar.gz | |
chip/stm32/usb_hid_touchpad: Widen pressure field to 10 bits
id only really needs 4 bits (16 touch events should be more than
enough), so we can steal 2 bits from that field.
We also reorder the fields to make sure that width/x are aligned
on 8-bit boundary.
BRANCH=none
BUG=b:63936194
TEST=Flash hammer, touchpad works, ABS_PRESSURE > 255 is reported
when a palm is pressed on the touchpad.
Change-Id: I1abf1bf53cc9dd998082cea5dc7cd3be17f99ec6
Reviewed-on: https://chromium-review.googlesource.com/583297
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Chun-ta Lin <itspeter@chromium.org>
Reviewed-by: KT Liao <kt.liao@emc.com.tw>
Diffstat (limited to 'driver/touchpad_elan.c')
| -rw-r--r-- | driver/touchpad_elan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/driver/touchpad_elan.c b/driver/touchpad_elan.c index f0d3e6c9c1..3c8d5abeae 100644 --- a/driver/touchpad_elan.c +++ b/driver/touchpad_elan.c @@ -156,7 +156,7 @@ static int elan_tp_read_report(void) width = MIN(4095, width * elan_tp_params.width_x); height = MIN(4095, height * elan_tp_params.width_y); - pressure = MIN(255, pressure); + pressure = MIN(1023, pressure); report.finger[ri].tip = 1; report.finger[ri].inrange = 1; |