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Input: wacom - handle 1024 pressure levels in wacom_tpc_pen 

Some tablet PC sensors (e.g. the 0xEC found in the Thinkpad Yoga) report
more than 256 pressure levels and will experience wraparound unless the
full range is read.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Aaron Skomra <Aaron.Skomra@wacom.com>
Reviewed-by: Carl Worth <cworth@cworth.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Jason Gerecke 2014-04-19 13:51:41 -07:00 committed by Dmitry Torokhov
parent 74b634178e
commit 38a1807bad
1 changed files with 1 additions and 1 deletions
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2
drivers/input/tablet/wacom_wac.c
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@ -1087,7 +1087,7 @@ static int wacom_tpc_pen(struct wacom_wac *wacom)
input_report_key(input, BTN_STYLUS2, data[1] & 0x10);
input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]);
input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x03) << 8) | data[6]);
input_report_key(input, BTN_TOUCH, data[1] & 0x05);
input_report_key(input, wacom->tool[0], prox);
return 1;