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authorJason Gerecke <killertofu@gmail.com>2014-04-19 13:51:41 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-04-19 13:57:35 -0700
commit38a1807badd26d413e8f2b0393a0c5bfdf9e912b (patch)
tree6abe36e8e92a745e100e88ed8f8008759f80aff0 /drivers/input/tablet
parent74b634178e5f0e2d8d2d26f308c440687930274b (diff)
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>
Diffstat (limited to 'drivers/input/tablet')
-rw-r--r--drivers/input/tablet/wacom_wac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 99710e9fdd6a..4822c57a3756 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -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;