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Input: elantech - correct x, y value range for v2 hardware

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x, y values are actually 12-bit long. Also update protocol document to
reflect the change.

Signed-off-by: JJ Ding <jj_ding@emc.com.tw>
Acked-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
JJ Ding
2011-09-09 10:22:19 -07:00
committed by Dmitry Torokhov
parent b6b1e927ce
commit 1155961946
2 changed files with 8 additions and 8 deletions
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8
drivers/input/mouse/elantech.c
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@@ -290,15 +290,15 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
/* pass through... */
case 1:
/*
* byte 1: . . . . . x10 x9 x8
* byte 1: . . . . x11 x10 x9 x8
* byte 2: x7 x6 x5 x4 x4 x2 x1 x0
*/
x1 = ((packet[1] & 0x07) << 8) | packet[2];
x1 = ((packet[1] & 0x0f) << 8) | packet[2];
/*
* byte 4: . . . . . . y9 y8
* byte 4: . . . . y11 y10 y9 y8
* byte 5: y7 y6 y5 y4 y3 y2 y1 y0
*/
y1 = ETP_YMAX_V2 - (((packet[4] & 0x03) << 8) | packet[5]);
y1 = ETP_YMAX_V2 - (((packet[4] & 0x0f) << 8) | packet[5]);
input_report_abs(dev, ABS_X, x1);
input_report_abs(dev, ABS_Y, y1);