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authorJJ Ding <jj_ding@emc.com.tw>2011-09-09 19:22:19 +0200
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2011-09-09 19:34:25 +0200
commit1155961946f2c6ac0f2db2bc6318ec01c79fb3fa (patch)
treecb06a7c54103c63c3e137f572140ad53f04b726f
parentInput: twl6040-vibra - fix compiler warning (diff)
downloadlinux-1155961946f2c6ac0f2db2bc6318ec01c79fb3fa.tar.xz
linux-1155961946f2c6ac0f2db2bc6318ec01c79fb3fa.zip
Input: elantech - correct x, y value range for v2 hardware
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>
-rw-r--r--Documentation/input/elantech.txt8
-rw-r--r--drivers/input/mouse/elantech.c8
2 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/input/elantech.txt b/Documentation/input/elantech.txt
index db798af5ef98..bce9941ffa94 100644
--- a/Documentation/input/elantech.txt
+++ b/Documentation/input/elantech.txt
@@ -389,14 +389,14 @@ byte 0:
byte 1:
bit 7 6 5 4 3 2 1 0
- p7 p6 p5 p4 . x10 x9 x8
+ p7 p6 p5 p4 x11 x10 x9 x8
byte 2:
bit 7 6 5 4 3 2 1 0
x7 x6 x5 x4 x3 x2 x1 x0
- x10..x0 = absolute x value (horizontal)
+ x11..x0 = absolute x value (horizontal)
byte 3:
@@ -420,7 +420,7 @@ byte 3:
byte 4:
bit 7 6 5 4 3 2 1 0
- p3 p1 p2 p0 . . y9 y8
+ p3 p1 p2 p0 y11 y10 y9 y8
p7..p0 = pressure (not EF113)
@@ -429,7 +429,7 @@ byte 5:
bit 7 6 5 4 3 2 1 0
y7 y6 y5 y4 y3 y2 y1 y0
- y9..y0 = absolute y value (vertical)
+ y11..y0 = absolute y value (vertical)
4.2.2 Two finger touch
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 32503565faf9..da161dae3502 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -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);