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authorHans de Goede <hdegoede@redhat.com>2014-05-05 09:36:43 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-07 13:25:36 -0700
commit5e02a153d1a0d5131a9943762f01179b42f074e2 (patch)
tree8869255bf2a7eebd5036b3c819549c97908bfd79 /Documentation
parent7f63e60bd6e1843fd3510d4cbc036e3d388944d1 (diff)
downloadlinux-linaro-stable-5e02a153d1a0d5131a9943762f01179b42f074e2.tar.gz
Input: elantech - fix touchpad initialization on Gigabyte U2442
commit 36189cc3cd57ab0f1cd75241f93fe01de928ac06 upstream. The hw_version 3 Elantech touchpad on the Gigabyte U2442 does not accept 0x0b as initialization value for r10, this stand-alone version of the driver: http://planet76.com/drivers/elantech/psmouse-elantech-v6.tar.bz2 Uses 0x03 which does work, so this means not setting bit 3 of r10 which sets: "Enable Real H/W Resolution In Absolute mode" Which will result in half the x and y resolution we get with that bit set, so simply not setting it everywhere is not a solution. We've been unable to find a way to identify touchpads where setting the bit will fail, so this patch uses a dmi based blacklist for this. https://bugzilla.kernel.org/show_bug.cgi?id=61151 Reported-by: Philipp Wolfer <ph.wolfer@gmail.com> Tested-by: Philipp Wolfer <ph.wolfer@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/input/elantech.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/input/elantech.txt b/Documentation/input/elantech.txt
index 5602eb71ad5d..e1ae127ed099 100644
--- a/Documentation/input/elantech.txt
+++ b/Documentation/input/elantech.txt
@@ -504,9 +504,12 @@ byte 5:
* reg_10
bit 7 6 5 4 3 2 1 0
- 0 0 0 0 0 0 0 A
+ 0 0 0 0 R F T A
A: 1 = enable absolute tracking
+ T: 1 = enable two finger mode auto correct
+ F: 1 = disable ABS Position Filter
+ R: 1 = enable real hardware resolution
6.2 Native absolute mode 6 byte packet format
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~