diff options
author | Hans de Goede <hdegoede@redhat.com> | 2014-05-05 12:36:43 -0400 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-05-05 15:34:22 -0400 |
commit | 36189cc3cd57ab0f1cd75241f93fe01de928ac06 (patch) | |
tree | 389db4a82d2909051e2d3a70ae28bc67395a0977 /Documentation | |
parent | c16134976fb27d325ae037a8b39b537a77ba1d12 (diff) |
Input: elantech - fix touchpad initialization on Gigabyte U2442
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
Cc: stable@vger.kernel.org
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>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/input/elantech.txt | 5 |
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: | |||
504 | * reg_10 | 504 | * reg_10 |
505 | 505 | ||
506 | bit 7 6 5 4 3 2 1 0 | 506 | bit 7 6 5 4 3 2 1 0 |
507 | 0 0 0 0 0 0 0 A | 507 | 0 0 0 0 R F T A |
508 | 508 | ||
509 | A: 1 = enable absolute tracking | 509 | A: 1 = enable absolute tracking |
510 | T: 1 = enable two finger mode auto correct | ||
511 | F: 1 = disable ABS Position Filter | ||
512 | R: 1 = enable real hardware resolution | ||
510 | 513 | ||
511 | 6.2 Native absolute mode 6 byte packet format | 514 | 6.2 Native absolute mode 6 byte packet format |
512 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 515 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |