openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915: assume all GM45 Acer laptops use inverted backlight PWM 

There is plenty of evidence suggesting all of the GM45 based Acer
laptops (including their eMachines and Packard Bell brands) use inverted
backlight PWM. Assume this is really the case, and quirk them all.

The old bugs that were fixed by subsystem device specific quirks:
 * https://bugs.freedesktop.org/show_bug.cgi?id=59628
 * https://bugzilla.kernel.org/show_bug.cgi?id=31522#c35
 * https://bugs.freedesktop.org/show_bug.cgi?id=44156
 * https://bugzilla.kernel.org/show_bug.cgi?id=53881

See also this bug and the plethora of duplicates:
 * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/765438

References: https://bugzilla.kernel.org/show_bug.cgi?id=54171
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2013-09-20 15:05:30 +03:00 committed by Daniel Vetter
parent e5ad4026b9
commit ee1452d745
1 changed files with 5 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/i915/intel_display.c
View File

@ -10188,20 +10188,11 @@ static struct intel_quirk intel_quirks[] = {
/* Sony Vaio Y cannot use SSC on LVDS */
{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
/* Acer Aspire 5734Z must invert backlight brightness */
{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
/* Acer/eMachines G725 */
{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
/* Acer/eMachines e725 */
{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
/* Acer/Packard Bell NCL20 */
{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
/* Acer Aspire 4736Z */
{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
/*
* All GM45 Acer (and its brands eMachines and Packard Bell) laptops
* seem to use inverted backlight PWM.
*/
{ 0x2a42, 0x1025, PCI_ANY_ID, quirk_invert_brightness },
/* Dell XPS13 HD Sandy Bridge */
{ 0x0116, 0x1028, 0x052e, quirk_no_pcm_pwm_enable },