| commit | 69d1e4c856fd460c37c3eb58996f69dc9add8111 | |
| author | Takashi Iwai <tiwai@suse.de> | |
| Thu, 21 Jun 2012 13:30:41 +0000 (21 15:30 +0200) | ||
| committer | Ben Hutchings <ben@decadent.org.uk> | |
| Wed, 4 Jul 2012 04:44:27 +0000 (4 05:44 +0100) | ||
| tree | bbe54cb6e487e6086900b304cc81a5c8d3a7051d | treesnapshot (tar.gz zip) |
| parent | 8bd2f25de46602be06dbce1c5daca376cfd6ed8b | commitdiff |
drm/i915: Fix eDP blank screen after S3 resume on HP desktops
commit 6db65cbb941f9d433659bdad02b307f6d94465df upstream.
This patch fixes the problem on some HP desktop machines with eDP
which give blank screens after S3 resume.
It turned out that BLC_PWM_CPU_CTL must be written after
BLC_PWM_CPU_CTL2. Otherwise it doesn't take effect on these
SNB machines.
Tested with 3.5-rc3 kernel.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49233
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
commit 6db65cbb941f9d433659bdad02b307f6d94465df upstream.
This patch fixes the problem on some HP desktop machines with eDP
which give blank screens after S3 resume.
It turned out that BLC_PWM_CPU_CTL must be written after
BLC_PWM_CPU_CTL2. Otherwise it doesn't take effect on these
SNB machines.
Tested with 3.5-rc3 kernel.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49233
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| drivers/gpu/drm/i915/i915_suspend.c | diffblobblamehistory |