linux-stable.git/drivers/gpu, branch v4.4.71

drm/gma500/psb: Actually use VBT mode when it is found

2017-06-07T10:06:01+00:00

commit 82bc9a42cf854fdf63155759c0aa790bd1f361b0 upstream.

With LVDS we were incorrectly picking the pre-programmed mode instead of
the prefered mode provided by VBT. Make sure we pick the VBT mode if
one is provided. It is likely that the mode read-out code is still wrong
but this patch fixes the immediate problem on most machines.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78562
Signed-off-by: Patrik Jakobsson 
Link: http://patchwork.freedesktop.org/patch/msgid/20170418114332.12183-1-patrik.r.jakobsson@gmail.com
Signed-off-by: Greg Kroah-Hartman

drm/radeon: Unbreak HPD handling for r600+

2017-06-07T10:06:00+00:00

commit 3d18e33735a02b1a90aecf14410bf3edbfd4d3dc upstream.

We end up reading the interrupt register for HPD5, and then writing it
to HPD6 which on systems without anything using HPD5 results in
permanently disabling hotplug on one of the display outputs after the
first time we acknowledge a hotplug interrupt from the GPU.

This code is really bad. But for now, let's just fix this. I will
hopefully have a large patch series to refactor all of this soon.

Reviewed-by: Christian König 
Signed-off-by: Lyude 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/radeon/ci: disable mclk switching for high refresh rates (v2)

2017-06-07T10:06:00+00:00

commit 58d7e3e427db1bd68f33025519a9468140280a75 upstream.

Even if the vblank period would allow it, it still seems to
be problematic on some cards.

v2: fix logic inversion (Nils)

bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868

Acked-by: Christian König 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/edid: Add 10 bpc quirk for LGD 764 panel in HP zBook 17 G2

2017-05-25T12:30:17+00:00

commit e345da82bd6bdfa8492f80b3ce4370acfd868d95 upstream.

The builtin eDP panel in the HP zBook 17 G2 supports 10 bpc,
as advertised by the Laptops product specs and verified via
injecting a fixed edid + photometer measurements, but edid
reports unknown depth, so drivers fall back to 6 bpc.

Add a quirk to get the full 10 bpc.

Signed-off-by: Mario Kleiner 
Acked-by: Harry Wentland 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1492787108-23959-1-git-send-email-mario.kleiner.de@gmail.com
Signed-off-by: Greg Kroah-Hartman

drm/nouveau/tmr: handle races with hw when updating the next alarm time

2017-05-25T12:30:10+00:00

commit 1b0f84380b10ee97f7d2dd191294de9017e94d1d upstream.

If the time to the next alarm is short enough, we could race with HW and
end up with an ~4 second delay until it triggers.

Fix this by checking again after we update HW.

Signed-off-by: Ben Skeggs 
Signed-off-by: Greg Kroah-Hartman

drm/nouveau/tmr: avoid processing completed alarms when adding a new one

2017-05-25T12:30:10+00:00

commit 330bdf62fe6a6c5b99a647f7bf7157107c9348b3 upstream.

The idea here was to avoid having to "manually" program the HW if there's
a new earliest alarm.  This was lazy and bad, as it leads to loads of fun
races between inter-related callers (ie. therm).

Turns out, it's not so difficult after all.  Go figure ;)

Signed-off-by: Ben Skeggs 
Signed-off-by: Greg Kroah-Hartman

drm/nouveau/tmr: fix corruption of the pending list when rescheduling an alarm

2017-05-25T12:30:10+00:00

commit 9fc64667ee48c9a25e7dca1a6bcb6906fec5bcc5 upstream.

At least therm/fantog "attempts" to work around this issue, which could
lead to corruption of the pending alarm list.

Fix it properly by not updating the timestamp without the lock held, or
trying to add an already pending alarm to the pending alarm list....

Signed-off-by: Ben Skeggs 
Signed-off-by: Greg Kroah-Hartman

drm/nouveau/tmr: ack interrupt before processing alarms

2017-05-25T12:30:10+00:00

commit 3733bd8b407211739e72d051e5f30ad82a52c4bc upstream.

Fixes a race where we can miss an alarm that triggers while we're already
processing previous alarms.

Signed-off-by: Ben Skeggs 
Signed-off-by: Greg Kroah-Hartman

drm/nouveau/therm: remove ineffective workarounds for alarm bugs

2017-05-25T12:30:10+00:00

commit e4311ee51d1e2676001b2d8fcefd92bdd79aad85 upstream.

These were ineffective due to touching the list without the alarm lock,
but should no longer be required.

Signed-off-by: Ben Skeggs 
Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Make display watermark calculations more accurate

2017-05-25T12:30:10+00:00

commit d63c277dc672e0c568481af043359420fa9d4736 upstream.

Avoid big roundoff errors in scanline/hactive durations for
high pixel clocks, especially for >= 500 Mhz, and thereby
program more accurate display fifo watermarks.

Implemented here for DCE 6,8,10,11.
Successfully tested on DCE 10 with AMD R9 380 Tonga.

Reviewed-by: Alex Deucher 
Signed-off-by: Mario Kleiner 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman