drm/radeon/dpm: resume fixes for some systems

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commit 3640da2faa upstream.

Setting the power state prior to restoring the display
hardware leads to blank screens on some systems.  Drop
the power state set from dpm resume.  The power state
will get set as part of the mode set sequence.  Also
add an explicit power state set after mode set resume
to cover PX and headless systems.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=76761

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Alex Deucher 2014-05-30 12:40:15 -04:00 • committed by Greg Kroah-Hartman

parent 2e1c3e0ed8

commit ac05245237

3 changed files with 6 additions and 5 deletions

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6

drivers/gpu/drm/radeon/atombios_crtc.c

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4

drivers/gpu/drm/radeon/radeon_device.c

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1

drivers/gpu/drm/radeon/radeon_pm.c

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