drm/i915/panel: Restore saved value of BLC_PWM_CTL

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After a GPU reset, the backlight controller registers may be also reset
to 0. In that case we should restore those to the original values
programmed by the BIOS. Note that we still lack the code to handle the
case where the BIOS failed to program those registers at all...

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

...

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Chris Wilson 2010-11-23 09:45:50 +00:00

parent 3685092b71

commit 0b0b053a39

1 changed files with 42 additions and 10 deletions

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52

drivers/gpu/drm/i915/intel_panel.c

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