drm/i915: Only look for matching clocks for LVDS downclock

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This patch enforces that the downclock clock source is the same as the preferred
clock source for LVDS. This fixes a bug where the driver chooses a downclock
clock source with a different P than the preferred mode clock source. This
happened even if the preferred clock source implemented an acceptable rate for
the downclock. The result of this bug is that downclock is disabled.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Sean Paul 2012-01-10 15:09:36 -08:00 • committed by Daniel Vetter

parent 0b8ecdda19

commit cec2f356d5

1 changed files with 41 additions and 33 deletions

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74

drivers/gpu/drm/i915/intel_display.c

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