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drm/radeon: hdmi deep color modes must obey clock limit of sink.

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Make sure that a hdmi deep color mode can't exceed the max tmds
clock limit of a hdmi sink if such a limit is defined by edid.

If requested deep color bpc would exceed the limit given the mode
to be set, try to degrade gracefully to lower supported deep color
bpc or to standard 8 bpc if needed.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Kleiner
2014-06-05 09:58:24 -04:00
committed by Alex Deucher
parent 5d02626d31
commit ea29286146
3 changed files with 35 additions and 0 deletions
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drivers/gpu/drm/radeon/radeon_mode.h
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@@ -506,6 +506,7 @@ struct radeon_connector {
struct radeon_i2c_chan *router_bus;
enum radeon_connector_audio audio;
enum radeon_connector_dither dither;
int pixelclock_for_modeset;
};
struct radeon_framebuffer {