drm/i915: Do YCbCr 444->420 conversion via DP protocol converters

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For platforms that can't do native 4:2:0 outout we may still be
able to do it by getting the DP->HDMI protocol converter to
perform the 4:4:4->4:2:0 downsamling for us. In this case we
have to configure our hardware to output YCbCr 4:4:4, which we've
already hooked up so all we need to do is flip the switch.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-19-ville.syrjala@linux.intel.com
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Ville Syrjälä 2020-09-04 14:53:54 +03:00

parent 2ef8d0f7de

commit 181567aa9f

4 changed files with 109 additions and 25 deletions

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1

drivers/gpu/drm/i915/display/intel_display_types.h

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121

drivers/gpu/drm/i915/display/intel_dp.c

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8

drivers/gpu/drm/i915/display/intel_hdmi.c

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4

drivers/gpu/drm/i915/display/intel_hdmi.h

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