drm/i915/dsi: account for DSC in horizontal timings

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When DSC is enabled, we need to adjust the horizontal timings to account
for the compressed (and therefore reduced) link speed.

The compressed frequency ratio simplifies down to the ratio between
compressed and non-compressed bpp.

Bspec: 49263
Suggested-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/fecebdc2719dd0c78eaf8f4d3225bb185956d7db.1575974743.git.jani.nikula@intel.com

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This commit is contained in:

Jani Nikula 2019-12-10 12:50:58 +02:00

parent 38b898810a

commit 53693f02d8

1 changed files with 19 additions and 5 deletions

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24

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

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