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drm/i915/dsc: move slice height calculation to encoder

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Turns out this isn't compatible with DSI, where we use the value from
VBT. No functional changes.

Cc: Manasi Navare <manasi.d.navare@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/3dd689688a51daff26088eaf6feac27f8b9f5ebc.1575974743.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2019-12-10 12:50:49 +02:00
parent 7a7b5be96f
commit c42c38ec30
2 changed files with 12 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
drivers/gpu/drm/i915/display/intel_dp.c
View file

@ -2060,6 +2060,18 @@ static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
if (ret)
return ret;
/*
* Slice Height of 8 works for all currently available panels. So start
* with that if pic_height is an integral multiple of 8. Eventually add
* logic to try multiple slice heights.
*/
if (vdsc_cfg->pic_height % 8 == 0)
vdsc_cfg->slice_height = 8;
else if (vdsc_cfg->pic_height % 4 == 0)
vdsc_cfg->slice_height = 4;
else
vdsc_cfg->slice_height = 2;
vdsc_cfg->dsc_version_major =
(intel_dp->dsc_dpcd[DP_DSC_REV - DP_DSC_SUPPORT] &
DP_DSC_MAJOR_MASK) >> DP_DSC_MAJOR_SHIFT;

11
drivers/gpu/drm/i915/display/intel_vdsc.c
View file

@ -345,17 +345,6 @@ int intel_dsc_compute_params(struct intel_encoder *encoder,
vdsc_cfg->pic_height = pipe_config->hw.adjusted_mode.crtc_vdisplay;
vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
pipe_config->dsc.slice_count);
/*
* Slice Height of 8 works for all currently available panels. So start
* with that if pic_height is an integral multiple of 8.
* Eventually add logic to try multiple slice heights.
*/
if (vdsc_cfg->pic_height % 8 == 0)
vdsc_cfg->slice_height = 8;
else if (vdsc_cfg->pic_height % 4 == 0)
vdsc_cfg->slice_height = 4;
else
vdsc_cfg->slice_height = 2;
/* Gen 11 does not support YCbCr */
vdsc_cfg->simple_422 = false;