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drm/i915/dp: Check src/sink compressed bpp limit for edp

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Use checks for src and sink limits before computing compressed bpp for
eDP.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230817142459.89764-18-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal
2023-08-17 19:54:58 +05:30
parent 1c56e9a398
commit 61d340faaa
1 changed files with 15 additions and 3 deletions
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18
drivers/gpu/drm/i915/display/intel_dp.c
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@@ -2027,6 +2027,8 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
int pipe_bpp, forced_bpp;
int dsc_src_min_bpp, dsc_sink_min_bpp, dsc_min_bpp;
int dsc_src_max_bpp, dsc_sink_max_bpp, dsc_max_bpp;
forced_bpp = intel_dp_force_dsc_pipe_bpp(intel_dp, conn_state, limits);
@@ -2044,9 +2046,19 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
}
pipe_config->port_clock = limits->max_rate;
pipe_config->lane_count = limits->max_lane_count;
pipe_config->dsc.compressed_bpp =
min_t(u16, drm_edp_dsc_sink_output_bpp(intel_dp->dsc_dpcd) >> 4,
pipe_bpp);
dsc_src_min_bpp = dsc_src_min_compressed_bpp();
dsc_sink_min_bpp = dsc_sink_min_compressed_bpp(pipe_config);
dsc_min_bpp = max(dsc_src_min_bpp, dsc_sink_min_bpp);
dsc_src_max_bpp = dsc_src_max_compressed_bpp(intel_dp);
dsc_sink_max_bpp = dsc_sink_max_compressed_bpp(intel_dp, pipe_config, pipe_bpp / 3);
dsc_max_bpp = dsc_sink_max_bpp ? min(dsc_sink_max_bpp, dsc_src_max_bpp) : dsc_src_max_bpp;
/* Compressed BPP should be less than the Input DSC bpp */
dsc_max_bpp = min(dsc_max_bpp, pipe_bpp - 1);
pipe_config->dsc.compressed_bpp = max(dsc_min_bpp, dsc_max_bpp);
pipe_config->pipe_bpp = pipe_bpp;