drm/dsc: Modify DRM helper to return complete DSC color depth capabilities
DSC DPCD color depth register advertises its color depth capabilities by setting each of the bits that corresponding to a specific color depth. This patch defines those specific color depths and adds a helper to return an array of color depth capabilities. v2: * Simplify the logic (Ville) Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Acked-by: Sean Paul <seanpaul@chromium.org> (For merging through drm-intel) Reviewed-by: Ville Syrjala <ville.syrjala@linux.intel.com> Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181127214125.17658-1-manasi.d.navare@intel.com
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@ -1428,17 +1428,19 @@ u8 drm_dp_dsc_sink_line_buf_depth(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
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}
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EXPORT_SYMBOL(drm_dp_dsc_sink_line_buf_depth);
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u8 drm_dp_dsc_sink_max_color_depth(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
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int drm_dp_dsc_sink_supported_input_bpcs(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE],
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u8 dsc_bpc[3])
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{
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int num_bpc = 0;
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u8 color_depth = dsc_dpcd[DP_DSC_DEC_COLOR_DEPTH_CAP - DP_DSC_SUPPORT];
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if (color_depth & DP_DSC_12_BPC)
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return 12;
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dsc_bpc[num_bpc++] = 12;
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if (color_depth & DP_DSC_10_BPC)
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return 10;
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dsc_bpc[num_bpc++] = 10;
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if (color_depth & DP_DSC_8_BPC)
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return 8;
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dsc_bpc[num_bpc++] = 8;
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return 0;
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return num_bpc;
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}
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EXPORT_SYMBOL(drm_dp_dsc_sink_max_color_depth);
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EXPORT_SYMBOL(drm_dp_dsc_sink_supported_input_bpcs);
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@ -1123,7 +1123,8 @@ drm_dp_is_branch(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
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u8 drm_dp_dsc_sink_max_slice_count(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE],
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bool is_edp);
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u8 drm_dp_dsc_sink_line_buf_depth(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE]);
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u8 drm_dp_dsc_sink_max_color_depth(const u8 dsc_dpc[DP_DSC_RECEIVER_CAP_SIZE]);
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int drm_dp_dsc_sink_supported_input_bpcs(const u8 dsc_dpc[DP_DSC_RECEIVER_CAP_SIZE],
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u8 dsc_bpc[3]);
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static inline bool
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drm_dp_sink_supports_dsc(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
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