From: Ankit Nautiyal Date: Thu, 9 Mar 2023 06:28:49 +0000 (+0530) Subject: drm/dp_helper: Add helper to check DSC support with given o/p format X-Git-Tag: v6.6.7~1918^2~17^2~376 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a389789c0aaf8428cd44cac4f92c8786505f5f1e;p=platform%2Fkernel%2Flinux-starfive.git drm/dp_helper: Add helper to check DSC support with given o/p format Add helper to check if the DP sink supports DSC with the given o/p format. v2: Add documentation for the helper. (Uma Shankar) v3: /** instead of /* (Uma Shankar) Signed-off-by: Ankit Nautiyal Reviewed-by: Uma Shankar Signed-off-by: Uma Shankar Link: https://patchwork.freedesktop.org/patch/msgid/20230309062855.393087-2-suraj.kandpal@intel.com --- diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h index ab55453..533d3ee 100644 --- a/include/drm/display/drm_dp_helper.h +++ b/include/drm/display/drm_dp_helper.h @@ -194,6 +194,19 @@ drm_dp_dsc_sink_max_slice_width(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE]) DP_DSC_SLICE_WIDTH_MULTIPLIER; } +/** + * drm_dp_dsc_sink_supports_format() - check if sink supports DSC with given output format + * @dsc_dpcd : DSC-capability DPCDs of the sink + * @output_format: output_format which is to be checked + * + * Returns true if the sink supports DSC with the given output_format, false otherwise. + */ +static inline bool +drm_dp_dsc_sink_supports_format(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE], u8 output_format) +{ + return dsc_dpcd[DP_DSC_DEC_COLOR_FORMAT_CAP - DP_DSC_SUPPORT] & output_format; +} + /* Forward Error Correction Support on DP 1.4 */ static inline bool drm_dp_sink_supports_fec(const u8 fec_capable)