Commit 18feaf6d authored by Ankit Nautiyal's avatar Ankit Nautiyal Committed by Jani Nikula
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drm/edid: Fix minimum bpc supported with DSC1.2 for HDMI sink 



HF-VSDB/SCDB has bits to advertise support for 16, 12 and 10 bpc.
If none of the bits are set, the minimum bpc supported with DSC is 8.

This patch corrects the min bpc supported to be 8, instead of 0.

Fixes: 76ee7b90 ("drm/edid: Parse DSC1.2 cap fields from HFVSDB block")
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

v2: s/DSC1.2/DSC 1.2

Signed-off-by: default avatarAnkit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220916100551.2531750-2-ankit.k.nautiyal@intel.com
parent f633a206

drivers/gpu/drm/drm_edid.c

+2 −1
Original line number Diff line number Diff line
@@ -5819,7 +5819,8 @@ static void drm_parse_hdmi_forum_scds(struct drm_connector *connector, 
			else if (hf_scds[11] & DRM_EDID_DSC_10BPC)

				hdmi_dsc->bpc_supported = 10;

			else

				hdmi_dsc->bpc_supported = 0;

				/* Supports min 8 BPC if DSC 1.2 is supported*/

				hdmi_dsc->bpc_supported = 8;



			dsc_max_frl_rate = (hf_scds[12] & DRM_EDID_DSC_MAX_FRL_RATE_MASK) >> 4;

			drm_get_max_frl_rate(dsc_max_frl_rate, &hdmi_dsc->max_lanes,