From: Ankit Nautiyal Date: Fri, 16 Sep 2022 10:05:48 +0000 (+0530) Subject: drm/edid: Fix minimum bpc supported with DSC1.2 for HDMI sink X-Git-Tag: v6.2-rc1~124^2~28^2~94 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=18feaf6d0784dcba888859109676adf1e0260dfd;p=thirdparty%2Fkernel%2Flinux.git 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: 76ee7b905678 ("drm/edid: Parse DSC1.2 cap fields from HFVSDB block") Cc: Ankit Nautiyal Cc: Uma Shankar Cc: Jani Nikula Cc: Maarten Lankhorst v2: s/DSC1.2/DSC 1.2 Signed-off-by: Ankit Nautiyal Reviewed-by: Jani Nikula Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20220916100551.2531750-2-ankit.k.nautiyal@intel.com --- diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 2c6ce81784cf5..39e6695205524 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -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,