From 20ea32ad9c999f5a43d3f8211546bf8ece36d587 Mon Sep 17 00:00:00 2001 From: Ankit Nautiyal Date: Fri, 16 Sep 2022 15:35:48 +0530 Subject: [PATCH] drm/edid: Fix minimum bpc supported with DSC1.2 for HDMI sink [ Upstream commit 18feaf6d0784dcba888859109676adf1e0260dfd ] 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 Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_edid.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 6ab048ba8021..d940c76419c5 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4942,7 +4942,8 @@ static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector, else if (hf_vsdb[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_vsdb[12] & DRM_EDID_DSC_MAX_FRL_RATE_MASK) >> 4; drm_get_max_frl_rate(dsc_max_frl_rate, &hdmi_dsc->max_lanes,