From: Wayne Lin <Wayne.Lin@xxxxxxx>
[Why]
HDMI 2.0 requires scrambling under specific conditions. We refer to
stream property LTE_340MCSC_SCRAMBLE to determine whether en/dis
scrambling.
While creating stream for sink, we setup LTE_340MCSC_SCRAMBLE by
referring to edid_caps. However, dm_helpers_parse_edid_caps()
doesn't construct HDMI Forum block data for edid_caps.
Moreover, fill_stream_properties_from_drm_display_mode() aslo
unconsciously clear the LTE_340MCSC_SCRAMBLE flag.
[How]
Drm already provides drm_display_info to refer HDMI Forum vsdb info.
Set stream LTE_340MCSC_SCRAMBLE by drm_display_info and remove
memset in fill_stream_properties_from_drm_display_mode()
Change-Id: I443a8d0346b97472e454a9c7f3822c4ee0ad3f85
Signed-off-by: Wayne Lin <Wayne.Lin@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index dd2964a91e17..ad6f87058ab6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3470,7 +3470,6 @@ static void fill_stream_properties_from_drm_display_mode(
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct hdmi_vendor_infoframe hv_frame;
struct hdmi_avi_infoframe avi_frame;
- memset(timing_out, 0, sizeof(struct dc_crtc_timing));
timing_out->h_border_left = 0;
timing_out->h_border_right = 0;
@@ -3734,6 +3733,9 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
stream->dm_stream_context = aconnector;
+ stream->timing.flags.LTE_340MCSC_SCRAMBLE =
+ drm_connector->display_info.hdmi.scdc.scrambling.low_rates;
+
list_for_each_entry(preferred_mode, &aconnector->base.modes, head) {
/* Search for preferred mode */
if (preferred_mode->type & DRM_MODE_TYPE_PREFERRED) {
--
2.17.1
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