diff options
| author | Sung Joon Kim <sungjoon.kim@amd.com> | 2022-02-24 14:58:52 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-15 14:25:15 -0400 |
| commit | 4a897de1d607c15ebb9aa11a424ec3f3243304a3 (patch) | |
| tree | b2c308cca7d10c5b4fefd945c3bb8940ccaa9291 | |
| parent | 76a52f36b636cdff6b5b18f13daf05005e4b0b57 (diff) | |
| download | linux-4a897de1d607c15ebb9aa11a424ec3f3243304a3.tar.bz2 | |
drm/amd/display: disable HPD SW timer for passive dongle type 1 only
[why]
Need to provide this workaround
only for type 1 passive dongle
[how]
Detect if dongle is type 1 or 2.
And use it to determine if w/a is needed.
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Sung Joon Kim <sungjoon.kim@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/ddc_service_types.h | 1 |
4 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 1951a92e3417..b3ca3307d39d 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -731,6 +731,7 @@ static bool detect_dp(struct dc_link *link, sink_caps, audio_support); link->dpcd_caps.dongle_type = sink_caps->dongle_type; + link->dpcd_caps.is_dongle_type_one = sink_caps->is_dongle_type_one; link->dpcd_caps.dpcd_rev.raw = 0; } diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c index f1bbd918de35..1d4863763df9 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c @@ -493,6 +493,7 @@ void dal_ddc_service_i2c_query_dp_dual_mode_adaptor( sink_cap->max_hdmi_pixel_clock = max_tmds_clk * 1000; } + sink_cap->is_dongle_type_one = false; } else { if (is_valid_hdmi_signature == true) { @@ -510,6 +511,7 @@ void dal_ddc_service_i2c_query_dp_dual_mode_adaptor( "Type 1 DP-HDMI passive dongle (no signature) %dMhz: ", sink_cap->max_hdmi_pixel_clock / 1000); } + sink_cap->is_dongle_type_one = true; } return; diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 333f4a49cacb..a57ac086f2bd 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -1206,6 +1206,7 @@ struct dpcd_caps { /* dongle type (DP converter, CV smart dongle) */ enum display_dongle_type dongle_type; + bool is_dongle_type_one; /* branch device or sink device */ bool is_branch_dev; /* Dongle's downstream count. */ diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h index f561e213bf98..f883d87791fe 100644 --- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h +++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h @@ -64,6 +64,7 @@ enum ddc_service_type { struct display_sink_capability { /* dongle type (DP converter, CV smart dongle) */ enum display_dongle_type dongle_type; + bool is_dongle_type_one; /********************************************************** capabilities going INTO SINK DEVICE (stream capabilities) |