From: Fangzhi Zuo Jerry.Zuo@amd.com
[ Upstream commit abdd2768d7630bc8ec3403aea24f4197bada3c1f ]
[Why] 1. HDMI does not have 6 bpc support. Having 6 bpc pass validation does not comply with spec. 2. Validate 420 only for native HDMI, but not apply to pcon use case. 3. Current mode validation log is not readable.
[how] 1. Cap 8 bpc for dp-hdmi converter. 2. Validate yuv420 for pcon use case as well, if rgb/yuv444 8bpc cannot fit into pcon bw limitation of the link from the converter to HDMI sink. 3. Add readable pixel_format and color_depth into debug log.
Reviewed-by: Wayne Lin wayne.lin@amd.com Signed-off-by: Fangzhi Zuo Jerry.Zuo@amd.com Signed-off-by: Zaeem Mohamed zaeem.mohamed@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 19 ++++++--- .../gpu/drm/amd/display/dc/core/dc_debug.c | 40 +++++++++++++++++++ .../gpu/drm/amd/display/dc/core/dc_stream.c | 6 +-- .../gpu/drm/amd/display/dc/inc/core_status.h | 2 + 4 files changed, 59 insertions(+), 8 deletions(-)
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 90df415ece0bf..23b19821459f4 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7295,10 +7295,15 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, const struct drm_connector_state *drm_state = dm_state ? &dm_state->base : NULL; int requested_bpc = drm_state ? drm_state->max_requested_bpc : 8; enum dc_status dc_result = DC_OK; + uint8_t bpc_limit = 6;
if (!dm_state) return NULL;
+ if (aconnector->dc_link->connector_signal == SIGNAL_TYPE_HDMI_TYPE_A || + aconnector->dc_link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER) + bpc_limit = 8; + do { stream = create_stream_for_sink(connector, drm_mode, dm_state, old_stream, @@ -7319,11 +7324,12 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, dc_result = dm_validate_stream_and_context(adev->dm.dc, stream);
if (dc_result != DC_OK) { - DRM_DEBUG_KMS("Mode %dx%d (clk %d) failed DC validation with error %d (%s)\n", + DRM_DEBUG_KMS("Mode %dx%d (clk %d) pixel_encoding:%s color_depth:%s failed validation -- %s\n", drm_mode->hdisplay, drm_mode->vdisplay, drm_mode->clock, - dc_result, + dc_pixel_encoding_to_str(stream->timing.pixel_encoding), + dc_color_depth_to_str(stream->timing.display_color_depth), dc_status_to_str(dc_result));
dc_stream_release(stream); @@ -7331,10 +7337,13 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, requested_bpc -= 2; /* lower bpc to retry validation */ }
- } while (stream == NULL && requested_bpc >= 6); + } while (stream == NULL && requested_bpc >= bpc_limit);
- if (dc_result == DC_FAIL_ENC_VALIDATE && !aconnector->force_yuv420_output) { - DRM_DEBUG_KMS("Retry forcing YCbCr420 encoding\n"); + if ((dc_result == DC_FAIL_ENC_VALIDATE || + dc_result == DC_EXCEED_DONGLE_CAP) && + !aconnector->force_yuv420_output) { + DRM_DEBUG_KMS("%s:%d Retry forcing yuv420 encoding\n", + __func__, __LINE__);
aconnector->force_yuv420_output = true; stream = create_validate_stream_for_sink(aconnector, drm_mode, diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c index 801cdbc8117d9..e255c204b7e85 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c @@ -434,3 +434,43 @@ char *dc_status_to_str(enum dc_status status)
return "Unexpected status error"; } + +char *dc_pixel_encoding_to_str(enum dc_pixel_encoding pixel_encoding) +{ + switch (pixel_encoding) { + case PIXEL_ENCODING_RGB: + return "RGB"; + case PIXEL_ENCODING_YCBCR422: + return "YUV422"; + case PIXEL_ENCODING_YCBCR444: + return "YUV444"; + case PIXEL_ENCODING_YCBCR420: + return "YUV420"; + default: + return "Unknown"; + } +} + +char *dc_color_depth_to_str(enum dc_color_depth color_depth) +{ + switch (color_depth) { + case COLOR_DEPTH_666: + return "6-bpc"; + case COLOR_DEPTH_888: + return "8-bpc"; + case COLOR_DEPTH_101010: + return "10-bpc"; + case COLOR_DEPTH_121212: + return "12-bpc"; + case COLOR_DEPTH_141414: + return "14-bpc"; + case COLOR_DEPTH_161616: + return "16-bpc"; + case COLOR_DEPTH_999: + return "9-bpc"; + case COLOR_DEPTH_111111: + return "11-bpc"; + default: + return "Unknown"; + } +} diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c index 9a406d74c0dd7..3d93efdc1026d 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c @@ -819,12 +819,12 @@ void dc_stream_log(const struct dc *dc, const struct dc_stream_state *stream) stream->dst.height, stream->output_color_space); DC_LOG_DC( - "\tpix_clk_khz: %d, h_total: %d, v_total: %d, pixelencoder:%d, displaycolorDepth:%d\n", + "\tpix_clk_khz: %d, h_total: %d, v_total: %d, pixel_encoding:%s, color_depth:%s\n", stream->timing.pix_clk_100hz / 10, stream->timing.h_total, stream->timing.v_total, - stream->timing.pixel_encoding, - stream->timing.display_color_depth); + dc_pixel_encoding_to_str(stream->timing.pixel_encoding), + dc_color_depth_to_str(stream->timing.display_color_depth)); DC_LOG_DC( "\tlink: %d\n", stream->link->link_index); diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_status.h b/drivers/gpu/drm/amd/display/dc/inc/core_status.h index fa5edd03d0043..b5afd8c3103db 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/core_status.h +++ b/drivers/gpu/drm/amd/display/dc/inc/core_status.h @@ -60,5 +60,7 @@ enum dc_status { };
char *dc_status_to_str(enum dc_status status); +char *dc_pixel_encoding_to_str(enum dc_pixel_encoding pixel_encoding); +char *dc_color_depth_to_str(enum dc_color_depth color_depth);
#endif /* _CORE_STATUS_H_ */