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 69014d24431f..dfb6fbaf01e9 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3840,8 +3840,7 @@ static void update_stream_scaling_settings(const struct drm_display_mode *mode, static enum dc_color_depth convert_color_depth_from_display_info(const struct drm_connector *connector, - const struct drm_connector_state *state, - bool is_y420) + bool is_y420, int requested_bpc) { uint8_t bpc; @@ -3861,10 +3860,7 @@ convert_color_depth_from_display_info(const struct drm_connector *connector, bpc = bpc ? bpc : 8; } - if (!state) - state = connector->state; - - if (state) { + if (requested_bpc > 0) { /* * Cap display bpc based on the user requested value. * @@ -3873,7 +3869,7 @@ convert_color_depth_from_display_info(const struct drm_connector *connector, * or if this was called outside of atomic check, so it * can't be used directly. */ - bpc = min(bpc, state->max_requested_bpc); + bpc = min_t(u8, bpc, requested_bpc); /* Round down to the nearest even number. */ bpc = bpc - (bpc & 1); @@ -3995,7 +3991,8 @@ static void fill_stream_properties_from_drm_display_mode( const struct drm_display_mode *mode_in, const struct drm_connector *connector, const struct drm_connector_state *connector_state, - const struct dc_stream_state *old_stream) + const struct dc_stream_state *old_stream, + int requested_bpc) { struct dc_crtc_timing *timing_out = &stream->timing; const struct drm_display_info *info = &connector->display_info; @@ -4025,8 +4022,9 @@ static void fill_stream_properties_from_drm_display_mode( timing_out->timing_3d_format = TIMING_3D_FORMAT_NONE; timing_out->display_color_depth = convert_color_depth_from_display_info( - connector, connector_state, - (timing_out->pixel_encoding == PIXEL_ENCODING_YCBCR420)); + connector, + (timing_out->pixel_encoding == PIXEL_ENCODING_YCBCR420), + requested_bpc); timing_out->scan_type = SCANNING_TYPE_NODATA; timing_out->hdmi_vic = 0; @@ -4232,7 +4230,8 @@ static struct dc_stream_state * create_stream_for_sink(struct amdgpu_dm_connector *aconnector, const struct drm_display_mode *drm_mode, const struct dm_connector_state *dm_state, - const struct dc_stream_state *old_stream) + const struct dc_stream_state *old_stream, + int requested_bpc) { struct drm_display_mode *preferred_mode = NULL; struct drm_connector *drm_connector; @@ -4317,10 +4316,10 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector, */ if (!scale || mode_refresh != preferred_refresh) fill_stream_properties_from_drm_display_mode(stream, - &mode, &aconnector->base, con_state, NULL); + &mode, &aconnector->base, con_state, NULL, requested_bpc); else fill_stream_properties_from_drm_display_mode(stream, - &mode, &aconnector->base, con_state, old_stream); + &mode, &aconnector->base, con_state, old_stream, requested_bpc); stream->timing.flags.DSC = 0; @@ -4839,16 +4838,54 @@ static void handle_edid_mgmt(struct amdgpu_dm_connector *aconnector) create_eml_sink(aconnector); } +static struct dc_stream_state * +create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, + const struct drm_display_mode *drm_mode, + const struct dm_connector_state *dm_state, + const struct dc_stream_state *old_stream) +{ + struct drm_connector *connector = &aconnector->base; + struct amdgpu_device *adev = connector->dev->dev_private; + struct dc_stream_state *stream; + int requested_bpc = connector->state ? connector->state->max_requested_bpc : 8; + enum dc_status dc_result = DC_OK; + + do { + stream = create_stream_for_sink(aconnector, drm_mode, + dm_state, old_stream, + requested_bpc); + if (stream == NULL) { + DRM_ERROR("Failed to create stream for sink!\n"); + break; + } + + dc_result = dc_validate_stream(adev->dm.dc, stream); + + if (dc_result != DC_OK) { + DRM_DEBUG_KMS("Mode %dx%d (clk %d) failed DC validation with error %d\n", + drm_mode->hdisplay, + drm_mode->vdisplay, + drm_mode->clock, + dc_result); + + dc_stream_release(stream); + stream = NULL; + requested_bpc -= 2; /* lower bpc to retry validation */ + } + + } while (stream == NULL && requested_bpc >= 6); + + return stream; +} + enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { int result = MODE_ERROR; struct dc_sink *dc_sink; - struct amdgpu_device *adev = connector->dev->dev_private; /* TODO: Unhardcode stream count */ struct dc_stream_state *stream; struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); - enum dc_status dc_result = DC_OK; if ((mode->flags & DRM_MODE_FLAG_INTERLACE) || (mode->flags & DRM_MODE_FLAG_DBLSCAN)) @@ -4869,24 +4906,11 @@ enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector *connec goto fail; } - stream = create_stream_for_sink(aconnector, mode, NULL, NULL); - if (stream == NULL) { - DRM_ERROR("Failed to create stream for sink!\n"); - goto fail; - } - - dc_result = dc_validate_stream(adev->dm.dc, stream); - - if (dc_result == DC_OK) + stream = create_validate_stream_for_sink(aconnector, mode, NULL, NULL); + if (stream) { + dc_stream_release(stream); result = MODE_OK; - else - DRM_DEBUG_KMS("Mode %dx%d (clk %d) failed DC validation with error %d\n", - mode->hdisplay, - mode->vdisplay, - mode->clock, - dc_result); - - dc_stream_release(stream); + } fail: /* TODO: error handling*/ @@ -5209,10 +5233,12 @@ static int dm_encoder_helper_atomic_check(struct drm_encoder *encoder, return 0; if (!state->duplicated) { + int max_bpc = conn_state->max_requested_bpc; is_y420 = drm_mode_is_420_also(&connector->display_info, adjusted_mode) && aconnector->force_yuv420_output; - color_depth = convert_color_depth_from_display_info(connector, conn_state, - is_y420); + color_depth = convert_color_depth_from_display_info(connector, + is_y420, + max_bpc); bpp = convert_dc_color_depth_into_bpc(color_depth) * 3; clock = adjusted_mode->clock; dm_new_connector_state->pbn = drm_dp_calc_pbn_mode(clock, bpp, false); @@ -7642,10 +7668,10 @@ static int dm_update_crtc_state(struct amdgpu_display_manager *dm, if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) goto skip_modeset; - new_stream = create_stream_for_sink(aconnector, - &new_crtc_state->mode, - dm_new_conn_state, - dm_old_crtc_state->stream); + new_stream = create_validate_stream_for_sink(aconnector, + &new_crtc_state->mode, + dm_new_conn_state, + dm_old_crtc_state->stream); /* * we can have no stream on ACTION_SET if a display