Exposes the pixel encoding as the DRM property "pixel encoding" and the module parameter pixel_encoding.
The DRM property may take values "auto" (current behaviour when a display is plugged in), "rgb" for RGB, or "ycbcr444" for YCbCr 4:4:4. The module parameter may only be set on boot and is of the format [connector-name:]encoding[,...] where encoding is one of the same values as are valid for the DRM property. https://gitlab.freedesktop.org/drm/amd/-/issues/476 --- drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 33 +++ drivers/gpu/drm/amd/amdgpu/amdgpu_display.h | 4 + drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 8 + .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 247 ++++++++++++++++-- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 + drivers/gpu/drm/amd/display/dc/core/dc.c | 12 +- drivers/gpu/drm/amd/display/dc/dc_stream.h | 2 + 7 files changed, 289 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index d76172965199..37748f35c52b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -614,6 +614,31 @@ static const struct drm_prop_enum_list amdgpu_dither_enum_list[] = { AMDGPU_FMT_DITHER_ENABLE, "on" }, }; +static const struct drm_prop_enum_list amdgpu_user_pixenc_list[] = +{ { AMDGPU_USER_PIXENC_AUTO, "auto" }, + { AMDGPU_USER_PIXENC_RGB, "rgb" }, + { AMDGPU_USER_PIXENC_YCBCR444, "ycbcr444" }, +}; + +bool amdgpu_user_pixenc_from_name( + enum amdgpu_user_pixenc *user_pixenc, + const char *pixenc_name) +{ + /* user_pixenc only modified if name found */ + bool found = false; + if (pixenc_name && (*pixenc_name != '\0')) { + const int sz = ARRAY_SIZE(amdgpu_user_pixenc_list); + int i; + for (i = 0; !found && i < sz; ++i) { + if (strcmp(pixenc_name, amdgpu_user_pixenc_list[i].name) == 0) { + *user_pixenc = amdgpu_user_pixenc_list[i].type; + found = true; + } + } + } + return found; +} + int amdgpu_display_modeset_create_props(struct amdgpu_device *adev) { int sz; @@ -666,6 +691,14 @@ int amdgpu_display_modeset_create_props(struct amdgpu_device *adev) "abm level", 0, 4); if (!adev->mode_info.abm_level_property) return -ENOMEM; + + sz = ARRAY_SIZE(amdgpu_user_pixenc_list); + adev->mode_info.pixel_encoding_property = + drm_property_create_enum(adev->ddev, 0, + "pixel encoding", + amdgpu_user_pixenc_list, sz); + if (!adev->mode_info.pixel_encoding_property) + return -ENOMEM; } return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h index 3620b24785e1..72f82e3f4e32 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h @@ -45,4 +45,8 @@ amdgpu_display_user_framebuffer_create(struct drm_device *dev, struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd); +bool amdgpu_user_pixenc_from_name( + enum amdgpu_user_pixenc *user_pixenc, + const char *pixenc_name); + #endif diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h index 37ba07e2feb5..3c21ecf3d259 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h @@ -123,6 +123,12 @@ enum amdgpu_flip_status { AMDGPU_FLIP_SUBMITTED }; +enum amdgpu_user_pixenc { + AMDGPU_USER_PIXENC_AUTO, + AMDGPU_USER_PIXENC_RGB, + AMDGPU_USER_PIXENC_YCBCR444 +}; + #define AMDGPU_MAX_I2C_BUS 16 /* amdgpu gpio-based i2c @@ -333,6 +339,8 @@ struct amdgpu_mode_info { struct drm_property *dither_property; /* Adaptive Backlight Modulation (power feature) */ struct drm_property *abm_level_property; + /* User HDMI pixel encoding override */ + struct drm_property *pixel_encoding_property; /* hardcoded DFP edid from BIOS */ struct edid *bios_hardcoded_edid; int bios_hardcoded_edid_size; 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 b51c527a3f0d..8901271d1902 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -158,7 +158,6 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector); static int amdgpu_dm_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state, bool nonblock); - static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state); static int amdgpu_dm_atomic_check(struct drm_device *dev, @@ -172,6 +171,13 @@ static bool amdgpu_dm_psr_enable(struct dc_stream_state *stream); static bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream); static bool amdgpu_dm_psr_disable(struct dc_stream_state *stream); +/** + * DOC: pixel_encoding (string) + * Specify the initial pixel encoding used by a connector. + */ +static char amdgpu_pixel_encoding[MAX_INPUT]; +MODULE_PARM_DESC(pixel_encoding, "Override pixel encoding"); +module_param_string(pixel_encoding, amdgpu_pixel_encoding, sizeof(amdgpu_pixel_encoding), 0444); /* * dm_vblank_get_counter @@ -4214,6 +4220,103 @@ static bool adjust_colour_depth_from_display_info( return false; } + +/* convert an amdgpu_user_pixenc to a dc_pixel_encoding */ +static bool drm_prop_to_dc_pixel_encoding( + enum dc_pixel_encoding *dc_pixenc, + enum amdgpu_user_pixenc user_pixenc) +{ + bool ret = false; + switch(user_pixenc) { + case AMDGPU_USER_PIXENC_AUTO: + *dc_pixenc = PIXEL_ENCODING_UNDEFINED; + ret = true; + break; + case AMDGPU_USER_PIXENC_RGB: + *dc_pixenc = PIXEL_ENCODING_RGB; + ret = true; + break; + case AMDGPU_USER_PIXENC_YCBCR444: + *dc_pixenc = PIXEL_ENCODING_YCBCR444; + ret = true; + break; + default: + break; + } + return ret; +} + + +/* convert an dc_pixel_encoding to a amdgpu_user_pixenc */ +static enum amdgpu_user_pixenc dc_pixel_encoding_to_drm_prop( + enum dc_pixel_encoding pixel_encoding) +{ + enum amdgpu_user_pixenc user_pixenc = AMDGPU_USER_PIXENC_AUTO; + switch(pixel_encoding) { + case PIXEL_ENCODING_RGB: + user_pixenc = AMDGPU_USER_PIXENC_RGB; + break; + case PIXEL_ENCODING_YCBCR444: + user_pixenc = AMDGPU_USER_PIXENC_YCBCR444; + break; + default: + break; + } + return user_pixenc; +} + +/* + * Tries to read 'pixel_encoding' from the pixel_encoding DRM property on + * 'state'. Returns true if a supported, acceptable, non-undefined value is + * found; false otherwise. Only modifies 'pixel_encoding' if returning true. + */ +bool get_connector_state_pixel_encoding( + enum dc_pixel_encoding *pixel_encoding, + const struct drm_connector_state *state, + u32 color_formats) +{ + bool ret = false; + struct dm_connector_state *dm_state; + + if (!(dm_state = to_dm_connector_state(state))) { + return false; + } + + /* check encoding is supported */ + switch (dm_state->pixel_encoding) { + case PIXEL_ENCODING_RGB: + ret = (color_formats & DRM_COLOR_FORMAT_RGB444); + break; + case PIXEL_ENCODING_YCBCR444: + ret = (color_formats & DRM_COLOR_FORMAT_YCRCB444); + break; + default: + break; + } + + if(ret) + *pixel_encoding = dm_state->pixel_encoding; + + return ret; +} + +/* + * Writes 'pixel_encoding' to the pixel_encoding DRM property on 'state', if + * the enum value is valid and supported; otherwise writes + * PIXEL_ENCODING_UNDEFINED which corresponds to the "auto" property state. + */ +void set_connector_state_pixel_encoding( + const struct drm_connector_state *state, + enum dc_pixel_encoding pixel_encoding) +{ + struct dm_connector_state *dm_state; + + if (!(dm_state = to_dm_connector_state(state))) + return; + + dm_state->pixel_encoding = pixel_encoding; +} + static void fill_stream_properties_from_drm_display_mode( struct dc_stream_state *stream, const struct drm_display_mode *mode_in, @@ -4235,18 +4338,20 @@ static void fill_stream_properties_from_drm_display_mode( timing_out->h_border_right = 0; timing_out->v_border_top = 0; timing_out->v_border_bottom = 0; - /* TODO: un-hardcode */ - if (drm_mode_is_420_only(info, mode_in) - && stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) - timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420; - else if (drm_mode_is_420_also(info, mode_in) - && aconnector->force_yuv420_output) - timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420; - else if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444) - && stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) - timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444; - else - timing_out->pixel_encoding = PIXEL_ENCODING_RGB; + + if (!get_connector_state_pixel_encoding(&timing_out->pixel_encoding, + connector_state, connector->display_info.color_formats)) { + /* auto-select a pixel encoding */ + if (drm_mode_is_420_only(info, mode_in) && stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) + timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420; + else if (drm_mode_is_420_also(info, mode_in) && aconnector->force_yuv420_output) + timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420; + else if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444) + && stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) + timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444; + else + timing_out->pixel_encoding = PIXEL_ENCODING_RGB; + } timing_out->timing_3d_format = TIMING_3D_FORMAT_NONE; timing_out->display_color_depth = convert_color_depth_from_display_info( @@ -4294,6 +4399,7 @@ static void fill_stream_properties_from_drm_display_mode( stream->out_transfer_func->type = TF_TYPE_PREDEFINED; stream->out_transfer_func->tf = TRANSFER_FUNCTION_SRGB; + if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A) { if (!adjust_colour_depth_from_display_info(timing_out, info) && drm_mode_is_420_also(info, mode_in) && @@ -4302,6 +4408,9 @@ static void fill_stream_properties_from_drm_display_mode( adjust_colour_depth_from_display_info(timing_out, info); } } + + /* write back final choice of pixel encoding */ + set_connector_state_pixel_encoding(connector_state, timing_out->pixel_encoding); } static void fill_audio_info(struct audio_info *audio_info, @@ -4818,6 +4927,9 @@ int amdgpu_dm_connector_atomic_set_property(struct drm_connector *connector, } else if (property == adev->mode_info.abm_level_property) { dm_new_state->abm_level = val; ret = 0; + } else if (property == adev->mode_info.pixel_encoding_property) { + if(drm_prop_to_dc_pixel_encoding(&dm_new_state->pixel_encoding, val)) + ret = 0; } return ret; @@ -4863,6 +4975,9 @@ int amdgpu_dm_connector_atomic_get_property(struct drm_connector *connector, } else if (property == adev->mode_info.abm_level_property) { *val = dm_state->abm_level; ret = 0; + } else if (property == adev->mode_info.pixel_encoding_property) { + *val = dc_pixel_encoding_to_drm_prop(dm_state->pixel_encoding); + ret = 0; } return ret; @@ -4912,6 +5027,50 @@ static void amdgpu_dm_connector_destroy(struct drm_connector *connector) kfree(connector); } + +/* + * Returns the default pixel encoding, depending on the pixel_encoding + * module parameter if given. + */ +static enum dc_pixel_encoding pixel_encoding_reset( + const struct drm_connector *connector) +{ + char *param_str = NULL; + char *param_str_ptr = NULL; + char *param_item = NULL; + char *param_item_sep = NULL; + char *pixenc_mode = NULL; + enum amdgpu_user_pixenc user_pixenc; + enum dc_pixel_encoding pixel_encoding = PIXEL_ENCODING_UNDEFINED; + + /* default in absence of module param */ + if (*amdgpu_pixel_encoding == '\0') + return PIXEL_ENCODING_UNDEFINED; + + /* decode param string */ + param_str = kstrdup(amdgpu_pixel_encoding, GFP_KERNEL); + param_str_ptr = param_str; + while ((param_item = strsep(¶m_str_ptr, ","))) { + param_item_sep = strchr(param_item, ':'); + if (param_item_sep) { + if (strncmp(connector->name, param_item, + param_item_sep - param_item) == 0) { + pixenc_mode = param_item_sep + 1; + break; + } + } else + pixenc_mode = param_item; + } + + /* compare mode string and set */ + if (amdgpu_user_pixenc_from_name(&user_pixenc, pixenc_mode)) { + drm_prop_to_dc_pixel_encoding(&pixel_encoding, user_pixenc); + } + + kfree(param_str); + return pixel_encoding; +} + void amdgpu_dm_connector_funcs_reset(struct drm_connector *connector) { struct dm_connector_state *state = @@ -4934,7 +5093,7 @@ void amdgpu_dm_connector_funcs_reset(struct drm_connector *connector) state->pbn = 0; if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) state->abm_level = amdgpu_dm_abm_level; - + state->pixel_encoding = pixel_encoding_reset(connector); __drm_atomic_helper_connector_reset(connector, &state->base); } } @@ -4961,6 +5120,7 @@ amdgpu_dm_connector_atomic_duplicate_state(struct drm_connector *connector) new_state->underscan_vborder = state->underscan_vborder; new_state->vcpi_slots = state->vcpi_slots; new_state->pbn = state->pbn; + new_state->pixel_encoding = state->pixel_encoding; return &new_state->base; } @@ -6175,6 +6335,7 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector) return amdgpu_dm_connector->num_modes; } + void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm, struct amdgpu_dm_connector *aconnector, int connector_type, @@ -6263,6 +6424,12 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm, if (adev->dm.hdcp_workqueue) drm_connector_attach_content_protection_property(&aconnector->base, true); #endif + + if (adev->mode_info.pixel_encoding_property) { + drm_object_attach_property(&aconnector->base.base, + adev->mode_info.pixel_encoding_property, 0); + DRM_DEBUG_DRIVER("amdgpu: attached pixel encoding drm property"); + } } } @@ -7332,6 +7499,37 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev, /*TODO Handle EINTR, reenable IRQ*/ } +static void update_stream_for_pixel_encoding( + struct dc_stream_update *stream_update, + struct drm_connector *connector, + struct dm_crtc_state *dm_old_crtc_state, + struct dm_crtc_state *dm_new_crtc_state, + struct dm_connector_state *dm_new_con_state) +{ + struct amdgpu_dm_connector *aconnector = + to_amdgpu_dm_connector(connector); + struct dc_stream_state *new_stream = NULL; + if (aconnector) + new_stream = create_validate_stream_for_sink( + aconnector, + &dm_new_crtc_state->base.mode, + dm_new_con_state, + dm_old_crtc_state->stream); + if (new_stream) { + dm_new_crtc_state->stream->timing = + new_stream->timing; + stream_update->timing_for_pixel_encoding = + &dm_new_crtc_state->stream->timing; + + dm_new_crtc_state->stream->output_color_space = + new_stream->output_color_space; + stream_update->output_color_space = + &dm_new_crtc_state->stream->output_color_space; + + dc_stream_release(new_stream); + } +} + /** * amdgpu_dm_atomic_commit_tail() - AMDgpu DM's commit tail implementation. * @state: The atomic state to commit @@ -7508,7 +7706,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) struct dc_stream_update stream_update; struct dc_info_packet hdr_packet; struct dc_stream_status *status = NULL; - bool abm_changed, hdr_changed, scaling_changed; + bool abm_changed, hdr_changed, scaling_changed, pixenc_changed; memset(&dummy_updates, 0, sizeof(dummy_updates)); memset(&stream_update, 0, sizeof(stream_update)); @@ -7534,7 +7732,10 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) hdr_changed = is_hdr_metadata_different(old_con_state, new_con_state); - if (!scaling_changed && !abm_changed && !hdr_changed) + pixenc_changed = dm_new_con_state->pixel_encoding != + dm_old_con_state->pixel_encoding; + + if (!scaling_changed && !abm_changed && !hdr_changed && !pixenc_changed) continue; stream_update.stream = dm_new_crtc_state->stream; @@ -7557,6 +7758,13 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) stream_update.hdr_static_metadata = &hdr_packet; } + if (pixenc_changed) { + update_stream_for_pixel_encoding(&stream_update, + connector, + dm_old_crtc_state, dm_new_crtc_state, + dm_new_con_state); + } + status = dc_stream_get_status(dm_new_crtc_state->stream); WARN_ON(!status); WARN_ON(!status->plane_count); @@ -7911,7 +8119,6 @@ static int dm_update_crtc_state(struct amdgpu_display_manager *dm, &new_crtc_state->mode, dm_new_conn_state, dm_old_crtc_state->stream); - /* * we can have no stream on ACTION_SET if a display * was disconnected during S3, in this case it is not an @@ -8578,6 +8785,12 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, if (dm_old_con_state->abm_level != dm_new_con_state->abm_level) new_crtc_state->connectors_changed = true; + + if (dm_old_con_state->pixel_encoding != + dm_new_con_state->pixel_encoding) { + new_crtc_state->connectors_changed = true; + new_crtc_state->mode_changed = true; + } } #if defined(CONFIG_DRM_AMD_DC_DCN) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index dd1559c743c2..e46bdd279d0f 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -450,6 +450,7 @@ struct dm_connector_state { uint8_t abm_level; int vcpi_slots; uint64_t pbn; + enum dc_pixel_encoding pixel_encoding; }; #define to_dm_connector_state(x)\ diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 92eb1ca1634f..24743ee9d9da 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1881,6 +1881,11 @@ static enum surface_update_type check_update_surfaces_for_stream( if (stream_update->output_csc_transform || stream_update->output_color_space) su_flags->bits.out_csc = 1; + + if (stream_update->timing_for_pixel_encoding) { + su_flags->bits.pixel_encoding = 1; + elevate_update_type(&overall_type, UPDATE_TYPE_FULL); + } } for (i = 0 ; i < surface_count; i++) { @@ -2183,6 +2188,10 @@ static void copy_stream_update_to_stream(struct dc *dc, update->dsc_config = NULL; } } + + if (update->timing_for_pixel_encoding) { + stream->timing = *update->timing_for_pixel_encoding; + } } static void commit_planes_do_stream_update(struct dc *dc, @@ -2211,7 +2220,8 @@ static void commit_planes_do_stream_update(struct dc *dc, if ((stream_update->hdr_static_metadata && !stream->use_dynamic_meta) || stream_update->vrr_infopacket || stream_update->vsc_infopacket || - stream_update->vsp_infopacket) { + stream_update->vsp_infopacket || + stream_update->timing_for_pixel_encoding) { resource_build_info_frame(pipe_ctx); dc->hwss.update_info_frame(pipe_ctx); } diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h index d9888f316da6..0e1ef24d8855 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_stream.h +++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h @@ -126,6 +126,7 @@ union stream_update_flags { uint32_t gamut_remap:1; uint32_t wb_update:1; uint32_t dsc_changed : 1; + uint32_t pixel_encoding:1; } bits; uint32_t raw; @@ -262,6 +263,7 @@ struct dc_stream_update { struct dc_writeback_update *wb_update; struct dc_dsc_config *dsc_config; + struct dc_crtc_timing *timing_for_pixel_encoding; #if defined(CONFIG_DRM_AMD_DC_DCN3_0) struct dc_transfer_func *func_shaper; struct dc_3dlut *lut3d_func; -- 2.26.2 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
