diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/display/drm_hdmi_state_helper.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_atomic.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_uapi.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_connector.c | 88 |
4 files changed, 97 insertions, 1 deletions
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index 1623b96cd97c..57c66beec5bc 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -25,6 +25,7 @@ void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector, new_conn_state->max_bpc = max_bpc; new_conn_state->max_requested_bpc = max_bpc; + new_conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_AUTO; } EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset); @@ -332,7 +333,8 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, if (ret) return ret; - if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc || + if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb || + old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc || old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) { struct drm_crtc *crtc = new_conn_state->crtc; struct drm_crtc_state *crtc_state; diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 26f9e525c0a0..3e57d98d8418 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1145,6 +1145,8 @@ static void drm_atomic_connector_print_state(struct drm_printer *p, if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) { + drm_printf(p, "\tbroadcast_rgb=%s\n", + drm_hdmi_connector_get_broadcast_rgb_name(state->hdmi.broadcast_rgb)); drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc); drm_printf(p, "\toutput_format=%s\n", drm_hdmi_connector_get_output_format_name(state->hdmi.output_format)); diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index fc16fddee5c5..22bbb2d83e30 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -776,6 +776,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector, state->max_requested_bpc = val; } else if (property == connector->privacy_screen_sw_state_property) { state->privacy_screen_sw_state = val; + } else if (property == connector->broadcast_rgb_property) { + state->hdmi.broadcast_rgb = val; } else if (connector->funcs->atomic_set_property) { return connector->funcs->atomic_set_property(connector, state, property, val); @@ -859,6 +861,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector, *val = state->max_requested_bpc; } else if (property == connector->privacy_screen_sw_state_property) { *val = state->privacy_screen_sw_state; + } else if (property == connector->broadcast_rgb_property) { + *val = state->hdmi.broadcast_rgb; } else if (connector->funcs->atomic_get_property) { return connector->funcs->atomic_get_property(connector, state, property, val); diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 39e9ff6c4f61..debb5a77ad89 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1212,6 +1212,29 @@ static const u32 dp_colorspaces = BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) | BIT(DRM_MODE_COLORIMETRY_BT2020_YCC); +static const struct drm_prop_enum_list broadcast_rgb_names[] = { + { DRM_HDMI_BROADCAST_RGB_AUTO, "Automatic" }, + { DRM_HDMI_BROADCAST_RGB_FULL, "Full" }, + { DRM_HDMI_BROADCAST_RGB_LIMITED, "Limited 16:235" }, +}; + +/* + * drm_hdmi_connector_get_broadcast_rgb_name - Return a string for HDMI connector RGB broadcast selection + * @broadcast_rgb: Broadcast RGB selection to compute name of + * + * Returns: the name of the Broadcast RGB selection, or NULL if the type + * is not valid. + */ +const char * +drm_hdmi_connector_get_broadcast_rgb_name(enum drm_hdmi_broadcast_rgb broadcast_rgb) +{ + if (broadcast_rgb >= ARRAY_SIZE(broadcast_rgb_names)) + return NULL; + + return broadcast_rgb_names[broadcast_rgb].name; +} +EXPORT_SYMBOL(drm_hdmi_connector_get_broadcast_rgb_name); + static const char * const output_format_str[] = { [HDMI_COLORSPACE_RGB] = "RGB", [HDMI_COLORSPACE_YUV420] = "YUV 4:2:0", @@ -1708,6 +1731,38 @@ EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property); /** * DOC: HDMI connector properties * + * Broadcast RGB (HDMI specific) + * Indicates the Quantization Range (Full vs Limited) used. The color + * processing pipeline will be adjusted to match the value of the + * property, and the Infoframes will be generated and sent accordingly. + * + * This property is only relevant if the HDMI output format is RGB. If + * it's one of the YCbCr variant, it will be ignored. + * + * The CRTC attached to the connector must be configured by user-space to + * always produce full-range pixels. + * + * The value of this property can be one of the following: + * + * Automatic: + * The quantization range is selected automatically based on the + * mode according to the HDMI specifications (HDMI 1.4b - Section + * 6.6 - Video Quantization Ranges). + * + * Full: + * Full quantization range is forced. + * + * Limited 16:235: + * Limited quantization range is forced. Unlike the name suggests, + * this works for any number of bits-per-component. + * + * Property values other than Automatic can result in colors being off (if + * limited is selected but the display expects full), or a black screen + * (if full is selected but the display expects limited). + * + * Drivers can set up this property by calling + * drm_connector_attach_broadcast_rgb_property(). + * * content type (HDMI specific): * Indicates content type setting to be used in HDMI infoframes to indicate * content type for the external device, so that it adjusts its display @@ -2571,6 +2626,39 @@ int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *conn EXPORT_SYMBOL(drm_connector_attach_hdr_output_metadata_property); /** + * drm_connector_attach_broadcast_rgb_property - attach "Broadcast RGB" property + * @connector: connector to attach the property on. + * + * This is used to add support for forcing the RGB range on a connector + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_connector_attach_broadcast_rgb_property(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_property *prop; + + prop = connector->broadcast_rgb_property; + if (!prop) { + prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, + "Broadcast RGB", + broadcast_rgb_names, + ARRAY_SIZE(broadcast_rgb_names)); + if (!prop) + return -EINVAL; + + connector->broadcast_rgb_property = prop; + } + + drm_object_attach_property(&connector->base, prop, + DRM_HDMI_BROADCAST_RGB_AUTO); + + return 0; +} +EXPORT_SYMBOL(drm_connector_attach_broadcast_rgb_property); + +/** * drm_connector_attach_colorspace_property - attach "Colorspace" property * @connector: connector to attach the property on. * |