diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/drm_connector.c | 49 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_dp_helper.c | 71 |
2 files changed, 118 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 00e40a26a800..3d48ad1c3682 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -850,7 +850,7 @@ static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = { DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = { - { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ + { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ }; @@ -867,7 +867,7 @@ static const struct drm_prop_enum_list drm_tv_select_enum_list[] = { DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { - { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ + { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ @@ -876,6 +876,19 @@ static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = { DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, drm_tv_subconnector_enum_list) +static const struct drm_prop_enum_list drm_dp_subconnector_enum_list[] = { + { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */ + { DRM_MODE_SUBCONNECTOR_VGA, "VGA" }, /* DP */ + { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DP */ + { DRM_MODE_SUBCONNECTOR_HDMIA, "HDMI" }, /* DP */ + { DRM_MODE_SUBCONNECTOR_DisplayPort, "DP" }, /* DP */ + { DRM_MODE_SUBCONNECTOR_Wireless, "Wireless" }, /* DP */ + { DRM_MODE_SUBCONNECTOR_Native, "Native" }, /* DP */ +}; + +DRM_ENUM_NAME_FN(drm_get_dp_subconnector_name, + drm_dp_subconnector_enum_list) + static const struct drm_prop_enum_list hdmi_colorspaces[] = { /* For Default case, driver will set the colorspace */ { DRM_MODE_COLORIMETRY_DEFAULT, "Default" }, @@ -1217,6 +1230,14 @@ static const struct drm_prop_enum_list dp_colorspaces[] = { * can also expose this property to external outputs, in which case they * must support "None", which should be the default (since external screens * have a built-in scaler). + * + * subconnector: + * This property is used by DVI-I, TVout and DisplayPort to indicate different + * connector subtypes. Enum values more or less match with those from main + * connector types. + * For DVI-I and TVout there is also a matching property "select subconnector" + * allowing to switch between signal types. + * DP subconnector corresponds to a downstream port. */ int drm_connector_create_standard_properties(struct drm_device *dev) @@ -1306,6 +1327,30 @@ int drm_mode_create_dvi_i_properties(struct drm_device *dev) EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); /** + * drm_connector_attach_dp_subconnector_property - create subconnector property for DP + * @connector: drm_connector to attach property + * + * Called by a driver when DP connector is created. + */ +void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector) +{ + struct drm_mode_config *mode_config = &connector->dev->mode_config; + + if (!mode_config->dp_subconnector_property) + mode_config->dp_subconnector_property = + drm_property_create_enum(connector->dev, + DRM_MODE_PROP_IMMUTABLE, + "subconnector", + drm_dp_subconnector_enum_list, + ARRAY_SIZE(drm_dp_subconnector_enum_list)); + + drm_object_attach_property(&connector->base, + mode_config->dp_subconnector_property, + DRM_MODE_SUBCONNECTOR_Unknown); +} +EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property); + +/** * DOC: HDMI connector properties * * content type (HDMI specific): diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index a3c82e726057..4c21cf69dad5 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -597,6 +597,77 @@ void drm_dp_downstream_debug(struct seq_file *m, } EXPORT_SYMBOL(drm_dp_downstream_debug); +/** + * drm_dp_subconnector_type() - get DP branch device type + * + */ +enum drm_mode_subconnector +drm_dp_subconnector_type(const u8 dpcd[DP_RECEIVER_CAP_SIZE], + const u8 port_cap[4]) +{ + int type; + if (!drm_dp_is_branch(dpcd)) + return DRM_MODE_SUBCONNECTOR_Native; + /* DP 1.0 approach */ + if (dpcd[DP_DPCD_REV] == DP_DPCD_REV_10) { + type = dpcd[DP_DOWNSTREAMPORT_PRESENT] & + DP_DWN_STRM_PORT_TYPE_MASK; + + switch (type) { + case DP_DWN_STRM_PORT_TYPE_TMDS: + /* Can be HDMI or DVI-D, DVI-D is a safer option */ + return DRM_MODE_SUBCONNECTOR_DVID; + case DP_DWN_STRM_PORT_TYPE_ANALOG: + /* Can be VGA or DVI-A, VGA is more popular */ + return DRM_MODE_SUBCONNECTOR_VGA; + case DP_DWN_STRM_PORT_TYPE_DP: + return DRM_MODE_SUBCONNECTOR_DisplayPort; + case DP_DWN_STRM_PORT_TYPE_OTHER: + default: + return DRM_MODE_SUBCONNECTOR_Unknown; + } + } + type = port_cap[0] & DP_DS_PORT_TYPE_MASK; + + switch (type) { + case DP_DS_PORT_TYPE_DP: + case DP_DS_PORT_TYPE_DP_DUALMODE: + return DRM_MODE_SUBCONNECTOR_DisplayPort; + case DP_DS_PORT_TYPE_VGA: + return DRM_MODE_SUBCONNECTOR_VGA; + case DP_DS_PORT_TYPE_DVI: + return DRM_MODE_SUBCONNECTOR_DVID; + case DP_DS_PORT_TYPE_HDMI: + return DRM_MODE_SUBCONNECTOR_HDMIA; + case DP_DS_PORT_TYPE_WIRELESS: + return DRM_MODE_SUBCONNECTOR_Wireless; + case DP_DS_PORT_TYPE_NON_EDID: + default: + return DRM_MODE_SUBCONNECTOR_Unknown; + } +} +EXPORT_SYMBOL(drm_dp_subconnector_type); + +/** + * drm_mode_set_dp_subconnector_property - set subconnector for DP connector + * + * Called by a driver on every detect event. + */ +void drm_dp_set_subconnector_property(struct drm_connector *connector, + enum drm_connector_status status, + const u8 *dpcd, + const u8 port_cap[4]) +{ + enum drm_mode_subconnector subconnector = DRM_MODE_SUBCONNECTOR_Unknown; + + if (status == connector_status_connected) + subconnector = drm_dp_subconnector_type(dpcd, port_cap); + drm_object_property_set_value(&connector->base, + connector->dev->mode_config.dp_subconnector_property, + subconnector); +} +EXPORT_SYMBOL(drm_dp_set_subconnector_property); + /* * I2C-over-AUX implementation */ |