DRM connector property is created to represent the content protection
state of the connector and to configure the same.
Content protection states defined:
DRM_MODE_CONTENT_PROTECTION_UNSUPPORTED - Unsupported
DRM_MODE_CONTENT_PROTECTION_DISABLE - Disabled
DRM_MODE_CONTENT_PROTECTION_ENABLE - Enabled
v2: Redesigned the property to match with CP needs of CrOS [Sean].
v3: Renamed the state names. Header is removed [sean].
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/drm_connector.c | 14 ++++++++++++++
include/drm/drm_mode_config.h | 5 +++++
include/uapi/drm/drm_mode.h | 5 +++++
3 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 5cd61af..d6aaa08 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -617,6 +617,13 @@ static const struct drm_prop_enum_list drm_link_status_enum_list[] = {
};
DRM_ENUM_NAME_FN(drm_get_link_status_name, drm_link_status_enum_list)
+static const struct drm_prop_enum_list drm_cp_enum_list[] = {
+ { DRM_MODE_CONTENT_PROTECTION_UNSUPPORTED, "Unsupported" },
+ { DRM_MODE_CONTENT_PROTECTION_DISABLE, "Disabled" },
+ { DRM_MODE_CONTENT_PROTECTION_ENABLE, "Enabled" },
+};
+DRM_ENUM_NAME_FN(drm_get_cp_status_name, drm_cp_enum_list)
+
/**
* drm_display_info_set_bus_formats - set the supported bus formats
* @info: display info to store bus formats in
@@ -789,6 +796,13 @@ int drm_connector_create_standard_properties(struct drm_device *dev)
return -ENOMEM;
dev->mode_config.link_status_property = prop;
+ prop = drm_property_create_enum(dev, 0, "Content Protection",
+ drm_cp_enum_list,
+ ARRAY_SIZE(drm_cp_enum_list));
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.cp_property = prop;
+
return 0;
}
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 4298171..7acb8b2 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -538,6 +538,11 @@ struct drm_mode_config {
*/
struct drm_property *link_status_property;
/**
+ * @cp_property: Default connector property for CP
+ * of a connector
+ */
+ struct drm_property *cp_property;
+ /**
* @plane_type_property: Default plane property to differentiate
* CURSOR, PRIMARY and OVERLAY legacy uses of planes.
*/
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 403339f..554a770 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -127,6 +127,11 @@ extern "C" {
#define DRM_MODE_LINK_STATUS_GOOD 0
#define DRM_MODE_LINK_STATUS_BAD 1
+/* Content Protection options */
+#define DRM_MODE_CONTENT_PROTECTION_UNSUPPORTED 0
+#define DRM_MODE_CONTENT_PROTECTION_DISABLE 1
+#define DRM_MODE_CONTENT_PROTECTION_ENABLE 2
+
/*
* DRM_MODE_ROTATE_<degrees>
*
--
2.7.4
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