drm function is defined and exported to update a connector's
content protection property state and to generate a uevent along
with it.
v2:
Update only when state is different from old one.
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/drm_hdcp.c | 16 ++++++++++++++++
include/drm/drm_hdcp.h | 2 ++
2 files changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c
index a0960507e4ff..5640c4e744fe 100644
--- a/drivers/gpu/drm/drm_hdcp.c
+++ b/drivers/gpu/drm/drm_hdcp.c
@@ -415,3 +415,19 @@ int drm_connector_attach_content_protection_property(
return 0;
}
EXPORT_SYMBOL(drm_connector_attach_content_protection_property);
+
+void drm_hdcp_update_content_protection(struct drm_connector *connector,
+ u64 val)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_connector_state *state = connector->state;
+
+ WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
+ if (state->content_protection == val)
+ return;
+
+ state->content_protection = val;
+ drm_sysfs_connector_status_event(connector,
+ dev->mode_config.content_protection_property);
+}
+EXPORT_SYMBOL(drm_hdcp_update_content_protection);
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
index 145c81ba1e09..9457c7ec0d37 100644
--- a/include/drm/drm_hdcp.h
+++ b/include/drm/drm_hdcp.h
@@ -304,4 +304,6 @@ struct drm_connector;
bool drm_hdcp_ksvs_revocated(struct drm_device *dev, u8 *ksvs, u32 ksv_count);
int drm_connector_attach_content_protection_property(
struct drm_connector *connector, bool hdcp_content_type);
+void drm_hdcp_update_content_protection(struct drm_connector *connector,
+ u64 val);
#endif
--
2.19.1
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