On hotplug/detection of connector Panel's HDCP capability is probed. On hot unplug of connector HDCP is diabled, if it has beed enabled.
Signed-off-by: Ramalingam C ramalingam.c@intel.com --- drivers/gpu/drm/drm_hdcp.c | 24 ++++++++++++++++++++++++ include/drm/drm_hdcp.h | 9 +++++++++ 2 files changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c index ab80370..89c7c5e 100644 --- a/drivers/gpu/drm/drm_hdcp.c +++ b/drivers/gpu/drm/drm_hdcp.c @@ -82,6 +82,30 @@ void drm_hdcp_late_init(struct drm_connector *connector) }
/** + * @drm_hdcp_connector_state_change_handler: + * + * Handler for the Connector state change. + */ +void drm_hdcp_connector_state_change_handler(struct drm_connector *connector) +{ + if (!connector->hdcp) + return; + + if (connector->status == connector_status_connected) { + + /* Probes the panel capability */ + drm_hdcp_late_init(connector); + } else { + drm_hdcp_disable(connector); + connector->hdcp->ver_support_on_panel = 0; + + /* Removing support for all versions */ + connector->hdcp_state &= ~DRM_HDCP_VER_SUPPORT_MASK; + } +} +EXPORT_SYMBOL(drm_hdcp_connector_state_change_handler); + +/** * @drm_hdcp_init: * Initialization of the HDCP stack of the DRM * diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index e8136ef..89879ff 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -157,8 +157,17 @@ struct drm_hdcp { DRM_HDCP_LINK_INTEGRITY_FAILED | \ DRM_HDCP_REAUTH_REQUESTED)
+#define DRM_HDCP_VER_SUPPORT_SHIFT 12 +#define DRM_HDCP_VER_SUPPORT_MASK (0xFFULL<< \ + DRM_HDCP_VER_SUPPORT_SHIFT) +#define DRM_HDCP_TYPE_SHIFT 4 +#define DRM_HDCP_TYPE_MASK (0xFFULL<<DRM_HDCP_TYPE_SHIFT) + /* Functions exported */ extern int drm_hdcp_init(struct drm_connector *connector, struct drm_hdcp *hdcp, uint8_t spec_supported); +extern void drm_hdcp_connector_state_change_handler( + struct drm_connector *connector); + #endif /* __DRM_HDCP_H__ */