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 <ramalinga...@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__ */
--
2.7.4
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