@@ -678,6 +678,60 @@ static int mei_enable_hdcp_authentication(struct mei_cl_device *cldev,
return 0;
}
+/*
+ * mei_close_hdcp_session:
+ * Function to close the Wired HDCP Tx session of ME FW.
+ * This also disables the authenticated state of the port.
+ *
+ * data : Intel HW specific Data
+ *
+ * Returns 0 on Success, <0 on Failure
+ */
+static int mei_close_hdcp_session(struct mei_cl_device *cldev,
+ struct mei_hdcp_data *data)
+{
+ struct wired_cmd_close_session_in session_close_in = { { 0 } };
+ struct wired_cmd_close_session_out session_close_out = { { 0 } };
+ struct device *dev;
+ ssize_t byte;
+
+ if (!data)
+ return -EINVAL;
+
+ dev = &cldev->dev;
+
+ session_close_in.header.api_version = HDCP_API_VERSION;
+ session_close_in.header.command_id = WIRED_CLOSE_SESSION;
+ session_close_in.header.status = ME_HDCP_STATUS_SUCCESS;
+ session_close_in.header.buffer_len =
+ WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN;
+
+ session_close_in.port.integrated_port_type = data->port_type;
+ session_close_in.port.physical_port = data->port;
+
+ byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
+ sizeof(session_close_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&session_close_out,
+ sizeof(session_close_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (session_close_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "Session Close Failed. status: 0x%X\n",
+ session_close_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
struct i915_hdcp_component_ops mei_hdcp_component_ops = {
.owner = THIS_MODULE,
.initiate_hdcp2_session = mei_initiate_hdcp2_session,
@@ -693,7 +747,7 @@ struct i915_hdcp_component_ops mei_hdcp_component_ops = {
.verify_mprime = mei_verify_mprime,
.enable_hdcp_authentication =
mei_enable_hdcp_authentication,
- .close_hdcp_session = NULL,
+ .close_hdcp_session = mei_close_hdcp_session,
};
static int mei_hdcp_component_bind(struct device *mei_kdev,
Request the ME to terminate the HDCP2.2 session for a port. On Success, ME FW will mark the intel port as Deauthenticated and terminate the wired HDCP2.2 Tx session started due to the cmd WIRED_INITIATE_HDCP2_SESSION. v2: Rebased. v3: cldev is passed as first parameter [Tomas] Redundant comments and cast are removed [Tomas] v4: %zd for ssize_t [Alexander] %s/return -1/return -EIO [Alexander] Style and typos fixed [Uma] v5: Extra line is removed. Signed-off-by: Ramalingam C <ramalingam.c@intel.com> --- drivers/misc/mei/hdcp/mei_hdcp.c | 56 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-)