>-----Original Message-----
>From: C, Ramalingam
>Sent: Saturday, July 14, 2018 8:45 AM
>To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
>daniel@xxxxxxxx; seanpaul@xxxxxxxxxxxx; Winkler, Tomas
><tomas.winkler@xxxxxxxxx>; Usyskin, Alexander <alexander.usyskin@xxxxxxxxx>;
>Shankar, Uma <uma.shankar@xxxxxxxxx>
>Cc: Sharma, Shashank <shashank.sharma@xxxxxxxxx>; C, Ramalingam
><ramalingam.c@xxxxxxxxx>
>Subject: [PATCH v6 35/35] misc/mei/hdcp: Closing wired HDCP2.2 Tx Session
>
>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.
>v6:
> No change.
>
Looks ok to me.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
>Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
>---
> drivers/misc/mei/hdcp/mei_hdcp.c | 56
>+++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 55 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c
>b/drivers/misc/mei/hdcp/mei_hdcp.c
>index fdfdfb1724ec..032b2823fcf3 100644
>--- a/drivers/misc/mei/hdcp/mei_hdcp.c
>+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
>@@ -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,
>--
>2.7.4
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