>-----Original Message-----
>From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf Of
>Ramalingam C
>Sent: Tuesday, April 3, 2018 7:28 PM
>To: intel-gfx@lists.freedesktop.org; dri-de...@lists.freedesktop.org;
>seanp...@chromium.org; dan...@ffwll.ch; ch...@chris-wilson.co.uk;
>jani.nik...@linux.intel.com; Winkler, Tomas <tomas.wink...@intel.com>;
>Usyskin, Alexander <alexander.usys...@intel.com>
>Cc: Vivi, Rodrigo <rodrigo.v...@intel.com>
>Subject: [Intel-gfx] [PATCH v3 18/40] 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]
>
>Signed-off-by: Ramalingam C <ramalinga...@intel.com>
>---
> drivers/misc/mei/hdcp/mei_hdcp.c | 55
>++++++++++++++++++++++++++++++++++++++++
> include/linux/mei_hdcp.h | 7 +++++
> 2 files changed, 62 insertions(+)
>
>diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c
>b/drivers/misc/mei/hdcp/mei_hdcp.c
>index b5d1da41f1d9..ed402f1f2f64 100644
>--- a/drivers/misc/mei/hdcp/mei_hdcp.c
>+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
>@@ -686,6 +686,61 @@ int mei_enable_hdcp_authentication(struct
>mei_cl_device *cldev, } EXPORT_SYMBOL(mei_enable_hdcp_authentication);
>
>+/**
>+ * me_close_hdcp_session:
Typo in me. Should be mei.
>+ * 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
>+ */
>+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. %d\n", (int)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. %d\n", (int)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 -1;
>+ }
>+ return 0;
>+}
>+EXPORT_SYMBOL(mei_close_hdcp_session);
>+
> void mei_cldev_state_notify_clients(struct mei_cl_device *cldev, bool
> enabled) {
> if (enabled)
>diff --git a/include/linux/mei_hdcp.h b/include/linux/mei_hdcp.h index
>2366d0741abe..55cbde890571 100644
>--- a/include/linux/mei_hdcp.h
>+++ b/include/linux/mei_hdcp.h
>@@ -138,6 +138,8 @@ int mei_verify_mprime(struct mei_cl_device *cldev,
>struct mei_hdcp_data *data,
> struct hdcp2_rep_stream_ready *stream_ready); int
>mei_enable_hdcp_authentication(struct mei_cl_device *cldev,
> struct mei_hdcp_data *data);
>+int mei_close_hdcp_session(struct mei_cl_device *cldev,
>+ struct mei_hdcp_data *data);
> #else
> static int mei_cldev_register_notify(struct notifier_block *nb) { @@ -216,5
>+218,10 @@ static inline int mei_enable_hdcp_authentication(struct
>mei_cl_device *cldev, {
> return -ENODEV;
> }
>+static inline int mei_close_hdcp_session(struct mei_cl_device *cldev,
>+ struct mei_hdcp_data *data)
>+{
>+ return -ENODEV;
>+}
> #endif /* defined (CONFIG_INTEL_MEI_HDCP) */ #endif /* defined
>(_LINUX_MEI_HDCP_H) */
>--
>2.7.4
>
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