>-----Original Message----- >From: Intel-gfx [mailto:intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of >Ramalingam C >Sent: Tuesday, April 3, 2018 7:28 PM >To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; >seanpaul@xxxxxxxxxxxx; daniel@xxxxxxxx; chris@xxxxxxxxxxxxxxxxxx; >jani.nikula@xxxxxxxxxxxxxxx; Winkler, Tomas <tomas.winkler@xxxxxxxxx>; >Usyskin, Alexander <alexander.usyskin@xxxxxxxxx> >Cc: Vivi, Rodrigo <rodrigo.vivi@xxxxxxxxx> >Subject: [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 <ramalingam.c@xxxxxxxxx> >--- > 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 > >_______________________________________________ >Intel-gfx mailing list >Intel-gfx@xxxxxxxxxxxxxxxxxxxxx >https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
