>-----Original Message----- >From: dri-devel [mailto:dri-devel-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 17/40] misc/mei/hdcp: Enabling the HDCP authentication > >Request to ME to configure a port as authenticated. > >On Success, ME FW will mark th eport as authenticated and provides HDCP chipper Rectify "the". Also it should be HDCP cipher. >of the port with the encryption keys. > >Enabling the Authentication can be requested once the all stages of HDCP2.2 >authentication is completed by interating with ME FW. Typo in interacting. > >Only after this stage, driver can enable the HDCP encryption for the port, through >HW registers. > >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 | 54 >++++++++++++++++++++++++++++++++++++++++ > include/linux/mei_hdcp.h | 7 ++++++ > 2 files changed, 61 insertions(+) > >diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c >b/drivers/misc/mei/hdcp/mei_hdcp.c >index 68eb5267a8e7..b5d1da41f1d9 100644 >--- a/drivers/misc/mei/hdcp/mei_hdcp.c >+++ b/drivers/misc/mei/hdcp/mei_hdcp.c >@@ -632,6 +632,60 @@ int mei_verify_mprime(struct mei_cl_device *cldev, >struct mei_hdcp_data *data, } EXPORT_SYMBOL(mei_verify_mprime); > >+/** >+ * mei_enable_hdcp_authentication: >+ * Function to request ME FW to mark a port as authenticated. >+ * >+ * @cldev : Pointer for mei client device >+ * @data : Intel HW specific Data >+ * >+ * Returns 0 on Success, <0 on Failure >+ */ >+int mei_enable_hdcp_authentication(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data) >+{ >+ struct wired_cmd_enable_auth_in enable_auth_in = { { 0 } }; >+ struct wired_cmd_enable_auth_out enable_auth_out = { { 0 } }; >+ struct device *dev; >+ ssize_t byte; >+ >+ if (!data) >+ return -EINVAL; >+ >+ dev = &cldev->dev; >+ >+ enable_auth_in.header.api_version = HDCP_API_VERSION; >+ enable_auth_in.header.command_id = WIRED_ENABLE_AUTH; >+ enable_auth_in.header.status = ME_HDCP_STATUS_SUCCESS; >+ enable_auth_in.header.buffer_len = >WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN; >+ >+ enable_auth_in.port.integrated_port_type = data->port_type; >+ enable_auth_in.port.physical_port = data->port; >+ enable_auth_in.stream_type = data->streams[0].stream_type; Check for data->streams. >+ >+ byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in, >+ sizeof(enable_auth_in)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_send failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ byte = mei_cldev_recv(cldev, (u8 *)&enable_auth_out, >+ sizeof(enable_auth_out)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_recv failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ if (enable_auth_out.header.status != ME_HDCP_STATUS_SUCCESS) { >+ dev_dbg(dev, "ME cmd 0x%08X failed. status: 0x%X\n", >+ WIRED_ENABLE_AUTH, >enable_auth_out.header.status); >+ return -1; >+ } Leave a blank line here. >+ return 0; >+} >+EXPORT_SYMBOL(mei_enable_hdcp_authentication); >+ > 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 >dbc216e13f97..2366d0741abe 100644 >--- a/include/linux/mei_hdcp.h >+++ b/include/linux/mei_hdcp.h >@@ -136,6 +136,8 @@ mei_repeater_check_flow_prepare_ack(struct >mei_cl_device *cldev, > struct hdcp2_rep_send_ack *rep_send_ack); >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); > #else > static int mei_cldev_register_notify(struct notifier_block *nb) { @@ -209,5 >+211,10 @@ int mei_verify_mprime(struct mei_cl_device *cldev, struct >mei_hdcp_data *data, { > return -ENODEV; > } >+static inline int mei_enable_hdcp_authentication(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 > >_______________________________________________ >dri-devel mailing list >dri-devel@xxxxxxxxxxxxxxxxxxxxx >https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
