>-----Original Message----- >From: dri-devel [mailto:dri-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of >Ramalingam C >Sent: Tuesday, April 3, 2018 7:27 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 12/40] misc/mei/hdcp: Initiate Locality check > >Requests ME to start the second stage of HDCP2.2 authentication, called Locality >Check. > >On Success, ME FW will provide LC_Init message to send to hdcp sink. > >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 | 56 >++++++++++++++++++++++++++++++++++++++++ > include/linux/mei_hdcp.h | 10 +++++++ > 2 files changed, 66 insertions(+) > >diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c >b/drivers/misc/mei/hdcp/mei_hdcp.c >index 60afdd0cee79..9bd7e66a91e4 100644 >--- a/drivers/misc/mei/hdcp/mei_hdcp.c >+++ b/drivers/misc/mei/hdcp/mei_hdcp.c >@@ -305,6 +305,62 @@ int mei_store_pairing_info(struct mei_cl_device *cldev, >} EXPORT_SYMBOL(mei_store_pairing_info); > >+/** >+ * mei_initiate_locality_check: >+ * Function to prepare LC_Init. >+ * >+ * @cldev : Pointer for mei client device >+ * @data : Intel HW specific Data >+ * @hdcp2_lc_init : Pointer for storing LC_Init >+ * >+ * Returns 0 on Success, <0 on Failure >+ */ >+int mei_initiate_locality_check(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_lc_init *lc_init_data) { >+ struct wired_cmd_init_locality_check_in lc_init_in = { { 0 } }; >+ struct wired_cmd_init_locality_check_out lc_init_out = { { 0 } }; >+ struct device *dev; >+ ssize_t byte; >+ >+ if (!data || !lc_init_data) >+ return -EINVAL; >+ >+ dev = &cldev->dev; >+ >+ lc_init_in.header.api_version = HDCP_API_VERSION; >+ lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK; >+ lc_init_in.header.status = ME_HDCP_STATUS_SUCCESS; >+ lc_init_in.header.buffer_len = >+WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN; >+ >+ lc_init_in.port.integrated_port_type = data->port_type; >+ lc_init_in.port.physical_port = data->port; >+ >+ byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_send failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ byte = mei_cldev_recv(cldev, (u8 *)&lc_init_out, sizeof(lc_init_out)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_recv failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ if (lc_init_out.header.status != ME_HDCP_STATUS_SUCCESS) { >+ dev_dbg(dev, "ME cmd 0x%08X Failed. status: 0x%X\n", >+ WIRED_INIT_LOCALITY_CHECK, >lc_init_out.header.status); >+ return -1; >+ } >+ >+ lc_init_data->msg_id = HDCP_2_2_LC_INIT; >+ memcpy(lc_init_data->r_n, lc_init_out.r_n, HDCP_2_2_RN_LEN); Check for validity of lc_init_data->r_n. Also, leave a blank line. >+ return 0; >+} >+EXPORT_SYMBOL(mei_initiate_locality_check); >+ > 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 >be16e49d8018..d9c4cac0b276 100644 >--- a/include/linux/mei_hdcp.h >+++ b/include/linux/mei_hdcp.h >@@ -121,6 +121,9 @@ int mei_verify_hprime(struct mei_cl_device *cldev, struct >mei_hdcp_data *data, int mei_store_pairing_info(struct mei_cl_device *cldev, > struct mei_hdcp_data *data, > struct hdcp2_ake_send_pairing_info *pairing_info); >+int mei_initiate_locality_check(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_lc_init *lc_init_data); > #else > static int mei_cldev_register_notify(struct notifier_block *nb) { @@ -160,5 >+163,12 @@ int mei_store_pairing_info(struct mei_cl_device *cldev, { > return -ENODEV; > } >+static inline >+int mei_initiate_locality_check(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_lc_init *lc_init_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
