>-----Original Message----- >From: Intel-gfx [mailto:intel-gfx-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 11/40] misc/mei/hdcp: Store the HDCP Pairing info > >Provides Pairing info to ME to store. > >Pairing is a process to fast track the subsequent authentication with the same >HDCP sink. > >On Success, received HDCP pairing info is stored in non-volatile memory of ME. > >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 | 61 >++++++++++++++++++++++++++++++++++++++++ > include/linux/mei_hdcp.h | 10 +++++++ > 2 files changed, 71 insertions(+) > >diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c >b/drivers/misc/mei/hdcp/mei_hdcp.c >index fa548310de7a..60afdd0cee79 100644 >--- a/drivers/misc/mei/hdcp/mei_hdcp.c >+++ b/drivers/misc/mei/hdcp/mei_hdcp.c >@@ -244,6 +244,67 @@ int mei_verify_hprime(struct mei_cl_device *cldev, >struct mei_hdcp_data *data, } EXPORT_SYMBOL(mei_verify_hprime); > >+/** Drop the extra *, unless you really love it :) >+ * mei_store_pairing_info: >+ * Function to store pairing info received from panel >+ * >+ * @cldev : Pointer for mei client device >+ * @data : Intel HW specific Data >+ * @pairing_info : Pointer for AKE_Send_Pairing_Info >+ * >+ * Returns 0 on Success, <0 on Failure >+ */ >+ >+int mei_store_pairing_info(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_ake_send_pairing_info *pairing_info) { >+ struct wired_cmd_ake_send_pairing_info_in pairing_info_in = { { 0 } }; >+ struct wired_cmd_ake_send_pairing_info_out pairing_info_out = { { 0 } }; >+ struct device *dev; >+ ssize_t byte; >+ >+ if (!data || !pairing_info) >+ return -EINVAL; >+ >+ dev = &cldev->dev; >+ >+ pairing_info_in.header.api_version = HDCP_API_VERSION; >+ pairing_info_in.header.command_id = >WIRED_AKE_SEND_PAIRING_INFO; >+ pairing_info_in.header.status = ME_HDCP_STATUS_SUCCESS; >+ pairing_info_in.header.buffer_len = >+ > WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN; >+ >+ pairing_info_in.port.integrated_port_type = data->port_type; >+ pairing_info_in.port.physical_port = data->port; >+ >+ memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km, Validate pairing_info->e_kh_km for NULL. >+ sizeof(pairing_info_in.e_kh_km)); >+ >+ byte = mei_cldev_send(cldev, (u8 *)&pairing_info_in, >+ sizeof(pairing_info_in)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_send failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ byte = mei_cldev_recv(cldev, (u8 *)&pairing_info_out, >+ sizeof(pairing_info_out)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_recv failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ if (pairing_info_out.header.status != ME_HDCP_STATUS_SUCCESS) { >+ dev_dbg(dev, "ME cmd 0x%08X failed. Status: 0x%X\n", >+ WIRED_AKE_SEND_PAIRING_INFO, >+ pairing_info_out.header.status); >+ return -1; >+ } Leave a blank line here. >+ return 0; >+} >+EXPORT_SYMBOL(mei_store_pairing_info); >+ > 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 >00bfde251ba4..be16e49d8018 100644 >--- a/include/linux/mei_hdcp.h >+++ b/include/linux/mei_hdcp.h >@@ -118,6 +118,9 @@ mei_verify_receiver_cert_prepare_km(struct >mei_cl_device *cldev, > size_t *msg_sz); > int mei_verify_hprime(struct mei_cl_device *cldev, struct mei_hdcp_data *data, > struct hdcp2_ake_send_hprime *rx_hprime); >+int mei_store_pairing_info(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_ake_send_pairing_info *pairing_info); > #else > static int mei_cldev_register_notify(struct notifier_block *nb) { @@ -150,5 >+153,12 @@ int mei_verify_hprime(struct mei_cl_device *cldev, struct >mei_hdcp_data *data, { > return -ENODEV; > } >+static inline >+int mei_store_pairing_info(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_ake_send_pairing_info *pairing_info) { >+ 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
