>-----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 08/40] misc/mei/hdcp: Initiate Wired HDCP2.2 Tx >Session > >Request ME FW to start the HDCP2.2 session for a intel port. Change "a" to "an". >Prepares payloads for command WIRED_INITIATE_HDCP2_SESSION and sent to "sent" to "sends" >ME FW. > >On Success, ME FW will start a HDCP2.2 session for the port and provides the >content for HDCP2.2 AKE_Init message. > >v2: > Rebased. >v3: > cldev is add as a separate parameter [Tomas] > Redundant comment and typecast are removed [Tomas] > >Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx> >--- > drivers/misc/mei/hdcp/mei_hdcp.c | 68 >++++++++++++++++++++++++++++++++++++++++ > include/linux/mei_hdcp.h | 11 +++++++ > 2 files changed, 79 insertions(+) > >diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c >b/drivers/misc/mei/hdcp/mei_hdcp.c >index 2811a25f8c57..7caee0947761 100644 >--- a/drivers/misc/mei/hdcp/mei_hdcp.c >+++ b/drivers/misc/mei/hdcp/mei_hdcp.c >@@ -33,9 +33,77 @@ > #include <linux/mei_cl_bus.h> > #include <linux/notifier.h> > #include <linux/mei_hdcp.h> >+#include <drm/drm_connector.h> >+ >+#include "mei_hdcp.h" > > static BLOCKING_NOTIFIER_HEAD(mei_cldev_notifier_list); > >+/** >+ * mei_initiate_hdcp2_session: >+ * Function to start a Wired HDCP2.2 Tx Session with ME FW >+ * >+ * @cldev : Pointer for mei client device >+ * @data : Intel HW specific Data >+ * @ake_data : ptr to store AKE_Init >+ * >+ * Returns 0 on Success, <0 on Failure. >+ */ >+int mei_initiate_hdcp2_session(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_ake_init *ake_data) { >+ struct wired_cmd_initiate_hdcp2_session_in session_init_in = { { 0 } }; >+ struct wired_cmd_initiate_hdcp2_session_out >+ session_init_out = { { 0 } }; >+ struct device *dev; >+ ssize_t byte; >+ >+ if (!data || !ake_data) >+ return -EINVAL; >+ >+ dev = &cldev->dev; >+ >+ session_init_in.header.api_version = HDCP_API_VERSION; >+ session_init_in.header.command_id = >WIRED_INITIATE_HDCP2_SESSION; >+ session_init_in.header.status = ME_HDCP_STATUS_SUCCESS; >+ session_init_in.header.buffer_len = >+ > WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN; >+ >+ session_init_in.port.integrated_port_type = data->port_type; >+ session_init_in.port.physical_port = data->port; >+ session_init_in.protocol = (uint8_t)data->protocol; >+ >+ byte = mei_cldev_send(cldev, (u8 *)&session_init_in, >+ sizeof(session_init_in)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_send failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ byte = mei_cldev_recv(cldev, (u8 *)&session_init_out, >+ sizeof(session_init_out)); >+ if (byte < 0) { >+ dev_dbg(dev, "mei_cldev_recv failed. %d\n", (int)byte); >+ return byte; >+ } >+ >+ if (session_init_out.header.status != ME_HDCP_STATUS_SUCCESS) { >+ dev_dbg(dev, "ME cmd 0x%08X Failed. Status: 0x%X\n", >+ WIRED_INITIATE_HDCP2_SESSION, >+ session_init_out.header.status); >+ return -1; >+ } >+ >+ ake_data->msg_id = HDCP_2_2_AKE_INIT; >+ ake_data->tx_caps = session_init_out.tx_caps; >+ memcpy(ake_data->r_tx, session_init_out.r_tx, We should check for ake_data->r_tx for NULL as well before attempting this copy. >+ sizeof(session_init_out.r_tx)); >+ >+ return 0; >+} >+EXPORT_SYMBOL(mei_initiate_hdcp2_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 >634c1a5bdf1e..bb4f27d3abcb 100644 >--- a/include/linux/mei_hdcp.h >+++ b/include/linux/mei_hdcp.h >@@ -28,6 +28,7 @@ > #define _LINUX_MEI_HDCP_H > > #include <linux/mei_cl_bus.h> >+#include <drm/drm_hdcp.h> > > enum mei_cldev_state { > MEI_CLDEV_DISABLED, >@@ -105,6 +106,9 @@ struct mei_hdcp_data { #ifdef >CONFIG_INTEL_MEI_HDCP int mei_cldev_register_notify(struct notifier_block >*nb); int mei_cldev_unregister_notify(struct notifier_block *nb); >+int mei_initiate_hdcp2_session(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_ake_init *ake_data); > #else > static int mei_cldev_register_notify(struct notifier_block *nb) { @@ -114,5 >+118,12 @@ static int mei_cldev_unregister_notify(struct notifier_block *nb) { > return -ENODEV; > } >+static inline >+int mei_initiate_hdcp2_session(struct mei_cl_device *cldev, >+ struct mei_hdcp_data *data, >+ struct hdcp2_ake_init *ake_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
