>-----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 04/40] misc/mei/hdcp: Client driver for HDCP application > >ME FW is contributes a vital role in HDCP2.2 authentication. Remove "is". >HDCP2.2 driver needs to communicate to ME FW for each step of the >HDCP2.2 authentication. > >ME FW prepare and HDCP2.2 authentication parameters and encrypt them as per Drop "and HDCP2.2" here. >spec. With such parameter Driver prepares HDCP2.2 auth messages and >communicate with HDCP2.2 sink. > >Similarly HDCP2. sink's response is shared with ME FW for decrypt and Drop "HDCP2.". Its implicit, no need to call multiple times. >verification. > >Once All the steps of HDCP2.2 authentications are complete on driver's request Change "All to all". Drop "s" from authentication. Add a "," after complete. >ME FW will configure the port as authenticated and supply the HDCP keys to the >Gen HW for encryption. > >Only after this stage HDCP2.2 driver can start the HDCP2.2 encryption for a port. > >ME FW is interfaced to kernel through MEI Bus Driver. To obtain the >HDCP2.2 services from the ME FW through MEI Bus driver MEI Client Driver is >developed. > >v2: > hdcp files are moved to drivers/misc/mei/hdcp/ [Tomas] >v3: > Squashed the Kbuild support [Tomas] > UUID renamed and Module License is modified [Tomas] > drv_data is set to null at remove [Tomas] > >Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx> >Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx> >--- > drivers/misc/mei/Kconfig | 6 ++++ > drivers/misc/mei/Makefile | 2 ++ > drivers/misc/mei/hdcp/Makefile | 6 ++++ > drivers/misc/mei/hdcp/mei_hdcp.c | 74 >++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 88 insertions(+) > create mode 100644 drivers/misc/mei/hdcp/Makefile create mode 100644 >drivers/misc/mei/hdcp/mei_hdcp.c > >diff --git a/drivers/misc/mei/Kconfig b/drivers/misc/mei/Kconfig index >c49e1d2269af..90977132d1e2 100644 >--- a/drivers/misc/mei/Kconfig >+++ b/drivers/misc/mei/Kconfig >@@ -43,3 +43,9 @@ config INTEL_MEI_TXE > > Supported SoCs: > Intel Bay Trail >+ >+config INTEL_MEI_HDCP >+ tristate "Intel HDCP2.2 services of ME Interface" >+ depends on INTEL_MEI && DRM_I915 >+ help >+ MEI Support for HDCP2.2 Services on Intel SoCs. >diff --git a/drivers/misc/mei/Makefile b/drivers/misc/mei/Makefile index >cd6825afa8e1..e64d1212fb85 100644 >--- a/drivers/misc/mei/Makefile >+++ b/drivers/misc/mei/Makefile >@@ -23,3 +23,5 @@ mei-txe-objs += hw-txe.o > > mei-$(CONFIG_EVENT_TRACING) += mei-trace.o CFLAGS_mei-trace.o = -I$(src) >+ >+obj-$(CONFIG_INTEL_MEI_HDCP) += hdcp/ >diff --git a/drivers/misc/mei/hdcp/Makefile b/drivers/misc/mei/hdcp/Makefile >new file mode 100644 index 000000000000..75ac50203223 >--- /dev/null >+++ b/drivers/misc/mei/hdcp/Makefile >@@ -0,0 +1,6 @@ >+# SPDX-License-Identifier: GPL-2.0 >+# >+# Makefile - HDCP client driver for Intel MEI Bus Driver. >+# Copyright (c) 2010-2014, Intel Corporation. >+# >+obj-$(CONFIG_INTEL_MEI_HDCP) += mei_hdcp.o >diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c >b/drivers/misc/mei/hdcp/mei_hdcp.c >new file mode 100644 >index 000000000000..b334615728a7 >--- /dev/null >+++ b/drivers/misc/mei/hdcp/mei_hdcp.c >@@ -0,0 +1,74 @@ >+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ >+/* >+ * Copyright © 2017-2018 Intel Corporation >+ * >+ * Mei_hdcp.c: HDCP client driver for mei bus >+ * >+ * Permission is hereby granted, free of charge, to any person >+obtaining a >+ * copy of this software and associated documentation files (the >+"Software"), >+ * to deal in the Software without restriction, including without >+limitation >+ * the rights to use, copy, modify, merge, publish, distribute, >+sublicense, >+ * and/or sell copies of the Software, and to permit persons to whom >+the >+ * Software is furnished to do so, subject to the following conditions: >+ * >+ * The above copyright notice and this permission notice (including the >+next >+ * paragraph) shall be included in all copies or substantial portions >+of the >+ * Software. >+ * >+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, >+EXPRESS OR >+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF >+MERCHANTABILITY, >+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO >EVENT >+SHALL >+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, >DAMAGES OR >+OTHER >+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, >+ARISING >+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR >OTHER >+ * DEALINGS IN THE SOFTWARE. >+ * >+ * Authors: >+ * Ramalingam C <ramalingam.c@xxxxxxxxx> >+ */ >+ >+#include <linux/module.h> >+#include <linux/slab.h> >+#include <linux/uuid.h> >+#include <linux/mei_cl_bus.h> >+ >+static int mei_hdcp_probe(struct mei_cl_device *cldev, >+ const struct mei_cl_device_id *id) { >+ int ret; >+ >+ ret = mei_cldev_enable(cldev); >+ if (ret < 0) >+ dev_err(&cldev->dev, "mei_cldev_enable Failed. %d\n", ret); >+ >+ return ret; >+} >+ >+static int mei_hdcp_remove(struct mei_cl_device *cldev) { >+ mei_cldev_set_drvdata(cldev, NULL); >+ return mei_cldev_disable(cldev); >+} >+ >+#define MEI_UUID_HDCP UUID_LE(0xB638AB7E, 0x94E2, 0x4EA2, >0xA5, \ >+ 0x52, 0xD1, 0xC5, 0x4B, \ >+ 0x62, 0x7F, 0x04) >+ >+static struct mei_cl_device_id mei_hdcp_tbl[] = { >+ { .uuid = MEI_UUID_HDCP, .version = MEI_CL_VERSION_ANY }, >+ { } >+}; >+MODULE_DEVICE_TABLE(mei, mei_hdcp_tbl); >+ >+static struct mei_cl_driver mei_hdcp_driver = { >+ .id_table = mei_hdcp_tbl, >+ .name = KBUILD_MODNAME, >+ .probe = mei_hdcp_probe, >+ .remove = mei_hdcp_remove, >+}; >+ >+module_mei_cl_driver(mei_hdcp_driver); >+ >+MODULE_AUTHOR("Intel Corporation"); >+MODULE_LICENSE("Dual BSD/GPL"); >+MODULE_DESCRIPTION("HDCP"); >-- >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
