| Message ID | 1522763873-23041-5-git-send-email-ramalingam.c@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
>-----Original Message----- >From: dri-devel [mailto:dri-devel-bounces@lists.freedesktop.org] On Behalf Of >Ramalingam C >Sent: Tuesday, April 3, 2018 7:27 PM >To: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; >seanpaul@chromium.org; daniel@ffwll.ch; chris@chris-wilson.co.uk; >jani.nikula@linux.intel.com; Winkler, Tomas <tomas.winkler@intel.com>; >Usyskin, Alexander <alexander.usyskin@intel.com> >Cc: Vivi, Rodrigo <rodrigo.vivi@intel.com> >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@intel.com> >Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> >--- > 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@intel.com> >+ */ >+ >+#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@lists.freedesktop.org >https://lists.freedesktop.org/mailman/listinfo/dri-devel
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@intel.com> + */ + +#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");