| Message ID | 1518617638-21684-6-git-send-email-ramalingam.c@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
> > ME FW is contributes a vital role in HDCP2.2 authentication. > 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 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 > verification. > > Once All the steps of HDCP2.2 authentications are complete on driver's > request 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. > > Signed-off-by: Ramalingam C <ramalingam.c@intel.com> > Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> > --- > drivers/misc/mei/mei_hdcp.c | 80 > +++++++++++++++++++++++++++++++++++++++++++++ > drivers/misc/mei/mei_hdcp.h | 32 ++++++++++++++++++ > 2 files changed, 112 insertions(+) > create mode 100644 drivers/misc/mei/mei_hdcp.c create mode 100644 > drivers/misc/mei/mei_hdcp.h > > diff --git a/drivers/misc/mei/mei_hdcp.c b/drivers/misc/mei/mei_hdcp.c new > file mode 100644 index 000000000000..aa211763e520 > --- /dev/null > +++ b/drivers/misc/mei/mei_hdcp.c This should go under 'drivers/misc/mei/hdcp/' we don't want more code directly under mei > @@ -0,0 +1,80 @@ > +/* > + * Copyright © 2017 Intel Corporation > + * > + * Mei_hdcp.c: client driver for mei bus driver > + * > + * 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 "mei_hdcp.h" > + > +struct mei_hdcp mei_hdcp; > + > +static int mei_hdcp_probe(struct mei_cl_device *cldev, > + const struct mei_cl_device_id *id) { > + int ret; > + > + mei_hdcp.cldev = cldev; > + mei_cldev_set_drvdata(cldev, &mei_hdcp); > + > + 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_disable(cldev); > + return 0; > +} > + > +#define WIDI_HECI_CLIENT_GUID UUID_LE(0xB638AB7E, 0x94E2, > 0x4EA2, 0xA5, \ > + 0x52, 0xD1, 0xC5, 0x4B, \ > + 0x62, 0x7F, 0x04) > +#define MEI_HDCP2_2_UUID WIDI_HECI_CLIENT_GUID > + > +static struct mei_cl_device_id mei_hdcp_tbl[] = { > + { .uuid = MEI_HDCP2_2_UUID, .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("GPL"); > +MODULE_DESCRIPTION("HDCP"); > diff --git a/drivers/misc/mei/mei_hdcp.h b/drivers/misc/mei/mei_hdcp.h > new file mode 100644 index 000000000000..c06c0d767c4f > --- /dev/null > +++ b/drivers/misc/mei/mei_hdcp.h > @@ -0,0 +1,32 @@ > +/* > + * Copyright (c) 2017 Intel Corporation > + * > + * 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. > + */ > +#ifndef __MEI_HDCP_H__ > +#define __MEI_HDCP_H__ > + > +#include <linux/mei_cl_bus.h> > + > +struct mei_hdcp { > + struct mei_cl_device *cldev; > +}; > + > +#endif /* __MEI_HDCP_H__ */ > -- > 2.7.4
On Wednesday 14 February 2018 08:24 PM, Winkler, Tomas wrote: >> ME FW is contributes a vital role in HDCP2.2 authentication. >> 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 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 >> verification. >> >> Once All the steps of HDCP2.2 authentications are complete on driver's >> request 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. >> >> Signed-off-by: Ramalingam C <ramalingam.c@intel.com> >> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> >> --- >> drivers/misc/mei/mei_hdcp.c | 80 >> +++++++++++++++++++++++++++++++++++++++++++++ >> drivers/misc/mei/mei_hdcp.h | 32 ++++++++++++++++++ >> 2 files changed, 112 insertions(+) >> create mode 100644 drivers/misc/mei/mei_hdcp.c create mode 100644 >> drivers/misc/mei/mei_hdcp.h >> >> diff --git a/drivers/misc/mei/mei_hdcp.c b/drivers/misc/mei/mei_hdcp.c new >> file mode 100644 index 000000000000..aa211763e520 >> --- /dev/null >> +++ b/drivers/misc/mei/mei_hdcp.c > This should go under 'drivers/misc/mei/hdcp/' we don't want more code directly under mei Thanks for the review Tomas. Sure I will move it. --Ram > > >> @@ -0,0 +1,80 @@ >> +/* >> + * Copyright © 2017 Intel Corporation >> + * >> + * Mei_hdcp.c: client driver for mei bus driver >> + * >> + * 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 "mei_hdcp.h" >> + >> +struct mei_hdcp mei_hdcp; >> + >> +static int mei_hdcp_probe(struct mei_cl_device *cldev, >> + const struct mei_cl_device_id *id) { >> + int ret; >> + >> + mei_hdcp.cldev = cldev; >> + mei_cldev_set_drvdata(cldev, &mei_hdcp); >> + >> + 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_disable(cldev); >> + return 0; >> +} >> + >> +#define WIDI_HECI_CLIENT_GUID UUID_LE(0xB638AB7E, 0x94E2, >> 0x4EA2, 0xA5, \ >> + 0x52, 0xD1, 0xC5, 0x4B, \ >> + 0x62, 0x7F, 0x04) >> +#define MEI_HDCP2_2_UUID WIDI_HECI_CLIENT_GUID >> + >> +static struct mei_cl_device_id mei_hdcp_tbl[] = { >> + { .uuid = MEI_HDCP2_2_UUID, .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("GPL"); >> +MODULE_DESCRIPTION("HDCP"); >> diff --git a/drivers/misc/mei/mei_hdcp.h b/drivers/misc/mei/mei_hdcp.h >> new file mode 100644 index 000000000000..c06c0d767c4f >> --- /dev/null >> +++ b/drivers/misc/mei/mei_hdcp.h >> @@ -0,0 +1,32 @@ >> +/* >> + * Copyright (c) 2017 Intel Corporation >> + * >> + * 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. >> + */ >> +#ifndef __MEI_HDCP_H__ >> +#define __MEI_HDCP_H__ >> + >> +#include <linux/mei_cl_bus.h> >> + >> +struct mei_hdcp { >> + struct mei_cl_device *cldev; >> +}; >> + >> +#endif /* __MEI_HDCP_H__ */ >> -- >> 2.7.4
diff --git a/drivers/misc/mei/mei_hdcp.c b/drivers/misc/mei/mei_hdcp.c new file mode 100644 index 000000000000..aa211763e520 --- /dev/null +++ b/drivers/misc/mei/mei_hdcp.c @@ -0,0 +1,80 @@ +/* + * Copyright © 2017 Intel Corporation + * + * Mei_hdcp.c: client driver for mei bus driver + * + * 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 "mei_hdcp.h" + +struct mei_hdcp mei_hdcp; + +static int mei_hdcp_probe(struct mei_cl_device *cldev, + const struct mei_cl_device_id *id) +{ + int ret; + + mei_hdcp.cldev = cldev; + mei_cldev_set_drvdata(cldev, &mei_hdcp); + + 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_disable(cldev); + return 0; +} + +#define WIDI_HECI_CLIENT_GUID UUID_LE(0xB638AB7E, 0x94E2, 0x4EA2, 0xA5, \ + 0x52, 0xD1, 0xC5, 0x4B, \ + 0x62, 0x7F, 0x04) +#define MEI_HDCP2_2_UUID WIDI_HECI_CLIENT_GUID + +static struct mei_cl_device_id mei_hdcp_tbl[] = { + { .uuid = MEI_HDCP2_2_UUID, .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("GPL"); +MODULE_DESCRIPTION("HDCP"); diff --git a/drivers/misc/mei/mei_hdcp.h b/drivers/misc/mei/mei_hdcp.h new file mode 100644 index 000000000000..c06c0d767c4f --- /dev/null +++ b/drivers/misc/mei/mei_hdcp.h @@ -0,0 +1,32 @@ +/* + * Copyright (c) 2017 Intel Corporation + * + * 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. + */ +#ifndef __MEI_HDCP_H__ +#define __MEI_HDCP_H__ + +#include <linux/mei_cl_bus.h> + +struct mei_hdcp { + struct mei_cl_device *cldev; +}; + +#endif /* __MEI_HDCP_H__ */