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// SPDX-License-Identifier: (GPL-2.0)
/*
* Copyright © 2019 Intel Corporation
*
* Mei_hdcp.c: HDCP client driver for mei bus
*
* Author:
* Ramalingam C <ramalingam.c@intel.com>
*/
/**
* DOC: MEI_HDCP Client Driver
*
* This is a client driver to the mei_bus to make the HDCP2.2 services of
* ME FW available for the interested consumers like I915.
*
* This module will act as a translation layer between HDCP protocol
* implementor(I915) and ME FW by translating HDCP2.2 authentication
* messages to ME FW command payloads and vice versa.
*/
#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)
{
return mei_cldev_disable(cldev);
}
#define MEI_UUID_HDCP GUID_INIT(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("GPL");
MODULE_DESCRIPTION("MEI HDCP");
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