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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2022 Samsung Electronics Co., Ltd.
*
* Samsung DisplayPort driver.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/smc.h>
#include <asm/cacheflush.h>
#include <linux/soc/samsung/exynos-smc.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqreturn.h>
#include <linux/dma-mapping.h>
#include "exynos-hdcp-interface.h"
#include "auth-control.h"
#include "hdcp-log.h"
#include "selftest.h"
#include "teeif.h"
#define EXYNOS_HDCP_DEV_NAME "hdcp2"
static struct miscdevice hdcp;
static ssize_t hdcp_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
hdcp_info("Kicking off selftest\n");
hdcp_protocol_self_test();
return len;
}
static ssize_t hdcp_read(struct file *filp, char __user *buf,
size_t count, loff_t *f_pos)
{
return 0;
}
static int exynos_hdcp_probe(struct platform_device *pdev)
{
return 0;
}
static const struct of_device_id exynos_hdcp_of_match_table[] = {
{ .compatible = "samsung,exynos-hdcp", },
{ },
};
static struct platform_driver exynos_hdcp_driver = {
.probe = exynos_hdcp_probe,
.driver = {
.name = "exynos-hdcp",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(exynos_hdcp_of_match_table),
}
};
static int __init hdcp_init(void)
{
int ret;
hdcp_info("hdcp2 driver init\n");
ret = misc_register(&hdcp);
if (ret) {
hdcp_err("hdcp can't register misc on minor=%d\n",
MISC_DYNAMIC_MINOR);
return ret;
}
hdcp_tee_init();
hdcp_auth_worker_init();
return platform_driver_register(&exynos_hdcp_driver);
}
static void __exit hdcp_exit(void)
{
misc_deregister(&hdcp);
hdcp_tee_close();
hdcp_auth_worker_deinit();
platform_driver_unregister(&exynos_hdcp_driver);
}
static const struct file_operations hdcp_fops = {
.owner = THIS_MODULE,
.write = hdcp_write,
.read = hdcp_read,
};
static struct miscdevice hdcp = {
.minor = MISC_DYNAMIC_MINOR,
.name = EXYNOS_HDCP_DEV_NAME,
.fops = &hdcp_fops,
};
module_init(hdcp_init);
module_exit(hdcp_exit);
MODULE_DESCRIPTION("Exynos Secure hdcp driver");
MODULE_AUTHOR("<hakmin_1.kim@samsung.com>");
MODULE_LICENSE("GPL v2");
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