1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2016, NVIDIA CORPORATION.
4 */
5
6#include <common.h>
7#include <dm.h>
8#include <log.h>
9#include <malloc.h>
10#include <misc.h>
11#include <reset-uclass.h>
12#include <asm/arch-tegra/bpmp_abi.h>
13
14static int tegra186_reset_common(struct reset_ctl *reset_ctl,
15				 enum mrq_reset_commands cmd)
16{
17	struct mrq_reset_request req;
18	int ret;
19
20	req.cmd = cmd;
21	req.reset_id = reset_ctl->id;
22
23	ret = misc_call(reset_ctl->dev->parent, MRQ_RESET, &req, sizeof(req),
24			NULL, 0);
25	if (ret < 0)
26		return ret;
27
28	return 0;
29}
30
31static int tegra186_reset_assert(struct reset_ctl *reset_ctl)
32{
33	debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
34	      reset_ctl->dev, reset_ctl->id);
35
36	return tegra186_reset_common(reset_ctl, CMD_RESET_ASSERT);
37}
38
39static int tegra186_reset_deassert(struct reset_ctl *reset_ctl)
40{
41	debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
42	      reset_ctl->dev, reset_ctl->id);
43
44	return tegra186_reset_common(reset_ctl, CMD_RESET_DEASSERT);
45}
46
47struct reset_ops tegra186_reset_ops = {
48	.rst_assert = tegra186_reset_assert,
49	.rst_deassert = tegra186_reset_deassert,
50};
51
52U_BOOT_DRIVER(tegra186_reset) = {
53	.name		= "tegra186_reset",
54	.id		= UCLASS_RESET,
55	.ops = &tegra186_reset_ops,
56};
57