1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
 4 */
 5
 6#include <linux/bitops.h>
 7#include <linux/export.h>
 8#include <linux/regmap.h>
 9#include <linux/reset-controller.h>
10#include <linux/delay.h>
11
12#include "reset.h"
13
14static int qcom_reset(struct reset_controller_dev *rcdev, unsigned long id)
15{
16	rcdev->ops->assert(rcdev, id);
17	udelay(1);
18	rcdev->ops->deassert(rcdev, id);
19	return 0;
20}
21
22static int
23qcom_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
24{
25	struct qcom_reset_controller *rst;
26	const struct qcom_reset_map *map;
27	u32 mask;
28
29	rst = to_qcom_reset_controller(rcdev);
30	map = &rst->reset_map[id];
31	mask = BIT(map->bit);
32
33	return regmap_update_bits(rst->regmap, map->reg, mask, mask);
34}
35
36static int
37qcom_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
38{
39	struct qcom_reset_controller *rst;
40	const struct qcom_reset_map *map;
41	u32 mask;
42
43	rst = to_qcom_reset_controller(rcdev);
44	map = &rst->reset_map[id];
45	mask = BIT(map->bit);
46
47	return regmap_update_bits(rst->regmap, map->reg, mask, 0);
48}
49
50const struct reset_control_ops qcom_reset_ops = {
51	.reset = qcom_reset,
52	.assert = qcom_reset_assert,
53	.deassert = qcom_reset_deassert,
54};
55EXPORT_SYMBOL_GPL(qcom_reset_ops);