1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
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>
14 static int qcom_reset(struct reset_controller_dev *rcdev, unsigned long id)
16 struct qcom_reset_controller *rst = to_qcom_reset_controller(rcdev);
18 rcdev->ops->assert(rcdev, id);
19 udelay(rst->reset_map[id].udelay ?: 1); /* use 1 us as default */
20 rcdev->ops->deassert(rcdev, id);
25 qcom_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
27 struct qcom_reset_controller *rst;
28 const struct qcom_reset_map *map;
31 rst = to_qcom_reset_controller(rcdev);
32 map = &rst->reset_map[id];
35 return regmap_update_bits(rst->regmap, map->reg, mask, mask);
39 qcom_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
41 struct qcom_reset_controller *rst;
42 const struct qcom_reset_map *map;
45 rst = to_qcom_reset_controller(rcdev);
46 map = &rst->reset_map[id];
49 return regmap_update_bits(rst->regmap, map->reg, mask, 0);
52 const struct reset_control_ops qcom_reset_ops = {
54 .assert = qcom_reset_assert,
55 .deassert = qcom_reset_deassert,
57 EXPORT_SYMBOL_GPL(qcom_reset_ops);