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1/* SPDX-License-Identifier: GPL-2.0 */
2
3/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
4 * Copyright (C) 2018-2024 Linaro Ltd.
5 */
6#ifndef _IPA_POWER_H_
7#define _IPA_POWER_H_
8
9#include <linux/types.h>
10
11struct device;
12
13struct ipa;
14struct ipa_power_data;
15
16/* IPA device power management function block */
17extern const struct dev_pm_ops ipa_pm_ops;
18
19/**
20 * ipa_core_clock_rate() - Return the current IPA core clock rate
21 * @ipa: IPA structure
22 *
23 * Return: The current clock rate (in Hz), or 0.
24 */
25u32 ipa_core_clock_rate(struct ipa *ipa);
26
27/**
28 * ipa_power_retention() - Control register retention on power collapse
29 * @ipa: IPA pointer
30 * @enable: Whether retention should be enabled or disabled
31 */
32void ipa_power_retention(struct ipa *ipa, bool enable);
33
34/**
35 * ipa_power_init() - Initialize IPA power management
36 * @dev: IPA device
37 * @data: Clock configuration data
38 *
39 * Return: A pointer to an ipa_power structure, or a pointer-coded error
40 */
41struct ipa_power *ipa_power_init(struct device *dev,
42 const struct ipa_power_data *data);
43
44/**
45 * ipa_power_exit() - Inverse of ipa_power_init()
46 * @power: IPA power pointer
47 */
48void ipa_power_exit(struct ipa_power *power);
49
50#endif /* _IPA_POWER_H_ */