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_ */