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Linux kernel mirror (for testing)
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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) 2018-2020 Linaro Ltd.
5 */
6#ifndef _IPA_POWER_H_
7#define _IPA_POWER_H_
8
9struct device;
10
11struct ipa;
12struct ipa_power_data;
13
14/* IPA device power management function block */
15extern const struct dev_pm_ops ipa_pm_ops;
16
17/**
18 * ipa_core_clock_rate() - Return the current IPA core clock rate
19 * @ipa: IPA structure
20 *
21 * Return: The current clock rate (in Hz), or 0.
22 */
23u32 ipa_core_clock_rate(struct ipa *ipa);
24
25/**
26 * ipa_power_modem_queue_stop() - Possibly stop the modem netdev TX queue
27 * @ipa: IPA pointer
28 */
29void ipa_power_modem_queue_stop(struct ipa *ipa);
30
31/**
32 * ipa_power_modem_queue_wake() - Possibly wake the modem netdev TX queue
33 * @ipa: IPA pointer
34 */
35void ipa_power_modem_queue_wake(struct ipa *ipa);
36
37/**
38 * ipa_power_modem_queue_active() - Report modem netdev TX queue active
39 * @ipa: IPA pointer
40 */
41void ipa_power_modem_queue_active(struct ipa *ipa);
42
43/**
44 * ipa_power_setup() - Set up IPA power management
45 * @ipa: IPA pointer
46 *
47 * Return: 0 if successful, or a negative error code
48 */
49int ipa_power_setup(struct ipa *ipa);
50
51/**
52 * ipa_power_teardown() - Inverse of ipa_power_setup()
53 * @ipa: IPA pointer
54 */
55void ipa_power_teardown(struct ipa *ipa);
56
57/**
58 * ipa_power_init() - Initialize IPA power management
59 * @dev: IPA device
60 * @data: Clock configuration data
61 *
62 * Return: A pointer to an ipa_power structure, or a pointer-coded error
63 */
64struct ipa_power *ipa_power_init(struct device *dev,
65 const struct ipa_power_data *data);
66
67/**
68 * ipa_power_exit() - Inverse of ipa_power_init()
69 * @power: IPA power pointer
70 */
71void ipa_power_exit(struct ipa_power *power);
72
73#endif /* _IPA_POWER_H_ */