1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | |
3 | /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
4 | * Copyright (C) 2018-2022 Linaro Ltd. |
5 | */ |
6 | #ifndef _IPA_POWER_H_ |
7 | #define _IPA_POWER_H_ |
8 | |
9 | struct device; |
10 | |
11 | struct ipa; |
12 | struct ipa_power_data; |
13 | enum ipa_irq_id; |
14 | |
15 | /* IPA device power management function block */ |
16 | extern const struct dev_pm_ops ipa_pm_ops; |
17 | |
18 | /** |
19 | * ipa_core_clock_rate() - Return the current IPA core clock rate |
20 | * @ipa: IPA structure |
21 | * |
22 | * Return: The current clock rate (in Hz), or 0. |
23 | */ |
24 | u32 ipa_core_clock_rate(struct ipa *ipa); |
25 | |
26 | /** |
27 | * ipa_power_retention() - Control register retention on power collapse |
28 | * @ipa: IPA pointer |
29 | * @enable: Whether retention should be enabled or disabled |
30 | */ |
31 | void ipa_power_retention(struct ipa *ipa, bool enable); |
32 | |
33 | /** |
34 | * ipa_power_setup() - Set up IPA power management |
35 | * @ipa: IPA pointer |
36 | * |
37 | * Return: 0 if successful, or a negative error code |
38 | */ |
39 | int ipa_power_setup(struct ipa *ipa); |
40 | |
41 | /** |
42 | * ipa_power_teardown() - Inverse of ipa_power_setup() |
43 | * @ipa: IPA pointer |
44 | */ |
45 | void ipa_power_teardown(struct ipa *ipa); |
46 | |
47 | /** |
48 | * ipa_power_init() - Initialize IPA power management |
49 | * @dev: IPA device |
50 | * @data: Clock configuration data |
51 | * |
52 | * Return: A pointer to an ipa_power structure, or a pointer-coded error |
53 | */ |
54 | struct ipa_power *ipa_power_init(struct device *dev, |
55 | const struct ipa_power_data *data); |
56 | |
57 | /** |
58 | * ipa_power_exit() - Inverse of ipa_power_init() |
59 | * @power: IPA power pointer |
60 | */ |
61 | void ipa_power_exit(struct ipa_power *power); |
62 | |
63 | #endif /* _IPA_POWER_H_ */ |
64 | |