| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | |
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| 3 | /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
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| 4 | * Copyright (C) 2018-2024 Linaro Ltd. |
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| 5 | */ |
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| 6 | #ifndef _IPA_POWER_H_ |
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| 7 | #define _IPA_POWER_H_ |
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| 8 | |
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| 9 | #include <linux/types.h> |
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| 10 | |
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| 11 | struct device; |
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| 12 | |
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| 13 | struct ipa; |
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| 14 | struct ipa_power_data; |
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| 15 | |
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| 16 | /* IPA device power management function block */ |
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| 17 | extern const struct dev_pm_ops ipa_pm_ops; |
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| 18 | |
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| 19 | /** |
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| 20 | * ipa_core_clock_rate() - Return the current IPA core clock rate |
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| 21 | * @ipa: IPA structure |
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| 22 | * |
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| 23 | * Return: The current clock rate (in Hz), or 0. |
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| 24 | */ |
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| 25 | u32 ipa_core_clock_rate(struct ipa *ipa); |
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| 26 | |
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| 27 | /** |
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| 28 | * ipa_power_retention() - Control register retention on power collapse |
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| 29 | * @ipa: IPA pointer |
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| 30 | * @enable: Whether retention should be enabled or disabled |
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| 31 | */ |
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| 32 | void ipa_power_retention(struct ipa *ipa, bool enable); |
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| 33 | |
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| 34 | /** |
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| 35 | * ipa_power_init() - Initialize IPA power management |
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| 36 | * @dev: IPA device |
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| 37 | * @data: Clock configuration data |
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| 38 | * |
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| 39 | * Return: A pointer to an ipa_power structure, or a pointer-coded error |
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| 40 | */ |
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| 41 | struct ipa_power *ipa_power_init(struct device *dev, |
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| 42 | const struct ipa_power_data *data); |
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| 43 | |
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| 44 | /** |
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| 45 | * ipa_power_exit() - Inverse of ipa_power_init() |
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| 46 | * @power: IPA power pointer |
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| 47 | */ |
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| 48 | void ipa_power_exit(struct ipa_power *power); |
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| 49 | |
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| 50 | #endif /* _IPA_POWER_H_ */ |
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| 51 | |
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