/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. * Copyright (C) 2018-2022 Linaro Ltd. */ #ifndef _IPA_POWER_H_ #define _IPA_POWER_H_ struct device; struct ipa; struct ipa_power_data; enum ipa_irq_id; /* IPA device power management function block */ extern const struct dev_pm_ops ipa_pm_ops; /** * ipa_core_clock_rate() - Return the current IPA core clock rate * @ipa: IPA structure * * Return: The current clock rate (in Hz), or 0. */ u32 ipa_core_clock_rate(struct ipa *ipa); /** * ipa_power_retention() - Control register retention on power collapse * @ipa: IPA pointer * @enable: Whether retention should be enabled or disabled */ void ipa_power_retention(struct ipa *ipa, bool enable); /** * ipa_power_setup() - Set up IPA power management * @ipa: IPA pointer * * Return: 0 if successful, or a negative error code */ int ipa_power_setup(struct ipa *ipa); /** * ipa_power_teardown() - Inverse of ipa_power_setup() * @ipa: IPA pointer */ void ipa_power_teardown(struct ipa *ipa); /** * ipa_power_init() - Initialize IPA power management * @dev: IPA device * @data: Clock configuration data * * Return: A pointer to an ipa_power structure, or a pointer-coded error */ struct ipa_power *ipa_power_init(struct device *dev, const struct ipa_power_data *data); /** * ipa_power_exit() - Inverse of ipa_power_init() * @power: IPA power pointer */ void ipa_power_exit(struct ipa_power *power); #endif /* _IPA_POWER_H_ */