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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) 2018-2024 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 rate21 * @ipa: IPA structure22 *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 collapse29 * @ipa: IPA pointer30 * @enable: Whether retention should be enabled or disabled31 */32void ipa_power_retention(struct ipa *ipa, bool enable);33 34/**35 * ipa_power_init() - Initialize IPA power management36 * @dev: IPA device37 * @data: Clock configuration data38 *39 * Return: A pointer to an ipa_power structure, or a pointer-coded error40 */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 pointer47 */48void ipa_power_exit(struct ipa_power *power);49 50#endif /* _IPA_POWER_H_ */51