/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. * Copyright (C) 2018-2020 Linaro Ltd. */#ifndef _IPA_CLOCK_H_#define _IPA_CLOCK_H_ struct device; struct ipa;struct ipa_clock_data; /** * ipa_clock_rate() - Return the current IPA core clock rate * @ipa:	IPA structure * * Return: The current clock rate (in Hz), or 0. */u32 ipa_clock_rate(struct ipa *ipa); /** * ipa_clock_init() - Initialize IPA clocking * @dev:	IPA device * @data:	Clock configuration data * * Return:	A pointer to an ipa_clock structure, or a pointer-coded error */struct ipa_clock *ipa_clock_init(struct device *dev,				 const struct ipa_clock_data *data); /** * ipa_clock_exit() - Inverse of ipa_clock_init() * @clock:	IPA clock pointer */void ipa_clock_exit(struct ipa_clock *clock); /** * ipa_clock_get() - Get an IPA clock reference * @ipa:	IPA pointer * * This call blocks if this is the first reference. */void ipa_clock_get(struct ipa *ipa); /** * ipa_clock_get_additional() - Get an IPA clock reference if not first * @ipa:	IPA pointer * * This returns immediately, and only takes a reference if not the first */bool ipa_clock_get_additional(struct ipa *ipa); /** * ipa_clock_put() - Drop an IPA clock reference * @ipa:	IPA pointer * * This drops a clock reference.  If the last reference is being dropped, * the clock is stopped and RX endpoints are suspended.  This call will * not block unless the last reference is dropped. */void ipa_clock_put(struct ipa *ipa); #endif /* _IPA_CLOCK_H_ */