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/* 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_modem_queue_stop() - Possibly stop the modem netdev TX queue
* @ipa: IPA pointer
*/
void ipa_power_modem_queue_stop(struct ipa *ipa);
/**
* ipa_power_modem_queue_wake() - Possibly wake the modem netdev TX queue
* @ipa: IPA pointer
*/
void ipa_power_modem_queue_wake(struct ipa *ipa);
/**
* ipa_power_modem_queue_active() - Report modem netdev TX queue active
* @ipa: IPA pointer
*/
void ipa_power_modem_queue_active(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_suspend_handler() - Handler for SUSPEND IPA interrupts
* @ipa: IPA pointer
* @irq_id: IPA interrupt ID (unused)
*
* If an RX endpoint is suspended, and the IPA has a packet destined for
* that endpoint, the IPA generates a SUSPEND interrupt to inform the AP
* that it should resume the endpoint.
*/
void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id);
/**
* 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_ */
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