93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
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* Copyright (C) 2018-2022 Linaro Ltd.
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*/
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#ifndef _IPA_POWER_H_
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#define _IPA_POWER_H_
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struct device;
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struct ipa;
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struct ipa_power_data;
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enum ipa_irq_id;
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/* IPA device power management function block */
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extern const struct dev_pm_ops ipa_pm_ops;
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/**
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* ipa_core_clock_rate() - Return the current IPA core clock rate
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* @ipa: IPA structure
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*
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* Return: The current clock rate (in Hz), or 0.
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*/
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u32 ipa_core_clock_rate(struct ipa *ipa);
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/**
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* ipa_power_modem_queue_stop() - Possibly stop the modem netdev TX queue
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* @ipa: IPA pointer
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*/
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void ipa_power_modem_queue_stop(struct ipa *ipa);
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/**
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* ipa_power_modem_queue_wake() - Possibly wake the modem netdev TX queue
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* @ipa: IPA pointer
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*/
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void ipa_power_modem_queue_wake(struct ipa *ipa);
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/**
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* ipa_power_modem_queue_active() - Report modem netdev TX queue active
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* @ipa: IPA pointer
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*/
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void ipa_power_modem_queue_active(struct ipa *ipa);
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/**
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* ipa_power_retention() - Control register retention on power collapse
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* @ipa: IPA pointer
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* @enable: Whether retention should be enabled or disabled
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*/
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void ipa_power_retention(struct ipa *ipa, bool enable);
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/**
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* ipa_power_suspend_handler() - Handler for SUSPEND IPA interrupts
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* @ipa: IPA pointer
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* @irq_id: IPA interrupt ID (unused)
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*
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* If an RX endpoint is suspended, and the IPA has a packet destined for
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* that endpoint, the IPA generates a SUSPEND interrupt to inform the AP
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* that it should resume the endpoint.
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*/
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void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id);
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/**
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* ipa_power_setup() - Set up IPA power management
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* @ipa: IPA pointer
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*
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* Return: 0 if successful, or a negative error code
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*/
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int ipa_power_setup(struct ipa *ipa);
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/**
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* ipa_power_teardown() - Inverse of ipa_power_setup()
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* @ipa: IPA pointer
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*/
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void ipa_power_teardown(struct ipa *ipa);
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/**
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* ipa_power_init() - Initialize IPA power management
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* @dev: IPA device
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* @data: Clock configuration data
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*
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* Return: A pointer to an ipa_power structure, or a pointer-coded error
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*/
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struct ipa_power *ipa_power_init(struct device *dev,
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const struct ipa_power_data *data);
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/**
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* ipa_power_exit() - Inverse of ipa_power_init()
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* @power: IPA power pointer
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*/
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void ipa_power_exit(struct ipa_power *power);
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#endif /* _IPA_POWER_H_ */
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