/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. * Copyright (C) 2018-2024 Linaro Ltd. */#ifndef _IPA_INTERRUPT_H_#define _IPA_INTERRUPT_H_ #include <linux/types.h> struct platform_device; struct ipa;struct ipa_interrupt; enum ipa_irq_id; /** * ipa_interrupt_suspend_enable - Enable TX_SUSPEND for an endpoint * @interrupt:		IPA interrupt structure * @endpoint_id:	Endpoint whose interrupt should be enabled * * Note:  The "TX" in the name is from the perspective of the IPA hardware. * A TX_SUSPEND interrupt arrives on an AP RX enpoint when packet data can't * be delivered to the endpoint because it is suspended (or its underlying * channel is stopped). */void ipa_interrupt_suspend_enable(struct ipa_interrupt *interrupt,				  u32 endpoint_id); /** * ipa_interrupt_suspend_disable - Disable TX_SUSPEND for an endpoint * @interrupt:		IPA interrupt structure * @endpoint_id:	Endpoint whose interrupt should be disabled */void ipa_interrupt_suspend_disable(struct ipa_interrupt *interrupt,				   u32 endpoint_id); /** * ipa_interrupt_simulate_suspend() - Simulate TX_SUSPEND IPA interrupt * @interrupt:	IPA interrupt structure * * This calls the TX_SUSPEND interrupt handler, as if such an interrupt * had been signaled.  This is needed to work around a hardware quirk * that occurs if aggregation is active on an endpoint when its underlying * channel is suspended. */void ipa_interrupt_simulate_suspend(struct ipa_interrupt *interrupt); /** * ipa_interrupt_enable() - Enable an IPA interrupt type * @ipa:	IPA pointer * @ipa_irq:	IPA interrupt ID */void ipa_interrupt_enable(struct ipa *ipa, enum ipa_irq_id ipa_irq); /** * ipa_interrupt_disable() - Disable an IPA interrupt type * @ipa:	IPA pointer * @ipa_irq:	IPA interrupt ID */void ipa_interrupt_disable(struct ipa *ipa, enum ipa_irq_id ipa_irq); /** * ipa_interrupt_irq_enable() - Enable IPA interrupts * @ipa:	IPA pointer * * This enables the IPA interrupt line */void ipa_interrupt_irq_enable(struct ipa *ipa); /** * ipa_interrupt_irq_disable() - Disable IPA interrupts * @ipa:	IPA pointer * * This disables the IPA interrupt line */void ipa_interrupt_irq_disable(struct ipa *ipa); /** * ipa_interrupt_config() - Configure IPA interrupts * @ipa:	IPA pointer * * Return:	0 if successful, or a negative error code */int ipa_interrupt_config(struct ipa *ipa); /** * ipa_interrupt_deconfig() - Inverse of ipa_interrupt_config() * @ipa:	IPA pointer */void ipa_interrupt_deconfig(struct ipa *ipa); /** * ipa_interrupt_init() - Initialize the IPA interrupt structure * @pdev:	IPA platform device pointer * * Return:	Pointer to an IPA interrupt structure, or a pointer-coded error */struct ipa_interrupt *ipa_interrupt_init(struct platform_device *pdev); /** * ipa_interrupt_exit() - Inverse of ipa_interrupt_init() * @interrupt:	IPA interrupt structure */void ipa_interrupt_exit(struct ipa_interrupt *interrupt); #endif /* _IPA_INTERRUPT_H_ */