/* 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_ */
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