/* SPDX-License-Identifier: GPL-2.0-only */
|
/*
|
* Chained IRQ handlers support.
|
*
|
* Copyright (C) 2011 ARM Ltd.
|
*/
|
#ifndef __IRQCHIP_CHAINED_IRQ_H
|
#define __IRQCHIP_CHAINED_IRQ_H
|
|
#include <linux/irq.h>
|
|
/*
|
* Entry/exit functions for chained handlers where the primary IRQ chip
|
* may implement either fasteoi or level-trigger flow control.
|
*/
|
static inline void chained_irq_enter(struct irq_chip *chip,
|
struct irq_desc *desc)
|
{
|
/* FastEOI controllers require no action on entry. */
|
if (chip->irq_eoi)
|
return;
|
|
if (chip->irq_mask_ack) {
|
chip->irq_mask_ack(&desc->irq_data);
|
} else {
|
chip->irq_mask(&desc->irq_data);
|
if (chip->irq_ack)
|
chip->irq_ack(&desc->irq_data);
|
}
|
}
|
|
static inline void chained_irq_exit(struct irq_chip *chip,
|
struct irq_desc *desc)
|
{
|
if (chip->irq_eoi)
|
chip->irq_eoi(&desc->irq_data);
|
else
|
chip->irq_unmask(&desc->irq_data);
|
}
|
|
#endif /* __IRQCHIP_CHAINED_IRQ_H */
|
