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/* 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 */