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