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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 */
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