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41 lines
931 B
41 lines
931 B
/* 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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