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arm: Move chained_irq_(enter|exit) to a generic file
These functions have been introduced by commit 10a8c38 (irq: introduce entry and exit functions for chained handlers) in asm/mach/irq.h. This patch moves them to linux/irqchip/chained_irq.h so that generic irqchip drivers do not rely on architecture specific header files. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Herring <rob.herring@calxeda.com>
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Catalin Marinas
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Original file line number | Diff line number | Diff line change |
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/* | ||
* Chained IRQ handlers support. | ||
* | ||
* Copyright (C) 2011 ARM Ltd. | ||
* | ||
* This program is free software: you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
* | ||
* This program is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
* GNU General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
*/ | ||
#ifndef __IRQCHIP_CHAINED_IRQ_H | ||
#define __IRQCHIP_CHAINED_IRQ_H | ||
|
||
#include <linux/irq.h> | ||
|
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/* | ||
* 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); | ||
} | ||
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||
#endif /* __IRQCHIP_CHAINED_IRQ_H */ |