diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2013-01-18 15:31:37 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-03-26 16:11:43 +0000 |
| commit | de88cbb7b244f3bcd61d49fd6dec35c19192545a (patch) | |
| tree | 790dff780e6bcdf2c9e71baa7beb92102ec99526 /include/linux/irqchip | |
| parent | f36a3bb1a1b73a60f4df1d4c38c686cc173f50b3 (diff) | |
arm: Move chained_irq_(enter|exit) to a generic file
These functions have been introduced by commit 10a8c383 (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>
Diffstat (limited to 'include/linux/irqchip')
| -rw-r--r-- | include/linux/irqchip/chained_irq.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/irqchip/chained_irq.h b/include/linux/irqchip/chained_irq.h new file mode 100644 index 000000000000..adf4c30f3af6 --- /dev/null +++ b/include/linux/irqchip/chained_irq.h @@ -0,0 +1,52 @@ +/* + * 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> + +/* + * 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 */ |