linux-stable/include/linux/irq_sim.h
Bartosz Golaszewski 44e72c7ebf genirq/irq_sim: Add a devres variant of irq_sim_init()
Add a resource managed version of irq_sim_init(). This can be
conveniently used in device drivers.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Link: http://lkml.kernel.org/r/20170814145318.6495-3-brgl@bgdev.pl
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-08-16 16:40:02 +02:00

44 lines
1.2 KiB
C

#ifndef _LINUX_IRQ_SIM_H
#define _LINUX_IRQ_SIM_H
/*
* Copyright (C) 2017 Bartosz Golaszewski <brgl@bgdev.pl>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/irq_work.h>
#include <linux/device.h>
/*
* Provides a framework for allocating simulated interrupts which can be
* requested like normal irqs and enqueued from process context.
*/
struct irq_sim_work_ctx {
struct irq_work work;
int irq;
};
struct irq_sim_irq_ctx {
int irqnum;
bool enabled;
};
struct irq_sim {
struct irq_sim_work_ctx work_ctx;
int irq_base;
unsigned int irq_count;
struct irq_sim_irq_ctx *irqs;
};
int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs);
int devm_irq_sim_init(struct device *dev, struct irq_sim *sim,
unsigned int num_irqs);
void irq_sim_fini(struct irq_sim *sim);
void irq_sim_fire(struct irq_sim *sim, unsigned int offset);
int irq_sim_irqnum(struct irq_sim *sim, unsigned int offset);
#endif /* _LINUX_IRQ_SIM_H */