[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / irq / dummychip.c

/*
 * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
 * Copyright (C) 2005-2006, Thomas Gleixner, Russell King
 *
 * This file contains the dummy interrupt chip implementation
 */
#include <linux/interrupt.h>
#include <linux/irq.h>

#include "internals.h"

/*
 * What should we do if we get a hw irq event on an illegal vector?
 * Each architecture has to answer this themself.
 */
static void ack_bad(struct irq_data *data)
{
	struct irq_desc *desc = irq_data_to_desc(data);

	print_irq_desc(data->irq, desc);
	ack_bad_irq(data->irq);
}

/*
 * NOP functions
 */
static void noop(struct irq_data *data) { }

static unsigned int noop_ret(struct irq_data *data)
{
	return 0;
}

/*
 * Generic no controller implementation
 */
struct irq_chip no_irq_chip = {
	.name		= "none",
	.irq_startup	= noop_ret,
	.irq_shutdown	= noop,
	.irq_enable	= noop,
	.irq_disable	= noop,
	.irq_ack	= ack_bad,
};

/*
 * Generic dummy implementation which can be used for
 * real dumb interrupt sources
 */
struct irq_chip dummy_irq_chip = {
	.name		= "dummy",
	.irq_startup	= noop_ret,
	.irq_shutdown	= noop,
	.irq_enable	= noop,
	.irq_disable	= noop,
	.irq_ack	= noop,
	.irq_mask	= noop,
	.irq_unmask	= noop,
};
Commit	Line	Data
3795de23 TG	1	/*
	2	* Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
	3	* Copyright (C) 2005-2006, Thomas Gleixner, Russell King
	4	*
	5	* This file contains the dummy interrupt chip implementation
	6	*/
	7	#include <linux/interrupt.h>
	8	#include <linux/irq.h>
	9
	10	#include "internals.h"
	11
	12	/*
	13	* What should we do if we get a hw irq event on an illegal vector?
	14	* Each architecture has to answer this themself.
	15	*/
	16	static void ack_bad(struct irq_data *data)
	17	{
	18	struct irq_desc *desc = irq_data_to_desc(data);
	19
	20	print_irq_desc(data->irq, desc);
	21	ack_bad_irq(data->irq);
	22	}
	23
	24	/*
	25	* NOP functions
	26	*/
	27	static void noop(struct irq_data *data) { }
	28
	29	static unsigned int noop_ret(struct irq_data *data)
	30	{
	31	return 0;
	32	}
	33
3795de23 TG	34	/*
	35	* Generic no controller implementation
	36	*/
	37	struct irq_chip no_irq_chip = {
	38	.name = "none",
	39	.irq_startup = noop_ret,
	40	.irq_shutdown = noop,
	41	.irq_enable = noop,
	42	.irq_disable = noop,
	43	.irq_ack = ack_bad,
3795de23 TG	44	};
	45
	46	/*
	47	* Generic dummy implementation which can be used for
	48	* real dumb interrupt sources
	49	*/
	50	struct irq_chip dummy_irq_chip = {
	51	.name = "dummy",
	52	.irq_startup = noop_ret,
	53	.irq_shutdown = noop,
	54	.irq_enable = noop,
	55	.irq_disable = noop,
	56	.irq_ack = noop,
	57	.irq_mask = noop,
	58	.irq_unmask = noop,
3795de23	59	};