linux-stable/drivers/irqchip/irq-xtensa-pic.c
Joel Porquet 41a83e06e2 irqchip: Prepare for local stub header removal
The IRQCHIP_DECLARE macro moved to to 'include/linux/irqchip.h', so
the local irqchip.h became an empty shell, which solely includes
include/linux/irqchip.h

Include the global header in all irqchip drivers instead of the local
header, so we can remove it.

Signed-off-by: Joel Porquet <joel@porquet.org>
Cc: vgupta@synopsys.com
Cc: monstr@monstr.eu
Cc: ralf@linux-mips.org
Cc: jason@lakedaemon.net
Link: http://lkml.kernel.org/r/1882096.X39jVG8e0D@joel-zenbook
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-07-11 23:14:23 +02:00

107 lines
2.7 KiB
C

/*
* Xtensa built-in interrupt controller
*
* Copyright (C) 2002 - 2013 Tensilica, Inc.
* Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Chris Zankel <chris@zankel.net>
* Kevin Chea
*/
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/of.h>
unsigned int cached_irq_mask;
/*
* Device Tree IRQ specifier translation function which works with one or
* two cell bindings. First cell value maps directly to the hwirq number.
* Second cell if present specifies whether hwirq number is external (1) or
* internal (0).
*/
static int xtensa_pic_irq_domain_xlate(struct irq_domain *d,
struct device_node *ctrlr,
const u32 *intspec, unsigned int intsize,
unsigned long *out_hwirq, unsigned int *out_type)
{
return xtensa_irq_domain_xlate(intspec, intsize,
intspec[0], intspec[0],
out_hwirq, out_type);
}
static const struct irq_domain_ops xtensa_irq_domain_ops = {
.xlate = xtensa_pic_irq_domain_xlate,
.map = xtensa_irq_map,
};
static void xtensa_irq_mask(struct irq_data *d)
{
cached_irq_mask &= ~(1 << d->hwirq);
set_sr(cached_irq_mask, intenable);
}
static void xtensa_irq_unmask(struct irq_data *d)
{
cached_irq_mask |= 1 << d->hwirq;
set_sr(cached_irq_mask, intenable);
}
static void xtensa_irq_enable(struct irq_data *d)
{
variant_irq_enable(d->hwirq);
xtensa_irq_unmask(d);
}
static void xtensa_irq_disable(struct irq_data *d)
{
xtensa_irq_mask(d);
variant_irq_disable(d->hwirq);
}
static void xtensa_irq_ack(struct irq_data *d)
{
set_sr(1 << d->hwirq, intclear);
}
static int xtensa_irq_retrigger(struct irq_data *d)
{
set_sr(1 << d->hwirq, intset);
return 1;
}
static struct irq_chip xtensa_irq_chip = {
.name = "xtensa",
.irq_enable = xtensa_irq_enable,
.irq_disable = xtensa_irq_disable,
.irq_mask = xtensa_irq_mask,
.irq_unmask = xtensa_irq_unmask,
.irq_ack = xtensa_irq_ack,
.irq_retrigger = xtensa_irq_retrigger,
};
int __init xtensa_pic_init_legacy(struct device_node *interrupt_parent)
{
struct irq_domain *root_domain =
irq_domain_add_legacy(NULL, NR_IRQS, 0, 0,
&xtensa_irq_domain_ops, &xtensa_irq_chip);
irq_set_default_host(root_domain);
return 0;
}
static int __init xtensa_pic_init(struct device_node *np,
struct device_node *interrupt_parent)
{
struct irq_domain *root_domain =
irq_domain_add_linear(np, NR_IRQS, &xtensa_irq_domain_ops,
&xtensa_irq_chip);
irq_set_default_host(root_domain);
return 0;
}
IRQCHIP_DECLARE(xtensa_irq_chip, "cdns,xtensa-pic", xtensa_pic_init);