2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 04:34:11 +08:00
linux-next/drivers/irqchip/irq-sirfsoc.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

131 lines
3.5 KiB
C

/*
* interrupt controller support for CSR SiRFprimaII
*
* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
*
* Licensed under GPLv2 or later.
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/irqchip.h>
#include <linux/irqdomain.h>
#include <linux/syscore_ops.h>
#include <asm/mach/irq.h>
#include <asm/exception.h>
#define SIRFSOC_INT_RISC_MASK0 0x0018
#define SIRFSOC_INT_RISC_MASK1 0x001C
#define SIRFSOC_INT_RISC_LEVEL0 0x0020
#define SIRFSOC_INT_RISC_LEVEL1 0x0024
#define SIRFSOC_INIT_IRQ_ID 0x0038
#define SIRFSOC_INT_BASE_OFFSET 0x0004
#define SIRFSOC_NUM_IRQS 64
#define SIRFSOC_NUM_BANKS (SIRFSOC_NUM_IRQS / 32)
static struct irq_domain *sirfsoc_irqdomain;
static __init void sirfsoc_alloc_gc(void __iomem *base)
{
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
unsigned int set = IRQ_LEVEL;
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
int i;
irq_alloc_domain_generic_chips(sirfsoc_irqdomain, 32, 1, "irq_sirfsoc",
handle_level_irq, clr, set,
IRQ_GC_INIT_MASK_CACHE);
for (i = 0; i < SIRFSOC_NUM_BANKS; i++) {
gc = irq_get_domain_generic_chip(sirfsoc_irqdomain, i * 32);
gc->reg_base = base + i * SIRFSOC_INT_BASE_OFFSET;
ct = gc->chip_types;
ct->chip.irq_mask = irq_gc_mask_clr_bit;
ct->chip.irq_unmask = irq_gc_mask_set_bit;
ct->regs.mask = SIRFSOC_INT_RISC_MASK0;
}
}
static void __exception_irq_entry sirfsoc_handle_irq(struct pt_regs *regs)
{
void __iomem *base = sirfsoc_irqdomain->host_data;
u32 irqstat;
irqstat = readl_relaxed(base + SIRFSOC_INIT_IRQ_ID);
handle_domain_irq(sirfsoc_irqdomain, irqstat & 0xff, regs);
}
static int __init sirfsoc_irq_init(struct device_node *np,
struct device_node *parent)
{
void __iomem *base = of_iomap(np, 0);
if (!base)
panic("unable to map intc cpu registers\n");
sirfsoc_irqdomain = irq_domain_add_linear(np, SIRFSOC_NUM_IRQS,
&irq_generic_chip_ops, base);
sirfsoc_alloc_gc(base);
writel_relaxed(0, base + SIRFSOC_INT_RISC_LEVEL0);
writel_relaxed(0, base + SIRFSOC_INT_RISC_LEVEL1);
writel_relaxed(0, base + SIRFSOC_INT_RISC_MASK0);
writel_relaxed(0, base + SIRFSOC_INT_RISC_MASK1);
set_handle_irq(sirfsoc_handle_irq);
return 0;
}
IRQCHIP_DECLARE(sirfsoc_intc, "sirf,prima2-intc", sirfsoc_irq_init);
struct sirfsoc_irq_status {
u32 mask0;
u32 mask1;
u32 level0;
u32 level1;
};
static struct sirfsoc_irq_status sirfsoc_irq_st;
static int sirfsoc_irq_suspend(void)
{
void __iomem *base = sirfsoc_irqdomain->host_data;
sirfsoc_irq_st.mask0 = readl_relaxed(base + SIRFSOC_INT_RISC_MASK0);
sirfsoc_irq_st.mask1 = readl_relaxed(base + SIRFSOC_INT_RISC_MASK1);
sirfsoc_irq_st.level0 = readl_relaxed(base + SIRFSOC_INT_RISC_LEVEL0);
sirfsoc_irq_st.level1 = readl_relaxed(base + SIRFSOC_INT_RISC_LEVEL1);
return 0;
}
static void sirfsoc_irq_resume(void)
{
void __iomem *base = sirfsoc_irqdomain->host_data;
writel_relaxed(sirfsoc_irq_st.mask0, base + SIRFSOC_INT_RISC_MASK0);
writel_relaxed(sirfsoc_irq_st.mask1, base + SIRFSOC_INT_RISC_MASK1);
writel_relaxed(sirfsoc_irq_st.level0, base + SIRFSOC_INT_RISC_LEVEL0);
writel_relaxed(sirfsoc_irq_st.level1, base + SIRFSOC_INT_RISC_LEVEL1);
}
static struct syscore_ops sirfsoc_irq_syscore_ops = {
.suspend = sirfsoc_irq_suspend,
.resume = sirfsoc_irq_resume,
};
static int __init sirfsoc_irq_pm_init(void)
{
if (!sirfsoc_irqdomain)
return 0;
register_syscore_ops(&sirfsoc_irq_syscore_ops);
return 0;
}
device_initcall(sirfsoc_irq_pm_init);