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move irq driver out of mach-mmp to support multiplatform

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Merge tag 'mmp-irq' of git://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux into late/all

From Haojian Zhuang:
Move irq driver out of mach-mmp to support multiplatform

* tag 'mmp-irq' of git://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux:
  irqchip: mmp: avoid to include irqs head file
  ARM: mmp: avoid to include head file in mach-mmp
  irqchip: mmp: support irqchip
  irqchip: move mmp irq driver
This commit is contained in:
Olof Johansson 2013-08-29 13:21:24 -07:00
commit 66fafb6fbf
13 changed files with 213 additions and 197 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/Kconfig
View File

@ -557,6 +557,7 @@ config ARCH_MMP
select GENERIC_CLOCKEVENTS
select GPIO_PXA
select IRQ_DOMAIN
select MULTI_IRQ_HANDLER
select NEED_MACH_GPIO_H
select PINCTRL
select PLAT_PXA

2
arch/arm/mach-mmp/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for Marvell's PXA168 processors line
#
obj-y += common.o devices.o time.o irq.o
obj-y += common.o devices.o time.o
# SoC support
obj-$(CONFIG_CPU_PXA168) += pxa168.o

1
arch/arm/mach-mmp/common.h
View File

@ -3,7 +3,6 @@
extern void timer_init(int irq);
extern void __init icu_init_irq(void);
extern void __init mmp_map_io(void);
extern void mmp_restart(enum reboot_mode, const char *);
extern void __init pxa168_clk_init(void);

26
arch/arm/mach-mmp/include/mach/entry-macro.S
View File

@ -1,26 +0,0 @@
/*
* linux/arch/arm/mach-mmp/include/mach/entry-macro.S
*
* 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.
*/
#include <asm/irq.h>
#include <mach/regs-icu.h>
.macro get_irqnr_preamble, base, tmp
mrc p15, 0, \tmp, c0, c0, 0 @ CPUID
and \tmp, \tmp, #0xff00
cmp \tmp, #0x5800
ldr \base, =mmp_icu_base
ldr \base, [\base, #0]
addne \base, \base, #0x10c @ PJ1 AP INT SEL register
addeq \base, \base, #0x104 @ PJ4 IRQ SEL register
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \tmp, [\base, #0]
and \irqnr, \tmp, #0x3f
tst \tmp, #(1 << 6)
.endm

1
arch/arm/mach-mmp/include/mach/pxa168.h
View File

@ -4,6 +4,7 @@
#include <linux/reboot.h>
extern void pxa168_timer_init(void);
extern void __init icu_init_irq(void);
extern void __init pxa168_init_irq(void);
extern void pxa168_restart(enum reboot_mode, const char *);
extern void pxa168_clear_keypad_wakeup(void);

1
arch/arm/mach-mmp/include/mach/pxa910.h
View File

@ -2,6 +2,7 @@
#define __ASM_MACH_PXA910_H
extern void pxa910_timer_init(void);
extern void __init icu_init_irq(void);
extern void __init pxa910_init_irq(void);
#include <linux/i2c.h>

8
arch/arm/mach-mmp/mmp-dt.c
View File

@ -9,17 +9,13 @@
* publishhed by the Free Software Foundation.
*/
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/of_irq.h>
#include <linux/irqchip.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/irqs.h>
#include "common.h"
extern void __init mmp_dt_irq_init(void);
extern void __init mmp_dt_init_timer(void);
static const struct of_dev_auxdata pxa168_auxdata_lookup[] __initconst = {
@ -64,7 +60,6 @@ static const char *mmp_dt_board_compat[] __initdata = {
DT_MACHINE_START(PXA168_DT, "Marvell PXA168 (Device Tree Support)")
.map_io = mmp_map_io,
.init_irq = mmp_dt_irq_init,
.init_time = mmp_dt_init_timer,
.init_machine = pxa168_dt_init,
.dt_compat = mmp_dt_board_compat,
@ -72,7 +67,6 @@ MACHINE_END
DT_MACHINE_START(PXA910_DT, "Marvell PXA910 (Device Tree Support)")
.map_io = mmp_map_io,
.init_irq = mmp_dt_irq_init,
.init_time = mmp_dt_init_timer,
.init_machine = pxa910_dt_init,
.dt_compat = mmp_dt_board_compat,

8
arch/arm/mach-mmp/mmp2-dt.c
View File

@ -10,18 +10,13 @@
*/
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/of_irq.h>
#include <linux/irqchip.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/irqs.h>
#include <mach/regs-apbc.h>
#include "common.h"
extern void __init mmp_dt_irq_init(void);
extern void __init mmp_dt_init_timer(void);
static const struct of_dev_auxdata mmp2_auxdata_lookup[] __initconst = {
@ -49,7 +44,6 @@ static const char *mmp2_dt_board_compat[] __initdata = {
DT_MACHINE_START(MMP2_DT, "Marvell MMP2 (Device Tree Support)")
.map_io = mmp_map_io,
.init_irq = mmp_dt_irq_init,
.init_time = mmp_dt_init_timer,
.init_machine = mmp2_dt_init,
.dt_compat = mmp2_dt_board_compat,

6
arch/arm/mach-mmp/mmp2.c
View File

@ -13,6 +13,8 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqchip/mmp.h>
#include <linux/platform_device.h>
#include <asm/hardware/cache-tauros2.h>
@ -26,6 +28,7 @@
#include <mach/mfp.h>
#include <mach/devices.h>
#include <mach/mmp2.h>
#include <mach/pm-mmp2.h>
#include "common.h"
@ -94,6 +97,9 @@ void mmp2_clear_pmic_int(void)
void __init mmp2_init_irq(void)
{
mmp2_init_icu();
#ifdef CONFIG_PM
icu_irq_chip.irq_set_wake = mmp2_set_wake;
#endif
}
static int __init mmp2_init(void)

7
arch/arm/mach-mmp/pxa910.c
View File

@ -12,6 +12,8 @@
#include <linux/init.h>
#include <linux/list.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqchip/mmp.h>
#include <linux/platform_device.h>
#include <asm/hardware/cache-tauros2.h>
@ -23,6 +25,8 @@
#include <mach/dma.h>
#include <mach/mfp.h>
#include <mach/devices.h>
#include <mach/pm-pxa910.h>
#include <mach/pxa910.h>
#include "common.h"
@ -79,6 +83,9 @@ static struct mfp_addr_map pxa910_mfp_addr_map[] __initdata =
void __init pxa910_init_irq(void)
{
icu_init_irq();
#ifdef CONFIG_PM
icu_irq_chip.irq_set_wake = pxa910_set_wake;
#endif
}
static int __init pxa910_init(void)

1
drivers/irqchip/Makefile
View File

@ -2,6 +2,7 @@ obj-$(CONFIG_IRQCHIP) += irqchip.o
obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o
obj-$(CONFIG_ARCH_EXYNOS) += exynos-combiner.o
obj-$(CONFIG_ARCH_MMP) += irq-mmp.o
obj-$(CONFIG_ARCH_MVEBU) += irq-armada-370-xp.o
obj-$(CONFIG_ARCH_MXS) += irq-mxs.o
obj-$(CONFIG_ARCH_S3C24XX) += irq-s3c24xx.o

342
arch/arm/mach-mmp/irq.c → drivers/irqchip/irq-mmp.c
View File

@ -21,19 +21,20 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <mach/irqs.h>
#include <asm/exception.h>
#include <asm/mach/irq.h>
#ifdef CONFIG_CPU_MMP2
#include <mach/pm-mmp2.h>
#endif
#ifdef CONFIG_CPU_PXA910
#include <mach/pm-pxa910.h>
#endif
#include "common.h"
#include "irqchip.h"
#define MAX_ICU_NR 16
#define PJ1_INT_SEL 0x10c
#define PJ4_INT_SEL 0x104
/* bit fields in PJ1_INT_SEL and PJ4_INT_SEL */
#define SEL_INT_PENDING (1 << 6)
#define SEL_INT_NUM_MASK 0x3f
struct icu_chip_data {
int nr_irqs;
unsigned int virq_base;
@ -54,7 +55,7 @@ struct mmp_intc_conf {
unsigned int conf_mask;
};
void __iomem *mmp_icu_base;
static void __iomem *mmp_icu_base;
static struct icu_chip_data icu_data[MAX_ICU_NR];
static int max_icu_nr;
@ -122,7 +123,7 @@ static void icu_unmask_irq(struct irq_data *d)
}
}
static struct irq_chip icu_irq_chip = {
struct irq_chip icu_irq_chip = {
.name = "icu_irq",
.irq_mask = icu_mask_irq,
.irq_mask_ack = icu_mask_ack_irq,
@ -193,6 +194,32 @@ static struct mmp_intc_conf mmp2_conf = {
.conf_mask = 0x7f,
};
static asmlinkage void __exception_irq_entry
mmp_handle_irq(struct pt_regs *regs)
{
int irq, hwirq;
hwirq = readl_relaxed(mmp_icu_base + PJ1_INT_SEL);
if (!(hwirq & SEL_INT_PENDING))
return;
hwirq &= SEL_INT_NUM_MASK;
irq = irq_find_mapping(icu_data[0].domain, hwirq);
handle_IRQ(irq, regs);
}
static asmlinkage void __exception_irq_entry
mmp2_handle_irq(struct pt_regs *regs)
{
int irq, hwirq;
hwirq = readl_relaxed(mmp_icu_base + PJ4_INT_SEL);
if (!(hwirq & SEL_INT_PENDING))
return;
hwirq &= SEL_INT_NUM_MASK;
irq = irq_find_mapping(icu_data[0].domain, hwirq);
handle_IRQ(irq, regs);
}
/* MMP (ARMv5) */
void __init icu_init_irq(void)
{
@ -214,15 +241,13 @@ void __init icu_init_irq(void)
set_irq_flags(irq, IRQF_VALID);
}
irq_set_default_host(icu_data[0].domain);
#ifdef CONFIG_CPU_PXA910
icu_irq_chip.irq_set_wake = pxa910_set_wake;
#endif
set_handle_irq(mmp_handle_irq);
}
/* MMP2 (ARMv7) */
void __init mmp2_init_icu(void)
{
int irq;
int irq, end;
max_icu_nr = 8;
mmp_icu_base = ioremap(0xd4282000, 0x1000);
@ -236,11 +261,12 @@ void __init mmp2_init_icu(void)
&icu_data[0]);
icu_data[1].reg_status = mmp_icu_base + 0x150;
icu_data[1].reg_mask = mmp_icu_base + 0x168;
icu_data[1].clr_mfp_irq_base = IRQ_MMP2_PMIC_BASE;
icu_data[1].clr_mfp_hwirq = IRQ_MMP2_PMIC - IRQ_MMP2_PMIC_BASE;
icu_data[1].clr_mfp_irq_base = icu_data[0].virq_base +
icu_data[0].nr_irqs;
icu_data[1].clr_mfp_hwirq = 1; /* offset to IRQ_MMP2_PMIC_BASE */
icu_data[1].nr_irqs = 2;
icu_data[1].cascade_irq = 4;
icu_data[1].virq_base = IRQ_MMP2_PMIC_BASE;
icu_data[1].virq_base = icu_data[0].virq_base + icu_data[0].nr_irqs;
icu_data[1].domain = irq_domain_add_legacy(NULL, icu_data[1].nr_irqs,
icu_data[1].virq_base, 0,
&irq_domain_simple_ops,
@ -249,7 +275,7 @@ void __init mmp2_init_icu(void)
icu_data[2].reg_mask = mmp_icu_base + 0x16c;
icu_data[2].nr_irqs = 2;
icu_data[2].cascade_irq = 5;
icu_data[2].virq_base = IRQ_MMP2_RTC_BASE;
icu_data[2].virq_base = icu_data[1].virq_base + icu_data[1].nr_irqs;
icu_data[2].domain = irq_domain_add_legacy(NULL, icu_data[2].nr_irqs,
icu_data[2].virq_base, 0,
&irq_domain_simple_ops,
@ -258,7 +284,7 @@ void __init mmp2_init_icu(void)
icu_data[3].reg_mask = mmp_icu_base + 0x17c;
icu_data[3].nr_irqs = 3;
icu_data[3].cascade_irq = 9;
icu_data[3].virq_base = IRQ_MMP2_KEYPAD_BASE;
icu_data[3].virq_base = icu_data[2].virq_base + icu_data[2].nr_irqs;
icu_data[3].domain = irq_domain_add_legacy(NULL, icu_data[3].nr_irqs,
icu_data[3].virq_base, 0,
&irq_domain_simple_ops,
@ -267,7 +293,7 @@ void __init mmp2_init_icu(void)
icu_data[4].reg_mask = mmp_icu_base + 0x170;
icu_data[4].nr_irqs = 5;
icu_data[4].cascade_irq = 17;
icu_data[4].virq_base = IRQ_MMP2_TWSI_BASE;
icu_data[4].virq_base = icu_data[3].virq_base + icu_data[3].nr_irqs;
icu_data[4].domain = irq_domain_add_legacy(NULL, icu_data[4].nr_irqs,
icu_data[4].virq_base, 0,
&irq_domain_simple_ops,
@ -276,7 +302,7 @@ void __init mmp2_init_icu(void)
icu_data[5].reg_mask = mmp_icu_base + 0x174;
icu_data[5].nr_irqs = 15;
icu_data[5].cascade_irq = 35;
icu_data[5].virq_base = IRQ_MMP2_MISC_BASE;
icu_data[5].virq_base = icu_data[4].virq_base + icu_data[4].nr_irqs;
icu_data[5].domain = irq_domain_add_legacy(NULL, icu_data[5].nr_irqs,
icu_data[5].virq_base, 0,
&irq_domain_simple_ops,
@ -285,7 +311,7 @@ void __init mmp2_init_icu(void)
icu_data[6].reg_mask = mmp_icu_base + 0x178;
icu_data[6].nr_irqs = 2;
icu_data[6].cascade_irq = 51;
icu_data[6].virq_base = IRQ_MMP2_MIPI_HSI1_BASE;
icu_data[6].virq_base = icu_data[5].virq_base + icu_data[5].nr_irqs;
icu_data[6].domain = irq_domain_add_legacy(NULL, icu_data[6].nr_irqs,
icu_data[6].virq_base, 0,
&irq_domain_simple_ops,
@ -294,170 +320,176 @@ void __init mmp2_init_icu(void)
icu_data[7].reg_mask = mmp_icu_base + 0x184;
icu_data[7].nr_irqs = 2;
icu_data[7].cascade_irq = 55;
icu_data[7].virq_base = IRQ_MMP2_MIPI_HSI0_BASE;
icu_data[7].virq_base = icu_data[6].virq_base + icu_data[6].nr_irqs;
icu_data[7].domain = irq_domain_add_legacy(NULL, icu_data[7].nr_irqs,
icu_data[7].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[7]);
for (irq = 0; irq < IRQ_MMP2_MUX_END; irq++) {
end = icu_data[7].virq_base + icu_data[7].nr_irqs;
for (irq = 0; irq < end; irq++) {
icu_mask_irq(irq_get_irq_data(irq));
switch (irq) {
case IRQ_MMP2_PMIC_MUX:
case IRQ_MMP2_RTC_MUX:
case IRQ_MMP2_KEYPAD_MUX:
case IRQ_MMP2_TWSI_MUX:
case IRQ_MMP2_MISC_MUX:
case IRQ_MMP2_MIPI_HSI1_MUX:
case IRQ_MMP2_MIPI_HSI0_MUX:
if (irq == icu_data[1].cascade_irq ||
irq == icu_data[2].cascade_irq ||
irq == icu_data[3].cascade_irq ||
irq == icu_data[4].cascade_irq ||
irq == icu_data[5].cascade_irq ||
irq == icu_data[6].cascade_irq ||
irq == icu_data[7].cascade_irq) {
irq_set_chip(irq, &icu_irq_chip);
irq_set_chained_handler(irq, icu_mux_irq_demux);
break;
default:
} else {
irq_set_chip_and_handler(irq, &icu_irq_chip,
handle_level_irq);
break;
}
set_irq_flags(irq, IRQF_VALID);
}
irq_set_default_host(icu_data[0].domain);
#ifdef CONFIG_CPU_MMP2
icu_irq_chip.irq_set_wake = mmp2_set_wake;
#endif
set_handle_irq(mmp2_handle_irq);
}
#ifdef CONFIG_OF
static const struct of_device_id intc_ids[] __initconst = {
{ .compatible = "mrvl,mmp-intc", .data = &mmp_conf },
{ .compatible = "mrvl,mmp2-intc", .data = &mmp2_conf },
{}
};
static const struct of_device_id mmp_mux_irq_match[] __initconst = {
{ .compatible = "mrvl,mmp2-mux-intc" },
{}
};
int __init mmp2_mux_init(struct device_node *parent)
static int __init mmp_init_bases(struct device_node *node)
{
struct device_node *node;
const struct of_device_id *of_id;
struct resource res;
int i, irq_base, ret, irq;
u32 nr_irqs, mfp_irq;
node = parent;
max_icu_nr = 1;
for (i = 1; i < MAX_ICU_NR; i++) {
node = of_find_matching_node(node, mmp_mux_irq_match);
if (!node)
break;
of_id = of_match_node(&mmp_mux_irq_match[0], node);
ret = of_property_read_u32(node, "mrvl,intc-nr-irqs",
&nr_irqs);
if (ret) {
pr_err("Not found mrvl,intc-nr-irqs property\n");
ret = -EINVAL;
goto err;
}
ret = of_address_to_resource(node, 0, &res);
if (ret < 0) {
pr_err("Not found reg property\n");
ret = -EINVAL;
goto err;
}
icu_data[i].reg_status = mmp_icu_base + res.start;
ret = of_address_to_resource(node, 1, &res);
if (ret < 0) {
pr_err("Not found reg property\n");
ret = -EINVAL;
goto err;
}
icu_data[i].reg_mask = mmp_icu_base + res.start;
icu_data[i].cascade_irq = irq_of_parse_and_map(node, 0);
if (!icu_data[i].cascade_irq) {
ret = -EINVAL;
goto err;
}
irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0);
if (irq_base < 0) {
pr_err("Failed to allocate IRQ numbers for mux intc\n");
ret = irq_base;
goto err;
}
if (!of_property_read_u32(node, "mrvl,clr-mfp-irq",
&mfp_irq)) {
icu_data[i].clr_mfp_irq_base = irq_base;
icu_data[i].clr_mfp_hwirq = mfp_irq;
}
irq_set_chained_handler(icu_data[i].cascade_irq,
icu_mux_irq_demux);
icu_data[i].nr_irqs = nr_irqs;
icu_data[i].virq_base = irq_base;
icu_data[i].domain = irq_domain_add_legacy(node, nr_irqs,
irq_base, 0,
&mmp_irq_domain_ops,
&icu_data[i]);
for (irq = irq_base; irq < irq_base + nr_irqs; irq++)
icu_mask_irq(irq_get_irq_data(irq));
}
max_icu_nr = i;
return 0;
err:
of_node_put(node);
max_icu_nr = i;
return ret;
}
void __init mmp_dt_irq_init(void)
{
struct device_node *node;
const struct of_device_id *of_id;
struct mmp_intc_conf *conf;
int nr_irqs, irq_base, ret, irq;
node = of_find_matching_node(NULL, intc_ids);
if (!node) {
pr_err("Failed to find interrupt controller in arch-mmp\n");
return;
}
of_id = of_match_node(intc_ids, node);
conf = of_id->data;
int ret, nr_irqs, irq, i = 0;
ret = of_property_read_u32(node, "mrvl,intc-nr-irqs", &nr_irqs);
if (ret) {
pr_err("Not found mrvl,intc-nr-irqs property\n");
return;
return ret;
}
mmp_icu_base = of_iomap(node, 0);
if (!mmp_icu_base) {
pr_err("Failed to get interrupt controller register\n");
return;
return -ENOMEM;
}
irq_base = irq_alloc_descs(-1, 0, nr_irqs - NR_IRQS_LEGACY, 0);
if (irq_base < 0) {
pr_err("Failed to allocate IRQ numbers\n");
goto err;
} else if (irq_base != NR_IRQS_LEGACY) {
pr_err("ICU's irqbase should be started from 0\n");
goto err;
}
icu_data[0].conf_enable = conf->conf_enable;
icu_data[0].conf_disable = conf->conf_disable;
icu_data[0].conf_mask = conf->conf_mask;
icu_data[0].nr_irqs = nr_irqs;
icu_data[0].virq_base = 0;
icu_data[0].domain = irq_domain_add_legacy(node, nr_irqs, 0, 0,
icu_data[0].domain = irq_domain_add_linear(node, nr_irqs,
&mmp_irq_domain_ops,
&icu_data[0]);
irq_set_default_host(icu_data[0].domain);
for (irq = 0; irq < nr_irqs; irq++)
icu_mask_irq(irq_get_irq_data(irq));
mmp2_mux_init(node);
return;
for (irq = 0; irq < nr_irqs; irq++) {
ret = irq_create_mapping(icu_data[0].domain, irq);
if (!ret) {
pr_err("Failed to mapping hwirq\n");
goto err;
}
if (!irq)
icu_data[0].virq_base = ret;
}
icu_data[0].nr_irqs = nr_irqs;
return 0;
err:
if (icu_data[0].virq_base) {
for (i = 0; i < irq; i++)
irq_dispose_mapping(icu_data[0].virq_base + i);
}
irq_domain_remove(icu_data[0].domain);
iounmap(mmp_icu_base);
return -EINVAL;
}
static int __init mmp_of_init(struct device_node *node,
struct device_node *parent)
{
int ret;
ret = mmp_init_bases(node);
if (ret < 0)
return ret;
icu_data[0].conf_enable = mmp_conf.conf_enable;
icu_data[0].conf_disable = mmp_conf.conf_disable;
icu_data[0].conf_mask = mmp_conf.conf_mask;
irq_set_default_host(icu_data[0].domain);
set_handle_irq(mmp_handle_irq);
max_icu_nr = 1;
return 0;
}
IRQCHIP_DECLARE(mmp_intc, "mrvl,mmp-intc", mmp_of_init);
static int __init mmp2_of_init(struct device_node *node,
struct device_node *parent)
{
int ret;
ret = mmp_init_bases(node);
if (ret < 0)
return ret;
icu_data[0].conf_enable = mmp2_conf.conf_enable;
icu_data[0].conf_disable = mmp2_conf.conf_disable;
icu_data[0].conf_mask = mmp2_conf.conf_mask;
irq_set_default_host(icu_data[0].domain);
set_handle_irq(mmp2_handle_irq);
max_icu_nr = 1;
return 0;
}
IRQCHIP_DECLARE(mmp2_intc, "mrvl,mmp2-intc", mmp2_of_init);
static int __init mmp2_mux_of_init(struct device_node *node,
struct device_node *parent)
{
struct resource res;
int i, ret, irq, j = 0;
u32 nr_irqs, mfp_irq;
if (!parent)
return -ENODEV;
i = max_icu_nr;
ret = of_property_read_u32(node, "mrvl,intc-nr-irqs",
&nr_irqs);
if (ret) {
pr_err("Not found mrvl,intc-nr-irqs property\n");
return -EINVAL;
}
ret = of_address_to_resource(node, 0, &res);
if (ret < 0) {
pr_err("Not found reg property\n");
return -EINVAL;
}
icu_data[i].reg_status = mmp_icu_base + res.start;
ret = of_address_to_resource(node, 1, &res);
if (ret < 0) {
pr_err("Not found reg property\n");
return -EINVAL;
}
icu_data[i].reg_mask = mmp_icu_base + res.start;
icu_data[i].cascade_irq = irq_of_parse_and_map(node, 0);
if (!icu_data[i].cascade_irq)
return -EINVAL;
icu_data[i].virq_base = 0;
icu_data[i].domain = irq_domain_add_linear(node, nr_irqs,
&mmp_irq_domain_ops,
&icu_data[i]);
for (irq = 0; irq < nr_irqs; irq++) {
ret = irq_create_mapping(icu_data[i].domain, irq);
if (!ret) {
pr_err("Failed to mapping hwirq\n");
goto err;
}
if (!irq)
icu_data[i].virq_base = ret;
}
icu_data[i].nr_irqs = nr_irqs;
if (!of_property_read_u32(node, "mrvl,clr-mfp-irq",
&mfp_irq)) {
icu_data[i].clr_mfp_irq_base = icu_data[i].virq_base;
icu_data[i].clr_mfp_hwirq = mfp_irq;
}
irq_set_chained_handler(icu_data[i].cascade_irq,
icu_mux_irq_demux);
max_icu_nr++;
return 0;
err:
if (icu_data[i].virq_base) {
for (j = 0; j < irq; j++)
irq_dispose_mapping(icu_data[i].virq_base + j);
}
irq_domain_remove(icu_data[i].domain);
return -EINVAL;
}
IRQCHIP_DECLARE(mmp2_mux_intc, "mrvl,mmp2-mux-intc", mmp2_mux_of_init);
#endif

6
include/linux/irqchip/mmp.h Normal file
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@ -0,0 +1,6 @@
#ifndef __IRQCHIP_MMP_H
#define __IRQCHIP_MMP_H
extern struct irq_chip icu_irq_chip;
#endif /* __IRQCHIP_MMP_H */