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ARM: mmp: support DT in irq

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Merge irq-pxa168 and irq-mmp2. And support device tree also.

Since CONFIG_SPARSE_IRQ is enabled in arch-mmp, base irq starts from
NR_IRQS_LEGACY.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Haojian Zhuang 2012-04-12 19:02:02 +08:00
parent 3f4dd3224d
commit c24b31147a
7 changed files with 472 additions and 225 deletions
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1
arch/arm/Kconfig
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@ -632,6 +632,7 @@ config ARCH_MMP
select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select GPIO_PXA
select IRQ_DOMAIN
select TICK_ONESHOT
select PLAT_PXA
select SPARSE_IRQ

8
arch/arm/mach-mmp/Makefile
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@ -2,12 +2,12 @@
# Makefile for Marvell's PXA168 processors line
#
obj-y += common.o clock.o devices.o time.o
obj-y += common.o clock.o devices.o time.o irq.o
# SoC support
obj-$(CONFIG_CPU_PXA168) += pxa168.o irq-pxa168.o
obj-$(CONFIG_CPU_PXA910) += pxa910.o irq-pxa168.o
obj-$(CONFIG_CPU_MMP2) += mmp2.o irq-mmp2.o sram.o
obj-$(CONFIG_CPU_PXA168) += pxa168.o
obj-$(CONFIG_CPU_PXA910) += pxa910.o
obj-$(CONFIG_CPU_MMP2) += mmp2.o sram.o
# board support
obj-$(CONFIG_MACH_ASPENITE) += aspenite.o

4
arch/arm/mach-mmp/include/mach/entry-macro.S
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@ -6,13 +6,15 @@
* 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, =ICU_VIRT_BASE
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

27
arch/arm/mach-mmp/include/mach/irqs.h
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@ -125,7 +125,7 @@
#define IRQ_MMP2_RTC_MUX 5
#define IRQ_MMP2_TWSI1 7
#define IRQ_MMP2_GPU 8
#define IRQ_MMP2_KEYPAD 9
#define IRQ_MMP2_KEYPAD_MUX 9
#define IRQ_MMP2_ROTARY 10
#define IRQ_MMP2_TRACKBALL 11
#define IRQ_MMP2_ONEWIRE 12
@ -163,11 +163,11 @@
#define IRQ_MMP2_DMA_FIQ 47
#define IRQ_MMP2_DMA_RIQ 48
#define IRQ_MMP2_GPIO 49
#define IRQ_MMP2_SSP_MUX 51
#define IRQ_MMP2_MIPI_HSI1_MUX 51
#define IRQ_MMP2_MMC2 52
#define IRQ_MMP2_MMC3 53
#define IRQ_MMP2_MMC4 54
#define IRQ_MMP2_MIPI_HSI 55
#define IRQ_MMP2_MIPI_HSI0_MUX 55
#define IRQ_MMP2_MSP 58
#define IRQ_MMP2_MIPI_SLIM_DMA 59
#define IRQ_MMP2_PJ4_FREQ_CHG 60
@ -186,8 +186,14 @@
#define IRQ_MMP2_RTC_ALARM (IRQ_MMP2_RTC_BASE + 0)
#define IRQ_MMP2_RTC (IRQ_MMP2_RTC_BASE + 1)
/* secondary interrupt of INT #9 */
#define IRQ_MMP2_KEYPAD_BASE (IRQ_MMP2_RTC_BASE + 2)
#define IRQ_MMP2_KPC (IRQ_MMP2_KEYPAD_BASE + 0)
#define IRQ_MMP2_ROTORY (IRQ_MMP2_KEYPAD_BASE + 1)
#define IRQ_MMP2_TBALL (IRQ_MMP2_KEYPAD_BASE + 2)
/* secondary interrupt of INT #17 */
#define IRQ_MMP2_TWSI_BASE (IRQ_MMP2_RTC_BASE + 2)
#define IRQ_MMP2_TWSI_BASE (IRQ_MMP2_KEYPAD_BASE + 3)
#define IRQ_MMP2_TWSI2 (IRQ_MMP2_TWSI_BASE + 0)
#define IRQ_MMP2_TWSI3 (IRQ_MMP2_TWSI_BASE + 1)
#define IRQ_MMP2_TWSI4 (IRQ_MMP2_TWSI_BASE + 2)
@ -212,11 +218,16 @@
#define IRQ_MMP2_COMMRX (IRQ_MMP2_MISC_BASE + 14)
/* secondary interrupt of INT #51 */
#define IRQ_MMP2_SSP_BASE (IRQ_MMP2_MISC_BASE + 15)
#define IRQ_MMP2_SSP1_SRDY (IRQ_MMP2_SSP_BASE + 0)
#define IRQ_MMP2_SSP3_SRDY (IRQ_MMP2_SSP_BASE + 1)
#define IRQ_MMP2_MIPI_HSI1_BASE (IRQ_MMP2_MISC_BASE + 15)
#define IRQ_MMP2_HSI1_CAWAKE (IRQ_MMP2_MIPI_HSI1_BASE + 0)
#define IRQ_MMP2_MIPI_HSI_INT1 (IRQ_MMP2_MIPI_HSI1_BASE + 1)
#define IRQ_MMP2_MUX_END (IRQ_MMP2_SSP_BASE + 2)
/* secondary interrupt of INT #55 */
#define IRQ_MMP2_MIPI_HSI0_BASE (IRQ_MMP2_MIPI_HSI1_BASE + 2)
#define IRQ_MMP2_HSI0_CAWAKE (IRQ_MMP2_MIPI_HSI0_BASE + 0)
#define IRQ_MMP2_MIPI_HSI_INT0 (IRQ_MMP2_MIPI_HSI0_BASE + 1)
#define IRQ_MMP2_MUX_END (IRQ_MMP2_MIPI_HSI0_BASE + 2)
#define IRQ_GPIO_START 128
#define MMP_NR_BUILTIN_GPIO 192

158
arch/arm/mach-mmp/irq-mmp2.c
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@ -1,158 +0,0 @@
/*
* linux/arch/arm/mach-mmp/irq-mmp2.c
*
* Generic IRQ handling, GPIO IRQ demultiplexing, etc.
*
* Author: Haojian Zhuang <haojian.zhuang@marvell.com>
* Copyright: Marvell International Ltd.
*
* 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 <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <mach/irqs.h>
#include <mach/regs-icu.h>
#include <mach/mmp2.h>
#include "common.h"
static void icu_mask_irq(struct irq_data *d)
{
uint32_t r = __raw_readl(ICU_INT_CONF(d->irq));
r &= ~ICU_INT_ROUTE_PJ4_IRQ;
__raw_writel(r, ICU_INT_CONF(d->irq));
}
static void icu_unmask_irq(struct irq_data *d)
{
uint32_t r = __raw_readl(ICU_INT_CONF(d->irq));
r |= ICU_INT_ROUTE_PJ4_IRQ;
__raw_writel(r, ICU_INT_CONF(d->irq));
}
static struct irq_chip icu_irq_chip = {
.name = "icu_irq",
.irq_mask = icu_mask_irq,
.irq_mask_ack = icu_mask_irq,
.irq_unmask = icu_unmask_irq,
};
static void pmic_irq_ack(struct irq_data *d)
{
if (d->irq == IRQ_MMP2_PMIC)
mmp2_clear_pmic_int();
}
#define SECOND_IRQ_MASK(_name_, irq_base, prefix) \
static void _name_##_mask_irq(struct irq_data *d) \
{ \
uint32_t r; \
r = __raw_readl(prefix##_MASK) | (1 << (d->irq - irq_base)); \
__raw_writel(r, prefix##_MASK); \
}
#define SECOND_IRQ_UNMASK(_name_, irq_base, prefix) \
static void _name_##_unmask_irq(struct irq_data *d) \
{ \
uint32_t r; \
r = __raw_readl(prefix##_MASK) & ~(1 << (d->irq - irq_base)); \
__raw_writel(r, prefix##_MASK); \
}
#define SECOND_IRQ_DEMUX(_name_, irq_base, prefix) \
static void _name_##_irq_demux(unsigned int irq, struct irq_desc *desc) \
{ \
unsigned long status, mask, n; \
mask = __raw_readl(prefix##_MASK); \
while (1) { \
status = __raw_readl(prefix##_STATUS) & ~mask; \
if (status == 0) \
break; \
n = find_first_bit(&status, BITS_PER_LONG); \
while (n < BITS_PER_LONG) { \
generic_handle_irq(irq_base + n); \
n = find_next_bit(&status, BITS_PER_LONG, n+1); \
} \
} \
}
#define SECOND_IRQ_CHIP(_name_, irq_base, prefix) \
SECOND_IRQ_MASK(_name_, irq_base, prefix) \
SECOND_IRQ_UNMASK(_name_, irq_base, prefix) \
SECOND_IRQ_DEMUX(_name_, irq_base, prefix) \
static struct irq_chip _name_##_irq_chip = { \
.name = #_name_, \
.irq_mask = _name_##_mask_irq, \
.irq_unmask = _name_##_unmask_irq, \
}
SECOND_IRQ_CHIP(pmic, IRQ_MMP2_PMIC_BASE, MMP2_ICU_INT4);
SECOND_IRQ_CHIP(rtc, IRQ_MMP2_RTC_BASE, MMP2_ICU_INT5);
SECOND_IRQ_CHIP(twsi, IRQ_MMP2_TWSI_BASE, MMP2_ICU_INT17);
SECOND_IRQ_CHIP(misc, IRQ_MMP2_MISC_BASE, MMP2_ICU_INT35);
SECOND_IRQ_CHIP(ssp, IRQ_MMP2_SSP_BASE, MMP2_ICU_INT51);
static void init_mux_irq(struct irq_chip *chip, int start, int num)
{
int irq;
for (irq = start; num > 0; irq++, num--) {
struct irq_data *d = irq_get_irq_data(irq);
/* mask and clear the IRQ */
chip->irq_mask(d);
if (chip->irq_ack)
chip->irq_ack(d);
irq_set_chip(irq, chip);
set_irq_flags(irq, IRQF_VALID);
irq_set_handler(irq, handle_level_irq);
}
}
void __init mmp2_init_icu(void)
{
int irq;
for (irq = 0; irq < IRQ_MMP2_MUX_BASE; irq++) {
icu_mask_irq(irq_get_irq_data(irq));
irq_set_chip(irq, &icu_irq_chip);
set_irq_flags(irq, IRQF_VALID);
switch (irq) {
case IRQ_MMP2_PMIC_MUX:
case IRQ_MMP2_RTC_MUX:
case IRQ_MMP2_TWSI_MUX:
case IRQ_MMP2_MISC_MUX:
case IRQ_MMP2_SSP_MUX:
break;
default:
irq_set_handler(irq, handle_level_irq);
break;
}
}
/* NOTE: IRQ_MMP2_PMIC requires the PMIC MFPR register
* to be written to clear the interrupt
*/
pmic_irq_chip.irq_ack = pmic_irq_ack;
init_mux_irq(&pmic_irq_chip, IRQ_MMP2_PMIC_BASE, 2);
init_mux_irq(&rtc_irq_chip, IRQ_MMP2_RTC_BASE, 2);
init_mux_irq(&twsi_irq_chip, IRQ_MMP2_TWSI_BASE, 5);
init_mux_irq(&misc_irq_chip, IRQ_MMP2_MISC_BASE, 15);
init_mux_irq(&ssp_irq_chip, IRQ_MMP2_SSP_BASE, 2);
irq_set_chained_handler(IRQ_MMP2_PMIC_MUX, pmic_irq_demux);
irq_set_chained_handler(IRQ_MMP2_RTC_MUX, rtc_irq_demux);
irq_set_chained_handler(IRQ_MMP2_TWSI_MUX, twsi_irq_demux);
irq_set_chained_handler(IRQ_MMP2_MISC_MUX, misc_irq_demux);
irq_set_chained_handler(IRQ_MMP2_SSP_MUX, ssp_irq_demux);
}

54
arch/arm/mach-mmp/irq-pxa168.c
View File

@ -1,54 +0,0 @@
/*
* linux/arch/arm/mach-mmp/irq.c
*
* Generic IRQ handling, GPIO IRQ demultiplexing, etc.
*
* Author: Bin Yang <bin.yang@marvell.com>
* Created: Sep 30, 2008
* Copyright: Marvell International Ltd.
*
* 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 <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <mach/regs-icu.h>
#include "common.h"
#define IRQ_ROUTE_TO_AP (ICU_INT_CONF_AP_INT | ICU_INT_CONF_IRQ)
#define PRIORITY_DEFAULT 0x1
#define PRIORITY_NONE 0x0 /* means IRQ disabled */
static void icu_mask_irq(struct irq_data *d)
{
__raw_writel(PRIORITY_NONE, ICU_INT_CONF(d->irq));
}
static void icu_unmask_irq(struct irq_data *d)
{
__raw_writel(IRQ_ROUTE_TO_AP | PRIORITY_DEFAULT, ICU_INT_CONF(d->irq));
}
static struct irq_chip icu_irq_chip = {
.name = "icu_irq",
.irq_ack = icu_mask_irq,
.irq_mask = icu_mask_irq,
.irq_unmask = icu_unmask_irq,
};
void __init icu_init_irq(void)
{
int irq;
for (irq = 0; irq < 64; irq++) {
icu_mask_irq(irq_get_irq_data(irq));
irq_set_chip_and_handler(irq, &icu_irq_chip, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
}

445
arch/arm/mach-mmp/irq.c Normal file
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@ -0,0 +1,445 @@
/*
* linux/arch/arm/mach-mmp/irq.c
*
* Generic IRQ handling, GPIO IRQ demultiplexing, etc.
* Copyright (C) 2008 - 2012 Marvell Technology Group Ltd.
*
* Author: Bin Yang <bin.yang@marvell.com>
* Haojian Zhuang <haojian.zhuang@gmail.com>
*
* 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 <linux/module.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <mach/irqs.h>
#include "common.h"
#define MAX_ICU_NR 16
struct icu_chip_data {
int nr_irqs;
unsigned int virq_base;
unsigned int cascade_irq;
void __iomem *reg_status;
void __iomem *reg_mask;
unsigned int conf_enable;
unsigned int conf_disable;
unsigned int conf_mask;
unsigned int clr_mfp_irq_base;
unsigned int clr_mfp_hwirq;
struct irq_domain *domain;
};
struct mmp_intc_conf {
unsigned int conf_enable;
unsigned int conf_disable;
unsigned int conf_mask;
};
void __iomem *mmp_icu_base;
static struct icu_chip_data icu_data[MAX_ICU_NR];
static int max_icu_nr;
extern void mmp2_clear_pmic_int(void);
static void icu_mask_ack_irq(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct icu_chip_data *data = (struct icu_chip_data *)domain->host_data;
int hwirq;
u32 r;
hwirq = d->irq - data->virq_base;
if (data == &icu_data[0]) {
r = readl_relaxed(mmp_icu_base + (hwirq << 2));
r &= ~data->conf_mask;
r |= data->conf_disable;
writel_relaxed(r, mmp_icu_base + (hwirq << 2));
} else {
#ifdef CONFIG_CPU_MMP2
if ((data->virq_base == data->clr_mfp_irq_base)
&& (hwirq == data->clr_mfp_hwirq))
mmp2_clear_pmic_int();
#endif
r = readl_relaxed(data->reg_mask) | (1 << hwirq);
writel_relaxed(r, data->reg_mask);
}
}
static void icu_mask_irq(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct icu_chip_data *data = (struct icu_chip_data *)domain->host_data;
int hwirq;
u32 r;
hwirq = d->irq - data->virq_base;
if (data == &icu_data[0]) {
r = readl_relaxed(mmp_icu_base + (hwirq << 2));
r &= ~data->conf_mask;
r |= data->conf_disable;
writel_relaxed(r, mmp_icu_base + (hwirq << 2));
} else {
r = readl_relaxed(data->reg_mask) | (1 << hwirq);
writel_relaxed(r, data->reg_mask);
}
}
static void icu_unmask_irq(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct icu_chip_data *data = (struct icu_chip_data *)domain->host_data;
int hwirq;
u32 r;
hwirq = d->irq - data->virq_base;
if (data == &icu_data[0]) {
r = readl_relaxed(mmp_icu_base + (hwirq << 2));
r &= ~data->conf_mask;
r |= data->conf_enable;
writel_relaxed(r, mmp_icu_base + (hwirq << 2));
} else {
r = readl_relaxed(data->reg_mask) & ~(1 << hwirq);
writel_relaxed(r, data->reg_mask);
}
}
static struct irq_chip icu_irq_chip = {
.name = "icu_irq",
.irq_mask = icu_mask_irq,
.irq_mask_ack = icu_mask_ack_irq,
.irq_unmask = icu_unmask_irq,
};
static void icu_mux_irq_demux(unsigned int irq, struct irq_desc *desc)
{
struct irq_domain *domain;
struct icu_chip_data *data;
int i;
unsigned long mask, status, n;
for (i = 1; i < max_icu_nr; i++) {
if (irq == icu_data[i].cascade_irq) {
domain = icu_data[i].domain;
data = (struct icu_chip_data *)domain->host_data;
break;
}
}
if (i >= max_icu_nr) {
pr_err("Spurious irq %d in MMP INTC\n", irq);
return;
}
mask = readl_relaxed(data->reg_mask);
while (1) {
status = readl_relaxed(data->reg_status) & ~mask;
if (status == 0)
break;
n = find_first_bit(&status, BITS_PER_LONG);
while (n < BITS_PER_LONG) {
generic_handle_irq(icu_data[i].virq_base + n);
n = find_next_bit(&status, BITS_PER_LONG, n + 1);
}
}
}
static int mmp_irq_domain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hw)
{
irq_set_chip_and_handler(irq, &icu_irq_chip, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
return 0;
}
static int mmp_irq_domain_xlate(struct irq_domain *d, struct device_node *node,
const u32 *intspec, unsigned int intsize,
unsigned long *out_hwirq,
unsigned int *out_type)
{
*out_hwirq = intspec[0];
return 0;
}
const struct irq_domain_ops mmp_irq_domain_ops = {
.map = mmp_irq_domain_map,
.xlate = mmp_irq_domain_xlate,
};
static struct mmp_intc_conf mmp_conf = {
.conf_enable = 0x51,
.conf_disable = 0x0,
.conf_mask = 0x7f,
};
static struct mmp_intc_conf mmp2_conf = {
.conf_enable = 0x20,
.conf_disable = 0x0,
.conf_mask = 0x7f,
};
/* MMP (ARMv5) */
void __init icu_init_irq(void)
{
int irq;
max_icu_nr = 1;
mmp_icu_base = ioremap(0xd4282000, 0x1000);
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;
icu_data[0].nr_irqs = 64;
icu_data[0].virq_base = 0;
icu_data[0].domain = irq_domain_add_legacy(NULL, 64, 0, 0,
&irq_domain_simple_ops,
&icu_data[0]);
for (irq = 0; irq < 64; irq++) {
icu_mask_irq(irq_get_irq_data(irq));
irq_set_chip_and_handler(irq, &icu_irq_chip, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
irq_set_default_host(icu_data[0].domain);
}
/* MMP2 (ARMv7) */
void __init mmp2_init_icu(void)
{
int irq;
max_icu_nr = 8;
mmp_icu_base = ioremap(0xd4282000, 0x1000);
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;
icu_data[0].nr_irqs = 64;
icu_data[0].virq_base = 0;
icu_data[0].domain = irq_domain_add_legacy(NULL, 64, 0, 0,
&irq_domain_simple_ops,
&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].nr_irqs = 2;
icu_data[1].virq_base = IRQ_MMP2_PMIC_BASE;
icu_data[1].domain = irq_domain_add_legacy(NULL, icu_data[1].nr_irqs,
icu_data[1].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[1]);
icu_data[2].reg_status = mmp_icu_base + 0x154;
icu_data[2].reg_mask = mmp_icu_base + 0x16c;
icu_data[2].nr_irqs = 2;
icu_data[2].virq_base = IRQ_MMP2_RTC_BASE;
icu_data[2].domain = irq_domain_add_legacy(NULL, icu_data[2].nr_irqs,
icu_data[2].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[2]);
icu_data[3].reg_status = mmp_icu_base + 0x180;
icu_data[3].reg_mask = mmp_icu_base + 0x17c;
icu_data[3].nr_irqs = 3;
icu_data[3].virq_base = IRQ_MMP2_KEYPAD_BASE;
icu_data[3].domain = irq_domain_add_legacy(NULL, icu_data[3].nr_irqs,
icu_data[3].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[3]);
icu_data[4].reg_status = mmp_icu_base + 0x158;
icu_data[4].reg_mask = mmp_icu_base + 0x170;
icu_data[4].nr_irqs = 5;
icu_data[4].virq_base = IRQ_MMP2_TWSI_BASE;
icu_data[4].domain = irq_domain_add_legacy(NULL, icu_data[4].nr_irqs,
icu_data[4].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[4]);
icu_data[5].reg_status = mmp_icu_base + 0x15c;
icu_data[5].reg_mask = mmp_icu_base + 0x174;
icu_data[5].nr_irqs = 15;
icu_data[5].virq_base = IRQ_MMP2_MISC_BASE;
icu_data[5].domain = irq_domain_add_legacy(NULL, icu_data[5].nr_irqs,
icu_data[5].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[5]);
icu_data[6].reg_status = mmp_icu_base + 0x160;
icu_data[6].reg_mask = mmp_icu_base + 0x178;
icu_data[6].nr_irqs = 2;
icu_data[6].virq_base = IRQ_MMP2_MIPI_HSI1_BASE;
icu_data[6].domain = irq_domain_add_legacy(NULL, icu_data[6].nr_irqs,
icu_data[6].virq_base, 0,
&irq_domain_simple_ops,
&icu_data[6]);
icu_data[7].reg_status = mmp_icu_base + 0x188;
icu_data[7].reg_mask = mmp_icu_base + 0x184;
icu_data[7].nr_irqs = 2;
icu_data[7].virq_base = IRQ_MMP2_MIPI_HSI0_BASE;
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++) {
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:
irq_set_chip(irq, &icu_irq_chip);
irq_set_chained_handler(irq, icu_mux_irq_demux);
break;
default:
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_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)
{
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;
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;
}
mmp_icu_base = of_iomap(node, 0);
if (!mmp_icu_base) {
pr_err("Failed to get interrupt controller register\n");
return;
}
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,
&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;
err:
iounmap(mmp_icu_base);
}
#endif