[PATCH v2 3/9] ARM: mmp: support DT in irq
Grant Likely
grant.likely at secretlab.ca
Tue May 8 13:56:06 EDT 2012
On Fri, 4 May 2012 20:30:20 +0800, Haojian Zhuang <haojian.zhuang at gmail.com> wrote:
> 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 at gmail.com>
This is a really big change and difficult to review for regressions.
Is there any way you can break it down into incremental steps? ie.
something like:
- first rename one of the drivers,
- factor out commit bits,
- pull in features from the other irq driver
- add DT support
> ---
> arch/arm/Kconfig | 1 +
> arch/arm/mach-mmp/Makefile | 8 +-
> arch/arm/mach-mmp/include/mach/entry-macro.S | 4 +-
> arch/arm/mach-mmp/include/mach/irqs.h | 27 ++-
> arch/arm/mach-mmp/irq-mmp2.c | 158 ---------
> arch/arm/mach-mmp/irq-pxa168.c | 54 ---
> arch/arm/mach-mmp/irq.c | 445 ++++++++++++++++++++++++++
> 7 files changed, 472 insertions(+), 225 deletions(-)
> delete mode 100644 arch/arm/mach-mmp/irq-mmp2.c
> delete mode 100644 arch/arm/mach-mmp/irq-pxa168.c
> create mode 100644 arch/arm/mach-mmp/irq.c
>
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index cf006d4..4cf9d42 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -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
> diff --git a/arch/arm/mach-mmp/Makefile b/arch/arm/mach-mmp/Makefile
> index 4fc0ff5..77f63c1 100644
> --- a/arch/arm/mach-mmp/Makefile
> +++ b/arch/arm/mach-mmp/Makefile
> @@ -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
> diff --git a/arch/arm/mach-mmp/include/mach/entry-macro.S b/arch/arm/mach-mmp/include/mach/entry-macro.S
> index 9cff9e7..bd152e2 100644
> --- a/arch/arm/mach-mmp/include/mach/entry-macro.S
> +++ b/arch/arm/mach-mmp/include/mach/entry-macro.S
> @@ -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
> diff --git a/arch/arm/mach-mmp/include/mach/irqs.h b/arch/arm/mach-mmp/include/mach/irqs.h
> index d0e7466..fb492a5 100644
> --- a/arch/arm/mach-mmp/include/mach/irqs.h
> +++ b/arch/arm/mach-mmp/include/mach/irqs.h
> @@ -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)
> +
> +/* 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_SSP_BASE + 2)
> +#define IRQ_MMP2_MUX_END (IRQ_MMP2_MIPI_HSI0_BASE + 2)
>
> #define IRQ_GPIO_START 128
> #define MMP_NR_BUILTIN_GPIO 192
> diff --git a/arch/arm/mach-mmp/irq-mmp2.c b/arch/arm/mach-mmp/irq-mmp2.c
> deleted file mode 100644
> index 7895d27..0000000
> --- a/arch/arm/mach-mmp/irq-mmp2.c
> +++ /dev/null
> @@ -1,158 +0,0 @@
> -/*
> - * linux/arch/arm/mach-mmp/irq-mmp2.c
> - *
> - * Generic IRQ handling, GPIO IRQ demultiplexing, etc.
> - *
> - * Author: Haojian Zhuang <haojian.zhuang at 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);
> -}
> diff --git a/arch/arm/mach-mmp/irq-pxa168.c b/arch/arm/mach-mmp/irq-pxa168.c
> deleted file mode 100644
> index 89706a0..0000000
> --- a/arch/arm/mach-mmp/irq-pxa168.c
> +++ /dev/null
> @@ -1,54 +0,0 @@
> -/*
> - * linux/arch/arm/mach-mmp/irq.c
> - *
> - * Generic IRQ handling, GPIO IRQ demultiplexing, etc.
> - *
> - * Author: Bin Yang <bin.yang at 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);
> - }
> -}
> diff --git a/arch/arm/mach-mmp/irq.c b/arch/arm/mach-mmp/irq.c
> new file mode 100644
> index 0000000..3705470
> --- /dev/null
> +++ b/arch/arm/mach-mmp/irq.c
> @@ -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 at marvell.com>
> + * Haojian Zhuang <haojian.zhuang at 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
> --
> 1.7.5.4
>
--
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.
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