diff options
Diffstat (limited to 'arch/arm/mach-w90x900/irq.c')
| -rw-r--r-- | arch/arm/mach-w90x900/irq.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/arch/arm/mach-w90x900/irq.c b/arch/arm/mach-w90x900/irq.c deleted file mode 100644 index 081b0f65477a..000000000000 --- a/arch/arm/mach-w90x900/irq.c +++ /dev/null @@ -1,212 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * linux/arch/arm/mach-w90x900/irq.c - * - * based on linux/arch/arm/plat-s3c24xx/irq.c by Ben Dooks - * - * Copyright (c) 2008 Nuvoton technology corporation - * All rights reserved. - * - * Wan ZongShun <mcuos.com@gmail.com> - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/ptrace.h> -#include <linux/device.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <asm/mach/irq.h> - -#include <mach/hardware.h> -#include <mach/regs-irq.h> - -#include "nuc9xx.h" - -struct group_irq { - unsigned long gpen; - unsigned int enabled; - void (*enable)(struct group_irq *, int enable); -}; - -static DEFINE_SPINLOCK(groupirq_lock); - -#define DEFINE_GROUP(_name, _ctrlbit, _num) \ -struct group_irq group_##_name = { \ - .enable = nuc900_group_enable, \ - .gpen = ((1 << _num) - 1) << _ctrlbit, \ - } - -static void nuc900_group_enable(struct group_irq *gpirq, int enable); - -static DEFINE_GROUP(nirq0, 0, 4); -static DEFINE_GROUP(nirq1, 4, 4); -static DEFINE_GROUP(usbh, 8, 2); -static DEFINE_GROUP(ottimer, 16, 3); -static DEFINE_GROUP(gdma, 20, 2); -static DEFINE_GROUP(sc, 24, 2); -static DEFINE_GROUP(i2c, 26, 2); -static DEFINE_GROUP(ps2, 28, 2); - -static int group_irq_enable(struct group_irq *group_irq) -{ - unsigned long flags; - - spin_lock_irqsave(&groupirq_lock, flags); - if (group_irq->enabled++ == 0) - (group_irq->enable)(group_irq, 1); - spin_unlock_irqrestore(&groupirq_lock, flags); - - return 0; -} - -static void group_irq_disable(struct group_irq *group_irq) -{ - unsigned long flags; - - WARN_ON(group_irq->enabled == 0); - - spin_lock_irqsave(&groupirq_lock, flags); - if (--group_irq->enabled == 0) - (group_irq->enable)(group_irq, 0); - spin_unlock_irqrestore(&groupirq_lock, flags); -} - -static void nuc900_group_enable(struct group_irq *gpirq, int enable) -{ - unsigned int groupen = gpirq->gpen; - unsigned long regval; - - regval = __raw_readl(REG_AIC_GEN); - - if (enable) - regval |= groupen; - else - regval &= ~groupen; - - __raw_writel(regval, REG_AIC_GEN); -} - -static void nuc900_irq_mask(struct irq_data *d) -{ - struct group_irq *group_irq; - - group_irq = NULL; - - __raw_writel(1 << d->irq, REG_AIC_MDCR); - - switch (d->irq) { - case IRQ_GROUP0: - group_irq = &group_nirq0; - break; - - case IRQ_GROUP1: - group_irq = &group_nirq1; - break; - - case IRQ_USBH: - group_irq = &group_usbh; - break; - - case IRQ_T_INT_GROUP: - group_irq = &group_ottimer; - break; - - case IRQ_GDMAGROUP: - group_irq = &group_gdma; - break; - - case IRQ_SCGROUP: - group_irq = &group_sc; - break; - - case IRQ_I2CGROUP: - group_irq = &group_i2c; - break; - - case IRQ_P2SGROUP: - group_irq = &group_ps2; - break; - } - - if (group_irq) - group_irq_disable(group_irq); -} - -/* - * By the w90p910 spec,any irq,only write 1 - * to REG_AIC_EOSCR for ACK - */ - -static void nuc900_irq_ack(struct irq_data *d) -{ - __raw_writel(0x01, REG_AIC_EOSCR); -} - -static void nuc900_irq_unmask(struct irq_data *d) -{ - struct group_irq *group_irq; - - group_irq = NULL; - - __raw_writel(1 << d->irq, REG_AIC_MECR); - - switch (d->irq) { - case IRQ_GROUP0: - group_irq = &group_nirq0; - break; - - case IRQ_GROUP1: - group_irq = &group_nirq1; - break; - - case IRQ_USBH: - group_irq = &group_usbh; - break; - - case IRQ_T_INT_GROUP: - group_irq = &group_ottimer; - break; - - case IRQ_GDMAGROUP: - group_irq = &group_gdma; - break; - - case IRQ_SCGROUP: - group_irq = &group_sc; - break; - - case IRQ_I2CGROUP: - group_irq = &group_i2c; - break; - - case IRQ_P2SGROUP: - group_irq = &group_ps2; - break; - } - - if (group_irq) - group_irq_enable(group_irq); -} - -static struct irq_chip nuc900_irq_chip = { - .irq_ack = nuc900_irq_ack, - .irq_mask = nuc900_irq_mask, - .irq_unmask = nuc900_irq_unmask, -}; - -void __init nuc900_init_irq(void) -{ - int irqno; - - __raw_writel(0xFFFFFFFE, REG_AIC_MDCR); - - for (irqno = IRQ_WDT; irqno <= IRQ_ADC; irqno++) { - irq_set_chip_and_handler(irqno, &nuc900_irq_chip, - handle_level_irq); - irq_clear_status_flags(irqno, IRQ_NOREQUEST); - } -} |