diff options
Diffstat (limited to 'arch/frv/kernel/irq-mb93493.c')
| -rw-r--r-- | arch/frv/kernel/irq-mb93493.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/arch/frv/kernel/irq-mb93493.c b/arch/frv/kernel/irq-mb93493.c deleted file mode 100644 index 8ca5aa4ff595..000000000000 --- a/arch/frv/kernel/irq-mb93493.c +++ /dev/null @@ -1,147 +0,0 @@ -/* irq-mb93493.c: MB93493 companion chip interrupt handler - * - * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/ptrace.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/bitops.h> - -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/irc-regs.h> -#include <asm/mb93493-irqs.h> -#include <asm/mb93493-regs.h> - -#define IRQ_ROUTE_ONE(X) (X##_ROUTE << (X - IRQ_BASE_MB93493)) - -#define IRQ_ROUTING \ - (IRQ_ROUTE_ONE(IRQ_MB93493_VDC) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_VCC) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_OUT) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_I2C_0) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_I2C_1) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_USB) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_LOCAL_BUS) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_PCMCIA) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_GPIO) | \ - IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_IN)) - -/* - * daughter board PIC operations - * - there is no way to ACK interrupts in the MB93493 chip - */ -static void frv_mb93493_mask(struct irq_data *d) -{ - uint32_t iqsr; - volatile void *piqsr; - - if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493))) - piqsr = __addr_MB93493_IQSR(1); - else - piqsr = __addr_MB93493_IQSR(0); - - iqsr = readl(piqsr); - iqsr &= ~(1 << (d->irq - IRQ_BASE_MB93493 + 16)); - writel(iqsr, piqsr); -} - -static void frv_mb93493_ack(struct irq_data *d) -{ -} - -static void frv_mb93493_unmask(struct irq_data *d) -{ - uint32_t iqsr; - volatile void *piqsr; - - if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493))) - piqsr = __addr_MB93493_IQSR(1); - else - piqsr = __addr_MB93493_IQSR(0); - - iqsr = readl(piqsr); - iqsr |= 1 << (d->irq - IRQ_BASE_MB93493 + 16); - writel(iqsr, piqsr); -} - -static struct irq_chip frv_mb93493_pic = { - .name = "mb93093", - .irq_ack = frv_mb93493_ack, - .irq_mask = frv_mb93493_mask, - .irq_mask_ack = frv_mb93493_mask, - .irq_unmask = frv_mb93493_unmask, -}; - -/* - * MB93493 PIC interrupt handler - */ -static irqreturn_t mb93493_interrupt(int irq, void *_piqsr) -{ - volatile void *piqsr = _piqsr; - uint32_t iqsr; - - iqsr = readl(piqsr); - iqsr = iqsr & (iqsr >> 16) & 0xffff; - - /* poll all the triggered IRQs */ - while (iqsr) { - int irq; - - asm("scan %1,gr0,%0" : "=r"(irq) : "r"(iqsr)); - irq = 31 - irq; - iqsr &= ~(1 << irq); - - generic_handle_irq(IRQ_BASE_MB93493 + irq); - } - - return IRQ_HANDLED; -} - -/* - * define an interrupt action for each MB93493 PIC output - * - use dev_id to indicate the MB93493 PIC input to output mappings - */ -static struct irqaction mb93493_irq[2] = { - [0] = { - .handler = mb93493_interrupt, - .flags = IRQF_SHARED, - .name = "mb93493.0", - .dev_id = (void *) __addr_MB93493_IQSR(0), - }, - [1] = { - .handler = mb93493_interrupt, - .flags = IRQF_SHARED, - .name = "mb93493.1", - .dev_id = (void *) __addr_MB93493_IQSR(1), - } -}; - -/* - * initialise the motherboard MB93493's PIC - */ -void __init mb93493_init(void) -{ - int irq; - - for (irq = IRQ_BASE_MB93493 + 0; irq <= IRQ_BASE_MB93493 + 10; irq++) - irq_set_chip_and_handler(irq, &frv_mb93493_pic, - handle_edge_irq); - - /* the MB93493 drives external IRQ inputs on the CPU PIC */ - setup_irq(IRQ_CPU_MB93493_0, &mb93493_irq[0]); - setup_irq(IRQ_CPU_MB93493_1, &mb93493_irq[1]); -} |