diff options
Diffstat (limited to 'arch/sh/cchips/voyagergx/irq.c')
| -rw-r--r-- | arch/sh/cchips/voyagergx/irq.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/arch/sh/cchips/voyagergx/irq.c b/arch/sh/cchips/voyagergx/irq.c deleted file mode 100644 index 70f12907647..00000000000 --- a/arch/sh/cchips/voyagergx/irq.c +++ /dev/null @@ -1,170 +0,0 @@ -/* -------------------------------------------------------------------- */ -/* setup_voyagergx.c: */ -/* -------------------------------------------------------------------- */ -/* 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. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Copyright 2003 (c) Lineo uSolutions,Inc. -*/ -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/io.h> -#include <asm/voyagergx.h> -#include <asm/rts7751r2d.h> - -static void disable_voyagergx_irq(unsigned int irq) -{ - unsigned long val; - unsigned long mask = 1 << (irq - VOYAGER_IRQ_BASE); - - pr_debug("disable_voyagergx_irq(%d): mask=%x\n", irq, mask); - val = readl((void __iomem *)VOYAGER_INT_MASK); - val &= ~mask; - writel(val, (void __iomem *)VOYAGER_INT_MASK); -} - -static void enable_voyagergx_irq(unsigned int irq) -{ - unsigned long val; - unsigned long mask = 1 << (irq - VOYAGER_IRQ_BASE); - - pr_debug("disable_voyagergx_irq(%d): mask=%x\n", irq, mask); - val = readl((void __iomem *)VOYAGER_INT_MASK); - val |= mask; - writel(val, (void __iomem *)VOYAGER_INT_MASK); -} - -static void mask_and_ack_voyagergx(unsigned int irq) -{ - disable_voyagergx_irq(irq); -} - -static void end_voyagergx_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - enable_voyagergx_irq(irq); -} - -static unsigned int startup_voyagergx_irq(unsigned int irq) -{ - enable_voyagergx_irq(irq); - return 0; -} - -static void shutdown_voyagergx_irq(unsigned int irq) -{ - disable_voyagergx_irq(irq); -} - -static struct hw_interrupt_type voyagergx_irq_type = { - .typename = "VOYAGERGX-IRQ", - .startup = startup_voyagergx_irq, - .shutdown = shutdown_voyagergx_irq, - .enable = enable_voyagergx_irq, - .disable = disable_voyagergx_irq, - .ack = mask_and_ack_voyagergx, - .end = end_voyagergx_irq, -}; - -static irqreturn_t voyagergx_interrupt(int irq, void *dev_id) -{ - printk(KERN_INFO - "VoyagerGX: spurious interrupt, status: 0x%x\n", - (unsigned int)readl((void __iomem *)INT_STATUS)); - return IRQ_HANDLED; -} - -static struct { - int (*func)(int, void *); - void *dev; -} voyagergx_demux[VOYAGER_IRQ_NUM]; - -void voyagergx_register_irq_demux(int irq, - int (*demux)(int irq, void *dev), void *dev) -{ - voyagergx_demux[irq - VOYAGER_IRQ_BASE].func = demux; - voyagergx_demux[irq - VOYAGER_IRQ_BASE].dev = dev; -} - -void voyagergx_unregister_irq_demux(int irq) -{ - voyagergx_demux[irq - VOYAGER_IRQ_BASE].func = 0; -} - -int voyagergx_irq_demux(int irq) -{ - - if (irq == IRQ_VOYAGER ) { - unsigned long i = 0, bit __attribute__ ((unused)); - unsigned long val = readl((void __iomem *)INT_STATUS); - - if (val & (1 << 1)) - i = 1; - else if (val & (1 << 2)) - i = 2; - else if (val & (1 << 6)) - i = 6; - else if (val & (1 << 10)) - i = 10; - else if (val & (1 << 11)) - i = 11; - else if (val & (1 << 12)) - i = 12; - else if (val & (1 << 17)) - i = 17; - else - printk("Unexpected IRQ irq = %d status = 0x%08lx\n", irq, val); - pr_debug("voyagergx_irq_demux %d \n", i); - if (i < VOYAGER_IRQ_NUM) { - irq = VOYAGER_IRQ_BASE + i; - if (voyagergx_demux[i].func != 0) - irq = voyagergx_demux[i].func(irq, voyagergx_demux[i].dev); - } - } - return irq; -} - -static struct irqaction irq0 = { - .name = "voyagergx", - .handler = voyagergx_interrupt, - .flags = IRQF_DISABLED, - .mask = CPU_MASK_NONE, -}; - -void __init setup_voyagergx_irq(void) -{ - int i, flag; - - printk(KERN_INFO "VoyagerGX configured at 0x%x on irq %d(mapped into %d to %d)\n", - VOYAGER_BASE, - IRQ_VOYAGER, - VOYAGER_IRQ_BASE, - VOYAGER_IRQ_BASE + VOYAGER_IRQ_NUM - 1); - - for (i=0; i<VOYAGER_IRQ_NUM; i++) { - flag = 0; - switch (VOYAGER_IRQ_BASE + i) { - case VOYAGER_USBH_IRQ: - case VOYAGER_8051_IRQ: - case VOYAGER_UART0_IRQ: - case VOYAGER_UART1_IRQ: - case VOYAGER_AC97_IRQ: - flag = 1; - } - if (flag == 1) - irq_desc[VOYAGER_IRQ_BASE + i].chip = &voyagergx_irq_type; - } - - setup_irq(IRQ_VOYAGER, &irq0); -} |