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Viewing changes to arch/mips/txx9/rbtx4938/irq.c

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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arch/mips/txx9/rbtx4938/irq.c
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#include <asm/txx9/generic.h>
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#include <asm/txx9/rbtx4938.h>
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static void toshiba_rbtx4938_irq_ioc_enable(unsigned int irq);
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static void toshiba_rbtx4938_irq_ioc_disable(unsigned int irq);
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#define TOSHIBA_RBTX4938_IOC_NAME "RBTX4938-IOC"
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static struct irq_chip toshiba_rbtx4938_irq_ioc_type = {
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        .name = TOSHIBA_RBTX4938_IOC_NAME,
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        .ack = toshiba_rbtx4938_irq_ioc_disable,
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        .mask = toshiba_rbtx4938_irq_ioc_disable,
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        .mask_ack = toshiba_rbtx4938_irq_ioc_disable,
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        .unmask = toshiba_rbtx4938_irq_ioc_enable,
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};
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static int toshiba_rbtx4938_irq_nested(int sw_irq)
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{
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        u8 level3;
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        return RBTX4938_IRQ_IOC + __fls8(level3);
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}
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static void __init
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toshiba_rbtx4938_irq_ioc_init(void)
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{
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        int i;
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        for (i = RBTX4938_IRQ_IOC;
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             i < RBTX4938_IRQ_IOC + RBTX4938_NR_IRQ_IOC; i++)
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                set_irq_chip_and_handler(i, &toshiba_rbtx4938_irq_ioc_type,
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                                         handle_level_irq);
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        set_irq_chained_handler(RBTX4938_IRQ_IOCINT, handle_simple_irq);
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}
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static void
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toshiba_rbtx4938_irq_ioc_enable(unsigned int irq)
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{
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        unsigned char v;
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        v = readb(rbtx4938_imask_addr);
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        v |= (1 << (irq - RBTX4938_IRQ_IOC));
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        writeb(v, rbtx4938_imask_addr);
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        mmiowb();
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}
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static void
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toshiba_rbtx4938_irq_ioc_disable(unsigned int irq)
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{
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        unsigned char v;
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        v = readb(rbtx4938_imask_addr);
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        v &= ~(1 << (irq - RBTX4938_IRQ_IOC));
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        writeb(v, rbtx4938_imask_addr);
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        mmiowb();
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}
 
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static void toshiba_rbtx4938_irq_ioc_enable(struct irq_data *d)
 
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{
 
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        unsigned char v;
 
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        v = readb(rbtx4938_imask_addr);
 
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        v |= (1 << (d->irq - RBTX4938_IRQ_IOC));
 
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        writeb(v, rbtx4938_imask_addr);
 
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        mmiowb();
 
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}
 
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static void toshiba_rbtx4938_irq_ioc_disable(struct irq_data *d)
 
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{
 
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        unsigned char v;
 
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        v = readb(rbtx4938_imask_addr);
 
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        v &= ~(1 << (d->irq - RBTX4938_IRQ_IOC));
 
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        writeb(v, rbtx4938_imask_addr);
 
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        mmiowb();
 
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}
 
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#define TOSHIBA_RBTX4938_IOC_NAME "RBTX4938-IOC"
 
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static struct irq_chip toshiba_rbtx4938_irq_ioc_type = {
 
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        .name = TOSHIBA_RBTX4938_IOC_NAME,
 
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        .irq_mask = toshiba_rbtx4938_irq_ioc_disable,
 
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        .irq_unmask = toshiba_rbtx4938_irq_ioc_enable,
 
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};
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static int rbtx4938_irq_dispatch(int pending)
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{
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        return irq;
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}
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static void __init toshiba_rbtx4938_irq_ioc_init(void)
 
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{
 
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        int i;
 
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        for (i = RBTX4938_IRQ_IOC;
 
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             i < RBTX4938_IRQ_IOC + RBTX4938_NR_IRQ_IOC; i++)
 
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                irq_set_chip_and_handler(i, &toshiba_rbtx4938_irq_ioc_type,
 
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                                         handle_level_irq);
 
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        irq_set_chained_handler(RBTX4938_IRQ_IOCINT, handle_simple_irq);
 
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}
 
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void __init rbtx4938_irq_setup(void)
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{
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        txx9_irq_dispatch = rbtx4938_irq_dispatch;
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        tx4938_irq_init();
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        toshiba_rbtx4938_irq_ioc_init();
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        /* Onboard 10M Ether: High Active */
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        set_irq_type(RBTX4938_IRQ_ETHER, IRQF_TRIGGER_HIGH);
 
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        irq_set_irq_type(RBTX4938_IRQ_ETHER, IRQF_TRIGGER_HIGH);
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}