arch/sh/boards/shmin/setup.c

   1 /*
   2  * arch/sh/boards/shmin/setup.c
   3  *
   4  * Copyright (C) 2006 Takashi YOSHII
   5  *
   6  * SHMIN Support.
   7  */
   8 #include <linux/init.h>
   9 #include <asm/machvec.h>
  10 #include <asm/shmin.h>
  11 #include <asm/clock.h>
  12 #include <asm/irq.h>
  13 #include <asm/io.h>
  14
  15 #define PFC_PHCR        0xa400010eUL
  16 #define INTC_ICR1       0xa4000010UL
  17 #define INTC_IPRC       0xa4000016UL
  18
  19 static struct ipr_data shmin_ipr_map[] = {
  20         { .irq=32, .addr=INTC_IPRC, .shift= 0, .priority=0 },
  21         { .irq=33, .addr=INTC_IPRC, .shift= 4, .priority=0 },
  22         { .irq=34, .addr=INTC_IPRC, .shift= 8, .priority=8 },
  23         { .irq=35, .addr=INTC_IPRC, .shift=12, .priority=0 },
  24 };
  25
  26 static void __init init_shmin_irq(void)
  27 {
  28         ctrl_outw(0x2a00, PFC_PHCR);    // IRQ0-3=IRQ
  29         ctrl_outw(0x0aaa, INTC_ICR1);   // IRQ0-3=IRQ-mode,Low-active.
  30         make_ipr_irq(shmin_ipr_map, ARRAY_SIZE(shmin_ipr_map));
  31 }
  32
  33 static void __iomem *shmin_ioport_map(unsigned long port, unsigned int size)
  34 {
  35         static int dummy;
  36
  37         if ((port & ~0x1f) == SHMIN_NE_BASE)
  38                 return (void __iomem *)(SHMIN_IO_BASE + port);
  39
  40         dummy = 0;
  41
  42         return &dummy;
  43
  44 }
  45
  46 struct sh_machine_vector mv_shmin __initmv = {
  47         .mv_name        = "SHMIN",
  48         .mv_init_irq    = init_shmin_irq,
  49         .mv_ioport_map  = shmin_ioport_map,
  50 };
  51 ALIAS_MV(shmin)