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 <linux/irq.h>
  10 #include <asm/machvec.h>
  11 #include <asm/shmin.h>
  12 #include <asm/clock.h>
  13 #include <asm/io.h>
  14
  15 #define PFC_PHCR        0xa400010eUL
  16 #define INTC_ICR1       0xa4000010UL
  17
  18 static void __init init_shmin_irq(void)
  19 {
  20         ctrl_outw(0x2a00, PFC_PHCR);    // IRQ0-3=IRQ
  21         ctrl_outw(0x0aaa, INTC_ICR1);   // IRQ0-3=IRQ-mode,Low-active.
  22         plat_irq_setup_pins(IRQ_MODE_IRQ);
  23 }
  24
  25 static void __iomem *shmin_ioport_map(unsigned long port, unsigned int size)
  26 {
  27         static int dummy;
  28
  29         if ((port & ~0x1f) == SHMIN_NE_BASE)
  30                 return (void __iomem *)(SHMIN_IO_BASE + port);
  31
  32         dummy = 0;
  33
  34         return &dummy;
  35
  36 }
  37
  38 static struct sh_machine_vector mv_shmin __initmv = {
  39         .mv_name        = "SHMIN",
  40         .mv_init_irq    = init_shmin_irq,
  41         .mv_ioport_map  = shmin_ioport_map,
  42 };