arch/mn10300/unit-asb2303/unit-init.c

   1 /* ASB2303 initialisation
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/param.h>
  14 #include <linux/init.h>
  15 #include <linux/device.h>
  16
  17 #include <asm/io.h>
  18 #include <asm/setup.h>
  19 #include <asm/processor.h>
  20 #include <asm/irq.h>
  21 #include <asm/intctl-regs.h>
  22
  23 /*
  24  * initialise some of the unit hardware before gdbstub is set up
  25  */
  26 asmlinkage void __init unit_init(void)
  27 {
  28         /* set up the external interrupts */
  29         SET_XIRQ_TRIGGER(0, XIRQ_TRIGGER_HILEVEL);
  30         SET_XIRQ_TRIGGER(2, XIRQ_TRIGGER_LOWLEVEL);
  31         SET_XIRQ_TRIGGER(3, XIRQ_TRIGGER_HILEVEL);
  32         SET_XIRQ_TRIGGER(4, XIRQ_TRIGGER_LOWLEVEL);
  33         SET_XIRQ_TRIGGER(5, XIRQ_TRIGGER_LOWLEVEL);
  34 }
  35
  36 /*
  37  * initialise the rest of the unit hardware after gdbstub is ready
  38  */
  39 void __init unit_setup(void)
  40 {
  41 }
  42
  43 /*
  44  * initialise the external interrupts used by a unit of this type
  45  */
  46 void __init unit_init_IRQ(void)
  47 {
  48         unsigned int extnum;
  49
  50         for (extnum = 0; extnum < NR_XIRQS; extnum++) {
  51                 switch (GET_XIRQ_TRIGGER(extnum)) {
  52                 case XIRQ_TRIGGER_HILEVEL:
  53                 case XIRQ_TRIGGER_LOWLEVEL:
  54                         set_irq_handler(XIRQ2IRQ(extnum), handle_level_irq);
  55                         break;
  56                 default:
  57                         break;
  58                 }
  59         }
  60 }