release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/platforms/83xx/asp834x.c

   1 /*
   2  * arch/powerpc/platforms/83xx/asp834x.c
   3  *
   4  * Analogue & Micro ASP8347 board specific routines
   5  * clone of mpc834x_itx
   6  *
   7  * Copyright 2008 Codehermit
   8  *
   9  * Maintainer: Bryan O'Donoghue <bodonoghue@codhermit.ie>
  10  *
  11  * This program is free software; you can redistribute  it and/or modify it
  12  * under  the terms of  the GNU General  Public License as published by the
  13  * Free Software Foundation;  either version 2 of the  License, or (at your
  14  * option) any later version.
  15  */
  16
  17 #include <linux/pci.h>
  18 #include <linux/of_platform.h>
  19
  20 #include <asm/time.h>
  21 #include <asm/ipic.h>
  22 #include <asm/udbg.h>
  23
  24 #include "mpc83xx.h"
  25
  26 /* ************************************************************************
  27  *
  28  * Setup the architecture
  29  *
  30  */
  31 static void __init asp834x_setup_arch(void)
  32 {
  33         if (ppc_md.progress)
  34                 ppc_md.progress("asp834x_setup_arch()", 0);
  35
  36         mpc834x_usb_cfg();
  37 }
  38
  39 static void __init asp834x_init_IRQ(void)
  40 {
  41         struct device_node *np;
  42
  43         np = of_find_node_by_type(NULL, "ipic");
  44         if (!np)
  45                 return;
  46
  47         ipic_init(np, 0);
  48
  49         of_node_put(np);
  50
  51         /* Initialize the default interrupt mapping priorities,
  52          * in case the boot rom changed something on us.
  53          */
  54         ipic_set_default_priority();
  55 }
  56
  57 static struct __initdata of_device_id asp8347_ids[] = {
  58         { .type = "soc", },
  59         { .compatible = "soc", },
  60         { .compatible = "simple-bus", },
  61         { .compatible = "gianfar", },
  62         {},
  63 };
  64
  65 static int __init asp8347_declare_of_platform_devices(void)
  66 {
  67         of_platform_bus_probe(NULL, asp8347_ids, NULL);
  68         return 0;
  69 }
  70 machine_device_initcall(asp834x, asp8347_declare_of_platform_devices);
  71
  72 /*
  73  * Called very early, MMU is off, device-tree isn't unflattened
  74  */
  75 static int __init asp834x_probe(void)
  76 {
  77         unsigned long root = of_get_flat_dt_root();
  78         return of_flat_dt_is_compatible(root, "analogue-and-micro,asp8347e");
  79 }
  80
  81 define_machine(asp834x) {
  82         .name                   = "ASP8347E",
  83         .probe                  = asp834x_probe,
  84         .setup_arch             = asp834x_setup_arch,
  85         .init_IRQ               = asp834x_init_IRQ,
  86         .get_irq                = ipic_get_irq,
  87         .restart                = mpc83xx_restart,
  88         .time_init              = mpc83xx_time_init,
  89         .calibrate_decr         = generic_calibrate_decr,
  90         .progress               = udbg_progress,
  91 };