arch/arm/mach-picoxcell/common.c

   1 /*
   2  * Copyright (c) 2011 Picochip Ltd., Jamie Iles
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * All enquiries to support@picochip.com
   9  */
  10 #include <linux/irq.h>
  11 #include <linux/irqdomain.h>
  12 #include <linux/of.h>
  13 #include <linux/of_address.h>
  14 #include <linux/of_irq.h>
  15 #include <linux/of_platform.h>
  16
  17 #include <asm/mach/arch.h>
  18 #include <asm/hardware/vic.h>
  19 #include <asm/mach/map.h>
  20
  21 #include <mach/map.h>
  22 #include <mach/picoxcell_soc.h>
  23
  24 #include "common.h"
  25
  26 static struct map_desc io_map __initdata = {
  27         .virtual        = PHYS_TO_IO(PICOXCELL_PERIPH_BASE),
  28         .pfn            = __phys_to_pfn(PICOXCELL_PERIPH_BASE),
  29         .length         = PICOXCELL_PERIPH_LENGTH,
  30         .type           = MT_DEVICE,
  31 };
  32
  33 static void __init picoxcell_map_io(void)
  34 {
  35         iotable_init(&io_map, 1);
  36 }
  37
  38 static void __init picoxcell_init_machine(void)
  39 {
  40         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  41 }
  42
  43 static const char *picoxcell_dt_match[] = {
  44         "picochip,pc3x2",
  45         "picochip,pc3x3",
  46         NULL
  47 };
  48
  49 static const struct of_device_id vic_of_match[] __initconst = {
  50         { .compatible = "arm,pl192-vic", .data = vic_of_init, },
  51         { /* Sentinel */ }
  52 };
  53
  54 static void __init picoxcell_init_irq(void)
  55 {
  56         of_irq_init(vic_of_match);
  57 }
  58
  59 DT_MACHINE_START(PICOXCELL, "Picochip picoXcell")
  60         .map_io         = picoxcell_map_io,
  61         .nr_irqs        = NR_IRQS_LEGACY,
  62         .init_irq       = picoxcell_init_irq,
  63         .handle_irq     = vic_handle_irq,
  64         .timer          = &picoxcell_timer,
  65         .init_machine   = picoxcell_init_machine,
  66         .dt_compat      = picoxcell_dt_match,
  67 MACHINE_END