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_platform.h>
  15
  16 #include <asm/mach/arch.h>
  17 #include <asm/hardware/vic.h>
  18
  19 #include <mach/map.h>
  20 #include <mach/picoxcell_soc.h>
  21
  22 #include "common.h"
  23
  24 static void __init picoxcell_init_machine(void)
  25 {
  26         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  27 }
  28
  29 static const char *picoxcell_dt_match[] = {
  30         "picochip,pc3x2",
  31         "picochip,pc3x3",
  32         NULL
  33 };
  34
  35 static const struct of_device_id vic_of_match[] __initconst = {
  36         { .compatible = "arm,pl192-vic" },
  37         { /* Sentinel */ }
  38 };
  39
  40 static void __init picoxcell_init_irq(void)
  41 {
  42         vic_init(IO_ADDRESS(PICOXCELL_VIC0_BASE), 0, ~0, 0);
  43         vic_init(IO_ADDRESS(PICOXCELL_VIC1_BASE), 32, ~0, 0);
  44         irq_domain_generate_simple(vic_of_match, PICOXCELL_VIC0_BASE, 0);
  45         irq_domain_generate_simple(vic_of_match, PICOXCELL_VIC1_BASE, 32);
  46 }
  47
  48 DT_MACHINE_START(PICOXCELL, "Picochip picoXcell")
  49         .map_io         = picoxcell_map_io,
  50         .nr_irqs        = ARCH_NR_IRQS,
  51         .init_irq       = picoxcell_init_irq,
  52         .timer          = &picoxcell_timer,
  53         .init_machine   = picoxcell_init_machine,
  54         .dt_compat      = picoxcell_dt_match,
  55 MACHINE_END