arch/arm/mach-at91/at91x40.c

   1 /*
   2  * arch/arm/mach-at91/at91x40.c
   3  *
   4  * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
   5  * Copyright (C) 2005 SAN People
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/irq.h>
  16 #include <asm/mach/arch.h>
  17 #include <asm/arch/at91x40.h>
  18 #include <asm/arch/at91_st.h>
  19 #include "generic.h"
  20
  21 /*
  22  * This is used in the gpio code, stub locally.
  23  */
  24 int clk_enable(struct clk *clk)
  25 {
  26         return 0;
  27 }
  28
  29 void __init at91x40_initialize(unsigned long main_clock)
  30 {
  31         at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)
  32                         | (1 << AT91X40_ID_IRQ2);
  33 }
  34
  35 /*
  36  * The default interrupt priority levels (0 = lowest, 7 = highest).
  37  */
  38 static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = {
  39         7,      /* Advanced Interrupt Controller (FIQ) */
  40         0,      /* System Peripherals */
  41         0,      /* USART 0 */
  42         0,      /* USART 1 */
  43         2,      /* Timer Counter 0 */
  44         2,      /* Timer Counter 1 */
  45         2,      /* Timer Counter 2 */
  46         0,      /* Watchdog timer */
  47         0,      /* Parallel IO Controller A */
  48         0,      /* Reserved */
  49         0,      /* Reserved */
  50         0,      /* Reserved */
  51         0,      /* Reserved */
  52         0,      /* Reserved */
  53         0,      /* Reserved */
  54         0,      /* Reserved */
  55         0,      /* External IRQ0 */
  56         0,      /* External IRQ1 */
  57         0,      /* External IRQ2 */
  58 };
  59
  60 void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])
  61 {
  62         if (!priority)
  63                 priority = at91x40_default_irq_priority;
  64
  65         at91_aic_init(priority);
  66 }
  67