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 <mach/at91x40.h>
  18 #include <mach/at91_st.h>
  19 #include <mach/timex.h>
  20 #include "generic.h"
  21
  22 /*
  23  * Export the clock functions for the AT91X40. Some external code common
  24  * to all AT91 family parts relys on this, like the gpio and serial support.
  25  */
  26 int clk_enable(struct clk *clk)
  27 {
  28         return 0;
  29 }
  30
  31 void clk_disable(struct clk *clk)
  32 {
  33 }
  34
  35 unsigned long clk_get_rate(struct clk *clk)
  36 {
  37         return AT91X40_MASTER_CLOCK;
  38 }
  39
  40 void __init at91x40_initialize(unsigned long main_clock)
  41 {
  42         at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)
  43                         | (1 << AT91X40_ID_IRQ2);
  44 }
  45
  46 /*
  47  * The default interrupt priority levels (0 = lowest, 7 = highest).
  48  */
  49 static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = {
  50         7,      /* Advanced Interrupt Controller (FIQ) */
  51         0,      /* System Peripherals */
  52         0,      /* USART 0 */
  53         0,      /* USART 1 */
  54         2,      /* Timer Counter 0 */
  55         2,      /* Timer Counter 1 */
  56         2,      /* Timer Counter 2 */
  57         0,      /* Watchdog timer */
  58         0,      /* Parallel IO Controller A */
  59         0,      /* Reserved */
  60         0,      /* Reserved */
  61         0,      /* Reserved */
  62         0,      /* Reserved */
  63         0,      /* Reserved */
  64         0,      /* Reserved */
  65         0,      /* Reserved */
  66         0,      /* External IRQ0 */
  67         0,      /* External IRQ1 */
  68         0,      /* External IRQ2 */
  69 };
  70
  71 void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])
  72 {
  73         if (!priority)
  74                 priority = at91x40_default_irq_priority;
  75
  76         at91_aic_init(priority);
  77 }
  78