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 */
clk_enable(struct clk * clk)26 int clk_enable(struct clk *clk)
27 {
28 return 0;
29 }
30
clk_disable(struct clk * clk)31 void clk_disable(struct clk *clk)
32 {
33 }
34
clk_get_rate(struct clk * clk)35 unsigned long clk_get_rate(struct clk *clk)
36 {
37 return AT91X40_MASTER_CLOCK;
38 }
39
clk_get(struct device * dev,const char * id)40 struct clk *clk_get(struct device *dev, const char *id)
41 {
42 return NULL;
43 }
44
at91x40_initialize(unsigned long main_clock)45 void __init at91x40_initialize(unsigned long main_clock)
46 {
47 at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)
48 | (1 << AT91X40_ID_IRQ2);
49 }
50
51 /*
52 * The default interrupt priority levels (0 = lowest, 7 = highest).
53 */
54 static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = {
55 7, /* Advanced Interrupt Controller (FIQ) */
56 0, /* System Peripherals */
57 0, /* USART 0 */
58 0, /* USART 1 */
59 2, /* Timer Counter 0 */
60 2, /* Timer Counter 1 */
61 2, /* Timer Counter 2 */
62 0, /* Watchdog timer */
63 0, /* Parallel IO Controller A */
64 0, /* Reserved */
65 0, /* Reserved */
66 0, /* Reserved */
67 0, /* Reserved */
68 0, /* Reserved */
69 0, /* Reserved */
70 0, /* Reserved */
71 0, /* External IRQ0 */
72 0, /* External IRQ1 */
73 0, /* External IRQ2 */
74 };
75
at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])76 void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])
77 {
78 if (!priority)
79 priority = at91x40_default_irq_priority;
80
81 at91_aic_init(priority);
82 }
83
84