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
at91x40_initialize(unsigned long main_clock)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
at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])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
79