94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
/*
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* arch/arm/mach-at91/at91x40.c
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*
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* (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
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* Copyright (C) 2005 SAN People
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/io.h>
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#include <asm/proc-fns.h>
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#include <asm/system_misc.h>
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#include <asm/mach/arch.h>
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#include <mach/at91x40.h>
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#include <mach/at91_st.h>
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#include <mach/hardware.h>
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#include "at91_aic.h"
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#include "generic.h"
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/*
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* Export the clock functions for the AT91X40. Some external code common
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* to all AT91 family parts relys on this, like the gpio and serial support.
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*/
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int clk_enable(struct clk *clk)
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{
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return 0;
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}
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void clk_disable(struct clk *clk)
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{
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}
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unsigned long clk_get_rate(struct clk *clk)
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{
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return AT91X40_MASTER_CLOCK;
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}
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static void at91x40_idle(void)
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{
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/*
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* Disable the processor clock. The processor will be automatically
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* re-enabled by an interrupt or by a reset.
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*/
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__raw_writel(AT91_PS_CR_CPU, AT91_IO_P2V(AT91_PS_CR));
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cpu_do_idle();
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}
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void __init at91x40_initialize(unsigned long main_clock)
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{
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arm_pm_idle = at91x40_idle;
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}
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/*
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* The default interrupt priority levels (0 = lowest, 7 = highest).
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*/
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static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = {
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7, /* Advanced Interrupt Controller (FIQ) */
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0, /* System Peripherals */
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0, /* USART 0 */
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0, /* USART 1 */
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2, /* Timer Counter 0 */
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2, /* Timer Counter 1 */
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2, /* Timer Counter 2 */
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0, /* Watchdog timer */
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0, /* Parallel IO Controller A */
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0, /* Reserved */
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0, /* Reserved */
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0, /* Reserved */
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0, /* Reserved */
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0, /* Reserved */
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0, /* Reserved */
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0, /* Reserved */
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0, /* External IRQ0 */
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0, /* External IRQ1 */
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0, /* External IRQ2 */
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};
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void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS])
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{
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u32 extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)
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| (1 << AT91X40_ID_IRQ2);
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if (!priority)
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priority = at91x40_default_irq_priority;
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at91_aic_init(priority, extern_irq);
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}
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