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linux/arch/arm/mach-at91/at91x40.c
Jean-Christophe PLAGNIOL-VILLARD 546c830c90 ARM: at91: fix at91_extern_irq usage for non-dt boards
Since 4b68520dc0ec96153bc0d87bca5ffba508edfcf
ARM: at91: add AIC5 support

we allocate the at91_extern_irq.

This patch makes it static and stores the non-dt extern irq in the soc
structure. It is then possible to use a at91_get_extern_irq() function
to get the value for outside of the irq driver. It is useful for passing
its value to at91_aic_init().

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
[nicolas.ferre@atmel.com: rework commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-21 16:35:26 +02:00

94 lines
2.2 KiB
C

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