forked from Minki/linux
546c830c90
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>
94 lines
2.2 KiB
C
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);
|
|
}
|