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[ARM] pxa: add EXT_WAKEUP interrupts handling for pxa3xx 

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
hifive-unleashed-5.1
Mike Rapoport 2009-11-11 11:36:59 +02:00 committed by Eric Miao
parent 15cc7112ab
commit bf293aec15
1 changed files with 42 additions and 0 deletions
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42
arch/arm/mach-pxa/pxa3xx.c
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@ -30,6 +30,7 @@
#include <mach/pm.h>
#include <mach/dma.h>
#include <mach/ssp.h>
#include <mach/regs-intc.h>
#include <plat/i2c.h>
#include "generic.h"
@ -45,6 +46,9 @@
#define ACCR_D0CS (1 << 26)
#define ACCR_PCCE (1 << 11)
#define PECR_IE(n) ((1 << ((n) * 2)) << 28)
#define PECR_IS(n) ((1 << ((n) * 2)) << 29)
/* crystal frequency to static memory controller multiplier (SMCFS) */
static unsigned char smcfs_mult[8] = { 6, 0, 8, 0, 0, 16, };
@ -532,6 +536,43 @@ static inline void pxa3xx_init_pm(void) {}
#define pxa3xx_set_wake NULL
#endif
static void pxa_ack_ext_wakeup(unsigned int irq)
{
PECR |= PECR_IS(irq - IRQ_WAKEUP0);
}
static void pxa_mask_ext_wakeup(unsigned int irq)
{
ICMR2 &= ~(1 << ((irq - PXA_IRQ(0)) & 0x1f));
PECR &= ~PECR_IE(irq - IRQ_WAKEUP0);
}
static void pxa_unmask_ext_wakeup(unsigned int irq)
{
ICMR2 |= 1 << ((irq - PXA_IRQ(0)) & 0x1f);
PECR |= PECR_IE(irq - IRQ_WAKEUP0);
}
static struct irq_chip pxa_ext_wakeup_chip = {
.name = "WAKEUP",
.ack = pxa_ack_ext_wakeup,
.mask = pxa_mask_ext_wakeup,
.unmask = pxa_unmask_ext_wakeup,
};
static void __init pxa_init_ext_wakeup_irq(set_wake_t fn)
{
int irq;
for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) {
set_irq_chip(irq, &pxa_ext_wakeup_chip);
set_irq_handler(irq, handle_edge_irq);
set_irq_flags(irq, IRQF_VALID);
}
pxa_ext_wakeup_chip.set_wake = fn;
}
void __init pxa3xx_init_irq(void)
{
/* enable CP6 access */
@ -541,6 +582,7 @@ void __init pxa3xx_init_irq(void)
__asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value));
pxa_init_irq(56, pxa3xx_set_wake);
pxa_init_ext_wakeup_irq(pxa3xx_set_wake);
pxa_init_gpio(IRQ_GPIO_2_x, 2, 127, NULL);
}