[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>
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 3198680..fcb0721 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -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 @@
#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 @@
__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);
}