[ARM] pxa: add EXT_WAKEUP interrupts handling for pxa3xx (bf293aec) · Commits · e / devices / android_kernel_xiaomi_markw

arch/arm/mach-pxa/pxa3xx.c

+42 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}