X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=arch%2Farm%2Fmach-pxa%2Firq.c;h=fbff557bb2254dd9e39e33fe91e9f04f9f9753f2;hp=36c6a68beca26e1fa895d6ebb2373bd4bdd0eed6;hb=91d0322bef047e2916b3e52741411bffc63929cb;hpb=655d2ce073f5927194dbc28d2bd3c062a4a3caac

diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 36c6a68beca2..fbff557bb225 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -1,7 +1,7 @@
 /*
  *  linux/arch/arm/mach-pxa/irq.c
  *
- *  Generic PXA IRQ handling, GPIO IRQ demultiplexing, etc.
+ *  Generic PXA IRQ handling
  *
  *  Author:	Nicolas Pitre
  *  Created:	Jun 15, 2001
@@ -24,305 +24,54 @@
 
 #include "generic.h"
 
+#define IRQ_BIT(n)	(((n) - PXA_IRQ(0)) & 0x1f)
+#define _ICMR(n)	(*((((n) - PXA_IRQ(0)) & ~0x1f) ? &ICMR2 : &ICMR))
+#define _ICLR(n)	(*((((n) - PXA_IRQ(0)) & ~0x1f) ? &ICLR2 : &ICLR))
 
 /*
  * This is for peripheral IRQs internal to the PXA chip.
  */
 
-static void pxa_mask_low_irq(unsigned int irq)
+static int pxa_internal_irq_nr;
+
+static void pxa_mask_irq(unsigned int irq)
 {
-	ICMR &= ~(1 << irq);
+	_ICMR(irq) &= ~(1 << IRQ_BIT(irq));
 }
 
-static void pxa_unmask_low_irq(unsigned int irq)
+static void pxa_unmask_irq(unsigned int irq)
 {
-	ICMR |= (1 << irq);
+	_ICMR(irq) |= 1 << IRQ_BIT(irq);
 }
 
-static struct irq_chip pxa_internal_chip_low = {
+static struct irq_chip pxa_internal_irq_chip = {
 	.name		= "SC",
-	.ack		= pxa_mask_low_irq,
-	.mask		= pxa_mask_low_irq,
-	.unmask		= pxa_unmask_low_irq,
+	.ack		= pxa_mask_irq,
+	.mask		= pxa_mask_irq,
+	.unmask		= pxa_unmask_irq,
 };
 
-void __init pxa_init_irq_low(void)
+void __init pxa_init_irq(int irq_nr, set_wake_t fn)
 {
 	int irq;
 
-	/* disable all IRQs */
-	ICMR = 0;
+	pxa_internal_irq_nr = irq_nr;
 
-	/* all IRQs are IRQ, not FIQ */
-	ICLR = 0;
+	for (irq = 0; irq < irq_nr; irq += 32) {
+		_ICMR(irq) = 0;	/* disable all IRQs */
+		_ICLR(irq) = 0;	/* all IRQs are IRQ, not FIQ */
+	}
 
 	/* only unmasked interrupts kick us out of idle */
 	ICCR = 1;
 
-	for (irq = PXA_IRQ(0); irq <= PXA_IRQ(31); irq++) {
-		set_irq_chip(irq, &pxa_internal_chip_low);
-		set_irq_handler(irq, handle_level_irq);
-		set_irq_flags(irq, IRQF_VALID);
-	}
-}
-
-#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
-
-/*
- * This is for the second set of internal IRQs as found on the PXA27x.
- */
-
-static void pxa_mask_high_irq(unsigned int irq)
-{
-	ICMR2 &= ~(1 << (irq - 32));
-}
-
-static void pxa_unmask_high_irq(unsigned int irq)
-{
-	ICMR2 |= (1 << (irq - 32));
-}
-
-static struct irq_chip pxa_internal_chip_high = {
-	.name		= "SC-hi",
-	.ack		= pxa_mask_high_irq,
-	.mask		= pxa_mask_high_irq,
-	.unmask		= pxa_unmask_high_irq,
-};
-
-void __init pxa_init_irq_high(void)
-{
-	int irq;
-
-	ICMR2 = 0;
-	ICLR2 = 0;
-
-	for (irq = PXA_IRQ(32); irq < PXA_IRQ(64); irq++) {
-		set_irq_chip(irq, &pxa_internal_chip_high);
+	for (irq = PXA_IRQ(0); irq < PXA_IRQ(irq_nr); irq++) {
+		set_irq_chip(irq, &pxa_internal_irq_chip);
 		set_irq_handler(irq, handle_level_irq);
 		set_irq_flags(irq, IRQF_VALID);
 	}
-}
-#endif
-
-/*
- * PXA GPIO edge detection for IRQs:
- * IRQs are generated on Falling-Edge, Rising-Edge, or both.
- * Use this instead of directly setting GRER/GFER.
- */
-
-static long GPIO_IRQ_rising_edge[4];
-static long GPIO_IRQ_falling_edge[4];
-static long GPIO_IRQ_mask[4];
-
-static int pxa_gpio_irq_type(unsigned int irq, unsigned int type)
-{
-	int gpio, idx;
-
-	gpio = IRQ_TO_GPIO(irq);
-	idx = gpio >> 5;
-
-	if (type == IRQT_PROBE) {
-	    /* Don't mess with enabled GPIOs using preconfigured edges or
-	       GPIOs set to alternate function or to output during probe */
-		if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx] | GPDR(gpio)) &
-		    GPIO_bit(gpio))
-			return 0;
-		if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2)))
-			return 0;
-		type = __IRQT_RISEDGE | __IRQT_FALEDGE;
-	}
-
-	/* printk(KERN_DEBUG "IRQ%d (GPIO%d): ", irq, gpio); */
-
-	pxa_gpio_mode(gpio | GPIO_IN);
-
-	if (type & __IRQT_RISEDGE) {
-		/* printk("rising "); */
-		__set_bit (gpio, GPIO_IRQ_rising_edge);
-	} else {
-		__clear_bit (gpio, GPIO_IRQ_rising_edge);
-	}
-
-	if (type & __IRQT_FALEDGE) {
-		/* printk("falling "); */
-		__set_bit (gpio, GPIO_IRQ_falling_edge);
-	} else {
-		__clear_bit (gpio, GPIO_IRQ_falling_edge);
-	}
-
-	/* printk("edges\n"); */
-
-	GRER(gpio) = GPIO_IRQ_rising_edge[idx] & GPIO_IRQ_mask[idx];
-	GFER(gpio) = GPIO_IRQ_falling_edge[idx] & GPIO_IRQ_mask[idx];
-	return 0;
-}
-
-/*
- * GPIO IRQs must be acknowledged.  This is for GPIO 0 and 1.
- */
-
-static void pxa_ack_low_gpio(unsigned int irq)
-{
-	GEDR0 = (1 << (irq - IRQ_GPIO0));
-}
-
-static struct irq_chip pxa_low_gpio_chip = {
-	.name		= "GPIO-l",
-	.ack		= pxa_ack_low_gpio,
-	.mask		= pxa_mask_low_irq,
-	.unmask		= pxa_unmask_low_irq,
-	.set_type	= pxa_gpio_irq_type,
-};
-
-/*
- * Demux handler for GPIO>=2 edge detect interrupts
- */
-
-static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
-{
-	unsigned int mask;
-	int loop;
-
-	do {
-		loop = 0;
-
-		mask = GEDR0 & GPIO_IRQ_mask[0] & ~3;
-		if (mask) {
-			GEDR0 = mask;
-			irq = IRQ_GPIO(2);
-			desc = irq_desc + irq;
-			mask >>= 2;
-			do {
-				if (mask & 1)
-					desc_handle_irq(irq, desc);
-				irq++;
-				desc++;
-				mask >>= 1;
-			} while (mask);
-			loop = 1;
-		}
-
-		mask = GEDR1 & GPIO_IRQ_mask[1];
-		if (mask) {
-			GEDR1 = mask;
-			irq = IRQ_GPIO(32);
-			desc = irq_desc + irq;
-			do {
-				if (mask & 1)
-					desc_handle_irq(irq, desc);
-				irq++;
-				desc++;
-				mask >>= 1;
-			} while (mask);
-			loop = 1;
-		}
-
-		mask = GEDR2 & GPIO_IRQ_mask[2];
-		if (mask) {
-			GEDR2 = mask;
-			irq = IRQ_GPIO(64);
-			desc = irq_desc + irq;
-			do {
-				if (mask & 1)
-					desc_handle_irq(irq, desc);
-				irq++;
-				desc++;
-				mask >>= 1;
-			} while (mask);
-			loop = 1;
-		}
-
-		mask = GEDR3 & GPIO_IRQ_mask[3];
-		if (mask) {
-			GEDR3 = mask;
-			irq = IRQ_GPIO(96);
-			desc = irq_desc + irq;
-			do {
-				if (mask & 1)
-					desc_handle_irq(irq, desc);
-				irq++;
-				desc++;
-				mask >>= 1;
-			} while (mask);
-			loop = 1;
-		}
-	} while (loop);
-}
-
-static void pxa_ack_muxed_gpio(unsigned int irq)
-{
-	int gpio = irq - IRQ_GPIO(2) + 2;
-	GEDR(gpio) = GPIO_bit(gpio);
-}
-
-static void pxa_mask_muxed_gpio(unsigned int irq)
-{
-	int gpio = irq - IRQ_GPIO(2) + 2;
-	__clear_bit(gpio, GPIO_IRQ_mask);
-	GRER(gpio) &= ~GPIO_bit(gpio);
-	GFER(gpio) &= ~GPIO_bit(gpio);
-}
-
-static void pxa_unmask_muxed_gpio(unsigned int irq)
-{
-	int gpio = irq - IRQ_GPIO(2) + 2;
-	int idx = gpio >> 5;
-	__set_bit(gpio, GPIO_IRQ_mask);
-	GRER(gpio) = GPIO_IRQ_rising_edge[idx] & GPIO_IRQ_mask[idx];
-	GFER(gpio) = GPIO_IRQ_falling_edge[idx] & GPIO_IRQ_mask[idx];
-}
-
-static struct irq_chip pxa_muxed_gpio_chip = {
-	.name		= "GPIO",
-	.ack		= pxa_ack_muxed_gpio,
-	.mask		= pxa_mask_muxed_gpio,
-	.unmask		= pxa_unmask_muxed_gpio,
-	.set_type	= pxa_gpio_irq_type,
-};
-
-void __init pxa_init_irq_gpio(int gpio_nr)
-{
-	int irq, i;
-
-	pxa_last_gpio = gpio_nr - 1;
-
-	/* clear all GPIO edge detects */
-	for (i = 0; i < gpio_nr; i += 32) {
-		GFER(i) = 0;
-		GRER(i) = 0;
-		GEDR(i) = GEDR(i);
-	}
-
-	/* GPIO 0 and 1 must have their mask bit always set */
-	GPIO_IRQ_mask[0] = 3;
-
-	for (irq = IRQ_GPIO0; irq <= IRQ_GPIO1; irq++) {
-		set_irq_chip(irq, &pxa_low_gpio_chip);
-		set_irq_handler(irq, handle_edge_irq);
-		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-	}
 
-	for (irq = IRQ_GPIO(2); irq < IRQ_GPIO(gpio_nr); irq++) {
-		set_irq_chip(irq, &pxa_muxed_gpio_chip);
-		set_irq_handler(irq, handle_edge_irq);
-		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-	}
-
-	/* Install handler for GPIO>=2 edge detect interrupts */
-	set_irq_chip(IRQ_GPIO_2_x, &pxa_internal_chip_low);
-	set_irq_chained_handler(IRQ_GPIO_2_x, pxa_gpio_demux_handler);
-
-	pxa_init_gpio(gpio_nr);
-}
-
-void __init pxa_init_irq_set_wake(int (*set_wake)(unsigned int, unsigned int))
-{
-	pxa_internal_chip_low.set_wake = set_wake;
-#ifdef CONFIG_PXA27x
-	pxa_internal_chip_high.set_wake = set_wake;
-#endif
-	pxa_low_gpio_chip.set_wake = set_wake;
-	pxa_muxed_gpio_chip.set_wake = set_wake;
+	pxa_internal_irq_chip.set_wake = fn;
 }
 
 #ifdef CONFIG_PM
@@ -330,19 +79,11 @@ static unsigned long saved_icmr[2];
 
 static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
 {
-	switch (dev->id) {
-	case 0:
-		saved_icmr[0] = ICMR;
-		ICMR = 0;
-		break;
-#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
-	case 1:
-		saved_icmr[1] = ICMR2;
-		ICMR2 = 0;
-		break;
-#endif
-	default:
-		return -EINVAL;
+	int i, irq = PXA_IRQ(0);
+
+	for (i = 0; irq < PXA_IRQ(pxa_internal_irq_nr); i++, irq += 32) {
+		saved_icmr[i] = _ICMR(irq);
+		_ICMR(irq) = 0;
 	}
 
 	return 0;
@@ -350,22 +91,14 @@ static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
 
 static int pxa_irq_resume(struct sys_device *dev)
 {
-	switch (dev->id) {
-	case 0:
-		ICMR = saved_icmr[0];
-		ICLR = 0;
-		ICCR = 1;
-		break;
-#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
-	case 1:
-		ICMR2 = saved_icmr[1];
-		ICLR2 = 0;
-		break;
-#endif
-	default:
-		return -EINVAL;
+	int i, irq = PXA_IRQ(0);
+
+	for (i = 0; irq < PXA_IRQ(pxa_internal_irq_nr); i++, irq += 32) {
+		_ICMR(irq) = saved_icmr[i];
+		_ICLR(irq) = 0;
 	}
 
+	ICCR = 1;
 	return 0;
 }
 #else