Merge branch 'samsung-irq' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc-2.6 into devel-stable

6 files changed, 68 insertions, 215 deletions

diff --git a/arch/arm/mach-s3c64xx/irq.c b/arch/arm/mach-s3c64xx/irq.c
index 67a145d..97660c8 100644
--- a/arch/arm/mach-s3c64xx/irq.c
+++ b/arch/arm/mach-s3c64xx/irq.c
@@ -58,12 +58,7 @@ void __init s3c64xx_init_irq(u32 vic0_valid, u32 vic1_valid)
 	vic_init(VA_VIC1, IRQ_VIC1_BASE, vic1_valid, 0);
 
 	/* add the timer sub-irqs */
-
-	s3c_init_vic_timer_irq(IRQ_TIMER0_VIC, IRQ_TIMER0);
-	s3c_init_vic_timer_irq(IRQ_TIMER1_VIC, IRQ_TIMER1);
-	s3c_init_vic_timer_irq(IRQ_TIMER2_VIC, IRQ_TIMER2);
-	s3c_init_vic_timer_irq(IRQ_TIMER3_VIC, IRQ_TIMER3);
-	s3c_init_vic_timer_irq(IRQ_TIMER4_VIC, IRQ_TIMER4);
+	s3c_init_vic_timer_irq(5, IRQ_TIMER0);
 
 	s3c_init_uart_irqs(uart_irqs, ARRAY_SIZE(uart_irqs));
 }
diff --git a/arch/arm/plat-s5p/irq-gpioint.c b/arch/arm/plat-s5p/irq-gpioint.c
index cd6d67c..135abda 100644
--- a/arch/arm/plat-s5p/irq-gpioint.c
+++ b/arch/arm/plat-s5p/irq-gpioint.c
@@ -41,72 +41,11 @@ struct s5p_gpioint_bank {
 
 LIST_HEAD(banks);
 
-static int s5p_gpioint_get_offset(struct irq_data *data)
+static int s5p_gpioint_set_type(struct irq_data *d, unsigned int type)
 {
-	struct s3c_gpio_chip *chip = irq_data_get_irq_handler_data(data);
-	return data->irq - chip->irq_base;
-}
-
-static void s5p_gpioint_ack(struct irq_data *data)
-{
-	struct s3c_gpio_chip *chip = irq_data_get_irq_handler_data(data);
-	int group, offset, pend_offset;
-	unsigned int value;
-
-	group = chip->group;
-	offset = s5p_gpioint_get_offset(data);
-	pend_offset = REG_OFFSET(group);
-
-	value = __raw_readl(GPIO_BASE(chip) + PEND_OFFSET + pend_offset);
-	value |= BIT(offset);
-	__raw_writel(value, GPIO_BASE(chip) + PEND_OFFSET + pend_offset);
-}
-
-static void s5p_gpioint_mask(struct irq_data *data)
-{
-	struct s3c_gpio_chip *chip = irq_data_get_irq_handler_data(data);
-	int group, offset, mask_offset;
-	unsigned int value;
-
-	group = chip->group;
-	offset = s5p_gpioint_get_offset(data);
-	mask_offset = REG_OFFSET(group);
-
-	value = __raw_readl(GPIO_BASE(chip) + MASK_OFFSET + mask_offset);
-	value |= BIT(offset);
-	__raw_writel(value, GPIO_BASE(chip) + MASK_OFFSET + mask_offset);
-}
-
-static void s5p_gpioint_unmask(struct irq_data *data)
-{
-	struct s3c_gpio_chip *chip = irq_data_get_irq_handler_data(data);
-	int group, offset, mask_offset;
-	unsigned int value;
-
-	group = chip->group;
-	offset = s5p_gpioint_get_offset(data);
-	mask_offset = REG_OFFSET(group);
-
-	value = __raw_readl(GPIO_BASE(chip) + MASK_OFFSET + mask_offset);
-	value &= ~BIT(offset);
-	__raw_writel(value, GPIO_BASE(chip) + MASK_OFFSET + mask_offset);
-}
-
-static void s5p_gpioint_mask_ack(struct irq_data *data)
-{
-	s5p_gpioint_mask(data);
-	s5p_gpioint_ack(data);
-}
-
-static int s5p_gpioint_set_type(struct irq_data *data, unsigned int type)
-{
-	struct s3c_gpio_chip *chip = irq_data_get_irq_handler_data(data);
-	int group, offset, con_offset;
-	unsigned int value;
-
-	group = chip->group;
-	offset = s5p_gpioint_get_offset(data);
-	con_offset = REG_OFFSET(group);
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct irq_chip_type *ct = gc->chip_types;
+	unsigned int shift = (d->irq - gc->irq_base) << 2;
 
 	switch (type) {
 	case IRQ_TYPE_EDGE_RISING:
@@ -130,23 +69,12 @@ static int s5p_gpioint_set_type(struct irq_data *data, unsigned int type)
 		return -EINVAL;
 	}
 
-	value = __raw_readl(GPIO_BASE(chip) + CON_OFFSET + con_offset);
-	value &= ~(0x7 << (offset * 0x4));
-	value |= (type << (offset * 0x4));
-	__raw_writel(value, GPIO_BASE(chip) + CON_OFFSET + con_offset);
-
+	gc->type_cache &= ~(0x7 << shift);
+	gc->type_cache |= type << shift;
+	writel(gc->type_cache, gc->reg_base + ct->regs.type);
 	return 0;
 }
 
-static struct irq_chip s5p_gpioint = {
-	.name		= "s5p_gpioint",
-	.irq_ack	= s5p_gpioint_ack,
-	.irq_mask	= s5p_gpioint_mask,
-	.irq_mask_ack	= s5p_gpioint_mask_ack,
-	.irq_unmask	= s5p_gpioint_unmask,
-	.irq_set_type	= s5p_gpioint_set_type,
-};
-
 static void s5p_gpioint_handler(unsigned int irq, struct irq_desc *desc)
 {
 	struct s5p_gpioint_bank *bank = irq_get_handler_data(irq);
@@ -179,9 +107,10 @@ static void s5p_gpioint_handler(unsigned int irq, struct irq_desc *desc)
 static __init int s5p_gpioint_add(struct s3c_gpio_chip *chip)
 {
 	static int used_gpioint_groups = 0;
-	int irq, group = chip->group;
-	int i;
+	int group = chip->group;
 	struct s5p_gpioint_bank *bank = NULL;
+	struct irq_chip_generic *gc;
+	struct irq_chip_type *ct;
 
 	if (used_gpioint_groups >= S5P_GPIOINT_GROUP_COUNT)
 		return -ENOMEM;
@@ -211,19 +140,28 @@ static __init int s5p_gpioint_add(struct s3c_gpio_chip *chip)
 	 * chained GPIO irq has been successfully registered, allocate new gpio
 	 * int group and assign irq nubmers
 	 */
-
 	chip->irq_base = S5P_GPIOINT_BASE +
 			 used_gpioint_groups * S5P_GPIOINT_GROUP_SIZE;
 	used_gpioint_groups++;
 
 	bank->chips[group - bank->start] = chip;
-	for (i = 0; i < chip->chip.ngpio; i++) {
-		irq = chip->irq_base + i;
-		irq_set_chip(irq, &s5p_gpioint);
-		irq_set_handler_data(irq, chip);
-		irq_set_handler(irq, handle_level_irq);
-		set_irq_flags(irq, IRQF_VALID);
-	}
+
+	gc = irq_alloc_generic_chip("s5p_gpioint", 1, chip->irq_base,
+				    (void __iomem *)GPIO_BASE(chip),
+				    handle_level_irq);
+	if (!gc)
+		return -ENOMEM;
+	ct = gc->chip_types;
+	ct->chip.irq_ack = irq_gc_ack;
+	ct->chip.irq_mask = irq_gc_mask_set_bit;
+	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
+	ct->chip.irq_set_type = s5p_gpioint_set_type,
+	ct->regs.ack = PEND_OFFSET + REG_OFFSET(chip->group);
+	ct->regs.mask = MASK_OFFSET + REG_OFFSET(chip->group);
+	ct->regs.type = CON_OFFSET + REG_OFFSET(chip->group);
+	irq_setup_generic_chip(gc, IRQ_MSK(chip->chip.ngpio),
+			       IRQ_GC_INIT_MASK_CACHE,
+			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
 	return 0;
 }
 
diff --git a/arch/arm/plat-s5p/irq.c b/arch/arm/plat-s5p/irq.c
index 5560b12..a97c089 100644
--- a/arch/arm/plat-s5p/irq.c
+++ b/arch/arm/plat-s5p/irq.c
@@ -64,11 +64,7 @@ void __init s5p_init_irq(u32 *vic, u32 num_vic)
 		vic_init(VA_VIC(irq), VIC_BASE(irq), vic[irq], 0);
 #endif
 
-	s3c_init_vic_timer_irq(IRQ_TIMER0_VIC, IRQ_TIMER0);
-	s3c_init_vic_timer_irq(IRQ_TIMER1_VIC, IRQ_TIMER1);
-	s3c_init_vic_timer_irq(IRQ_TIMER2_VIC, IRQ_TIMER2);
-	s3c_init_vic_timer_irq(IRQ_TIMER3_VIC, IRQ_TIMER3);
-	s3c_init_vic_timer_irq(IRQ_TIMER4_VIC, IRQ_TIMER4);
+	s3c_init_vic_timer_irq(5, IRQ_TIMER0);
 
 	s3c_init_uart_irqs(uart_irqs, ARRAY_SIZE(uart_irqs));
 }
diff --git a/arch/arm/plat-samsung/include/plat/irq-vic-timer.h b/arch/arm/plat-samsung/include/plat/irq-vic-timer.h
index a90b534..5b9c42f 100644
--- a/arch/arm/plat-samsung/include/plat/irq-vic-timer.h
+++ b/arch/arm/plat-samsung/include/plat/irq-vic-timer.h
@@ -10,4 +10,4 @@
  * published by the Free Software Foundation.
 */
 
-extern void s3c_init_vic_timer_irq(unsigned int vic, unsigned int timer);
+extern void s3c_init_vic_timer_irq(unsigned int num, unsigned int timer_irq);
diff --git a/arch/arm/plat-samsung/irq-uart.c b/arch/arm/plat-samsung/irq-uart.c
index 4d4e571..32582c0 100644
--- a/arch/arm/plat-samsung/irq-uart.c
+++ b/arch/arm/plat-samsung/irq-uart.c
@@ -27,60 +27,6 @@
 /* Note, we make use of the fact that the parent IRQs, IRQ_UART[0..3]
  * are consecutive when looking up the interrupt in the demux routines.
  */
-
-static inline void __iomem *s3c_irq_uart_base(struct irq_data *data)
-{
-	struct s3c_uart_irq *uirq = irq_data_get_irq_chip_data(data);
-	return uirq->regs;
-}
-
-static inline unsigned int s3c_irq_uart_bit(unsigned int irq)
-{
-	return irq & 3;
-}
-
-static void s3c_irq_uart_mask(struct irq_data *data)
-{
-	void __iomem *regs = s3c_irq_uart_base(data);
-	unsigned int bit = s3c_irq_uart_bit(data->irq);
-	u32 reg;
-
-	reg = __raw_readl(regs + S3C64XX_UINTM);
-	reg |= (1 << bit);
-	__raw_writel(reg, regs + S3C64XX_UINTM);
-}
-
-static void s3c_irq_uart_maskack(struct irq_data *data)
-{
-	void __iomem *regs = s3c_irq_uart_base(data);
-	unsigned int bit = s3c_irq_uart_bit(data->irq);
-	u32 reg;
-
-	reg = __raw_readl(regs + S3C64XX_UINTM);
-	reg |= (1 << bit);
-	__raw_writel(reg, regs + S3C64XX_UINTM);
-	__raw_writel(1 << bit, regs + S3C64XX_UINTP);
-}
-
-static void s3c_irq_uart_unmask(struct irq_data *data)
-{
-	void __iomem *regs = s3c_irq_uart_base(data);
-	unsigned int bit = s3c_irq_uart_bit(data->irq);
-	u32 reg;
-
-	reg = __raw_readl(regs + S3C64XX_UINTM);
-	reg &= ~(1 << bit);
-	__raw_writel(reg, regs + S3C64XX_UINTM);
-}
-
-static void s3c_irq_uart_ack(struct irq_data *data)
-{
-	void __iomem *regs = s3c_irq_uart_base(data);
-	unsigned int bit = s3c_irq_uart_bit(data->irq);
-
-	__raw_writel(1 << bit, regs + S3C64XX_UINTP);
-}
-
 static void s3c_irq_demux_uart(unsigned int irq, struct irq_desc *desc)
 {
 	struct s3c_uart_irq *uirq = desc->irq_data.handler_data;
@@ -97,30 +43,25 @@ static void s3c_irq_demux_uart(unsigned int irq, struct irq_desc *desc)
 		generic_handle_irq(base + 3);
 }
 
-static struct irq_chip s3c_irq_uart = {
-	.name		= "s3c-uart",
-	.irq_mask	= s3c_irq_uart_mask,
-	.irq_unmask	= s3c_irq_uart_unmask,
-	.irq_mask_ack	= s3c_irq_uart_maskack,
-	.irq_ack	= s3c_irq_uart_ack,
-};
-
 static void __init s3c_init_uart_irq(struct s3c_uart_irq *uirq)
 {
 	void __iomem *reg_base = uirq->regs;
-	unsigned int irq;
-	int offs;
+	struct irq_chip_generic *gc;
+	struct irq_chip_type *ct;
 
 	/* mask all interrupts at the start. */
 	__raw_writel(0xf, reg_base + S3C64XX_UINTM);
 
-	for (offs = 0; offs < 3; offs++) {
-		irq = uirq->base_irq + offs;
-
-		irq_set_chip_and_handler(irq, &s3c_irq_uart, handle_level_irq);
-		irq_set_chip_data(irq, uirq);
-		set_irq_flags(irq, IRQF_VALID);
-	}
+	gc = irq_alloc_generic_chip("s3c-uart", 1, uirq->base_irq, reg_base,
+				    handle_level_irq);
+	ct = gc->chip_types;
+	ct->chip.irq_ack = irq_gc_ack;
+	ct->chip.irq_mask = irq_gc_mask_set_bit;
+	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
+	ct->regs.ack = S3C64XX_UINTP;
+	ct->regs.mask = S3C64XX_UINTM;
+	irq_setup_generic_chip(gc, IRQ_MSK(4), IRQ_GC_INIT_MASK_CACHE,
+			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
 
 	irq_set_handler_data(uirq->parent_irq, uirq);
 	irq_set_chained_handler(uirq->parent_irq, s3c_irq_demux_uart);
diff --git a/arch/arm/plat-samsung/irq-vic-timer.c b/arch/arm/plat-samsung/irq-vic-timer.c
index d6ad66a..a607546 100644
--- a/arch/arm/plat-samsung/irq-vic-timer.c
+++ b/arch/arm/plat-samsung/irq-vic-timer.c
@@ -28,60 +28,43 @@ static void s3c_irq_demux_vic_timer(unsigned int irq, struct irq_desc *desc)
 }
 
 /* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */
-
-static void s3c_irq_timer_mask(struct irq_data *data)
-{
-	u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-	u32 mask = (u32)data->chip_data;
-
-	reg &= 0x1f;  /* mask out pending interrupts */
-	reg &= ~mask;
-	__raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static void s3c_irq_timer_unmask(struct irq_data *data)
+static void s3c_irq_timer_ack(struct irq_data *d)
 {
-	u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-	u32 mask = (u32)data->chip_data;
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	u32 mask = (1 << 5) << (d->irq - gc->irq_base);
 
-	reg &= 0x1f;  /* mask out pending interrupts */
-	reg |= mask;
-	__raw_writel(reg, S3C64XX_TINT_CSTAT);
+	irq_reg_writel(mask | gc->mask_cache, gc->reg_base);
 }
 
-static void s3c_irq_timer_ack(struct irq_data *data)
-{
-	u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
-	u32 mask = (u32)data->chip_data;
-
-	reg &= 0x1f;
-	reg |= mask << 5;
-	__raw_writel(reg, S3C64XX_TINT_CSTAT);
-}
-
-static struct irq_chip s3c_irq_timer = {
-	.name		= "s3c-timer",
-	.irq_mask	= s3c_irq_timer_mask,
-	.irq_unmask	= s3c_irq_timer_unmask,
-	.irq_ack	= s3c_irq_timer_ack,
-};
-
 /**
  * s3c_init_vic_timer_irq() - initialise timer irq chanined off VIC.\
- * @parent_irq: The parent IRQ on the VIC for the timer.
- * @timer_irq: The IRQ to be used for the timer.
+ * @num: Number of timers to initialize
+ * @timer_irq: Base IRQ number to be used for the timers.
  *
  * Register the necessary IRQ chaining and support for the timer IRQs
  * chained of the VIC.
  */
-void __init s3c_init_vic_timer_irq(unsigned int parent_irq,
-				   unsigned int timer_irq)
+void __init s3c_init_vic_timer_irq(unsigned int num, unsigned int timer_irq)
 {
+	unsigned int pirq[5] = { IRQ_TIMER0_VIC, IRQ_TIMER1_VIC, IRQ_TIMER2_VIC,
+				 IRQ_TIMER3_VIC, IRQ_TIMER4_VIC };
+	struct irq_chip_generic *s3c_tgc;
+	struct irq_chip_type *ct;
+	unsigned int i;
 
-	irq_set_chained_handler(parent_irq, s3c_irq_demux_vic_timer);
-	irq_set_handler_data(parent_irq, (void *)timer_irq);
+	s3c_tgc = irq_alloc_generic_chip("s3c-timer", 1, timer_irq,
+					 S3C64XX_TINT_CSTAT, handle_level_irq);
+	ct = s3c_tgc->chip_types;
+	ct->chip.irq_mask = irq_gc_mask_clr_bit;
+	ct->chip.irq_unmask = irq_gc_mask_set_bit;
+	ct->chip.irq_ack = s3c_irq_timer_ack;
+	irq_setup_generic_chip(s3c_tgc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
+			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
+	/* Clear the upper bits of the mask_cache*/
+	s3c_tgc->mask_cache &= 0x1f;
 
-	irq_set_chip_and_handler(timer_irq, &s3c_irq_timer, handle_level_irq);
-	irq_set_chip_data(timer_irq, (void *)(1 << (timer_irq - IRQ_TIMER0)));
-	set_irq_flags(timer_irq, IRQF_VALID);
+	for (i = 0; i < num; i++, timer_irq++) {
+		irq_set_chained_handler(pirq[i], s3c_irq_demux_vic_timer);
+		irq_set_handler_data(pirq[i], (void *)timer_irq);
+	}
 }