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Diffstat (limited to 'arch/arm/plat-s5p/irq-gpioint.c')
-rw-r--r--arch/arm/plat-s5p/irq-gpioint.c116
1 files changed, 27 insertions, 89 deletions
diff --git a/arch/arm/plat-s5p/irq-gpioint.c b/arch/arm/plat-s5p/irq-gpioint.c
index cd6d67c8382..135abda31c9 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;
}