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xtensa: Convert s6000 gpio irq_chip to new functions 

Also use proper wrappers for irq_desc access.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Chris Zankel <chris@zankel.net>
LKML-Reference: <20110206211137.750284615@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-06 22:10:53 +01:00
parent 495e0c7940
commit 0e77575346
1 changed files with 17 additions and 18 deletions
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35
arch/xtensa/variants/s6000/gpio.c
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@ -85,30 +85,29 @@ int s6_gpio_init(u32 afsel)
return gpiochip_add(&gpiochip);
}
static void ack(unsigned int irq)
static void ack(struct irq_data *d)
{
writeb(1 << (irq - IRQ_BASE), S6_REG_GPIO + S6_GPIO_IC);
writeb(1 << (d->irq - IRQ_BASE), S6_REG_GPIO + S6_GPIO_IC);
}
static void mask(unsigned int irq)
static void mask(struct irq_data *d)
{
u8 r = readb(S6_REG_GPIO + S6_GPIO_IE);
r &= ~(1 << (irq - IRQ_BASE));
r &= ~(1 << (d->irq - IRQ_BASE));
writeb(r, S6_REG_GPIO + S6_GPIO_IE);
}
static void unmask(unsigned int irq)
static void unmask(struct irq_data *d)
{
u8 m = readb(S6_REG_GPIO + S6_GPIO_IE);
m |= 1 << (irq - IRQ_BASE);
m |= 1 << (d->irq - IRQ_BASE);
writeb(m, S6_REG_GPIO + S6_GPIO_IE);
}
static int set_type(unsigned int irq, unsigned int type)
static int set_type(struct irq_data *d, unsigned int type)
{
const u8 m = 1 << (irq - IRQ_BASE);
const u8 m = 1 << (d->irq - IRQ_BASE);
irq_flow_handler_t handler;
struct irq_desc *desc;
u8 reg;
if (type == IRQ_TYPE_PROBE) {
@ -129,8 +128,7 @@ static int set_type(unsigned int irq, unsigned int type)
handler = handle_edge_irq;
}
writeb(reg, S6_REG_GPIO + S6_GPIO_BANK(0) + S6_GPIO_IS);
desc = irq_to_desc(irq);
desc->handle_irq = handler;
__set_irq_handler_unlocked(irq, handler);
reg = readb(S6_REG_GPIO + S6_GPIO_BANK(0) + S6_GPIO_IEV);
if (type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING))
@ -150,22 +148,23 @@ static int set_type(unsigned int irq, unsigned int type)
static struct irq_chip gpioirqs = {
.name = "GPIO",
.ack = ack,
.mask = mask,
.unmask = unmask,
.set_type = set_type,
.irq_ack = ack,
.irq_mask = mask,
.irq_unmask = unmask,
.irq_set_type = set_type,
};
static u8 demux_masks[4];
static void demux_irqs(unsigned int irq, struct irq_desc *desc)
{
struct irq_chip *chip = get_irq_desc_chip(desc);
u8 *mask = get_irq_desc_data(desc);
u8 pending;
int cirq;
desc->chip->mask(irq);
desc->chip->ack(irq);
chip->irq_mask(&desc->irq_data);
chip->irq_ack(&desc->irq_data));
pending = readb(S6_REG_GPIO + S6_GPIO_BANK(0) + S6_GPIO_MIS) & *mask;
cirq = IRQ_BASE - 1;
while (pending) {
@ -174,7 +173,7 @@ static void demux_irqs(unsigned int irq, struct irq_desc *desc)
pending >>= n;
generic_handle_irq(cirq);
}
desc->chip->unmask(irq);
chip->irq_unmask(&desc->irq_data));
}
extern const signed char *platform_irq_mappings[XTENSA_NR_IRQS];