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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2011-09-17 21:49:36 +0800
committerArnd Bergmann <arnd@arndb.de>2011-11-29 15:46:18 +0000
commitd0fbda9add3281c97205649150fc99fc26148792 (patch)
tree9e3488936b75252a512bb7e13dedfbbbacf9f363 /arch/arm/mach-at91/gpio.c
parent3285e0ec088febc5a88f57ddd78385a7da71476c (diff)
ARM: at91/gpio: drop PIN_BASE
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'arch/arm/mach-at91/gpio.c')
-rw-r--r--arch/arm/mach-at91/gpio.c54
1 files changed, 28 insertions, 26 deletions
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index 163c724882c2..d000448b11ac 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -59,18 +59,17 @@ static int at91_gpiolib_direction_input(struct gpio_chip *chip,
}
static struct at91_gpio_chip gpio_chip[] = {
- AT91_GPIO_CHIP("pioA", 0x00 + PIN_BASE, 32),
- AT91_GPIO_CHIP("pioB", 0x20 + PIN_BASE, 32),
- AT91_GPIO_CHIP("pioC", 0x40 + PIN_BASE, 32),
- AT91_GPIO_CHIP("pioD", 0x60 + PIN_BASE, 32),
- AT91_GPIO_CHIP("pioE", 0x80 + PIN_BASE, 32),
+ AT91_GPIO_CHIP("pioA", 0x00, 32),
+ AT91_GPIO_CHIP("pioB", 0x20, 32),
+ AT91_GPIO_CHIP("pioC", 0x40, 32),
+ AT91_GPIO_CHIP("pioD", 0x60, 32),
+ AT91_GPIO_CHIP("pioE", 0x80, 32),
};
static int gpio_banks;
static inline void __iomem *pin_to_controller(unsigned pin)
{
- pin -= PIN_BASE;
pin /= 32;
if (likely(pin < gpio_banks))
return gpio_chip[pin].regbase;
@@ -80,7 +79,6 @@ static inline void __iomem *pin_to_controller(unsigned pin)
static inline unsigned pin_to_mask(unsigned pin)
{
- pin -= PIN_BASE;
return 1 << (pin % 32);
}
@@ -275,8 +273,9 @@ static u32 backups[MAX_GPIO_BANKS];
static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
{
- unsigned mask = pin_to_mask(d->irq);
- unsigned bank = (d->irq - PIN_BASE) / 32;
+ unsigned pin = irq_to_gpio(d->irq);
+ unsigned mask = pin_to_mask(pin);
+ unsigned bank = pin / 32;
if (unlikely(bank >= MAX_GPIO_BANKS))
return -EINVAL;
@@ -345,8 +344,9 @@ void at91_gpio_resume(void)
static void gpio_irq_mask(struct irq_data *d)
{
- void __iomem *pio = pin_to_controller(d->irq);
- unsigned mask = pin_to_mask(d->irq);
+ unsigned pin = irq_to_gpio(d->irq);
+ void __iomem *pio = pin_to_controller(pin);
+ unsigned mask = pin_to_mask(pin);
if (pio)
__raw_writel(mask, pio + PIO_IDR);
@@ -354,8 +354,9 @@ static void gpio_irq_mask(struct irq_data *d)
static void gpio_irq_unmask(struct irq_data *d)
{
- void __iomem *pio = pin_to_controller(d->irq);
- unsigned mask = pin_to_mask(d->irq);
+ unsigned pin = irq_to_gpio(d->irq);
+ void __iomem *pio = pin_to_controller(pin);
+ unsigned mask = pin_to_mask(pin);
if (pio)
__raw_writel(mask, pio + PIO_IER);
@@ -383,7 +384,7 @@ static struct irq_chip gpio_irqchip = {
static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
{
- unsigned pin;
+ unsigned irq_pin;
struct irq_data *idata = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(idata);
struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(idata);
@@ -406,12 +407,12 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
continue;
}
- pin = at91_gpio->chip.base;
+ irq_pin = gpio_to_irq(at91_gpio->chip.base);
while (isr) {
if (isr & 1)
- generic_handle_irq(pin);
- pin++;
+ generic_handle_irq(irq_pin);
+ irq_pin++;
isr >>= 1;
}
}
@@ -439,7 +440,7 @@ static int at91_gpio_show(struct seq_file *s, void *unused)
seq_printf(s, "%i:\t", j);
for (bank = 0; bank < gpio_banks; bank++) {
- unsigned pin = PIN_BASE + (32 * bank) + j;
+ unsigned pin = (32 * bank) + j;
void __iomem *pio = pin_to_controller(pin);
unsigned mask = pin_to_mask(pin);
@@ -492,10 +493,10 @@ static struct lock_class_key gpio_lock_class;
*/
void __init at91_gpio_irq_setup(void)
{
- unsigned pioc, pin;
+ unsigned pioc, irq = gpio_to_irq(0);
struct at91_gpio_chip *this, *prev;
- for (pioc = 0, pin = PIN_BASE, this = gpio_chip, prev = NULL;
+ for (pioc = 0, this = gpio_chip, prev = NULL;
pioc++ < gpio_banks;
prev = this, this++) {
unsigned id = this->id;
@@ -503,16 +504,17 @@ void __init at91_gpio_irq_setup(void)
__raw_writel(~0, this->regbase + PIO_IDR);
- for (i = 0, pin = this->chip.base; i < 32; i++, pin++) {
- irq_set_lockdep_class(pin, &gpio_lock_class);
+ for (i = 0, irq = gpio_to_irq(this->chip.base); i < 32;
+ i++, irq++) {
+ irq_set_lockdep_class(irq, &gpio_lock_class);
/*
* Can use the "simple" and not "edge" handler since it's
* shorter, and the AIC handles interrupts sanely.
*/
- irq_set_chip_and_handler(pin, &gpio_irqchip,
+ irq_set_chip_and_handler(irq, &gpio_irqchip,
handle_simple_irq);
- set_irq_flags(pin, IRQF_VALID);
+ set_irq_flags(irq, IRQF_VALID);
}
/* The toplevel handler handles one bank of GPIOs, except
@@ -525,7 +527,7 @@ void __init at91_gpio_irq_setup(void)
irq_set_chip_data(id, this);
irq_set_chained_handler(id, gpio_irq_handler);
}
- pr_info("AT91: %d gpio irqs in %d banks\n", pin - PIN_BASE, gpio_banks);
+ pr_info("AT91: %d gpio irqs in %d banks\n", irq, gpio_banks);
}
/* gpiolib support */
@@ -614,7 +616,7 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
at91_gpio = &gpio_chip[i];
at91_gpio->id = data[i].id;
- at91_gpio->chip.base = PIN_BASE + i * 32;
+ at91_gpio->chip.base = i * 32;
at91_gpio->regbase = ioremap(data[i].regbase, 512);
if (!at91_gpio->regbase) {