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ARM: OMAP: gpios implement new to_irq()

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Make OMAP use the new __gpio_to_irq() hook, to make it easier to
support IRQs coming in from off-chip gpio controllers like the
TWL4030/TPS65930 chip used on OMAP3 boads like Beagleboard.org and
the Gumstix Overo.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
David Brownell 2008-12-10 17:35:25 -08:00 committed by Tony Lindgren
parent 21c867f1de
commit a007b7096f
2 changed files with 21 additions and 4 deletions
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9
arch/arm/plat-omap/gpio.c
View File

@ -1285,6 +1285,14 @@ static void gpio_set(struct gpio_chip *chip, unsigned offset, int value)
spin_unlock_irqrestore(&bank->lock, flags);
}
static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
{
struct gpio_bank *bank;
bank = container_of(chip, struct gpio_bank, chip);
return bank->virtual_irq_start + offset;
}
/*---------------------------------------------------------------------*/
static int initialized;
@ -1480,6 +1488,7 @@ static int __init _omap_gpio_init(void)
bank->chip.get = gpio_get;
bank->chip.direction_output = gpio_output;
bank->chip.set = gpio_set;
bank->chip.to_irq = gpio_2irq;
if (bank_is_mpuio(bank)) {
bank->chip.label = "mpuio";
#ifdef CONFIG_ARCH_OMAP16XX

16
arch/arm/plat-omap/include/mach/gpio.h
View File

@ -109,16 +109,24 @@ static inline int gpio_cansleep(unsigned gpio)
static inline int gpio_to_irq(unsigned gpio)
{
if (gpio < (OMAP_MAX_GPIO_LINES + 16))
return OMAP_GPIO_IRQ(gpio);
return -EINVAL;
return __gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned irq)
{
int tmp;
/* omap1 SOC mpuio */
if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
return irq - IH_GPIO_BASE;
/* SOC gpio */
tmp = irq - IH_GPIO_BASE;
if (tmp < OMAP_MAX_GPIO_LINES)
return tmp;
/* we don't supply reverse mappings for non-SOC gpios */
return -EIO;
}
#endif