diff options
| author | David Brownell <dbrownell@users.sourceforge.net> | 2008-12-11 04:35:25 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2008-12-11 04:35:25 +0300 |
| commit | a007b7096feea2d865ad3e7177eb8be34041bef9 (patch) | |
| tree | be9a46ce0a25639481d1c6db1dd6d936f4c5b9e1 /arch/arm | |
| parent | 21c867f1dedc21fb6e5244b7b27cfcfd09b83188 (diff) | |
| download | linux-a007b7096feea2d865ad3e7177eb8be34041bef9.tar.xz | |
ARM: OMAP: gpios implement new to_irq()
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/plat-omap/gpio.c | 9 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/mach/gpio.h | 16 |
2 files changed, 21 insertions, 4 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 8ff225bb1e46..e07ab233e783 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -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 diff --git a/arch/arm/plat-omap/include/mach/gpio.h b/arch/arm/plat-omap/include/mach/gpio.h index 98e9008b7e9d..5f996f350c84 100644 --- a/arch/arm/plat-omap/include/mach/gpio.h +++ b/arch/arm/plat-omap/include/mach/gpio.h @@ -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 |