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| author | Joachim Eastwood <joachim.eastwood@jotron.com> | 2010-02-10 12:31:41 +0100 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 00:30:52 -0500 |
| commit | 7f4f69f991146fa976cbc914a50285b2afc0ad93 (patch) | |
| tree | 3cbcc6cdf3e433e2be68278b51a22aa7be9f9773 /arch/blackfin | |
| parent | f8e6dbffa7a6cb3da3bcaf1fde3039896e1ac764 (diff) | |
| download | linux-stable-7f4f69f991146fa976cbc914a50285b2afc0ad93.tar.gz linux-stable-7f4f69f991146fa976cbc914a50285b2afc0ad93.tar.bz2 linux-stable-7f4f69f991146fa976cbc914a50285b2afc0ad93.zip | |
Blackfin: GPIO: implement to_irq handler
This makes it possible to support IRQs coming from off-chip GPIO
controllers.
Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/include/asm/gpio.h | 17 | ||||
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 6 |
2 files changed, 19 insertions, 4 deletions
diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h index 539468a05057..91bd2d7b9d55 100644 --- a/arch/blackfin/include/asm/gpio.h +++ b/arch/blackfin/include/asm/gpio.h @@ -70,6 +70,8 @@ #ifndef __ASSEMBLY__ +#include <linux/compiler.h> + /*********************************************************** * * FUNCTIONS: Blackfin General Purpose Ports Access Functions @@ -223,6 +225,9 @@ int bfin_gpio_direction_output(unsigned gpio, int value); int bfin_gpio_get_value(unsigned gpio); void bfin_gpio_set_value(unsigned gpio, int value); +#include <asm/irq.h> +#include <asm/errno.h> + #ifdef CONFIG_GPIOLIB #include <asm-generic/gpio.h> /* cansleep wrappers */ @@ -247,6 +252,11 @@ static inline int gpio_cansleep(unsigned int gpio) return __gpio_cansleep(gpio); } +static inline int gpio_to_irq(unsigned gpio) +{ + return __gpio_to_irq(gpio); +} + #else /* !CONFIG_GPIOLIB */ static inline int gpio_request(unsigned gpio, const char *label) @@ -279,10 +289,6 @@ static inline void gpio_set_value(unsigned gpio, int value) return bfin_gpio_set_value(gpio, value); } -#include <asm-generic/gpio.h> /* cansleep wrappers */ -#endif /* !CONFIG_GPIOLIB */ -#include <asm/irq.h> - static inline int gpio_to_irq(unsigned gpio) { if (likely(gpio < MAX_BLACKFIN_GPIOS)) @@ -291,6 +297,9 @@ static inline int gpio_to_irq(unsigned gpio) return -EINVAL; } +#include <asm-generic/gpio.h> /* cansleep wrappers */ +#endif /* !CONFIG_GPIOLIB */ + static inline int irq_to_gpio(unsigned irq) { return (irq - GPIO_IRQ_BASE); diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index 0dd9cf913503..6dcb344001f0 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -1319,6 +1319,11 @@ void bfin_gpiolib_gpio_free(struct gpio_chip *chip, unsigned gpio) return bfin_gpio_free(gpio); } +int bfin_gpiolib_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) +{ + return gpio + GPIO_IRQ_BASE; +} + static struct gpio_chip bfin_chip = { .label = "BFIN-GPIO", .direction_input = bfin_gpiolib_direction_input, @@ -1327,6 +1332,7 @@ static struct gpio_chip bfin_chip = { .set = bfin_gpiolib_set_value, .request = bfin_gpiolib_gpio_request, .free = bfin_gpiolib_gpio_free, + .to_irq = bfin_gpiolib_gpio_to_irq, .base = 0, .ngpio = MAX_BLACKFIN_GPIOS, }; |