diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2012-09-03 10:18:08 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-09-04 08:26:49 +0200 |
| commit | 2f8fe263824151b55487f701718ac4467240ad7a (patch) | |
| tree | 68774350c087425dcb26e8a561eacddbd03260d9 /include | |
| parent | f64bd3d932ec033f02715a5e92b57f52821a4b06 (diff) | |
| download | barebox-2f8fe263824151b55487f701718ac4467240ad7a.tar.gz barebox-2f8fe263824151b55487f701718ac4467240ad7a.tar.xz | |
add gpiolib support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/gpio.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/include/gpio.h b/include/gpio.h index b7d840211a..9fb11c3268 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -5,10 +5,35 @@ static inline int gpio_request(unsigned gpio, const char *label) { - return 0; + return 0; } static inline void gpio_free(unsigned gpio) { } + +struct gpio_chip; + +struct gpio_ops { + int (*direction_input)(struct gpio_chip *chip, unsigned offset); + int (*direction_output)(struct gpio_chip *chip, unsigned offset, int value); + int (*get)(struct gpio_chip *chip, unsigned offset); + void (*set)(struct gpio_chip *chip, unsigned offset, int value); +}; + +struct gpio_chip { + struct device_d *dev; + + int base; + int ngpio; + + struct gpio_ops *ops; + + struct list_head list; +}; + +int gpiochip_add(struct gpio_chip *chip); + +int gpio_get_num(struct device_d *dev, int gpio); + #endif /* __GPIO_H */ |