48 lines
1007 B
C
48 lines
1007 B
C
#ifndef __GPIO_H
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#define __GPIO_H
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#include <asm/gpio.h>
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#ifndef CONFIG_GPIOLIB
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static inline int gpio_request(unsigned gpio, const char *label)
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{
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return 0;
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}
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static inline void gpio_free(unsigned gpio)
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{
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}
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#else
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int gpio_request(unsigned gpio, const char *label);
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void gpio_free(unsigned gpio);
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#endif
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struct gpio_chip;
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struct gpio_ops {
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int (*request)(struct gpio_chip *chip, unsigned offset);
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void (*free)(struct gpio_chip *chip, unsigned offset);
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int (*direction_input)(struct gpio_chip *chip, unsigned offset);
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int (*direction_output)(struct gpio_chip *chip, unsigned offset, int value);
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int (*get)(struct gpio_chip *chip, unsigned offset);
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void (*set)(struct gpio_chip *chip, unsigned offset, int value);
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};
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struct gpio_chip {
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struct device_d *dev;
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int base;
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int ngpio;
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struct gpio_ops *ops;
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struct list_head list;
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};
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int gpiochip_add(struct gpio_chip *chip);
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void gpiochip_remove(struct gpio_chip *chip);
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int gpio_get_num(struct device_d *dev, int gpio);
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#endif /* __GPIO_H */
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