3357fcb24a
* Generalize GPIO handling. * Add libs to configure gpio's clocks and pads * Add Interrupt handling. * Introduce mmio.h and log.h Change-Id: I928e4c807d15031de2eede4b3ecff62df795f8ac
35 lines
791 B
C
35 lines
791 B
C
#ifndef __INCLUDE_GPIO_H__
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#define __INCLUDE_GPIO_H__
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struct gpio
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{
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int nr; /* GPIO number */
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int mode; /* GPIO mode (input=0/output=1) */
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};
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#define GPIO_MODE_INPUT 0
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#define GPIO_MODE_OUTPUT 1
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int gpio_init();
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/* request access to a gpio */
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int gpio_claim(char *owner, int nr, struct gpio **gpio);
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/* Configure the GPIO for a certain purpose */
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int gpio_pin_mode(struct gpio *gpio, int mode);
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/* Set the value for a GPIO */
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int gpio_set(struct gpio *gpio, int value);
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/* Read the current value of the GPIO */
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int gpio_read(struct gpio *gpio, int *value);
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/* Read and clear the value interrupt value of the GPIO */
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int gpio_intr_read(struct gpio *gpio, int *value);
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/* Interrupt hook */
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int gpio_intr_message(message * m);
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int gpio_release();
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#endif /* __INCLUDE_GPIO_H__ */
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