gpio.h

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/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2019 Intel Corporation. All rights reserved.
 *
 * Author: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
 */
 
#ifndef __SOF_DRIVERS_GPIO_H__
#define __SOF_DRIVERS_GPIO_H__
 
#include <sof/drivers/iomux.h>
 
struct gpio;
 
enum gpio_direction {
    GPIO_DIRECTION_INPUT,
    GPIO_DIRECTION_OUTPUT,
};
 
enum gpio_level {
    GPIO_LEVEL_LOW,
    GPIO_LEVEL_HIGH,
};
 
struct gpio_config {
    enum gpio_direction direction;
};
 
struct gpio_pin_config {
    unsigned int mux_id;
    struct iomux_pin_config mux_config;
};
 
extern const struct gpio_pin_config gpio_data[];
extern const int n_gpios;
 
int gpio_write(const struct gpio *gpio, unsigned int port,
           enum gpio_level level);
int gpio_read(const struct gpio *gpio, unsigned int port);
int gpio_configure(const struct gpio *gpio, unsigned int port,
           const struct gpio_config *config);
const struct gpio *gpio_get(unsigned int id);
int gpio_probe(const struct gpio *gpio);
 
#endif /* __SOF_DRIVERS_GPIO_H__ */