blob: e6dd8aab6b74784cc936666b6916429c8afbce98 [file] [log] [blame]
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "cras_types.h"
struct mixer_name;
int gpio_switch_open(const char *pathname);
int gpio_switch_read(int fd, void *buf, size_t n_bytes);
int gpio_switch_eviocgbit(int fd, void *buf, size_t n_bytes);
int gpio_switch_eviocgsw(int fd, void *bits, size_t n_bytes);
/* sys_input_get_device_name:
* Returns the heap-allocated device name of a /dev/input/event*
* pathname. Caller is responsible for releasing.
char *sys_input_get_device_name(const char *path);
/* List for each callback function.
* Args:
* dev_path - Full path to the GPIO device.
* dev_name - The name of the GPIO device.
* arg - The argument passed to gpio_switch_list_for_each.
* Returns:
* 0 to continue searching, non-zero otherwise.
typedef int (*gpio_switch_list_callback)(const char *dev_path,
const char *dev_name, void *arg);
/* Execute the given callback on each GPIO device.
* Args:
* callback - The callback to execute.
* arg - An argument to pass to the callback.
void gpio_switch_list_for_each(gpio_switch_list_callback callback, void *arg);