cregit-Linux how code gets into the kernel

Release 4.8 sound/aoa/aoa-gpio.h

Directory: sound/aoa
 * Apple Onboard Audio GPIO definitions
 * Copyright 2006 Johannes Berg <>
 * GPL v2, can be found in COPYING.

#ifndef __AOA_GPIO_H

#define __AOA_GPIO_H
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <asm/prom.h>

typedef void (*notify_func_t)(void *data);

enum notify_type {

struct gpio_runtime;

struct gpio_methods {
	/* for initialisation/de-initialisation of the GPIO layer */
void (*init)(struct gpio_runtime *rt);
void (*exit)(struct gpio_runtime *rt);

	/* turn off headphone, speakers, lineout */
void (*all_amps_off)(struct gpio_runtime *rt);
	/* turn headphone, speakers, lineout back to previous setting */
void (*all_amps_restore)(struct gpio_runtime *rt);

void (*set_headphone)(struct gpio_runtime *rt, int on);
void (*set_speakers)(struct gpio_runtime *rt, int on);
void (*set_lineout)(struct gpio_runtime *rt, int on);
void (*set_master)(struct gpio_runtime *rt, int on);

int (*get_headphone)(struct gpio_runtime *rt);
int (*get_speakers)(struct gpio_runtime *rt);
int (*get_lineout)(struct gpio_runtime *rt);
int (*get_master)(struct gpio_runtime *rt);

void (*set_hw_reset)(struct gpio_runtime *rt, int on);

	/* use this to be notified of any events. The notification
         * function is passed the data, and is called in process
         * context by the use of schedule_work.
         * The interface for it is that setting a function to NULL
         * removes it, and they return 0 if the operation succeeded,
         * and -EBUSY if the notification is already assigned by
         * someone else. */
int (*set_notify)(struct gpio_runtime *rt,
			  enum notify_type type,
			  notify_func_t notify,
			  void *data);
	/* returns 0 if not plugged in, 1 if plugged in
         * or a negative error code */
int (*get_detect)(struct gpio_runtime *rt,
			  enum notify_type type);

struct gpio_notification {
struct delayed_work work;
notify_func_t notify;
void *data;
void *gpio_private;
struct mutex mutex;

struct gpio_runtime {
	/* to be assigned by fabric */
struct device_node *node;
	/* since everyone needs this pointer anyway... */
struct gpio_methods *methods;
	/* to be used by the gpio implementation */
int implementation_private;
struct gpio_notification headphone_notify;
struct gpio_notification line_in_notify;
struct gpio_notification line_out_notify;

#endif /* __AOA_GPIO_H */

Overall Contributors

johannes bergjohannes berg31798.75%266.67%
david howellsdavid howells41.25%133.33%
Directory: sound/aoa
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