[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / aoa / aoa-gpio.h

/*
 * Apple Onboard Audio GPIO definitions
 *
 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
 *
 * 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 {
	AOA_NOTIFY_HEADPHONE,
	AOA_NOTIFY_LINE_IN,
	AOA_NOTIFY_LINE_OUT,
};

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 */
Commit	Line	Data
f3d9478b JB	1	/*
	2	* Apple Onboard Audio GPIO definitions
	3	*
	4	* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
	5	*
	6	* GPL v2, can be found in COPYING.
	7	*/
	8
	9	#ifndef __AOA_GPIO_H
	10	#define __AOA_GPIO_H
	11	#include <linux/workqueue.h>
	12	#include <linux/mutex.h>
	13	#include <asm/prom.h>
	14
	15	typedef void (notify_func_t)(void data);
	16
	17	enum notify_type {
	18	AOA_NOTIFY_HEADPHONE,
	19	AOA_NOTIFY_LINE_IN,
	20	AOA_NOTIFY_LINE_OUT,
	21	};
	22
	23	struct gpio_runtime;
	24	struct gpio_methods {
	25	/* for initialisation/de-initialisation of the GPIO layer */
	26	void (init)(struct gpio_runtime rt);
	27	void (exit)(struct gpio_runtime rt);
	28
	29	/* turn off headphone, speakers, lineout */
	30	void (all_amps_off)(struct gpio_runtime rt);
	31	/* turn headphone, speakers, lineout back to previous setting */
	32	void (all_amps_restore)(struct gpio_runtime rt);
	33
	34	void (set_headphone)(struct gpio_runtime rt, int on);
	35	void (set_speakers)(struct gpio_runtime rt, int on);
	36	void (set_lineout)(struct gpio_runtime rt, int on);
5f17e79c	37	void (set_master)(struct gpio_runtime rt, int on);
f3d9478b JB	38
	39	int (get_headphone)(struct gpio_runtime rt);
	40	int (get_speakers)(struct gpio_runtime rt);
	41	int (get_lineout)(struct gpio_runtime rt);
5f17e79c	42	int (get_master)(struct gpio_runtime rt);
f3d9478b JB	43
	44	void (set_hw_reset)(struct gpio_runtime rt, int on);
	45
	46	/* use this to be notified of any events. The notification
	47	* function is passed the data, and is called in process
	48	* context by the use of schedule_work.
	49	* The interface for it is that setting a function to NULL
	50	* removes it, and they return 0 if the operation succeeded,
	51	* and -EBUSY if the notification is already assigned by
	52	* someone else. */
	53	int (set_notify)(struct gpio_runtime rt,
	54	enum notify_type type,
	55	notify_func_t notify,
	56	void *data);
	57	/* returns 0 if not plugged in, 1 if plugged in
	58	* or a negative error code */
	59	int (get_detect)(struct gpio_runtime rt,
	60	enum notify_type type);
	61	};
	62
	63	struct gpio_notification {
c4028958	64	struct delayed_work work;
f3d9478b JB	65	notify_func_t notify;
	66	void *data;
	67	void *gpio_private;
f3d9478b JB	68	struct mutex mutex;
	69	};
	70
	71	struct gpio_runtime {
	72	/* to be assigned by fabric */
	73	struct device_node *node;
	74	/* since everyone needs this pointer anyway... */
	75	struct gpio_methods *methods;
	76	/* to be used by the gpio implementation */
	77	int implementation_private;
	78	struct gpio_notification headphone_notify;
	79	struct gpio_notification line_in_notify;
	80	struct gpio_notification line_out_notify;
	81	};
	82
	83	#endif /* __AOA_GPIO_H */