[mirror_ubuntu-hirsute-kernel.git] / sound / aoa / aoa-gpio.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Apple Onboard Audio GPIO definitions
 *
 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
 */

#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
d6869352	1	/* SPDX-License-Identifier: GPL-2.0-only */
f3d9478b JB	2	/*
	3	* Apple Onboard Audio GPIO definitions
	4	*
	5	* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
f3d9478b JB	6	*/
	7
	8	#ifndef __AOA_GPIO_H
	9	#define __AOA_GPIO_H
	10	#include <linux/workqueue.h>
	11	#include <linux/mutex.h>
	12	#include <asm/prom.h>
	13
	14	typedef void (notify_func_t)(void data);
	15
	16	enum notify_type {
	17	AOA_NOTIFY_HEADPHONE,
	18	AOA_NOTIFY_LINE_IN,
	19	AOA_NOTIFY_LINE_OUT,
	20	};
	21
	22	struct gpio_runtime;
	23	struct gpio_methods {
	24	/* for initialisation/de-initialisation of the GPIO layer */
	25	void (init)(struct gpio_runtime rt);
	26	void (exit)(struct gpio_runtime rt);
	27
	28	/* turn off headphone, speakers, lineout */
	29	void (all_amps_off)(struct gpio_runtime rt);
	30	/* turn headphone, speakers, lineout back to previous setting */
	31	void (all_amps_restore)(struct gpio_runtime rt);
	32
	33	void (set_headphone)(struct gpio_runtime rt, int on);
	34	void (set_speakers)(struct gpio_runtime rt, int on);
	35	void (set_lineout)(struct gpio_runtime rt, int on);
5f17e79c	36	void (set_master)(struct gpio_runtime rt, int on);
f3d9478b JB	37
	38	int (get_headphone)(struct gpio_runtime rt);
	39	int (get_speakers)(struct gpio_runtime rt);
	40	int (get_lineout)(struct gpio_runtime rt);
5f17e79c	41	int (get_master)(struct gpio_runtime rt);
f3d9478b JB	42
	43	void (set_hw_reset)(struct gpio_runtime rt, int on);
	44
	45	/* use this to be notified of any events. The notification
	46	* function is passed the data, and is called in process
	47	* context by the use of schedule_work.
	48	* The interface for it is that setting a function to NULL
	49	* removes it, and they return 0 if the operation succeeded,
	50	* and -EBUSY if the notification is already assigned by
	51	* someone else. */
	52	int (set_notify)(struct gpio_runtime rt,
	53	enum notify_type type,
	54	notify_func_t notify,
	55	void *data);
	56	/* returns 0 if not plugged in, 1 if plugged in
	57	* or a negative error code */
	58	int (get_detect)(struct gpio_runtime rt,
	59	enum notify_type type);
	60	};
	61
	62	struct gpio_notification {
c4028958	63	struct delayed_work work;
f3d9478b JB	64	notify_func_t notify;
	65	void *data;
	66	void *gpio_private;
f3d9478b JB	67	struct mutex mutex;
	68	};
	69
	70	struct gpio_runtime {
	71	/* to be assigned by fabric */
	72	struct device_node *node;
	73	/* since everyone needs this pointer anyway... */
	74	struct gpio_methods *methods;
	75	/* to be used by the gpio implementation */
	76	int implementation_private;
	77	struct gpio_notification headphone_notify;
	78	struct gpio_notification line_in_notify;
	79	struct gpio_notification line_out_notify;
	80	};
	81
	82	#endif /* __AOA_GPIO_H */