[mirror_ubuntu-bionic-kernel.git] / include / sound / control.h

#ifndef __SOUND_CONTROL_H
#define __SOUND_CONTROL_H

/*
 *  Header file for control interface
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/wait.h>
#include <linux/nospec.h>
#include <sound/asound.h>

#define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data)

struct snd_kcontrol;
typedef int (snd_kcontrol_info_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_info * uinfo);
typedef int (snd_kcontrol_get_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol);
typedef int (snd_kcontrol_put_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol);
typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol,
				    int op_flag, /* SNDRV_CTL_TLV_OP_XXX */
				    unsigned int size,
				    unsigned int __user *tlv);

enum {
	SNDRV_CTL_TLV_OP_READ = 0,
	SNDRV_CTL_TLV_OP_WRITE = 1,
	SNDRV_CTL_TLV_OP_CMD = -1,
};

struct snd_kcontrol_new {
	snd_ctl_elem_iface_t iface;	/* interface identifier */
	unsigned int device;		/* device/client number */
	unsigned int subdevice;		/* subdevice (substream) number */
	const unsigned char *name;	/* ASCII name of item */
	unsigned int index;		/* index of item */
	unsigned int access;		/* access rights */
	unsigned int count;		/* count of same elements */
	snd_kcontrol_info_t *info;
	snd_kcontrol_get_t *get;
	snd_kcontrol_put_t *put;
	union {
		snd_kcontrol_tlv_rw_t *c;
		const unsigned int *p;
	} tlv;
	unsigned long private_value;
};

struct snd_kcontrol_volatile {
	struct snd_ctl_file *owner;	/* locked */
	unsigned int access;	/* access rights */
};

struct snd_kcontrol {
	struct list_head list;		/* list of controls */
	struct snd_ctl_elem_id id;
	unsigned int count;		/* count of same elements */
	snd_kcontrol_info_t *info;
	snd_kcontrol_get_t *get;
	snd_kcontrol_put_t *put;
	union {
		snd_kcontrol_tlv_rw_t *c;
		const unsigned int *p;
	} tlv;
	unsigned long private_value;
	void *private_data;
	void (*private_free)(struct snd_kcontrol *kcontrol);
	struct snd_kcontrol_volatile vd[0];	/* volatile data */
};

#define snd_kcontrol(n) list_entry(n, struct snd_kcontrol, list)

struct snd_kctl_event {
	struct list_head list;	/* list of events */
	struct snd_ctl_elem_id id;
	unsigned int mask;
};

#define snd_kctl_event(n) list_entry(n, struct snd_kctl_event, list)

struct pid;

enum {
	SND_CTL_SUBDEV_PCM,
	SND_CTL_SUBDEV_RAWMIDI,
	SND_CTL_SUBDEV_ITEMS,
};

struct snd_ctl_file {
	struct list_head list;		/* list of all control files */
	struct snd_card *card;
	struct pid *pid;
	int preferred_subdevice[SND_CTL_SUBDEV_ITEMS];
	wait_queue_head_t change_sleep;
	spinlock_t read_lock;
	struct fasync_struct *fasync;
	int subscribed;			/* read interface is activated */
	struct list_head events;	/* waiting events for read */
};

#define snd_ctl_file(n) list_entry(n, struct snd_ctl_file, list)

typedef int (*snd_kctl_ioctl_func_t) (struct snd_card * card,
				      struct snd_ctl_file * control,
				      unsigned int cmd, unsigned long arg);

void snd_ctl_notify(struct snd_card * card, unsigned int mask, struct snd_ctl_elem_id * id);

struct snd_kcontrol *snd_ctl_new1(const struct snd_kcontrol_new * kcontrolnew, void * private_data);
void snd_ctl_free_one(struct snd_kcontrol * kcontrol);
int snd_ctl_add(struct snd_card * card, struct snd_kcontrol * kcontrol);
int snd_ctl_remove(struct snd_card * card, struct snd_kcontrol * kcontrol);
int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol, bool add_on_replace);
int snd_ctl_remove_id(struct snd_card * card, struct snd_ctl_elem_id *id);
int snd_ctl_rename_id(struct snd_card * card, struct snd_ctl_elem_id *src_id, struct snd_ctl_elem_id *dst_id);
int snd_ctl_activate_id(struct snd_card *card, struct snd_ctl_elem_id *id,
			int active);
struct snd_kcontrol *snd_ctl_find_numid(struct snd_card * card, unsigned int numid);
struct snd_kcontrol *snd_ctl_find_id(struct snd_card * card, struct snd_ctl_elem_id *id);

int snd_ctl_create(struct snd_card *card);

int snd_ctl_register_ioctl(snd_kctl_ioctl_func_t fcn);
int snd_ctl_unregister_ioctl(snd_kctl_ioctl_func_t fcn);
#ifdef CONFIG_COMPAT
int snd_ctl_register_ioctl_compat(snd_kctl_ioctl_func_t fcn);
int snd_ctl_unregister_ioctl_compat(snd_kctl_ioctl_func_t fcn);
#else
#define snd_ctl_register_ioctl_compat(fcn)
#define snd_ctl_unregister_ioctl_compat(fcn)
#endif

int snd_ctl_get_preferred_subdevice(struct snd_card *card, int type);

static inline unsigned int snd_ctl_get_ioffnum(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
{
	unsigned int ioff = id->numid - kctl->id.numid;
	return array_index_nospec(ioff, kctl->count);
}

static inline unsigned int snd_ctl_get_ioffidx(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
{
	unsigned int ioff = id->index - kctl->id.index;
	return array_index_nospec(ioff, kctl->count);
}

static inline unsigned int snd_ctl_get_ioff(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id)
{
	if (id->numid) {
		return snd_ctl_get_ioffnum(kctl, id);
	} else {
		return snd_ctl_get_ioffidx(kctl, id);
	}
}

static inline struct snd_ctl_elem_id *snd_ctl_build_ioff(struct snd_ctl_elem_id *dst_id,
						    struct snd_kcontrol *src_kctl,
						    unsigned int offset)
{
	*dst_id = src_kctl->id;
	dst_id->index += offset;
	dst_id->numid += offset;
	return dst_id;
}

/*
 * Frequently used control callbacks/helpers
 */
int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_info *uinfo);
int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo);
int snd_ctl_enum_info(struct snd_ctl_elem_info *info, unsigned int channels,
		      unsigned int items, const char *const names[]);

/*
 * virtual master control
 */
struct snd_kcontrol *snd_ctl_make_virtual_master(char *name,
						 const unsigned int *tlv);
int _snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave,
		       unsigned int flags);
/* optional flags for slave */
#define SND_CTL_SLAVE_NEED_UPDATE	(1 << 0)

/**
 * snd_ctl_add_slave - Add a virtual slave control
 * @master: vmaster element
 * @slave: slave element to add
 *
 * Add a virtual slave control to the given master element created via
 * snd_ctl_create_virtual_master() beforehand.
 *
 * All slaves must be the same type (returning the same information
 * via info callback).  The function doesn't check it, so it's your
 * responsibility.
 *
 * Also, some additional limitations:
 * at most two channels,
 * logarithmic volume control (dB level) thus no linear volume,
 * master can only attenuate the volume without gain
 *
 * Return: Zero if successful or a negative error code.
 */
static inline int
snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave)
{
	return _snd_ctl_add_slave(master, slave, 0);
}

/**
 * snd_ctl_add_slave_uncached - Add a virtual slave control
 * @master: vmaster element
 * @slave: slave element to add
 *
 * Add a virtual slave control to the given master.
 * Unlike snd_ctl_add_slave(), the element added via this function
 * is supposed to have volatile values, and get callback is called
 * at each time queried from the master.
 *
 * When the control peeks the hardware values directly and the value
 * can be changed by other means than the put callback of the element,
 * this function should be used to keep the value always up-to-date.
 *
 * Return: Zero if successful or a negative error code.
 */
static inline int
snd_ctl_add_slave_uncached(struct snd_kcontrol *master,
			   struct snd_kcontrol *slave)
{
	return _snd_ctl_add_slave(master, slave, SND_CTL_SLAVE_NEED_UPDATE);
}

int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl,
			     void (*hook)(void *private_data, int),
			     void *private_data);
void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
#define snd_ctl_sync_vmaster_hook(kctl)	snd_ctl_sync_vmaster(kctl, true)
int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl,
				 int (*func)(struct snd_kcontrol *vslave,
					     struct snd_kcontrol *slave,
					     void *arg),
				 void *arg);

/*
 * Helper functions for jack-detection controls
 */
struct snd_kcontrol *
snd_kctl_jack_new(const char *name, struct snd_card *card);
void snd_kctl_jack_report(struct snd_card *card,
			  struct snd_kcontrol *kctl, bool status);

#endif	/* __SOUND_CONTROL_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __SOUND_CONTROL_H
	2	#define __SOUND_CONTROL_H
	3
	4	/*
	5	* Header file for control interface
c1017a4c	6	* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	*/
	24
b69339ba	25	#include <linux/wait.h>
e2ff7e1d	26	#include <linux/nospec.h>
1da177e4 LT	27	#include <sound/asound.h>
1da177e4 LT	28
1da177e4 LT	29	#define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data)
1da177e4 LT	30
82e9bae6 TI	31	struct snd_kcontrol;
	32	typedef int (snd_kcontrol_info_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_info * uinfo);
	33	typedef int (snd_kcontrol_get_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol);
	34	typedef int (snd_kcontrol_put_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol);
8aa9b586	35	typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol,
0cea76f3	36	int op_flag, /* SNDRV_CTL_TLV_OP_XXX */
8aa9b586 JK	37	unsigned int size,
	38	unsigned int __user *tlv);
	39
0cea76f3 TI	40	enum {
	41	SNDRV_CTL_TLV_OP_READ = 0,
	42	SNDRV_CTL_TLV_OP_WRITE = 1,
	43	SNDRV_CTL_TLV_OP_CMD = -1,
	44	};
1da177e4	45
82e9bae6	46	struct snd_kcontrol_new {
1da177e4 LT	47	snd_ctl_elem_iface_t iface; /* interface identifier */
	48	unsigned int device; /* device/client number */
	49	unsigned int subdevice; /* subdevice (substream) number */
5ac2ba94	50	const unsigned char name; / ASCII name of item */
1da177e4 LT	51	unsigned int index; /* index of item */
	52	unsigned int access; /* access rights */
	53	unsigned int count; /* count of same elements */
	54	snd_kcontrol_info_t *info;
	55	snd_kcontrol_get_t *get;
	56	snd_kcontrol_put_t *put;
8aa9b586 JK	57	union {
8aa9b586 JK	58	snd_kcontrol_tlv_rw_t *c;
0cb29ea0	59	const unsigned int *p;
8aa9b586	60	} tlv;
1da177e4	61	unsigned long private_value;
82e9bae6	62	};
1da177e4	63
82e9bae6 TI	64	struct snd_kcontrol_volatile {
82e9bae6 TI	65	struct snd_ctl_file owner; / locked */
1da177e4	66	unsigned int access; /* access rights */
82e9bae6	67	};
1da177e4	68
82e9bae6	69	struct snd_kcontrol {
1da177e4	70	struct list_head list; /* list of controls */
82e9bae6	71	struct snd_ctl_elem_id id;
1da177e4 LT	72	unsigned int count; /* count of same elements */
	73	snd_kcontrol_info_t *info;
	74	snd_kcontrol_get_t *get;
	75	snd_kcontrol_put_t *put;
8aa9b586 JK	76	union {
8aa9b586 JK	77	snd_kcontrol_tlv_rw_t *c;
0cb29ea0	78	const unsigned int *p;
8aa9b586	79	} tlv;
1da177e4 LT	80	unsigned long private_value;
1da177e4 LT	81	void *private_data;
82e9bae6 TI	82	void (private_free)(struct snd_kcontrol kcontrol);
82e9bae6 TI	83	struct snd_kcontrol_volatile vd[0]; /* volatile data */
1da177e4 LT	84	};
1da177e4 LT	85
82e9bae6	86	#define snd_kcontrol(n) list_entry(n, struct snd_kcontrol, list)
1da177e4	87
82e9bae6	88	struct snd_kctl_event {
1da177e4	89	struct list_head list; /* list of events */
82e9bae6	90	struct snd_ctl_elem_id id;
1da177e4	91	unsigned int mask;
82e9bae6	92	};
1da177e4	93
82e9bae6	94	#define snd_kctl_event(n) list_entry(n, struct snd_kctl_event, list)
1da177e4	95
25d27ede CL	96	struct pid;
25d27ede CL	97
23c18d4b TI	98	enum {
	99	SND_CTL_SUBDEV_PCM,
	100	SND_CTL_SUBDEV_RAWMIDI,
	101	SND_CTL_SUBDEV_ITEMS,
	102	};
	103
82e9bae6	104	struct snd_ctl_file {
1da177e4	105	struct list_head list; /* list of all control files */
82e9bae6	106	struct snd_card *card;
25d27ede	107	struct pid *pid;
23c18d4b	108	int preferred_subdevice[SND_CTL_SUBDEV_ITEMS];
1da177e4 LT	109	wait_queue_head_t change_sleep;
	110	spinlock_t read_lock;
	111	struct fasync_struct *fasync;
	112	int subscribed; /* read interface is activated */
	113	struct list_head events; /* waiting events for read */
	114	};
	115
82e9bae6	116	#define snd_ctl_file(n) list_entry(n, struct snd_ctl_file, list)
1da177e4	117
82e9bae6 TI	118	typedef int (snd_kctl_ioctl_func_t) (struct snd_card card,
	119	struct snd_ctl_file * control,
	120	unsigned int cmd, unsigned long arg);
1da177e4	121
82e9bae6	122	void snd_ctl_notify(struct snd_card * card, unsigned int mask, struct snd_ctl_elem_id * id);
1da177e4	123
82e9bae6 TI	124	struct snd_kcontrol snd_ctl_new1(const struct snd_kcontrol_new kcontrolnew, void * private_data);
	125	void snd_ctl_free_one(struct snd_kcontrol * kcontrol);
	126	int snd_ctl_add(struct snd_card * card, struct snd_kcontrol * kcontrol);
	127	int snd_ctl_remove(struct snd_card * card, struct snd_kcontrol * kcontrol);
66b5b972	128	int snd_ctl_replace(struct snd_card card, struct snd_kcontrol kcontrol, bool add_on_replace);
82e9bae6 TI	129	int snd_ctl_remove_id(struct snd_card * card, struct snd_ctl_elem_id *id);
82e9bae6 TI	130	int snd_ctl_rename_id(struct snd_card * card, struct snd_ctl_elem_id src_id, struct snd_ctl_elem_id dst_id);
3cbdd753 TI	131	int snd_ctl_activate_id(struct snd_card card, struct snd_ctl_elem_id id,
3cbdd753 TI	132	int active);
82e9bae6 TI	133	struct snd_kcontrol snd_ctl_find_numid(struct snd_card card, unsigned int numid);
82e9bae6 TI	134	struct snd_kcontrol snd_ctl_find_id(struct snd_card card, struct snd_ctl_elem_id *id);
1da177e4	135
82e9bae6	136	int snd_ctl_create(struct snd_card *card);
1da177e4 LT	137
	138	int snd_ctl_register_ioctl(snd_kctl_ioctl_func_t fcn);
	139	int snd_ctl_unregister_ioctl(snd_kctl_ioctl_func_t fcn);
	140	#ifdef CONFIG_COMPAT
	141	int snd_ctl_register_ioctl_compat(snd_kctl_ioctl_func_t fcn);
	142	int snd_ctl_unregister_ioctl_compat(snd_kctl_ioctl_func_t fcn);
	143	#else
	144	#define snd_ctl_register_ioctl_compat(fcn)
	145	#define snd_ctl_unregister_ioctl_compat(fcn)
	146	#endif
	147
23c18d4b TI	148	int snd_ctl_get_preferred_subdevice(struct snd_card *card, int type);
23c18d4b TI	149
82e9bae6	150	static inline unsigned int snd_ctl_get_ioffnum(struct snd_kcontrol kctl, struct snd_ctl_elem_id id)
1da177e4	151	{
e2ff7e1d TI	152	unsigned int ioff = id->numid - kctl->id.numid;
e2ff7e1d TI	153	return array_index_nospec(ioff, kctl->count);
1da177e4 LT	154	}
1da177e4 LT	155
82e9bae6	156	static inline unsigned int snd_ctl_get_ioffidx(struct snd_kcontrol kctl, struct snd_ctl_elem_id id)
1da177e4	157	{
e2ff7e1d TI	158	unsigned int ioff = id->index - kctl->id.index;
e2ff7e1d TI	159	return array_index_nospec(ioff, kctl->count);
1da177e4 LT	160	}
1da177e4 LT	161
82e9bae6	162	static inline unsigned int snd_ctl_get_ioff(struct snd_kcontrol kctl, struct snd_ctl_elem_id id)
1da177e4 LT	163	{
	164	if (id->numid) {
	165	return snd_ctl_get_ioffnum(kctl, id);
	166	} else {
	167	return snd_ctl_get_ioffidx(kctl, id);
	168	}
	169	}
	170
82e9bae6 TI	171	static inline struct snd_ctl_elem_id snd_ctl_build_ioff(struct snd_ctl_elem_id dst_id,
82e9bae6 TI	172	struct snd_kcontrol *src_kctl,
1da177e4 LT	173	unsigned int offset)
	174	{
	175	*dst_id = src_kctl->id;
	176	dst_id->index += offset;
	177	dst_id->numid += offset;
	178	return dst_id;
	179	}
	180
b9ed4f2b	181	/*
9600732b	182	* Frequently used control callbacks/helpers
b9ed4f2b TI	183	*/
	184	int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
	185	struct snd_ctl_elem_info *uinfo);
	186	int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
	187	struct snd_ctl_elem_info *uinfo);
9600732b CL	188	int snd_ctl_enum_info(struct snd_ctl_elem_info *info, unsigned int channels,
9600732b CL	189	unsigned int items, const char *const names[]);
b9ed4f2b	190
e922b002 TI	191	/*
	192	* virtual master control
	193	*/
	194	struct snd_kcontrol snd_ctl_make_virtual_master(char name,
	195	const unsigned int *tlv);
f5b1db63 TI	196	int _snd_ctl_add_slave(struct snd_kcontrol master, struct snd_kcontrol slave,
	197	unsigned int flags);
	198	/* optional flags for slave */
	199	#define SND_CTL_SLAVE_NEED_UPDATE (1 << 0)
	200
79c7cdd5 TI	201	/**
	202	* snd_ctl_add_slave - Add a virtual slave control
	203	* @master: vmaster element
	204	* @slave: slave element to add
	205	*
	206	* Add a virtual slave control to the given master element created via
	207	* snd_ctl_create_virtual_master() beforehand.
79c7cdd5 TI	208	*
79c7cdd5 TI	209	* All slaves must be the same type (returning the same information
25985edc	210	* via info callback). The function doesn't check it, so it's your
79c7cdd5 TI	211	* responsibility.
	212	*
	213	* Also, some additional limitations:
	214	* at most two channels,
	215	* logarithmic volume control (dB level) thus no linear volume,
	216	* master can only attenuate the volume without gain
eb7c06e8 YB	217	*
eb7c06e8 YB	218	* Return: Zero if successful or a negative error code.
79c7cdd5	219	*/
f5b1db63 TI	220	static inline int
	221	snd_ctl_add_slave(struct snd_kcontrol master, struct snd_kcontrol slave)
	222	{
	223	return _snd_ctl_add_slave(master, slave, 0);
	224	}
	225
79c7cdd5 TI	226	/**
	227	* snd_ctl_add_slave_uncached - Add a virtual slave control
	228	* @master: vmaster element
	229	* @slave: slave element to add
	230	*
	231	* Add a virtual slave control to the given master.
	232	* Unlike snd_ctl_add_slave(), the element added via this function
	233	* is supposed to have volatile values, and get callback is called
1a6ab46f	234	* at each time queried from the master.
79c7cdd5 TI	235	*
	236	* When the control peeks the hardware values directly and the value
	237	* can be changed by other means than the put callback of the element,
	238	* this function should be used to keep the value always up-to-date.
eb7c06e8 YB	239	*
eb7c06e8 YB	240	* Return: Zero if successful or a negative error code.
79c7cdd5	241	*/
f5b1db63 TI	242	static inline int
	243	snd_ctl_add_slave_uncached(struct snd_kcontrol *master,
	244	struct snd_kcontrol *slave)
	245	{
	246	return _snd_ctl_add_slave(master, slave, SND_CTL_SLAVE_NEED_UPDATE);
	247	}
	248
2ad787e9 TI	249	int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl,
	250	void (hook)(void private_data, int),
	251	void *private_data);
1ca2f2ec TI	252	void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
1ca2f2ec TI	253	#define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true)
a91d6612	254	int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl,
d6c0615f TI	255	int (func)(struct snd_kcontrol vslave,
	256	struct snd_kcontrol *slave,
	257	void *arg),
a91d6612	258	void *arg);
2ad787e9	259
35be544a TI	260	/*
	261	* Helper functions for jack-detection controls
	262	*/
	263	struct snd_kcontrol *
2ba2dfa1	264	snd_kctl_jack_new(const char name, struct snd_card card);
35be544a TI	265	void snd_kctl_jack_report(struct snd_card *card,
	266	struct snd_kcontrol *kctl, bool status);
	267
1da177e4	268	#endif /* __SOUND_CONTROL_H */