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kernel add
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/*
* Jack-detection handling for HD-audio
*
* Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
*
* This driver 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.
*/
#ifndef __SOUND_HDA_JACK_H
#define __SOUND_HDA_JACK_H
#include <linux/err.h>
struct auto_pin_cfg;
struct hda_jack_tbl;
struct hda_jack_callback;
typedef void (*hda_jack_callback_fn) (struct hda_codec *, struct hda_jack_callback *);
struct hda_jack_callback {
hda_nid_t nid;
hda_jack_callback_fn func;
unsigned int private_data; /* arbitrary data */
struct hda_jack_callback *next;
};
struct hda_jack_tbl {
hda_nid_t nid;
unsigned char tag; /* unsol event tag */
struct hda_jack_callback *callback;
/* jack-detection stuff */
unsigned int pin_sense; /* cached pin-sense value */
unsigned int jack_detect:1; /* capable of jack-detection? */
unsigned int jack_dirty:1; /* needs to update? */
unsigned int phantom_jack:1; /* a fixed, always present port? */
unsigned int block_report:1; /* in a transitional state - do not report to userspace */
hda_nid_t gating_jack; /* valid when gating jack plugged */
hda_nid_t gated_jack; /* gated is dependent on this jack */
int type;
struct snd_jack *jack;
};
struct hda_jack_tbl *
snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
struct hda_jack_tbl *
snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
void snd_hda_jack_tbl_clear(struct hda_codec *codec);
void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid);
struct hda_jack_callback *
snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
hda_jack_callback_fn cb);
int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
hda_nid_t gating_nid);
u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
/* the jack state returned from snd_hda_jack_detect_state() */
enum {
HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
};
int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
/**
* snd_hda_jack_detect - Detect the jack
* @codec: the HDA codec
* @nid: pin NID to check jack detection
*/
static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
{
return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
}
bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
const char *name, bool phantom_jack);
int snd_hda_jack_add_kctls(struct hda_codec *codec,
const struct auto_pin_cfg *cfg);
void snd_hda_jack_report_sync(struct hda_codec *codec);
void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
void snd_hda_jack_poll_all(struct hda_codec *codec);
#endif /* __SOUND_HDA_JACK_H */
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