/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Jack-detection handling for HD-audio
 *
 * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
 */

#ifndef __SOUND_HDA_JACK_H
#define __SOUND_HDA_JACK_H

#include <linux/err.h>
#include <sound/jack.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;
        int dev_id;
        hda_jack_callback_fn func;
        unsigned int private_data;      /* arbitrary data */
        unsigned int unsol_res;         /* unsolicited event bits */
        struct hda_jack_tbl *jack;      /* associated jack entry */
        struct hda_jack_callback *next;
};

struct hda_jack_tbl {
        hda_nid_t nid;
        int dev_id;
        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 */
        hda_nid_t key_report_jack;      /* key reports to this jack */
        int type;
        int button_state;
        struct snd_jack *jack;
};

struct hda_jack_keymap {
        enum snd_jack_types type;
        int key;
};

struct hda_jack_tbl *
snd_hda_jack_tbl_get_mst(struct hda_codec *codec, hda_nid_t nid, int dev_id);

/**
 * snd_hda_jack_tbl_get - query the jack-table entry for the given NID
 * @codec: the HDA codec
 * @nid: pin NID to refer to
 */
static inline struct hda_jack_tbl *
snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
{
        return snd_hda_jack_tbl_get_mst(codec, nid, 0);
}

struct hda_jack_tbl *
snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec,
                              unsigned char tag, int dev_id);

void snd_hda_jack_tbl_disconnect(struct hda_codec *codec);
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,
                               int dev_id);

struct hda_jack_callback *
snd_hda_jack_detect_enable_callback_mst(struct hda_codec *codec, hda_nid_t nid,
                                        int dev_id, hda_jack_callback_fn func);

/**
 * snd_hda_jack_detect_enable_callback - enable the jack-detection
 * @codec: the HDA codec
 * @nid: pin NID to enable
 * @cb: callback function to register
 *
 * In the case of error, the return value will be a pointer embedded with
 * errno.  Check and handle the return value appropriately with standard
 * macros such as @IS_ERR() and @PTR_ERR().
 */
static inline struct hda_jack_callback *
snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
                                    hda_jack_callback_fn cb)
{
        return snd_hda_jack_detect_enable_callback_mst(codec, nid, 0, cb);
}

int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
                                 hda_nid_t gating_nid);

int snd_hda_jack_bind_keymap(struct hda_codec *codec, hda_nid_t key_nid,
                             const struct hda_jack_keymap *keymap,
                             hda_nid_t jack_nid);

void snd_hda_jack_set_button_state(struct hda_codec *codec, hda_nid_t jack_nid,
                                   int button_state);

u32 snd_hda_jack_pin_sense(struct hda_codec *codec, hda_nid_t nid, int dev_id);

/* 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_mst(struct hda_codec *codec, hda_nid_t nid,
                                  int dev_id);

/**
 * snd_hda_jack_detect_state - query pin Presence Detect status
 * @codec: the CODEC to sense
 * @nid: the pin NID to sense
 *
 * Query and return the pin's Presence Detect status, as either
 * HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT or HDA_JACK_PHANTOM.
 */
static inline int
snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid)
{
        return snd_hda_jack_detect_state_mst(codec, nid, 0);
}

/**
 * snd_hda_jack_detect_mst - Detect the jack
 * @codec: the HDA codec
 * @nid: pin NID to check jack detection
 * @dev_id: pin device entry id
 */
static inline bool
snd_hda_jack_detect_mst(struct hda_codec *codec, hda_nid_t nid, int dev_id)
{
        return snd_hda_jack_detect_state_mst(codec, nid, dev_id) !=
                        HDA_JACK_NOT_PRESENT;
}

/**
 * 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_mst(codec, nid, 0);
}

bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);

int snd_hda_jack_add_kctl_mst(struct hda_codec *codec, hda_nid_t nid,
                              int dev_id, const char *name, bool phantom_jack,
                              int type, const struct hda_jack_keymap *keymap);

/**
 * snd_hda_jack_add_kctl - Add a kctl for the given pin
 * @codec: the HDA codec
 * @nid: pin NID to assign
 * @name: string name for the jack
 * @phantom_jack: flag to deal as a phantom jack
 * @type: jack type bits to be reported, 0 for guessing from pincfg
 * @keymap: optional jack / key mapping
 *
 * This assigns a jack-detection kctl to the given pin.  The kcontrol
 * will have the given name and index.
 */
static inline int
snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
                      const char *name, bool phantom_jack,
                      int type, const struct hda_jack_keymap *keymap)
{
        return snd_hda_jack_add_kctl_mst(codec, nid, 0,
                                         name, phantom_jack, type, keymap);
}

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 */