2ebab40eb7
The hda_jack_tbl entries are managed by snd_array for allowing multiple jacks. It's good per se, but the problem is that struct hda_jack_callback keeps the hda_jack_tbl pointer. Since snd_array doesn't preserve each pointer at resizing the array, we can't keep the original pointer but have to deduce the pointer at each time via snd_array_entry() instead. Actually, this resulted in the deference to the wrong pointer on codecs that have many pins such as CS4208. This patch replaces the pointer to the NID value as the search key. As an unexpected good side effect, this even simplifies the code, as only NID is needed in most cases. Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
96 lines
3 KiB
C
96 lines
3 KiB
C
/*
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* Jack-detection handling for HD-audio
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*
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* Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __SOUND_HDA_JACK_H
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#define __SOUND_HDA_JACK_H
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#include <linux/err.h>
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struct auto_pin_cfg;
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struct hda_jack_tbl;
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struct hda_jack_callback;
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typedef void (*hda_jack_callback_fn) (struct hda_codec *, struct hda_jack_callback *);
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struct hda_jack_callback {
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hda_nid_t nid;
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hda_jack_callback_fn func;
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unsigned int private_data; /* arbitrary data */
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struct hda_jack_callback *next;
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};
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struct hda_jack_tbl {
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hda_nid_t nid;
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unsigned char tag; /* unsol event tag */
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struct hda_jack_callback *callback;
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/* jack-detection stuff */
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unsigned int pin_sense; /* cached pin-sense value */
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unsigned int jack_detect:1; /* capable of jack-detection? */
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unsigned int jack_dirty:1; /* needs to update? */
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unsigned int phantom_jack:1; /* a fixed, always present port? */
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unsigned int block_report:1; /* in a transitional state - do not report to userspace */
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hda_nid_t gating_jack; /* valid when gating jack plugged */
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hda_nid_t gated_jack; /* gated is dependent on this jack */
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int type;
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struct snd_jack *jack;
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};
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struct hda_jack_tbl *
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snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
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struct hda_jack_tbl *
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snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
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void snd_hda_jack_tbl_clear(struct hda_codec *codec);
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void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
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int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid);
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struct hda_jack_callback *
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snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
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hda_jack_callback_fn cb);
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int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
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hda_nid_t gating_nid);
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u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
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/* the jack state returned from snd_hda_jack_detect_state() */
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enum {
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HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
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};
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int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
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/**
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* snd_hda_jack_detect - Detect the jack
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* @codec: the HDA codec
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* @nid: pin NID to check jack detection
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*/
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static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
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{
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return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
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}
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bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
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int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
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const char *name, bool phantom_jack);
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int snd_hda_jack_add_kctls(struct hda_codec *codec,
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const struct auto_pin_cfg *cfg);
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void snd_hda_jack_report_sync(struct hda_codec *codec);
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void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
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void snd_hda_jack_poll_all(struct hda_codec *codec);
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#endif /* __SOUND_HDA_JACK_H */
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