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linux/sound/pci/hda/hda_jack.h

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ALSA: hda - Cache the jack-detection value Introduce a table containing the pins and their jack-detection states for avoiding the unnecessary verbs to check the pin status at each time. When the unsol event is enabled via snd_hda_jack_detect_enable(), it automatically adds the given NID to the table. Then the driver supposes that the codec driver will set the dirty flag appropariately when an unsolicited event is invoked for that pin. The behavior for reading other pins that aren't registered in the table doesn't change. Only the pins assigned to the table are cached, so far. In near futre, this table can be extended to use the central place for the unsolicited events of all pins, etc, and eventually include the jack-detect kcontrols that replace the current input-jack stuff. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 04:12:46 +08:00
/*
* 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
struct hda_jack_tbl {
hda_nid_t nid;
unsigned int pin_sense; /* cached pin-sense value */
ALSA: hda - Create jack-detection kcontrols Create kcontrols for pin jack-detections, which work similarly like jack-input layer. Each control will notify when the jack is plugged or unplugged, and also user can read the value at any time via the normal control API. The control elements are created with iface=CARD, so that they won't appear in the mixer apps. So far, only the pins that enabled the jack-detection are registered. For covering all pins, the transition of the common unsol-tag handling would be needed. Stay tuned. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 06:03:22 +08:00
unsigned int jack_cachable:1; /* can be updated via unsol events */
ALSA: hda - Cache the jack-detection value Introduce a table containing the pins and their jack-detection states for avoiding the unnecessary verbs to check the pin status at each time. When the unsol event is enabled via snd_hda_jack_detect_enable(), it automatically adds the given NID to the table. Then the driver supposes that the codec driver will set the dirty flag appropariately when an unsolicited event is invoked for that pin. The behavior for reading other pins that aren't registered in the table doesn't change. Only the pins assigned to the table are cached, so far. In near futre, this table can be extended to use the central place for the unsolicited events of all pins, etc, and eventually include the jack-detect kcontrols that replace the current input-jack stuff. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 04:12:46 +08:00
unsigned int jack_dirty:1; /* needs to update? */
ALSA: hda - Create jack-detection kcontrols Create kcontrols for pin jack-detections, which work similarly like jack-input layer. Each control will notify when the jack is plugged or unplugged, and also user can read the value at any time via the normal control API. The control elements are created with iface=CARD, so that they won't appear in the mixer apps. So far, only the pins that enabled the jack-detection are registered. For covering all pins, the transition of the common unsol-tag handling would be needed. Stay tuned. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 06:03:22 +08:00
unsigned int need_notify:1; /* to be notified? */
struct snd_kcontrol *kctl; /* assigned kctl for jack-detection */
ALSA: hda - Cache the jack-detection value Introduce a table containing the pins and their jack-detection states for avoiding the unnecessary verbs to check the pin status at each time. When the unsol event is enabled via snd_hda_jack_detect_enable(), it automatically adds the given NID to the table. Then the driver supposes that the codec driver will set the dirty flag appropariately when an unsolicited event is invoked for that pin. The behavior for reading other pins that aren't registered in the table doesn't change. Only the pins assigned to the table are cached, so far. In near futre, this table can be extended to use the central place for the unsolicited events of all pins, etc, and eventually include the jack-detect kcontrols that replace the current input-jack stuff. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 04:12:46 +08:00
};
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_new(struct hda_codec *codec, hda_nid_t nid);
void snd_hda_jack_tbl_clear(struct hda_codec *codec);
/**
* snd_hda_jack_set_dirty - set the dirty flag for the given jack-entry
*
* Call this function when a pin-state may change, e.g. when the hardware
* notifies via an unsolicited event.
*/
static inline void snd_hda_jack_set_dirty(struct hda_codec *codec,
hda_nid_t nid)
{
struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
if (jack)
jack->jack_dirty = 1;
}
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,
unsigned int tag);
u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
{
if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
return false;
if (!codec->ignore_misc_bit &&
(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
AC_DEFCFG_MISC_NO_PRESENCE))
return false;
if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
return false;
return true;
}
ALSA: hda - Create jack-detection kcontrols Create kcontrols for pin jack-detections, which work similarly like jack-input layer. Each control will notify when the jack is plugged or unplugged, and also user can read the value at any time via the normal control API. The control elements are created with iface=CARD, so that they won't appear in the mixer apps. So far, only the pins that enabled the jack-detection are registered. For covering all pins, the transition of the common unsol-tag handling would be needed. Stay tuned. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 06:03:22 +08:00
int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
const char *name, int idx);
int snd_hda_jack_add_kctls(struct hda_codec *codec,
const struct auto_pin_cfg *cfg);
void snd_hda_jack_report(struct hda_codec *codec, hda_nid_t nid);
void snd_hda_jack_report_sync(struct hda_codec *codec);
ALSA: hda - Cache the jack-detection value Introduce a table containing the pins and their jack-detection states for avoiding the unnecessary verbs to check the pin status at each time. When the unsol event is enabled via snd_hda_jack_detect_enable(), it automatically adds the given NID to the table. Then the driver supposes that the codec driver will set the dirty flag appropariately when an unsolicited event is invoked for that pin. The behavior for reading other pins that aren't registered in the table doesn't change. Only the pins assigned to the table are cached, so far. In near futre, this table can be extended to use the central place for the unsolicited events of all pins, etc, and eventually include the jack-detect kcontrols that replace the current input-jack stuff. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-10-28 04:12:46 +08:00
#endif /* __SOUND_HDA_JACK_H */
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