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author | Takashi Iwai <tiwai@suse.de> | 2011-11-02 07:36:06 (GMT) |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2011-11-16 10:14:03 (GMT) |
commit | 35be544af367170a9c6bf63adcf9d0cb2d569dbb (patch) | |
tree | 7bcd2dabde3b3f950916962edb5c601482c00335 /sound/pci/hda/hda_jack.c | |
parent | 3a93897ea37cbb8277f8a4232c12c0c18168a7db (diff) | |
download | linux-fsl-qoriq-35be544af367170a9c6bf63adcf9d0cb2d569dbb.tar.xz |
ALSA: Introduce common helper functions for jack-detection control
Now move the helper function for creating and reporting the jack-detection
to the common place. The driver that needs this functionality should
select CONFIG_SND_KCTL_JACK kconfig.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_jack.c')
-rw-r--r-- | sound/pci/hda/hda_jack.c | 56 |
1 files changed, 8 insertions, 48 deletions
diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c index 8829d5c..a2ab52b 100644 --- a/sound/pci/hda/hda_jack.c +++ b/sound/pci/hda/hda_jack.c @@ -97,12 +97,8 @@ static void jack_detect_update(struct hda_codec *codec, struct hda_jack_tbl *jack) { if (jack->jack_dirty || !jack->jack_detect) { - unsigned int val = read_pin_sense(codec, jack->nid); + jack->pin_sense = read_pin_sense(codec, jack->nid); jack->jack_dirty = 0; - if (val != jack->pin_sense) { - jack->need_notify = 1; - jack->pin_sense = val; - } } } @@ -142,6 +138,8 @@ u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid) } EXPORT_SYMBOL_HDA(snd_hda_pin_sense); +#define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE) + /** * snd_hda_jack_detect - query pin Presence Detect status * @codec: the CODEC to sense @@ -152,7 +150,7 @@ EXPORT_SYMBOL_HDA(snd_hda_pin_sense); int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid) { u32 sense = snd_hda_pin_sense(codec, nid); - return !!(sense & AC_PINSENSE_PRESENCE); + return get_jack_plug_state(sense); } EXPORT_SYMBOL_HDA(snd_hda_jack_detect); @@ -176,58 +174,23 @@ int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid, } EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable); -/* queue the notification when needed */ -static void jack_detect_report(struct hda_codec *codec, - struct hda_jack_tbl *jack) -{ - jack_detect_update(codec, jack); - if (jack->need_notify) { - snd_ctl_notify(codec->bus->card, SNDRV_CTL_EVENT_MASK_VALUE, - &jack->kctl->id); - jack->need_notify = 0; - } -} - /** * snd_hda_jack_report_sync - sync the states of all jacks and report if changed */ void snd_hda_jack_report_sync(struct hda_codec *codec) { struct hda_jack_tbl *jack = codec->jacktbl.list; - int i; + int i, state; for (i = 0; i < codec->jacktbl.used; i++, jack++) if (jack->nid) { jack_detect_update(codec, jack); - jack_detect_report(codec, jack); + state = get_jack_plug_state(jack->pin_sense); + snd_kctl_jack_notify(codec->bus->card, jack->kctl, state); } } EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync); -/* - * jack-detection kcontrols - */ - -#define jack_detect_kctl_info snd_ctl_boolean_mono_info - -static int jack_detect_kctl_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct hda_codec *codec = snd_kcontrol_chip(kcontrol); - hda_nid_t nid = kcontrol->private_value; - - ucontrol->value.integer.value[0] = snd_hda_jack_detect(codec, nid); - return 0; -} - -static struct snd_kcontrol_new jack_detect_kctl = { - /* name is filled later */ - .iface = SNDRV_CTL_ELEM_IFACE_CARD, - .access = SNDRV_CTL_ELEM_ACCESS_READ, - .info = jack_detect_kctl_info, - .get = jack_detect_kctl_get, -}; - /** * snd_hda_jack_add_kctl - Add a kctl for the given pin * @@ -245,12 +208,9 @@ int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid, return 0; if (jack->kctl) return 0; /* already created */ - kctl = snd_ctl_new1(&jack_detect_kctl, codec); + kctl = snd_kctl_jack_new(name, idx, codec); if (!kctl) return -ENOMEM; - snprintf(kctl->id.name, sizeof(kctl->id.name), "%s Jack", name); - kctl->id.index = idx; - kctl->private_value = nid; if (snd_hda_ctl_add(codec, nid, kctl) < 0) return -ENOMEM; jack->kctl = kctl; |