ALSA: Jack: handle jack embedded kcontrol creating within ctljack
This patch adds a static method get_available_index() to allocate the index of new jack kcontrols and also adds jack_kctl_name_gen() which is used to ensure compatibility with jack naming by removing " Jack" from some incorrectly passed names. Signed-off-by: Jie Yang <yang.jie@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -252,7 +252,7 @@ void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
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* Helper functions for jack-detection controls
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*/
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struct snd_kcontrol *
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snd_kctl_jack_new(const char *name, int idx, void *private_data);
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snd_kctl_jack_new(const char *name, void *private_data, struct snd_card *card);
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void snd_kctl_jack_report(struct snd_card *card,
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struct snd_kcontrol *kctl, bool status);
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@ -31,15 +31,46 @@ static struct snd_kcontrol_new jack_detect_kctl = {
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.get = jack_detect_kctl_get,
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};
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static int get_available_index(struct snd_card *card, const char *name)
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{
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struct snd_ctl_elem_id sid;
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memset(&sid, 0, sizeof(sid));
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sid.index = 0;
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sid.iface = SNDRV_CTL_ELEM_IFACE_CARD;
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strlcpy(sid.name, name, sizeof(sid.name));
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while (snd_ctl_find_id(card, &sid))
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sid.index++;
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return sid.index;
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}
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static void jack_kctl_name_gen(char *name, const char *src_name, int size)
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{
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size_t count = strlen(src_name);
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bool need_cat = true;
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/* remove redundant " Jack" from src_name */
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if (count >= 5)
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need_cat = strncmp(&src_name[count - 5], " Jack", 5) ? true : false;
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snprintf(name, size, need_cat ? "%s Jack" : "%s", src_name);
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}
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struct snd_kcontrol *
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snd_kctl_jack_new(const char *name, int idx, void *private_data)
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snd_kctl_jack_new(const char *name, void *private_data, struct snd_card *card)
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{
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struct snd_kcontrol *kctl;
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kctl = snd_ctl_new1(&jack_detect_kctl, private_data);
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if (!kctl)
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return NULL;
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snprintf(kctl->id.name, sizeof(kctl->id.name), "%s Jack", name);
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kctl->id.index = idx;
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jack_kctl_name_gen(kctl->id.name, name, sizeof(kctl->id.name));
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kctl->id.index = get_available_index(card, name);
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kctl->private_value = 0;
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return kctl;
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}
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@ -135,7 +135,7 @@ static struct snd_jack_kctl * snd_jack_kctl_new(struct snd_card *card, const cha
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struct snd_jack_kctl *jack_kctl;
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int err;
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kctl = snd_kctl_jack_new(name, 0, card);
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kctl = snd_kctl_jack_new(name, card, card);
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if (!kctl)
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return NULL;
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@ -402,7 +402,7 @@ static int __snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
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return 0;
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if (jack->kctl)
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return 0; /* already created */
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kctl = snd_kctl_jack_new(name, idx, codec);
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kctl = snd_kctl_jack_new(name, codec, codec->card);
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if (!kctl)
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return -ENOMEM;
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err = snd_hda_ctl_add(codec, nid, kctl);
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