/* * Helper functions for jack-detection kcontrols * * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> * * This program 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. */ #include <linux/kernel.h> #include <linux/export.h> #include <sound/core.h> #include <sound/control.h> #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) { ucontrol->value.integer.value[0] = kcontrol->private_value; 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, }; static int get_available_index(struct snd_card *card, const char *name) { struct snd_ctl_elem_id sid; memset(&sid, 0, sizeof(sid)); sid.index = 0; sid.iface = SNDRV_CTL_ELEM_IFACE_CARD; strlcpy(sid.name, name, sizeof(sid.name)); while (snd_ctl_find_id(card, &sid)) { sid.index++; /* reset numid; otherwise snd_ctl_find_id() hits this again */ sid.numid = 0; } return sid.index; } static void jack_kctl_name_gen(char *name, const char *src_name, int size) { size_t count = strlen(src_name); bool need_cat = true; /* remove redundant " Jack" from src_name */ if (count >= 5) need_cat = strncmp(&src_name[count - 5], " Jack", 5) ? true : false; snprintf(name, size, need_cat ? "%s Jack" : "%s", src_name); } struct snd_kcontrol * snd_kctl_jack_new(const char *name, struct snd_card *card) { struct snd_kcontrol *kctl; kctl = snd_ctl_new1(&jack_detect_kctl, NULL); if (!kctl) return NULL; jack_kctl_name_gen(kctl->id.name, name, sizeof(kctl->id.name)); kctl->id.index = get_available_index(card, kctl->id.name); kctl->private_value = 0; return kctl; } void snd_kctl_jack_report(struct snd_card *card, struct snd_kcontrol *kctl, bool status) { if (kctl->private_value == status) return; kctl->private_value = status; snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); } ass='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/lib/bpf/bpf.h'> <input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='219189e764be35372c298bee6492fc4c870b6ffd'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&id=219189e764be35372c298bee6492fc4c870b6ffd'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?h=nds-private-remove&id=219189e764be35372c298bee6492fc4c870b6ffd'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/lib?h=nds-private-remove&id=219189e764be35372c298bee6492fc4c870b6ffd'>lib</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/lib/bpf?h=nds-private-remove&id=219189e764be35372c298bee6492fc4c870b6ffd'>bpf</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/lib/bpf/bpf.h?h=nds-private-remove&id=219189e764be35372c298bee6492fc4c870b6ffd'>bpf.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/lib/bpf/bpf.h?h=nds-private-remove&id=219189e764be35372c298bee6492fc4c870b6ffd&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>