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*参照元 [#rd857104] #backlinks *説明 [#h4545bb2] -パス: [[linux-4.4.1/sound/soc/soc-core.c]] -FIXME: これは何？ --説明 **引数 [#md666b9c] -struct snd_soc_card *card -- --[[linux-4.4.1/snd_soc_card]] **返り値 [#oaab868e] -int -- **参考 [#h84ac2a9] *実装 [#xb1da611] /** * snd_soc_register_card - Register a card with the ASoC core * * @card: Card to register * */ int snd_soc_register_card(struct snd_soc_card *card) { int i, j, ret; if (!card->name || !card->dev) return -EINVAL; for (i = 0; i < card->num_links; i++) { struct snd_soc_dai_link *link = &card->dai_link[i]; - --[[linux-4.4.1/snd_soc_dai_link]] ret = snd_soc_init_multicodec(card, link); if (ret) { dev_err(card->dev, "ASoC: failed to init multicodec\n"); return ret; } - --[[linux-4.4.1/snd_soc_init_multicodec()]] --[[linux-4.4.1/dev_err()]] for (j = 0; j < link->num_codecs; j++) { /* * Codec must be specified by 1 of name or OF node, * not both or neither. */ if (!!link->codecs[j].name == !!link->codecs[j].of_node) { dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n", link->name); return -EINVAL; } /* Codec DAI name must be specified */ if (!link->codecs[j].dai_name) { dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n", link->name); return -EINVAL; } } /* * Platform may be specified by either name or OF node, but * can be left unspecified, and a dummy platform will be used. */ if (link->platform_name && link->platform_of_node) { dev_err(card->dev, "ASoC: Both platform name/of_node are set for %s\n", link->name); return -EINVAL; } /* * CPU device may be specified by either name or OF node, but * can be left unspecified, and will be matched based on DAI * name alone.. */ if (link->cpu_name && link->cpu_of_node) { dev_err(card->dev, "ASoC: Neither/both cpu name/of_node are set for %s\n", link->name); return -EINVAL; } /* * At least one of CPU DAI name or CPU device name/node must be * specified */ if (!link->cpu_dai_name && !(link->cpu_name || link->cpu_of_node)) { dev_err(card->dev, "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", link->name); return -EINVAL; } } dev_set_drvdata(card->dev, card); - --[[linux-4.4.1/dev_set_drvdata()]] snd_soc_initialize_card_lists(card); - --[[linux-4.4.1/snd_soc_initialize_card_lists()]] card->rtd = devm_kzalloc(card->dev, sizeof(struct snd_soc_pcm_runtime) * (card->num_links + card->num_aux_devs), GFP_KERNEL); if (card->rtd == NULL) return -ENOMEM; card->num_rtd = 0; card->rtd_aux = &card->rtd[card->num_links]; - --[[linux-4.4.1/devm_kzalloc()]] for (i = 0; i < card->num_links; i++) { card->rtd[i].card = card; card->rtd[i].dai_link = &card->dai_link[i]; card->rtd[i].codec_dais = devm_kzalloc(card->dev, sizeof(struct snd_soc_dai *) * (card->rtd[i].dai_link->num_codecs), GFP_KERNEL); if (card->rtd[i].codec_dais == NULL) return -ENOMEM; } for (i = 0; i < card->num_aux_devs; i++) card->rtd_aux[i].card = card; INIT_LIST_HEAD(&card->dapm_dirty); INIT_LIST_HEAD(&card->dobj_list); card->instantiated = 0; mutex_init(&card->mutex); mutex_init(&card->dapm_mutex); - --[[linux-4.4.1/INIT_LIST_HEAD()]] --[[linux-4.4.1/mutex_init()]] ret = snd_soc_instantiate_card(card); if (ret != 0) return ret; - --[[linux-4.4.1/snd_soc_instantiate_card()]] /* deactivate pins to sleep state */ for (i = 0; i < card->num_rtd; i++) { struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int j; - --[[linux-4.4.1/snd_soc_pcm_runtime]] --[[linux-4.4.1/snd_soc_dai]] for (j = 0; j < rtd->num_codecs; j++) { struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; if (!codec_dai->active) pinctrl_pm_select_sleep_state(codec_dai->dev); } - --[[linux-4.4.1/pinctrl_pm_select_sleep_state()]] if (!cpu_dai->active) pinctrl_pm_select_sleep_state(cpu_dai->dev); } return ret; } *コメント [#bdbdd691]
