diff options
| -rw-r--r-- | include/sound/soc.h | 17 | ||||
| -rw-r--r-- | sound/soc/soc-core.c | 155 |
2 files changed, 166 insertions, 6 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index 9e593cf1440b..4a9195c5ef2d 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -583,6 +583,14 @@ struct snd_soc_prefix_map { const char *name_prefix; }; +struct snd_soc_aux_dev { + const char *name; /* Codec name */ + const char *codec_name; /* for multi-codec */ + + /* codec/machine specific init - e.g. add machine controls */ + int (*init)(struct snd_soc_dapm_context *dapm); +}; + /* SoC card */ struct snd_soc_card { const char *name; @@ -624,6 +632,15 @@ struct snd_soc_card { struct snd_soc_prefix_map *prefix_map; int num_prefixes; + /* + * optional auxiliary devices such as amplifiers or codecs with DAI + * link unused + */ + struct snd_soc_aux_dev *aux_dev; + int num_aux_devs; + struct snd_soc_pcm_runtime *rtd_aux; + int num_aux_rtd; + struct work_struct deferred_resume_work; /* lists of probed devices belonging to this card */ diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index c8d8dde7f4dd..a7670d5ac13d 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -986,6 +986,7 @@ static int soc_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct snd_soc_card *card = platform_get_drvdata(pdev); + struct snd_soc_codec *codec; int i; /* If the initialization of this soc device failed, there is no codec @@ -1064,8 +1065,7 @@ static int soc_suspend(struct device *dev) } /* suspend all CODECs */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_codec *codec = card->rtd[i].codec; + list_for_each_entry(codec, &card->codec_dev_list, card_list) { /* If there are paths active then the CODEC will be held with * bias _ON and should not be suspended. */ if (!codec->suspended && codec->driver->suspend) { @@ -1106,6 +1106,7 @@ static void soc_resume_deferred(struct work_struct *work) struct snd_soc_card *card = container_of(work, struct snd_soc_card, deferred_resume_work); struct platform_device *pdev = to_platform_device(card->dev); + struct snd_soc_codec *codec; int i; /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, @@ -1131,8 +1132,7 @@ static void soc_resume_deferred(struct work_struct *work) cpu_dai->driver->resume(cpu_dai); } - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_codec *codec = card->rtd[i].codec; + list_for_each_entry(codec, &card->codec_dev_list, card_list) { /* If the CODEC was idle over suspend then it will have been * left with bias OFF or STANDBY and suspended so we must now * resume. Otherwise the suspend was suppressed. @@ -1603,6 +1603,130 @@ static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec) } #endif +static int soc_probe_aux_dev(struct snd_soc_card *card, int num) +{ + struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; + struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; + struct snd_soc_codec *codec; + const char *temp; + int ret = 0; + + /* find CODEC from registered CODECs*/ + list_for_each_entry(codec, &codec_list, list) { + if (!strcmp(codec->name, aux_dev->codec_name)) { + if (codec->probed) { + dev_err(codec->dev, + "asoc: codec already probed"); + ret = -EBUSY; + goto out; + } + break; + } + } + + if (!try_module_get(codec->dev->driver->owner)) + return -ENODEV; + + codec->card = card; + codec->dapm.card = card; + + soc_set_name_prefix(card, codec); + if (codec->driver->probe) { + ret = codec->driver->probe(codec); + if (ret < 0) { + dev_err(codec->dev, "asoc: failed to probe CODEC"); + return ret; + } + } + + soc_init_codec_debugfs(codec); + + /* mark codec as probed and add to card codec list */ + codec->probed = 1; + list_add(&codec->card_list, &card->codec_dev_list); + list_add(&codec->dapm.list, &card->dapm_list); + + /* now that all clients have probed, initialise the DAI link */ + if (aux_dev->init) { + /* machine controls, routes and widgets are not prefixed */ + temp = codec->name_prefix; + codec->name_prefix = NULL; + ret = aux_dev->init(&codec->dapm); + if (ret < 0) { + dev_err(codec->dev, + "asoc: failed to init %s\n", aux_dev->name); + return ret; + } + codec->name_prefix = temp; + } + + /* Make sure all DAPM widgets are instantiated */ + snd_soc_dapm_new_widgets(&codec->dapm); + snd_soc_dapm_sync(&codec->dapm); + + /* register the rtd device */ + rtd->codec = codec; + rtd->card = card; + rtd->dev.parent = card->dev; + rtd->dev.release = rtd_release; + rtd->dev.init_name = aux_dev->name; + ret = device_register(&rtd->dev); + if (ret < 0) { + dev_err(codec->dev, + "asoc: failed to register aux runtime device %d\n", + ret); + return ret; + } + rtd->dev_registered = 1; + + /* add DAPM sysfs entries for this codec */ + ret = snd_soc_dapm_sys_add(&rtd->dev); + if (ret < 0) + dev_err(codec->dev, + "asoc: failed to add codec dapm sysfs entries\n"); + + /* add codec sysfs entries */ + ret = device_create_file(&rtd->dev, &dev_attr_codec_reg); + if (ret < 0) + dev_err(codec->dev, "asoc: failed to add codec sysfs files\n"); + +out: + return ret; +} + +static void soc_remove_aux_dev(struct snd_soc_card *card, int num) +{ + struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; + struct snd_soc_codec *codec = rtd->codec; + int err; + + /* unregister the rtd device */ + if (rtd->dev_registered) { + device_unregister(&rtd->dev); + rtd->dev_registered = 0; + } + + /* remove the CODEC */ + if (codec && codec->probed) { + if (codec->driver->remove) { + err = codec->driver->remove(codec); + if (err < 0) + dev_err(codec->dev, + "asoc: failed to remove %s\n", + codec->name); + } + + /* Make sure all DAPM widgets are freed */ + snd_soc_dapm_free(&codec->dapm); + + soc_cleanup_codec_debugfs(codec); + device_remove_file(&rtd->dev, &dev_attr_codec_reg); + codec->probed = 0; + list_del(&codec->card_list); + module_put(codec->dev->driver->owner); + } +} + static void snd_soc_instantiate_card(struct snd_soc_card *card) { struct platform_device *pdev = to_platform_device(card->dev); @@ -1657,6 +1781,15 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) } } + for (i = 0; i < card->num_aux_devs; i++) { + ret = soc_probe_aux_dev(card, i); + if (ret < 0) { + pr_err("asoc: failed to add auxiliary devices %s: %d\n", + card->name, ret); + goto probe_aux_dev_err; + } + } + snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), "%s", card->name); snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), @@ -1683,6 +1816,10 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) mutex_unlock(&card->mutex); return; +probe_aux_dev_err: + for (i = 0; i < card->num_aux_devs; i++) + soc_remove_aux_dev(card, i); + probe_dai_err: for (i = 0; i < card->num_links; i++) soc_remove_dai_link(card, i); @@ -1744,6 +1881,10 @@ static int soc_remove(struct platform_device *pdev) run_delayed_work(&rtd->delayed_work); } + /* remove auxiliary devices */ + for (i = 0; i < card->num_aux_devs; i++) + soc_remove_aux_dev(card, i); + /* remove and free each DAI */ for (i = 0; i < card->num_rtd; i++) soc_remove_dai_link(card, i); @@ -2946,10 +3087,12 @@ static int snd_soc_register_card(struct snd_soc_card *card) if (!card->name || !card->dev) return -EINVAL; - card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) * card->num_links, - GFP_KERNEL); + card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) * + (card->num_links + card->num_aux_devs), + GFP_KERNEL); if (card->rtd == NULL) return -ENOMEM; + card->rtd_aux = &card->rtd[card->num_links]; for (i = 0; i < card->num_links; i++) card->rtd[i].dai_link = &card->dai_link[i]; |