diff options
Diffstat (limited to 'sound/soc/soc-core.c')
| -rw-r--r-- | sound/soc/soc-core.c | 821 |
1 files changed, 164 insertions, 657 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index b194be09e74d..e44267f66216 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -44,7 +44,6 @@ #define NAME_SIZE 32 -static DEFINE_MUTEX(pcm_mutex); static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); #ifdef CONFIG_DEBUG_FS @@ -58,7 +57,7 @@ static LIST_HEAD(dai_list); static LIST_HEAD(platform_list); static LIST_HEAD(codec_list); -static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); +int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); /* * This is a timeout to do a DAPM powerdown after a stream is closed(). @@ -485,552 +484,6 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec) } #endif -static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - int ret; - - if (!codec_dai->driver->symmetric_rates && - !cpu_dai->driver->symmetric_rates && - !rtd->dai_link->symmetric_rates) - return 0; - - /* This can happen if multiple streams are starting simultaneously - - * the second can need to get its constraints before the first has - * picked a rate. Complain and allow the application to carry on. - */ - if (!rtd->rate) { - dev_warn(&rtd->dev, - "Not enforcing symmetric_rates due to race\n"); - return 0; - } - - dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n", rtd->rate); - - ret = snd_pcm_hw_constraint_minmax(substream->runtime, - SNDRV_PCM_HW_PARAM_RATE, - rtd->rate, rtd->rate); - if (ret < 0) { - dev_err(&rtd->dev, - "Unable to apply rate symmetry constraint: %d\n", ret); - return ret; - } - - return 0; -} - -/* - * Called by ALSA when a PCM substream is opened, the runtime->hw record is - * then initialized and any private data can be allocated. This also calls - * startup for the cpu DAI, platform, machine and codec DAI. - */ -static int soc_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; - struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; - int ret = 0; - - mutex_lock(&pcm_mutex); - - /* startup the audio subsystem */ - if (cpu_dai->driver->ops->startup) { - ret = cpu_dai->driver->ops->startup(substream, cpu_dai); - if (ret < 0) { - printk(KERN_ERR "asoc: can't open interface %s\n", - cpu_dai->name); - goto out; - } - } - - if (platform->driver->ops && platform->driver->ops->open) { - ret = platform->driver->ops->open(substream); - if (ret < 0) { - printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); - goto platform_err; - } - } - - if (codec_dai->driver->ops->startup) { - ret = codec_dai->driver->ops->startup(substream, codec_dai); - if (ret < 0) { - printk(KERN_ERR "asoc: can't open codec %s\n", - codec_dai->name); - goto codec_dai_err; - } - } - - if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { - ret = rtd->dai_link->ops->startup(substream); - if (ret < 0) { - printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name); - goto machine_err; - } - } - - /* Check that the codec and cpu DAIs are compatible */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - runtime->hw.rate_min = - max(codec_dai_drv->playback.rate_min, - cpu_dai_drv->playback.rate_min); - runtime->hw.rate_max = - min(codec_dai_drv->playback.rate_max, - cpu_dai_drv->playback.rate_max); - runtime->hw.channels_min = - max(codec_dai_drv->playback.channels_min, - cpu_dai_drv->playback.channels_min); - runtime->hw.channels_max = - min(codec_dai_drv->playback.channels_max, - cpu_dai_drv->playback.channels_max); - runtime->hw.formats = - codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats; - runtime->hw.rates = - codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates; - if (codec_dai_drv->playback.rates - & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) - runtime->hw.rates |= cpu_dai_drv->playback.rates; - if (cpu_dai_drv->playback.rates - & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) - runtime->hw.rates |= codec_dai_drv->playback.rates; - } else { - runtime->hw.rate_min = - max(codec_dai_drv->capture.rate_min, - cpu_dai_drv->capture.rate_min); - runtime->hw.rate_max = - min(codec_dai_drv->capture.rate_max, - cpu_dai_drv->capture.rate_max); - runtime->hw.channels_min = - max(codec_dai_drv->capture.channels_min, - cpu_dai_drv->capture.channels_min); - runtime->hw.channels_max = - min(codec_dai_drv->capture.channels_max, - cpu_dai_drv->capture.channels_max); - runtime->hw.formats = - codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats; - runtime->hw.rates = - codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates; - if (codec_dai_drv->capture.rates - & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) - runtime->hw.rates |= cpu_dai_drv->capture.rates; - if (cpu_dai_drv->capture.rates - & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) - runtime->hw.rates |= codec_dai_drv->capture.rates; - } - - ret = -EINVAL; - snd_pcm_limit_hw_rates(runtime); - if (!runtime->hw.rates) { - printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", - codec_dai->name, cpu_dai->name); - goto config_err; - } - if (!runtime->hw.formats) { - printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", - codec_dai->name, cpu_dai->name); - goto config_err; - } - if (!runtime->hw.channels_min || !runtime->hw.channels_max || - runtime->hw.channels_min > runtime->hw.channels_max) { - printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", - codec_dai->name, cpu_dai->name); - goto config_err; - } - - /* Symmetry only applies if we've already got an active stream. */ - if (cpu_dai->active || codec_dai->active) { - ret = soc_pcm_apply_symmetry(substream); - if (ret != 0) - goto config_err; - } - - pr_debug("asoc: %s <-> %s info:\n", - codec_dai->name, cpu_dai->name); - pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); - pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, - runtime->hw.channels_max); - pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, - runtime->hw.rate_max); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - cpu_dai->playback_active++; - codec_dai->playback_active++; - } else { - cpu_dai->capture_active++; - codec_dai->capture_active++; - } - cpu_dai->active++; - codec_dai->active++; - rtd->codec->active++; - mutex_unlock(&pcm_mutex); - return 0; - -config_err: - if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) - rtd->dai_link->ops->shutdown(substream); - -machine_err: - if (codec_dai->driver->ops->shutdown) - codec_dai->driver->ops->shutdown(substream, codec_dai); - -codec_dai_err: - if (platform->driver->ops && platform->driver->ops->close) - platform->driver->ops->close(substream); - -platform_err: - if (cpu_dai->driver->ops->shutdown) - cpu_dai->driver->ops->shutdown(substream, cpu_dai); -out: - mutex_unlock(&pcm_mutex); - return ret; -} - -/* - * Power down the audio subsystem pmdown_time msecs after close is called. - * This is to ensure there are no pops or clicks in between any music tracks - * due to DAPM power cycling. - */ -static void close_delayed_work(struct work_struct *work) -{ - struct snd_soc_pcm_runtime *rtd = - container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); - struct snd_soc_dai *codec_dai = rtd->codec_dai; - - mutex_lock(&pcm_mutex); - - pr_debug("pop wq checking: %s status: %s waiting: %s\n", - codec_dai->driver->playback.stream_name, - codec_dai->playback_active ? "active" : "inactive", - codec_dai->pop_wait ? "yes" : "no"); - - /* are we waiting on this codec DAI stream */ - if (codec_dai->pop_wait == 1) { - codec_dai->pop_wait = 0; - snd_soc_dapm_stream_event(rtd, - codec_dai->driver->playback.stream_name, - SND_SOC_DAPM_STREAM_STOP); - } - - mutex_unlock(&pcm_mutex); -} - -/* - * Called by ALSA when a PCM substream is closed. Private data can be - * freed here. The cpu DAI, codec DAI, machine and platform are also - * shutdown. - */ -static int soc_codec_close(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - struct snd_soc_codec *codec = rtd->codec; - - mutex_lock(&pcm_mutex); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - cpu_dai->playback_active--; - codec_dai->playback_active--; - } else { - cpu_dai->capture_active--; - codec_dai->capture_active--; - } - - cpu_dai->active--; - codec_dai->active--; - codec->active--; - - /* Muting the DAC suppresses artifacts caused during digital - * shutdown, for example from stopping clocks. - */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - snd_soc_dai_digital_mute(codec_dai, 1); - - if (cpu_dai->driver->ops->shutdown) - cpu_dai->driver->ops->shutdown(substream, cpu_dai); - - if (codec_dai->driver->ops->shutdown) - codec_dai->driver->ops->shutdown(substream, codec_dai); - - if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) - rtd->dai_link->ops->shutdown(substream); - - if (platform->driver->ops && platform->driver->ops->close) - platform->driver->ops->close(substream); - cpu_dai->runtime = NULL; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - /* start delayed pop wq here for playback streams */ - codec_dai->pop_wait = 1; - schedule_delayed_work(&rtd->delayed_work, - msecs_to_jiffies(rtd->pmdown_time)); - } else { - /* capture streams can be powered down now */ - snd_soc_dapm_stream_event(rtd, - codec_dai->driver->capture.stream_name, - SND_SOC_DAPM_STREAM_STOP); - } - - mutex_unlock(&pcm_mutex); - return 0; -} - -/* - * Called by ALSA when the PCM substream is prepared, can set format, sample - * rate, etc. This function is non atomic and can be called multiple times, - * it can refer to the runtime info. - */ -static int soc_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - int ret = 0; - - mutex_lock(&pcm_mutex); - - if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { - ret = rtd->dai_link->ops->prepare(substream); - if (ret < 0) { - printk(KERN_ERR "asoc: machine prepare error\n"); - goto out; - } - } - - if (platform->driver->ops && platform->driver->ops->prepare) { - ret = platform->driver->ops->prepare(substream); - if (ret < 0) { - printk(KERN_ERR "asoc: platform prepare error\n"); - goto out; - } - } - - if (codec_dai->driver->ops->prepare) { - ret = codec_dai->driver->ops->prepare(substream, codec_dai); - if (ret < 0) { - printk(KERN_ERR "asoc: codec DAI prepare error\n"); - goto out; - } - } - - if (cpu_dai->driver->ops->prepare) { - ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); - if (ret < 0) { - printk(KERN_ERR "asoc: cpu DAI prepare error\n"); - goto out; - } - } - - /* cancel any delayed stream shutdown that is pending */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && - codec_dai->pop_wait) { - codec_dai->pop_wait = 0; - cancel_delayed_work(&rtd->delayed_work); - } - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - snd_soc_dapm_stream_event(rtd, - codec_dai->driver->playback.stream_name, - SND_SOC_DAPM_STREAM_START); - else - snd_soc_dapm_stream_event(rtd, - codec_dai->driver->capture.stream_name, - SND_SOC_DAPM_STREAM_START); - - snd_soc_dai_digital_mute(codec_dai, 0); - -out: - mutex_unlock(&pcm_mutex); - return ret; -} - -/* - * Called by ALSA when the hardware params are set by application. This - * function can also be called multiple times and can allocate buffers - * (using snd_pcm_lib_* ). It's non-atomic. - */ -static int soc_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - int ret = 0; - - mutex_lock(&pcm_mutex); - - if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { - ret = rtd->dai_link->ops->hw_params(substream, params); - if (ret < 0) { - printk(KERN_ERR "asoc: machine hw_params failed\n"); - goto out; - } - } - - if (codec_dai->driver->ops->hw_params) { - ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); - if (ret < 0) { - printk(KERN_ERR "asoc: can't set codec %s hw params\n", - codec_dai->name); - goto codec_err; - } - } - - if (cpu_dai->driver->ops->hw_params) { - ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); - if (ret < 0) { - printk(KERN_ERR "asoc: interface %s hw params failed\n", - cpu_dai->name); - goto interface_err; - } - } - - if (platform->driver->ops && platform->driver->ops->hw_params) { - ret = platform->driver->ops->hw_params(substream, params); - if (ret < 0) { - printk(KERN_ERR "asoc: platform %s hw params failed\n", - platform->name); - goto platform_err; - } - } - - rtd->rate = params_rate(params); - -out: - mutex_unlock(&pcm_mutex); - return ret; - -platform_err: - if (cpu_dai->driver->ops->hw_free) - cpu_dai->driver->ops->hw_free(substream, cpu_dai); - -interface_err: - if (codec_dai->driver->ops->hw_free) - codec_dai->driver->ops->hw_free(substream, codec_dai); - -codec_err: - if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) - rtd->dai_link->ops->hw_free(substream); - - mutex_unlock(&pcm_mutex); - return ret; -} - -/* - * Frees resources allocated by hw_params, can be called multiple times - */ -static int soc_pcm_hw_free(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - struct snd_soc_codec *codec = rtd->codec; - - mutex_lock(&pcm_mutex); - - /* apply codec digital mute */ - if (!codec->active) - snd_soc_dai_digital_mute(codec_dai, 1); - - /* free any machine hw params */ - if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) - rtd->dai_link->ops->hw_free(substream); - - /* free any DMA resources */ - if (platform->driver->ops && platform->driver->ops->hw_free) - platform->driver->ops->hw_free(substream); - - /* now free hw params for the DAIs */ - if (codec_dai->driver->ops->hw_free) - codec_dai->driver->ops->hw_free(substream, codec_dai); - - if (cpu_dai->driver->ops->hw_free) - cpu_dai->driver->ops->hw_free(substream, cpu_dai); - - mutex_unlock(&pcm_mutex); - return 0; -} - -static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - int ret; - - if (codec_dai->driver->ops->trigger) { - ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); - if (ret < 0) - return ret; - } - - if (platform->driver->ops && platform->driver->ops->trigger) { - ret = platform->driver->ops->trigger(substream, cmd); - if (ret < 0) - return ret; - } - - if (cpu_dai->driver->ops->trigger) { - ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); - if (ret < 0) - return ret; - } - return 0; -} - -/* - * soc level wrapper for pointer callback - * If cpu_dai, codec_dai, platform driver has the delay callback, than - * the runtime->delay will be updated accordingly. - */ -static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_uframes_t offset = 0; - snd_pcm_sframes_t delay = 0; - - if (platform->driver->ops && platform->driver->ops->pointer) - offset = platform->driver->ops->pointer(substream); - - if (cpu_dai->driver->ops->delay) - delay += cpu_dai->driver->ops->delay(substream, cpu_dai); - - if (codec_dai->driver->ops->delay) - delay += codec_dai->driver->ops->delay(substream, codec_dai); - - if (platform->driver->delay) - delay += platform->driver->delay(substream, codec_dai); - - runtime->delay = delay; - - return offset; -} - -/* ASoC PCM operations */ -static struct snd_pcm_ops soc_pcm_ops = { - .open = soc_pcm_open, - .close = soc_codec_close, - .hw_params = soc_pcm_hw_params, - .hw_free = soc_pcm_hw_free, - .prepare = soc_pcm_prepare, - .trigger = soc_pcm_trigger, - .pointer = soc_pcm_pointer, -}; - #ifdef CONFIG_PM_SLEEP /* powers down audio subsystem for suspend */ int snd_soc_suspend(struct device *dev) @@ -1256,7 +709,7 @@ static void soc_resume_deferred(struct work_struct *work) int snd_soc_resume(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); - int i; + int i, ac97_control = 0; /* AC97 devices might have other drivers hanging off them so * need to resume immediately. Other drivers don't have that @@ -1265,14 +718,15 @@ int snd_soc_resume(struct device *dev) */ for (i = 0; i < card->num_rtd; i++) { struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; - if (cpu_dai->driver->ac97_control) { - dev_dbg(dev, "Resuming AC97 immediately\n"); - soc_resume_deferred(&card->deferred_resume_work); - } else { - dev_dbg(dev, "Scheduling resume work\n"); - if (!schedule_work(&card->deferred_resume_work)) - dev_err(dev, "resume work item may be lost\n"); - } + ac97_control |= cpu_dai->driver->ac97_control; + } + if (ac97_control) { + dev_dbg(dev, "Resuming AC97 immediately\n"); + soc_resume_deferred(&card->deferred_resume_work); + } else { + dev_dbg(dev, "Scheduling resume work\n"); + if (!schedule_work(&card->deferred_resume_work)) + dev_err(dev, "resume work item may be lost\n"); } return 0; @@ -1393,7 +847,7 @@ static void soc_remove_codec(struct snd_soc_codec *codec) module_put(codec->dev->driver->owner); } -static void soc_remove_dai_link(struct snd_soc_card *card, int num) +static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order) { struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_codec *codec = rtd->codec; @@ -1410,7 +864,8 @@ static void soc_remove_dai_link(struct snd_soc_card *card, int num) } /* remove the CODEC DAI */ - if (codec_dai && codec_dai->probed) { + if (codec_dai && codec_dai->probed && + codec_dai->driver->remove_order == order) { if (codec_dai->driver->remove) { err = codec_dai->driver->remove(codec_dai); if (err < 0) @@ -1421,7 +876,8 @@ static void soc_remove_dai_link(struct snd_soc_card *card, int num) } /* remove the platform */ - if (platform && platform->probed) { + if (platform && platform->probed && + platform->driver->remove_order == order) { if (platform->driver->remove) { err = platform->driver->remove(platform); if (err < 0) @@ -1433,11 +889,13 @@ static void soc_remove_dai_link(struct snd_soc_card *card, int num) } /* remove the CODEC */ - if (codec && codec->probed) + if (codec && codec->probed && + codec->driver->remove_order == order) soc_remove_codec(codec); /* remove the cpu_dai */ - if (cpu_dai && cpu_dai->probed) { + if (cpu_dai && cpu_dai->probed && + cpu_dai->driver->remove_order == order) { if (cpu_dai->driver->remove) { err = cpu_dai->driver->remove(cpu_dai); if (err < 0) @@ -1451,11 +909,13 @@ static void soc_remove_dai_link(struct snd_soc_card *card, int num) static void soc_remove_dai_links(struct snd_soc_card *card) { - int i; - - for (i = 0; i < card->num_rtd; i++) - soc_remove_dai_link(card, i); + int dai, order; + for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; + order++) { + for (dai = 0; dai < card->num_rtd; dai++) + soc_remove_dai_link(card, dai, order); + } card->num_rtd = 0; } @@ -1526,6 +986,52 @@ err_probe: return ret; } +static int soc_probe_platform(struct snd_soc_card *card, + struct snd_soc_platform *platform) +{ + int ret = 0; + const struct snd_soc_platform_driver *driver = platform->driver; + + platform->card = card; + platform->dapm.card = card; + + if (!try_module_get(platform->dev->driver->owner)) + return -ENODEV; + + if (driver->dapm_widgets) + snd_soc_dapm_new_controls(&platform->dapm, + driver->dapm_widgets, driver->num_dapm_widgets); + + if (driver->probe) { + ret = driver->probe(platform); + if (ret < 0) { + dev_err(platform->dev, + "asoc: failed to probe platform %s: %d\n", + platform->name, ret); + goto err_probe; + } + } + + if (driver->controls) + snd_soc_add_platform_controls(platform, driver->controls, + driver->num_controls); + if (driver->dapm_routes) + snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes, + driver->num_dapm_routes); + + /* mark platform as probed and add to card platform list */ + platform->probed = 1; + list_add(&platform->card_list, &card->platform_dev_list); + list_add(&platform->dapm.list, &card->dapm_list); + + return 0; + +err_probe: + module_put(platform->dev->driver->owner); + + return ret; +} + static void rtd_release(struct device *dev) {} static int soc_post_component_init(struct snd_soc_card *card, @@ -1572,6 +1078,7 @@ static int soc_post_component_init(struct snd_soc_card *card, rtd->dev.parent = card->dev; rtd->dev.release = rtd_release; rtd->dev.init_name = name; + mutex_init(&rtd->pcm_mutex); ret = device_register(&rtd->dev); if (ret < 0) { dev_err(card->dev, @@ -1596,7 +1103,7 @@ static int soc_post_component_init(struct snd_soc_card *card, return 0; } -static int soc_probe_dai_link(struct snd_soc_card *card, int num) +static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order) { struct snd_soc_dai_link *dai_link = &card->dai_link[num]; struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; @@ -1605,7 +1112,8 @@ static int soc_probe_dai_link(struct snd_soc_card *card, int num) struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai; int ret; - dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num); + dev_dbg(card->dev, "probe %s dai link %d late %d\n", + card->name, num, order); /* config components */ codec_dai->codec = codec; @@ -1617,7 +1125,8 @@ static int soc_probe_dai_link(struct snd_soc_card *card, int num) rtd->pmdown_time = pmdown_time; /* probe the cpu_dai */ - if (!cpu_dai->probed) { + if (!cpu_dai->probed && + cpu_dai->driver->probe_order == order) { if (!try_module_get(cpu_dai->dev->driver->owner)) return -ENODEV; @@ -1636,33 +1145,23 @@ static int soc_probe_dai_link(struct snd_soc_card *card, int num) } /* probe the CODEC */ - if (!codec->probed) { + if (!codec->probed && + codec->driver->probe_order == order) { ret = soc_probe_codec(card, codec); if (ret < 0) return ret; } /* probe the platform */ - if (!platform->probed) { - if (!try_module_get(platform->dev->driver->owner)) - return -ENODEV; - - if (platform->driver->probe) { - ret = platform->driver->probe(platform); - if (ret < 0) { - printk(KERN_ERR "asoc: failed to probe platform %s\n", - platform->name); - module_put(platform->dev->driver->owner); - return ret; - } - } - /* mark platform as probed and add to card platform list */ - platform->probed = 1; - list_add(&platform->card_list, &card->platform_dev_list); + if (!platform->probed && + platform->driver->probe_order == order) { + ret = soc_probe_platform(card, platform); + if (ret < 0) + return ret; } /* probe the CODEC DAI */ - if (!codec_dai->probed) { + if (!codec_dai->probed && codec_dai->driver->probe_order == order) { if (codec_dai->driver->probe) { ret = codec_dai->driver->probe(codec_dai); if (ret < 0) { @@ -1677,8 +1176,9 @@ static int soc_probe_dai_link(struct snd_soc_card *card, int num) list_add(&codec_dai->card_list, &card->dai_dev_list); } - /* DAPM dai link stream work */ - INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); + /* complete DAI probe during last probe */ + if (order != SND_SOC_COMP_ORDER_LAST) + return 0; ret = soc_post_component_init(card, codec, num, 0); if (ret) @@ -1817,7 +1317,7 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) struct snd_soc_codec *codec; struct snd_soc_codec_conf *codec_conf; enum snd_soc_compress_type compress_type; - int ret, i; + int ret, i, order; mutex_lock(&card->mutex); @@ -1895,12 +1395,16 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) goto card_probe_error; } - for (i = 0; i < card->num_links; i++) { - ret = soc_probe_dai_link(card, i); - if (ret < 0) { - pr_err("asoc: failed to instantiate card %s: %d\n", + /* early DAI link probe */ + for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; + order++) { + for (i = 0; i < card->num_links; i++) { + ret = soc_probe_dai_link(card, i, order); + if (ret < 0) { + pr_err("asoc: failed to instantiate card %s: %d\n", card->name, ret); - goto probe_dai_err; + goto probe_dai_err; + } } } @@ -2096,67 +1600,6 @@ static struct platform_driver soc_driver = { .remove = soc_remove, }; -/* create a new pcm */ -static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) -{ - struct snd_soc_codec *codec = rtd->codec; - struct snd_soc_platform *platform = rtd->platform; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_pcm *pcm; - char new_name[64]; - int ret = 0, playback = 0, capture = 0; - - /* check client and interface hw capabilities */ - snprintf(new_name, sizeof(new_name), "%s %s-%d", - rtd->dai_link->stream_name, codec_dai->name, num); - - if (codec_dai->driver->playback.channels_min) - playback = 1; - if (codec_dai->driver->capture.channels_min) - capture = 1; - - dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name); - ret = snd_pcm_new(rtd->card->snd_card, new_name, - num, playback, capture, &pcm); - if (ret < 0) { - printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); - return ret; - } - - rtd->pcm = pcm; - pcm->private_data = rtd; - if (platform->driver->ops) { - soc_pcm_ops.mmap = platform->driver->ops->mmap; - soc_pcm_ops.pointer = platform->driver->ops->pointer; - soc_pcm_ops.ioctl = platform->driver->ops->ioctl; - soc_pcm_ops.copy = platform->driver->ops->copy; - soc_pcm_ops.silence = platform->driver->ops->silence; - soc_pcm_ops.ack = platform->driver->ops->ack; - soc_pcm_ops.page = platform->driver->ops->page; - } - - if (playback) - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); - - if (capture) - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); - - if (platform->driver->pcm_new) { - ret = platform->driver->pcm_new(rtd->card->snd_card, - codec_dai, pcm); - if (ret < 0) { - pr_err("asoc: platform pcm constructor failed\n"); - return ret; - } - } - - pcm->private_free = platform->driver->pcm_free; - printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, - cpu_dai->name); - return ret; -} - /** * snd_soc_codec_volatile_register: Report if a register is volatile. * @@ -2211,6 +1654,38 @@ int snd_soc_codec_writable_register(struct snd_soc_codec *codec, } EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register); +int snd_soc_platform_read(struct snd_soc_platform *platform, + unsigned int reg) +{ + unsigned int ret; + + if (!platform->driver->read) { + dev_err(platform->dev, "platform has no read back\n"); + return -1; + } + + ret = platform->driver->read(platform, reg); + dev_dbg(platform->dev, "read %x => %x\n", reg, ret); + trace_snd_soc_preg_read(platform, reg, ret); + + return ret; +} +EXPORT_SYMBOL_GPL(snd_soc_platform_read); + +int snd_soc_platform_write(struct snd_soc_platform *platform, + unsigned int reg, unsigned int val) +{ + if (!platform->driver->write) { + dev_err(platform->dev, "platform has no write back\n"); + return -1; + } + + dev_dbg(platform->dev, "write %x = %x\n", reg, val); + trace_snd_soc_preg_write(platform, reg, val); + return platform->driver->write(platform, reg, val); +} +EXPORT_SYMBOL_GPL(snd_soc_platform_write); + /** * snd_soc_new_ac97_codec - initailise AC97 device * @codec: audio codec @@ -2323,7 +1798,7 @@ int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, return ret; old = ret; - new = (old & ~mask) | value; + new = (old & ~mask) | (value & mask); change = old != new; if (change) { ret = snd_soc_write(codec, reg, new); @@ -2490,6 +1965,36 @@ int snd_soc_add_controls(struct snd_soc_codec *codec, EXPORT_SYMBOL_GPL(snd_soc_add_controls); /** + * snd_soc_add_platform_controls - add an array of controls to a platform. + * Convienience function to add a list of controls. + * + * @platform: platform to add controls to + * @controls: array of controls to add + * @num_controls: number of elements in the array + * + * Return 0 for success, else error. + */ +int snd_soc_add_platform_controls(struct snd_soc_platform *platform, + const struct snd_kcontrol_new *controls, int num_controls) +{ + struct snd_card *card = platform->card->snd_card; + int err, i; + + for (i = 0; i < num_controls; i++) { + const struct snd_kcontrol_new *control = &controls[i]; + err = snd_ctl_add(card, snd_soc_cnew(control, platform, + control->name, NULL)); + if (err < 0) { + dev_err(platform->dev, "Failed to add %s %d\n",control->name, err); + return err; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls); + +/** * snd_soc_info_enum_double - enumerated double mixer info callback * @kcontrol: mixer control * @uinfo: control element information @@ -3633,6 +3138,8 @@ int snd_soc_register_platform(struct device *dev, platform->dev = dev; platform->driver = platform_drv; + platform->dapm.dev = dev; + platform->dapm.platform = platform; mutex_lock(&client_mutex); list_add(&platform->list, &platform_list); |
