diff options
Diffstat (limited to 'sound/soc/soc-pcm.c')
-rw-r--r-- | sound/soc/soc-pcm.c | 209 |
1 files changed, 137 insertions, 72 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 2879c883eebc..0ad8dcacd2f3 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -19,6 +19,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/workqueue.h> #include <sound/core.h> @@ -27,17 +28,13 @@ #include <sound/soc.h> #include <sound/initval.h> -static DEFINE_MUTEX(pcm_mutex); - -static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) +static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, + struct snd_soc_dai *soc_dai) { 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 && + if (!soc_dai->driver->symmetric_rates && !rtd->dai_link->symmetric_rates) return 0; @@ -45,19 +42,19 @@ static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) * 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, + if (!soc_dai->rate) { + dev_warn(soc_dai->dev, "Not enforcing symmetric_rates due to race\n"); return 0; } - dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n", rtd->rate); + dev_dbg(soc_dai->dev, "Symmetry forces %dHz rate\n", soc_dai->rate); ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE, - rtd->rate, rtd->rate); + soc_dai->rate, soc_dai->rate); if (ret < 0) { - dev_err(&rtd->dev, + dev_err(soc_dai->dev, "Unable to apply rate symmetry constraint: %d\n", ret); return ret; } @@ -66,6 +63,41 @@ static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) } /* + * List of sample sizes that might go over the bus for parameter + * application. There ought to be a wildcard sample size for things + * like the DAC/ADC resolution to use but there isn't right now. + */ +static int sample_sizes[] = { + 24, 32, +}; + +static void soc_pcm_apply_msb(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + int ret, i, bits; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + bits = dai->driver->playback.sig_bits; + else + bits = dai->driver->capture.sig_bits; + + if (!bits) + return; + + for (i = 0; i < ARRAY_SIZE(sample_sizes); i++) { + if (bits >= sample_sizes[i]) + continue; + + ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, + sample_sizes[i], bits); + if (ret != 0) + dev_warn(dai->dev, + "Failed to set MSB %d/%d: %d\n", + bits, sample_sizes[i], ret); + } +} + +/* * 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. @@ -81,14 +113,18 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; int ret = 0; + pm_runtime_get_sync(cpu_dai->dev); + pm_runtime_get_sync(codec_dai->dev); + pm_runtime_get_sync(platform->dev); + mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); /* 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); + dev_err(cpu_dai->dev, "can't open interface %s: %d\n", + cpu_dai->name, ret); goto out; } } @@ -96,7 +132,8 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) 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); + dev_err(platform->dev, "can't open platform %s: %d\n", + platform->name, ret); goto platform_err; } } @@ -104,8 +141,8 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) 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); + dev_err(codec_dai->dev, "can't open codec %s: %d\n", + codec_dai->name, ret); goto codec_dai_err; } } @@ -113,7 +150,8 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) 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); + pr_err("asoc: %s startup failed: %d\n", + rtd->dai_link->name, ret); goto machine_err; } } @@ -186,9 +224,18 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) goto config_err; } + soc_pcm_apply_msb(substream, codec_dai); + soc_pcm_apply_msb(substream, cpu_dai); + /* 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 (cpu_dai->active) { + ret = soc_pcm_apply_symmetry(substream, cpu_dai); + if (ret != 0) + goto config_err; + } + + if (codec_dai->active) { + ret = soc_pcm_apply_symmetry(substream, codec_dai); if (ret != 0) goto config_err; } @@ -231,6 +278,11 @@ platform_err: cpu_dai->driver->ops->shutdown(substream, cpu_dai); out: mutex_unlock(&rtd->pcm_mutex); + + pm_runtime_put(platform->dev); + pm_runtime_put(codec_dai->dev); + pm_runtime_put(cpu_dai->dev); + return ret; } @@ -255,9 +307,8 @@ static void close_delayed_work(struct work_struct *work) /* 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); + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, + codec_dai, SND_SOC_DAPM_STREAM_STOP); } mutex_unlock(&rtd->pcm_mutex); @@ -290,8 +341,12 @@ static int soc_pcm_close(struct snd_pcm_substream *substream) codec_dai->active--; codec->active--; - if (!cpu_dai->active && !codec_dai->active) - rtd->rate = 0; + /* clear the corresponding DAIs rate when inactive */ + if (!cpu_dai->active) + cpu_dai->rate = 0; + + if (!codec_dai->active) + codec_dai->rate = 0; /* Muting the DAC suppresses artifacts caused during digital * shutdown, for example from stopping clocks. @@ -313,18 +368,31 @@ static int soc_pcm_close(struct snd_pcm_substream *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)); + if (!rtd->pmdown_time || codec->ignore_pmdown_time || + rtd->dai_link->ignore_pmdown_time) { + /* powered down playback stream now */ + snd_soc_dapm_stream_event(rtd, + SNDRV_PCM_STREAM_PLAYBACK, + codec_dai, + SND_SOC_DAPM_STREAM_STOP); + } else { + /* 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); + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, + codec_dai, SND_SOC_DAPM_STREAM_STOP); } mutex_unlock(&rtd->pcm_mutex); + + pm_runtime_put(platform->dev); + pm_runtime_put(codec_dai->dev); + pm_runtime_put(cpu_dai->dev); + return 0; } @@ -346,7 +414,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) 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"); + pr_err("asoc: machine prepare error: %d\n", ret); goto out; } } @@ -354,7 +422,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) 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"); + dev_err(platform->dev, "platform prepare error: %d\n", + ret); goto out; } } @@ -362,7 +431,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) 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"); + dev_err(codec_dai->dev, "DAI prepare error: %d\n", + ret); goto out; } } @@ -370,7 +440,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) 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"); + dev_err(cpu_dai->dev, "DAI prepare error: %d\n", + ret); goto out; } } @@ -382,14 +453,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) 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_dapm_stream_event(rtd, substream->stream, codec_dai, + SND_SOC_DAPM_STREAM_START); snd_soc_dai_digital_mute(codec_dai, 0); @@ -417,7 +482,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, 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"); + pr_err("asoc: machine hw_params failed: %d\n", ret); goto out; } } @@ -425,8 +490,8 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, 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); + dev_err(codec_dai->dev, "can't set %s hw params: %d\n", + codec_dai->name, ret); goto codec_err; } } @@ -434,8 +499,8 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, 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); + dev_err(cpu_dai->dev, "%s hw params failed: %d\n", + cpu_dai->name, ret); goto interface_err; } } @@ -443,13 +508,15 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, 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); + dev_err(platform->dev, "%s hw params failed: %d\n", + platform->name, ret); goto platform_err; } } - rtd->rate = params_rate(params); + /* store the rate for each DAIs */ + cpu_dai->rate = params_rate(params); + codec_dai->rate = params_rate(params); out: mutex_unlock(&rtd->pcm_mutex); @@ -567,17 +634,6 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) return offset; } -/* ASoC PCM operations */ -static struct snd_pcm_ops soc_pcm_ops = { - .open = soc_pcm_open, - .close = soc_pcm_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, -}; - /* create a new pcm */ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) { @@ -585,10 +641,19 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) 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_ops *soc_pcm_ops = &rtd->ops; struct snd_pcm *pcm; char new_name[64]; int ret = 0, playback = 0, capture = 0; + soc_pcm_ops->open = soc_pcm_open; + soc_pcm_ops->close = soc_pcm_close; + soc_pcm_ops->hw_params = soc_pcm_hw_params; + soc_pcm_ops->hw_free = soc_pcm_hw_free; + soc_pcm_ops->prepare = soc_pcm_prepare; + soc_pcm_ops->trigger = soc_pcm_trigger; + soc_pcm_ops->pointer = soc_pcm_pointer; + /* check client and interface hw capabilities */ snprintf(new_name, sizeof(new_name), "%s %s-%d", rtd->dai_link->stream_name, codec_dai->name, num); @@ -612,20 +677,20 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) 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; + 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); + 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); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, soc_pcm_ops); if (platform->driver->pcm_new) { ret = platform->driver->pcm_new(rtd); 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