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Diffstat (limited to 'sound/soc/soc-pcm.c')
-rw-r--r--sound/soc/soc-pcm.c91
1 files changed, 47 insertions, 44 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index ccb6be4d658d..b6c640332a17 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -33,6 +33,29 @@
#define DPCM_MAX_BE_USERS 8
+/**
+ * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
+ * @substream: the pcm substream
+ * @hw: the hardware parameters
+ *
+ * Sets the substream runtime hardware parameters.
+ */
+int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
+ const struct snd_pcm_hardware *hw)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ runtime->hw.info = hw->info;
+ runtime->hw.formats = hw->formats;
+ runtime->hw.period_bytes_min = hw->period_bytes_min;
+ runtime->hw.period_bytes_max = hw->period_bytes_max;
+ runtime->hw.periods_min = hw->periods_min;
+ runtime->hw.periods_max = hw->periods_max;
+ runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
+ runtime->hw.fifo_size = hw->fifo_size;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
+
/* DPCM stream event, send event to FE and all active BEs. */
static int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
int event)
@@ -124,6 +147,26 @@ static void soc_pcm_apply_msb(struct snd_pcm_substream *substream,
}
}
+static void soc_pcm_init_runtime_hw(struct snd_pcm_hardware *hw,
+ struct snd_soc_pcm_stream *codec_stream,
+ struct snd_soc_pcm_stream *cpu_stream)
+{
+ hw->rate_min = max(codec_stream->rate_min, cpu_stream->rate_min);
+ hw->rate_max = max(codec_stream->rate_max, cpu_stream->rate_max);
+ hw->channels_min = max(codec_stream->channels_min,
+ cpu_stream->channels_min);
+ hw->channels_max = min(codec_stream->channels_max,
+ cpu_stream->channels_max);
+ hw->formats = codec_stream->formats & cpu_stream->formats;
+ hw->rates = codec_stream->rates & cpu_stream->rates;
+ if (codec_stream->rates
+ & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+ hw->rates |= cpu_stream->rates;
+ if (cpu_stream->rates
+ & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))
+ hw->rates |= codec_stream->rates;
+}
+
/*
* 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
@@ -189,51 +232,11 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
/* 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;
+ soc_pcm_init_runtime_hw(&runtime->hw, &codec_dai_drv->playback,
+ &cpu_dai_drv->playback);
} 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;
+ soc_pcm_init_runtime_hw(&runtime->hw, &codec_dai_drv->capture,
+ &cpu_dai_drv->capture);
}
ret = -EINVAL;