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ASoC: dpcm: rework runtime stream merge

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The goal of this patch is to simplify a bit dpcm runtime stream merge
by removing several local variables.

ATM, merge functions return the BE 'filter' values which should then be
filtered against the FE stream values. This create a lot of local
variable and unnecessary init of min and max.

Instead of this, we can pass the FE stream values directly and let the
BE filtering functions perform the merge 'in-place'

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jerome Brunet 2018-07-05 12:13:48 +02:00 committed by Mark Brown
parent caed9d636e
commit 435ffb76f8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 15 additions and 24 deletions
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39
sound/soc/soc-pcm.c
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@ -1672,29 +1672,28 @@ unwind:
}
static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
struct snd_soc_pcm_stream *stream,
u64 formats)
struct snd_soc_pcm_stream *stream)
{
runtime->hw.rate_min = stream->rate_min;
runtime->hw.rate_max = stream->rate_max;
runtime->hw.channels_min = stream->channels_min;
runtime->hw.channels_max = stream->channels_max;
if (runtime->hw.formats)
runtime->hw.formats &= formats & stream->formats;
runtime->hw.formats &= stream->formats;
else
runtime->hw.formats = formats & stream->formats;
runtime->hw.formats = stream->formats;
runtime->hw.rates = stream->rates;
}
static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream)
static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream,
u64 *formats)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
struct snd_soc_dpcm *dpcm;
u64 formats = ULLONG_MAX;
int stream = substream->stream;
if (!fe->dai_link->dpcm_merged_format)
return formats;
return;
/*
* It returns merged BE codec format
@ -1714,16 +1713,14 @@ static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream)
else
codec_stream = &codec_dai_drv->capture;
formats &= codec_stream->formats;
*formats &= codec_stream->formats;
}
}
return formats;
}
static void dpcm_runtime_base_chan(struct snd_pcm_substream *substream,
unsigned int *channels_min,
unsigned int *channels_max)
static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
unsigned int *channels_min,
unsigned int *channels_max)
{
struct snd_soc_pcm_runtime *fe = substream->private_data;
struct snd_soc_dpcm *dpcm;
@ -1732,9 +1729,6 @@ static void dpcm_runtime_base_chan(struct snd_pcm_substream *substream,
if (!fe->dai_link->dpcm_merged_chan)
return;
*channels_min = 0;
*channels_max = UINT_MAX;
/*
* It returns merged BE codec channel;
* if FE want to use it (= dpcm_merged_chan)
@ -1781,18 +1775,15 @@ static void dpcm_set_fe_runtime(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_driver *cpu_dai_drv = cpu_dai->driver;
u64 format = dpcm_runtime_base_format(substream);
unsigned int channels_min = 0, channels_max = UINT_MAX;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback, format);
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
else
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture, format);
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
dpcm_runtime_base_chan(substream, &channels_min, &channels_max);
runtime->hw.channels_min = max(channels_min, runtime->hw.channels_min);
runtime->hw.channels_max = min(channels_max, runtime->hw.channels_max);
dpcm_runtime_merge_format(substream, &runtime->hw.formats);
dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min,
&runtime->hw.channels_max);
}
static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);