diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-pcm.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 0cf212c8bd88..23d6709a295d 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -478,6 +478,8 @@ static void soc_pcm_hw_init(struct snd_pcm_hardware *hw) hw->rates = UINT_MAX; hw->rate_min = 0; hw->rate_max = UINT_MAX; + hw->channels_min = 0; + hw->channels_max = UINT_MAX; } static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw, @@ -493,6 +495,13 @@ static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw, hw->rate_max = min_not_zero(hw->rate_max, p->rate_max); } +static void soc_pcm_hw_update_chan(struct snd_pcm_hardware *hw, + struct snd_soc_pcm_stream *p) +{ + hw->channels_min = max(hw->channels_min, p->channels_min); + hw->channels_max = min(hw->channels_max, p->channels_max); +} + /** * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream * @rtd: ASoC PCM runtime @@ -509,7 +518,6 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *cpu_dai; struct snd_soc_pcm_stream *codec_stream; struct snd_soc_pcm_stream *cpu_stream; - unsigned int chan_min = 0, chan_max = UINT_MAX; unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX; u64 formats = ULLONG_MAX; int i; @@ -530,11 +538,12 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd, cpu_stream = snd_soc_dai_get_pcm_stream(cpu_dai, stream); - cpu_chan_min = max(cpu_chan_min, cpu_stream->channels_min); - cpu_chan_max = min(cpu_chan_max, cpu_stream->channels_max); + soc_pcm_hw_update_chan(hw, cpu_stream); soc_pcm_hw_update_rate(hw, cpu_stream); formats &= cpu_stream->formats; } + cpu_chan_min = hw->channels_min; + cpu_chan_max = hw->channels_max; /* second calculate min/max only for CODECs in the DAI link */ for_each_rtd_codec_dais(rtd, i, codec_dai) { @@ -550,14 +559,13 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd, codec_stream = snd_soc_dai_get_pcm_stream(codec_dai, stream); - chan_min = max(chan_min, codec_stream->channels_min); - chan_max = min(chan_max, codec_stream->channels_max); + soc_pcm_hw_update_chan(hw, codec_stream); soc_pcm_hw_update_rate(hw, codec_stream); formats &= codec_stream->formats; } /* Verify both a valid CPU DAI and a valid CODEC DAI were found */ - if (!chan_min || !cpu_chan_min) + if (!hw->channels_min) return -EINVAL; /* @@ -566,13 +574,11 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd, * channel allocation be fixed up later */ if (rtd->num_codecs > 1) { - chan_min = cpu_chan_min; - chan_max = cpu_chan_max; + hw->channels_min = cpu_chan_min; + hw->channels_max = cpu_chan_max; } /* finally find a intersection between CODECs and CPUs */ - hw->channels_min = max(chan_min, cpu_chan_min); - hw->channels_max = min(chan_max, cpu_chan_max); hw->formats = formats; return 0; @@ -1523,8 +1529,7 @@ static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime, struct snd_pcm_hardware *hw = &runtime->hw; soc_pcm_hw_update_rate(hw, stream); - runtime->hw.channels_min = stream->channels_min; - runtime->hw.channels_max = stream->channels_max; + soc_pcm_hw_update_chan(hw, stream); if (runtime->hw.formats) runtime->hw.formats &= stream->formats; else @@ -1601,10 +1606,7 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream); - hw->channels_min = max(hw->channels_min, - cpu_stream->channels_min); - hw->channels_max = min(hw->channels_max, - cpu_stream->channels_max); + soc_pcm_hw_update_chan(hw, cpu_stream); } /* @@ -1614,10 +1616,7 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, if (be->num_codecs == 1) { codec_stream = snd_soc_dai_get_pcm_stream(asoc_rtd_to_codec(be, 0), stream); - hw->channels_min = max(hw->channels_min, - codec_stream->channels_min); - hw->channels_max = min(hw->channels_max, - codec_stream->channels_max); + soc_pcm_hw_update_chan(hw, codec_stream); } } } |