[alsa-devel] [PATCH v5 2/7] ASoC: tegra: Allow 24bit and 32bit samples

[Dmitry Osipenko]

25.11.2019 13:37, Ben Dooks пишет:
> On 23/11/2019 21:09, Dmitry Osipenko wrote:
>> 18.10.2019 18:48, Ben Dooks пишет:
>>> From: Edward Cragg <edward.cragg at codethink.co.uk>
>>>
>>> The tegra3 audio can support 24 and 32 bit sample sizes so add the
>>> option to the tegra30_i2s_hw_params to configure the S24_LE or S32_LE
>>> formats when requested.
>>>
>>> Signed-off-by: Edward Cragg <edward.cragg at codethink.co.uk>
>>> [ben.dooks at codethink.co.uk: fixup merge of 24 and 32bit]
>>> [ben.dooks at codethink.co.uk: add pm calls around ytdm config]
>>> [ben.dooks at codethink.co.uk: drop debug printing to dev_dbg]
>>> Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>
>>> ---
>>> squash 5aeca5a055fd ASoC: tegra: i2s: pm_runtime_get_sync() is needed
>>> in tdm code
>>>
>>> ASoC: tegra: i2s: pm_runtime_get_sync() is needed in tdm code
>>> ---
>>>   sound/soc/tegra/tegra30_i2s.c | 25 ++++++++++++++++++++-----
>>>   1 file changed, 20 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/sound/soc/tegra/tegra30_i2s.c
>>> b/sound/soc/tegra/tegra30_i2s.c
>>> index 73f0dddeaef3..063f34c882af 100644
>>> --- a/sound/soc/tegra/tegra30_i2s.c
>>> +++ b/sound/soc/tegra/tegra30_i2s.c
>>> @@ -127,7 +127,7 @@ static int tegra30_i2s_hw_params(struct
>>> snd_pcm_substream *substream,
>>>       struct device *dev = dai->dev;
>>>       struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
>>>       unsigned int mask, val, reg;
>>> -    int ret, sample_size, srate, i2sclock, bitcnt;
>>> +    int ret, sample_size, srate, i2sclock, bitcnt, audio_bits;
>>>       struct tegra30_ahub_cif_conf cif_conf;
>>>         if (params_channels(params) != 2)
>>> @@ -137,8 +137,19 @@ static int tegra30_i2s_hw_params(struct
>>> snd_pcm_substream *substream,
>>>       switch (params_format(params)) {
>>>       case SNDRV_PCM_FORMAT_S16_LE:
>>>           val = TEGRA30_I2S_CTRL_BIT_SIZE_16;
>>> +        audio_bits = TEGRA30_AUDIOCIF_BITS_16;
>>>           sample_size = 16;
>>>           break;
>>> +    case SNDRV_PCM_FORMAT_S24_LE:
>>> +        val = TEGRA30_I2S_CTRL_BIT_SIZE_24;
>>> +        audio_bits = TEGRA30_AUDIOCIF_BITS_24;
>>> +        sample_size = 24;
>>> +        break;
>>> +    case SNDRV_PCM_FORMAT_S32_LE:
>>> +        val = TEGRA30_I2S_CTRL_BIT_SIZE_32;
>>> +        audio_bits = TEGRA30_AUDIOCIF_BITS_32;
>>> +        sample_size = 32;
>>> +        break;
>>>       default:
>>>           return -EINVAL;
>>>       }
>>> @@ -170,8 +181,8 @@ static int tegra30_i2s_hw_params(struct
>>> snd_pcm_substream *substream,
>>>       cif_conf.threshold = 0;
>>>       cif_conf.audio_channels = 2;
>>>       cif_conf.client_channels = 2;
>>> -    cif_conf.audio_bits = TEGRA30_AUDIOCIF_BITS_16;
>>> -    cif_conf.client_bits = TEGRA30_AUDIOCIF_BITS_16;
>>> +    cif_conf.audio_bits = audio_bits;
>>> +    cif_conf.client_bits = audio_bits;
>>>       cif_conf.expand = 0;
>>>       cif_conf.stereo_conv = 0;
>>>       cif_conf.replicate = 0;
>>> @@ -306,14 +317,18 @@ static const struct snd_soc_dai_driver
>>> tegra30_i2s_dai_template = {
>>>           .channels_min = 2,
>>>           .channels_max = 2,
>>>           .rates = SNDRV_PCM_RATE_8000_96000,
>>> -        .formats = SNDRV_PCM_FMTBIT_S16_LE,
>>> +        .formats = SNDRV_PCM_FMTBIT_S32_LE |
>>> +               SNDRV_PCM_FMTBIT_S24_LE |
>>> +               SNDRV_PCM_FMTBIT_S16_LE,
>>>       },
>>>       .capture = {
>>>           .stream_name = "Capture",
>>>           .channels_min = 2,
>>>           .channels_max = 2,
>>>           .rates = SNDRV_PCM_RATE_8000_96000,
>>> -        .formats = SNDRV_PCM_FMTBIT_S16_LE,
>>> +        .formats = SNDRV_PCM_FMTBIT_S32_LE |
>>> +               SNDRV_PCM_FMTBIT_S24_LE |
>>> +               SNDRV_PCM_FMTBIT_S16_LE,
>>>       },
>>>       .ops = &tegra30_i2s_dai_ops,
>>>       .symmetric_rates = 1,
>>>
>>
>> Hello,
>>
>> This patch breaks audio on Tegra30. I don't see errors anywhere, but
>> there is no audio and reverting this patch helps. Please fix it.
> 
> What is the failure mode? I can try and take a look at this some time
> this week, but I am not sure if I have any boards with an actual useful
> audio output?

The failure mode is that there no sound. I also noticed that video
playback stutters a lot if movie file has audio track, seems something
times out during of the audio playback. For now I don't have any more info.