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

[Dmitry Osipenko]

25.11.2019 20:22, Dmitry Osipenko пишет:
> 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.
> 

Oh, I didn't say how to reproduce it.. for example simply playing
big_buck_bunny_720p_h264.mov in MPV has the audio problem.

https://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_720p_h264.mov