[alsa-devel] [PATCH] ASoC: davinci-mcasp: Fix rx rotation settings

[Peter Ujfalusi]

On 09/03/2014 05:21 PM, Peter Ujfalusi wrote:
> Mark,
> 
> On 09/03/2014 05:17 PM, Peter Ujfalusi wrote:
>> We need to take into account the slot size as well when calculating the
>> RROT for received data.
>> This patch will fix S24_3LE audio capture.
> 
> Can you wait a bit, I need to test something with this patch...

Please ignore this patch, it seams that S24_LE capture is still broken...

-- 
Péter

> 
>>
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
>> ---
>>  sound/soc/davinci/davinci-mcasp.c | 17 +++++++++--------
>>  1 file changed, 9 insertions(+), 8 deletions(-)
>>
>> diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
>> index 6a6b2ff7d7d7..267cd4937c7c 100644
>> --- a/sound/soc/davinci/davinci-mcasp.c
>> +++ b/sound/soc/davinci/davinci-mcasp.c
>> @@ -463,11 +463,11 @@ static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id,
>>  }
>>  
>>  static int davinci_config_channel_size(struct davinci_mcasp *mcasp,
>> -				       int word_length)
>> +				       int slot_size, int word_length)
>>  {
>>  	u32 fmt;
>>  	u32 tx_rotate = (word_length / 4) & 0x7;
>> -	u32 rx_rotate = (32 - word_length) / 4;
>> +	u32 rx_rotate = (slot_size - word_length) / 4;
>>  	u32 mask = (1ULL << word_length) - 1;
>>  
>>  	/*
>> @@ -726,7 +726,7 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream,
>>  	struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai);
>>  	struct davinci_pcm_dma_params *dma_params =
>>  					&mcasp->dma_params[substream->stream];
>> -	int word_length;
>> +	int word_length, slot_size;
>>  	int channels = params_channels(params);
>>  	int period_size = params_period_size(params);
>>  	int ret;
>> @@ -766,31 +766,32 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream,
>>  	case SNDRV_PCM_FORMAT_U8:
>>  	case SNDRV_PCM_FORMAT_S8:
>>  		dma_params->data_type = 1;
>> -		word_length = 8;
>> +		slot_size = word_length = 8;
>>  		break;
>>  
>>  	case SNDRV_PCM_FORMAT_U16_LE:
>>  	case SNDRV_PCM_FORMAT_S16_LE:
>>  		dma_params->data_type = 2;
>> -		word_length = 16;
>> +		slot_size = word_length = 16;
>>  		break;
>>  
>>  	case SNDRV_PCM_FORMAT_U24_3LE:
>>  	case SNDRV_PCM_FORMAT_S24_3LE:
>>  		dma_params->data_type = 3;
>> -		word_length = 24;
>> +		slot_size = word_length = 24;
>>  		break;
>>  
>>  	case SNDRV_PCM_FORMAT_U24_LE:
>>  	case SNDRV_PCM_FORMAT_S24_LE:
>>  		dma_params->data_type = 4;
>>  		word_length = 24;
>> +		slot_size = 32;
>>  		break;
>>  
>>  	case SNDRV_PCM_FORMAT_U32_LE:
>>  	case SNDRV_PCM_FORMAT_S32_LE:
>>  		dma_params->data_type = 4;
>> -		word_length = 32;
>> +		slot_size = word_length = 32;
>>  		break;
>>  
>>  	default:
>> @@ -803,7 +804,7 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream,
>>  	else
>>  		dma_params->acnt = dma_params->data_type;
>>  
>> -	davinci_config_channel_size(mcasp, word_length);
>> +	davinci_config_channel_size(mcasp, slot_size, word_length);
>>  
>>  	return 0;
>>  }
>>
> 
>