[alsa-devel] [bug] Volume at maximum when track with different frequency is played with my RME sound card

[Maeda]

I've problem with compiling rme96.c (see attachment).
Maybe I forgot something, i double checked, but my rme96.c seems to be good.

Any clue ?

Le 04/12/2015 12:19, Takashi Iwai a écrit :
> On Fri, 04 Dec 2015 11:44:02 +0100,
> Maeda wrote:
>> Hi !
>>
>> Well done ! It plays without max loud volume, and no errors on output.
>> I tried with the following test :
>>
>>      `aplay -fcd -d3 /dev/zero ;aplay -r96000 -c2 -d3 /dev/zero
>>      ;speaker-test  -c2 -twav`
>>
>> And it's OK. Then I tried with mplayer and some flac files (44.1 / 48
>> and 96 KHz sample) : no problem.
>>
>> I think you found the solution. If there are some future problem this
>> patch generates, I'll only see when using "it" each day. Then, for now,
>> you can commit it ;)
> Good to hear.  Could you try the revised patch below instead?
> It does restore DAC volume at the end, after the spinlock, so that we
> can avoid the ugly delay.
>
>
> thanks,
>
> Takashi
>
> ---
> diff --git a/sound/pci/rme96.c b/sound/pci/rme96.c
> index 714df906249e..e4229d01cf6a 100644
> --- a/sound/pci/rme96.c
> +++ b/sound/pci/rme96.c
> @@ -741,10 +741,11 @@ snd_rme96_playback_setrate(struct rme96 *rme96,
>   	{
>   		/* change to/from double-speed: reset the DAC (if available) */
>   		snd_rme96_reset_dac(rme96);
> +		return 1; /* need to restore volume */
>   	} else {
>   		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
> +		return 0;
>   	}
> -	return 0;
>   }
>   
>   static int
> @@ -980,6 +981,7 @@ snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
>   	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
>   	struct snd_pcm_runtime *runtime = substream->runtime;
>   	int err, rate, dummy;
> +	bool apply_dac_volume = false;
>   
>   	runtime->dma_area = (void __force *)(rme96->iobase +
>   					     RME96_IO_PLAY_BUFFER);
> @@ -993,24 +995,24 @@ snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
>   	{
>                   /* slave clock */
>                   if ((int)params_rate(params) != rate) {
> -			spin_unlock_irq(&rme96->lock);
> -			return -EIO;
> -                }
> -	} else if ((err = snd_rme96_playback_setrate(rme96, params_rate(params))) < 0) {
> -		spin_unlock_irq(&rme96->lock);
> -		return err;
> -	}
> -	if ((err = snd_rme96_playback_setformat(rme96, params_format(params))) < 0) {
> -		spin_unlock_irq(&rme96->lock);
> -		return err;
> +			err = -EIO;
> +			goto error;
> +		}
> +	} else {
> +		err = snd_rme96_playback_setrate(rme96, params_rate(params));
> +		if (err < 0)
> +			goto error;
> +		apply_dac_volume = err > 0; /* need to restore volume later? */
>   	}
> +	if ((err = snd_rme96_playback_setformat(rme96, params_format(params))) < 0)
> +		goto error;
>   	snd_rme96_setframelog(rme96, params_channels(params), 1);
>   	if (rme96->capture_periodsize != 0) {
>   		if (params_period_size(params) << rme96->playback_frlog !=
>   		    rme96->capture_periodsize)
>   		{
> -			spin_unlock_irq(&rme96->lock);
> -			return -EBUSY;
> +			err = -EBUSY;
> +			goto error;
>   		}
>   	}
>   	rme96->playback_periodsize =
> @@ -1022,8 +1024,15 @@ snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
>   		writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
>   	}
>   	spin_unlock_irq(&rme96->lock);
> +	err = 0;
>   		
> -	return 0;
> + error:
> +	if (apply_dac_volume) {
> +		usleep_range(3000, 10000);
> +		snd_rme96_apply_dac_volume(rme96);
> +	}
> +
> +	return err;
>   }
>   
>   static int

-------------- next part --------------
  CC [M]  sound/pci/rme96.o
sound/pci/rme96.c: Dans la fonction ‘snd_rme96_playback_hw_params’:
sound/pci/rme96.c:1008:3: erreur: label ‘error’ used but not defined
   goto error;
   ^
sound/pci/rme96.c:1009:2: attention : « return » manquant dans une fonction devant retourner une valeur [-Wreturn-type]
  }
  ^
sound/pci/rme96.c: Hors de toute fonction :
sound/pci/rme96.c:1010:46: erreur: expected ‘)’ before ‘(’ token
  snd_rme96_setframelog(rme96, params_channels(params), 1);
                                              ^
sound/pci/rme96.c:1011:2: erreur: expected identifier or ‘(’ before ‘if’
  if (rme96->capture_periodsize != 0) {
  ^
sound/pci/rme96.c:1019:7: erreur: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘->’ token
  rme96->playback_periodsize =
       ^
sound/pci/rme96.c:1021:46: erreur: expected ‘)’ before ‘->’ token
  snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
                                              ^
sound/pci/rme96.c:1023:2: erreur: expected identifier or ‘(’ before ‘if’
  if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
  ^
sound/pci/rme96.c:1027:18: erreur: expected declaration specifiers or ‘...’ before ‘&’ token
  spin_unlock_irq(&rme96->lock);
                  ^
sound/pci/rme96.c:1028:2: attention : la définition de données n'a pas de type ni de classe de stockage
  err = 0;  
  ^
sound/pci/rme96.c:1028:2: erreur: type defaults to ‘int’ in declaration of ‘err’ [-Werror=implicit-int]
sound/pci/rme96.c:1029:7: erreur: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘:’ token
  error:
       ^
sound/pci/rme96.c:1035:2: erreur: expected identifier or ‘(’ before ‘return’
  return err;
  ^
sound/pci/rme96.c:1036:1: erreur: expected identifier or ‘(’ before ‘}’ token
 }