Re: [PATCH v2 2/2] ALSA: compress: Pass id string to snd_compress_new

[Takashi Iwai <tiwai@suse.de>]

On Wed, 25 Nov 2015 11:46:16 +0100,
Richard Fitzgerald wrote:
> 
> Make snd_compress_new take an id string (like snd_pcm_new).
> This string can be included in the procfs info.
> 
> This patch also updates soc_new_compress() to create an ID
> based on the stream and dai name, as done for PCM streams.
> 
> Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
> ---
>  include/sound/compress_driver.h | 2 +-
>  sound/core/compress_offload.c   | 6 +++++-
>  sound/soc/soc-compress.c        | 8 +++++++-
>  3 files changed, 13 insertions(+), 3 deletions(-)
> 
> diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h
> index 85c4237..c0abcdc 100644
> --- a/include/sound/compress_driver.h
> +++ b/include/sound/compress_driver.h
> @@ -163,7 +163,7 @@ struct snd_compr {
>  int snd_compress_register(struct snd_compr *device);
>  int snd_compress_deregister(struct snd_compr *device);
>  int snd_compress_new(struct snd_card *card, int device,
> -			int type, struct snd_compr *compr);
> +			int type, const char *id, struct snd_compr *compr);
>  
>  /* dsp driver callback apis
>   * For playback: driver should call snd_compress_fragment_elapsed() to let the
> diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
> index 282b69a..326ea0e 100644
> --- a/sound/core/compress_offload.c
> +++ b/sound/core/compress_offload.c
> @@ -976,7 +976,7 @@ static int snd_compress_dev_free(struct snd_device *device)
>   * @compr: compress device pointer
>   */
>  int snd_compress_new(struct snd_card *card, int device,
> -			int dirn, struct snd_compr *compr)
> +			int dirn, const char *id, struct snd_compr *compr)
>  {
>  	static struct snd_device_ops ops = {
>  		.dev_free = snd_compress_dev_free,
> @@ -989,6 +989,10 @@ int snd_compress_new(struct snd_card *card, int device,
>  	compr->device = device;
>  	compr->direction = dirn;
>  
> +	if (IS_ENABLED(CONFIG_SND_VERBOSE_PROCFS))

This should be #if.  Otherwise the compile would fail (as already
kbuild bot spotted).


Takashi

> +		if (id)
> +			strlcpy(compr->id, id, sizeof(compr->id));
> +
>  	snd_device_initialize(&compr->dev, card);
>  	dev_set_name(&compr->dev, "comprC%iD%i", card->number, device);
>  
> diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
> index 12a9820..fffbe6f 100644
> --- a/sound/soc/soc-compress.c
> +++ b/sound/soc/soc-compress.c
> @@ -689,7 +689,13 @@ int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
>  		compr->ops->copy = soc_compr_copy;
>  
>  	mutex_init(&compr->lock);
> -	ret = snd_compress_new(rtd->card->snd_card, num, direction, compr);
> +
> +	snprintf(new_name, sizeof(new_name), "%s %s-%d",
> +		 rtd->dai_link->stream_name,
> +		 rtd->codec_dai->name, num);
> +
> +	ret = snd_compress_new(rtd->card->snd_card, num, direction,
> +				new_name, compr);
>  	if (ret < 0) {
>  		pr_err("compress asoc: can't create compress for codec %s\n",
>  			codec->component.name);
> -- 
> 1.9.1
> 
>