[PATCH 02/16] ALSA: hda: Prepare for compress stream support

[Takashi Iwai]

On Thu, 01 Dec 2022 18:56:05 +0100,
Cezary Rojewski wrote:
> 
> Before introducing compress specific changes, adjust BDL and parameters
> setup functions so these are not tightly coupled with PCM streams.
> 
> Signed-off-by: Cezary Rojewski <cezary.rojewski at intel.com>

Acked-by: Takashi Iwai <tiwai at suse.de>


thanks,

Takashi

> ---
>  sound/hda/hdac_stream.c | 32 ++++++++++++++++----------------
>  1 file changed, 16 insertions(+), 16 deletions(-)
> 
> diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c
> index 3b250ee7f6a7..8a12c6347914 100644
> --- a/sound/hda/hdac_stream.c
> +++ b/sound/hda/hdac_stream.c
> @@ -487,11 +487,15 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev)
>  {
>  	struct hdac_bus *bus = azx_dev->bus;
>  	struct snd_pcm_substream *substream = azx_dev->substream;
> -	struct snd_pcm_runtime *runtime = substream->runtime;
> +	struct snd_pcm_runtime *runtime;
> +	struct snd_dma_buffer *dmab;
>  	__le32 *bdl;
>  	int i, ofs, periods, period_bytes;
>  	int pos_adj, pos_align;
>  
> +	runtime = substream->runtime;
> +	dmab = snd_pcm_get_dma_buf(substream);
> +
>  	/* reset BDL address */
>  	snd_hdac_stream_writel(azx_dev, SD_BDLPL, 0);
>  	snd_hdac_stream_writel(azx_dev, SD_BDLPU, 0);
> @@ -505,7 +509,7 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev)
>  	azx_dev->frags = 0;
>  
>  	pos_adj = bus->bdl_pos_adj;
> -	if (!azx_dev->no_period_wakeup && pos_adj > 0) {
> +	if (runtime && !azx_dev->no_period_wakeup && pos_adj > 0) {
>  		pos_align = pos_adj;
>  		pos_adj = DIV_ROUND_UP(pos_adj * runtime->rate, 48000);
>  		if (!pos_adj)
> @@ -518,8 +522,7 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev)
>  				 pos_adj);
>  			pos_adj = 0;
>  		} else {
> -			ofs = setup_bdle(bus, snd_pcm_get_dma_buf(substream),
> -					 azx_dev,
> +			ofs = setup_bdle(bus, dmab, azx_dev,
>  					 &bdl, ofs, pos_adj, true);
>  			if (ofs < 0)
>  				goto error;
> @@ -529,13 +532,11 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev)
>  
>  	for (i = 0; i < periods; i++) {
>  		if (i == periods - 1 && pos_adj)
> -			ofs = setup_bdle(bus, snd_pcm_get_dma_buf(substream),
> -					 azx_dev, &bdl, ofs,
> -					 period_bytes - pos_adj, 0);
> +			ofs = setup_bdle(bus, dmab, azx_dev,
> +					 &bdl, ofs, period_bytes - pos_adj, 0);
>  		else
> -			ofs = setup_bdle(bus, snd_pcm_get_dma_buf(substream),
> -					 azx_dev, &bdl, ofs,
> -					 period_bytes,
> +			ofs = setup_bdle(bus, dmab, azx_dev,
> +					 &bdl, ofs, period_bytes,
>  					 !azx_dev->no_period_wakeup);
>  		if (ofs < 0)
>  			goto error;
> @@ -560,26 +561,25 @@ EXPORT_SYMBOL_GPL(snd_hdac_stream_setup_periods);
>  int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
>  				 unsigned int format_val)
>  {
> -
> -	unsigned int bufsize, period_bytes;
>  	struct snd_pcm_substream *substream = azx_dev->substream;
> -	struct snd_pcm_runtime *runtime;
> +	unsigned int bufsize, period_bytes;
> +	unsigned int no_period_wakeup;
>  	int err;
>  
>  	if (!substream)
>  		return -EINVAL;
> -	runtime = substream->runtime;
>  	bufsize = snd_pcm_lib_buffer_bytes(substream);
>  	period_bytes = snd_pcm_lib_period_bytes(substream);
> +	no_period_wakeup = substream->runtime->no_period_wakeup;
>  
>  	if (bufsize != azx_dev->bufsize ||
>  	    period_bytes != azx_dev->period_bytes ||
>  	    format_val != azx_dev->format_val ||
> -	    runtime->no_period_wakeup != azx_dev->no_period_wakeup) {
> +	    no_period_wakeup != azx_dev->no_period_wakeup) {
>  		azx_dev->bufsize = bufsize;
>  		azx_dev->period_bytes = period_bytes;
>  		azx_dev->format_val = format_val;
> -		azx_dev->no_period_wakeup = runtime->no_period_wakeup;
> +		azx_dev->no_period_wakeup = no_period_wakeup;
>  		err = snd_hdac_stream_setup_periods(azx_dev);
>  		if (err < 0)
>  			return err;
> -- 
> 2.25.1
>