Re: [alsa-devel] [PATCH for-5.6 05/23] ASoC: meson: Use managed buffer allocation

[Jerome Brunet <jbrunet@baylibre.com>]

On Tue 10 Dec 2019 at 15:25, Takashi Iwai <tiwai@suse.de> wrote:

> Clean up the driver with the new managed buffer allocation API.
> The superfluous snd_pcm_lib_malloc_pages() and
> snd_pcm_lib_free_pages() calls are dropped.
>
> Cc: Jerome Brunet <jbrunet@baylibre.com>

Thanks Takashi !
Acked-by: Jerome Brunet <jbrunet@baylibre.com>

> Cc: Kevin Hilman <khilman@baylibre.com>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> ---
>  sound/soc/meson/axg-fifo.c | 13 ++++---------
>  1 file changed, 4 insertions(+), 9 deletions(-)
>
> diff --git a/sound/soc/meson/axg-fifo.c b/sound/soc/meson/axg-fifo.c
> index d6f3eefb8f09..772eda857019 100644
> --- a/sound/soc/meson/axg-fifo.c
> +++ b/sound/soc/meson/axg-fifo.c
> @@ -115,11 +115,6 @@ int axg_fifo_pcm_hw_params(struct snd_soc_component *component,
>  	struct axg_fifo *fifo = axg_fifo_data(ss);
>  	dma_addr_t end_ptr;
>  	unsigned int burst_num;
> -	int ret;
> -
> -	ret = snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(params));
> -	if (ret < 0)
> -		return ret;
>  
>  	/* Setup dma memory pointers */
>  	end_ptr = runtime->dma_addr + runtime->dma_bytes - AXG_FIFO_BURST;
> @@ -167,7 +162,7 @@ int axg_fifo_pcm_hw_free(struct snd_soc_component *component,
>  	regmap_update_bits(fifo->map, FIFO_CTRL0,
>  			   CTRL0_INT_EN(FIFO_INT_COUNT_REPEAT), 0);
>  
> -	return snd_pcm_lib_free_pages(ss);
> +	return 0;
>  }
>  EXPORT_SYMBOL_GPL(axg_fifo_pcm_hw_free);
>  
> @@ -287,9 +282,9 @@ int axg_fifo_pcm_new(struct snd_soc_pcm_runtime *rtd, unsigned int type)
>  	struct snd_card *card = rtd->card->snd_card;
>  	size_t size = axg_fifo_hw.buffer_bytes_max;
>  
> -	snd_pcm_lib_preallocate_pages(rtd->pcm->streams[type].substream,
> -				      SNDRV_DMA_TYPE_DEV, card->dev,
> -				      size, size);
> +	snd_pcm_set_managed_buffer(rtd->pcm->streams[type].substream,
> +				   SNDRV_DMA_TYPE_DEV, card->dev,
> +				   size, size);
>  	return 0;
>  }
>  EXPORT_SYMBOL_GPL(axg_fifo_pcm_new);

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