Hi!
Dne sreda, 14. avgust 2019 ob 08:08:53 CEST je codekipper@xxxxxxxxx
napisal(a):
> From: Marcus Cooper <codekipper@xxxxxxxxx>
>
> Extend the functionality of the driver to include support of 20 and
> 24 bits per sample for the earlier SoCs.
>
> Newer SoCs can also handle 32bit samples.
>
> Signed-off-by: Marcus Cooper <codekipper@xxxxxxxxx>
> ---
> sound/soc/sunxi/sun4i-i2s.c | 21 +++++++++++++++++++--
> 1 file changed, 19 insertions(+), 2 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index a71969167053..d3c8789f70bb 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -690,6 +690,11 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream
> *substream, case 16:
> width = DMA_SLAVE_BUSWIDTH_2_BYTES;
> break;
> + case 20:
> + case 24:
> + case 32:
params_physical_width() returns 32 also for 20 and 24-bit formats, so drop 20
and 24.
Best regards,
Jernej
> + width = DMA_SLAVE_BUSWIDTH_4_BYTES;
> + break;
> default:
> dev_err(dai->dev, "Unsupported physical sample width:
%d\n",
> params_physical_width(params));
> @@ -1015,6 +1020,13 @@ static int sun4i_i2s_dai_probe(struct snd_soc_dai
> *dai) return 0;
> }
>
> +#define SUN4I_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
> + SNDRV_PCM_FMTBIT_S20_LE | \
> + SNDRV_PCM_FMTBIT_S24_LE)
> +
> +#define SUN8I_FORMATS (SUN4I_FORMATS | \
> + SNDRV_PCM_FMTBIT_S32_LE)
> +
> static struct snd_soc_dai_driver sun4i_i2s_dai = {
> .probe = sun4i_i2s_dai_probe,
> .capture = {
> @@ -1022,14 +1034,14 @@ static struct snd_soc_dai_driver sun4i_i2s_dai = {
> .channels_min = 2,
> .channels_max = 2,
> .rates = SNDRV_PCM_RATE_8000_192000,
> - .formats = SNDRV_PCM_FMTBIT_S16_LE,
> + .formats = SUN4I_FORMATS,
> },
> .playback = {
> .stream_name = "Playback",
> .channels_min = 2,
> .channels_max = 2,
> .rates = SNDRV_PCM_RATE_8000_192000,
> - .formats = SNDRV_PCM_FMTBIT_S16_LE,
> + .formats = SUN4I_FORMATS,
> },
> .ops = &sun4i_i2s_dai_ops,
> .symmetric_rates = 1,
> @@ -1505,6 +1517,11 @@ static int sun4i_i2s_probe(struct platform_device
> *pdev) goto err_pm_disable;
> }
>
> + if (i2s->variant->has_fmt_set_lrck_period) {
> + soc_dai->playback.formats = SUN8I_FORMATS;
> + soc_dai->capture.formats = SUN8I_FORMATS;
> + }
> +
> if (!of_property_read_u32(pdev->dev.of_node,
> "allwinner,playback-channels",
&val)) {
> if (val >= 2 && val <= 8)
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