From: Marcus Cooper <codekip...@gmail.com>
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 <codekip...@gmail.com>
---
sound/soc/sunxi/sun4i-i2s.c | 34 +++++++++++++++++++++++++++++++---
1 file changed, 31 insertions(+), 3 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 436480df1844..7cf4dfe440de 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -451,6 +451,11 @@ 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:
+ width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ break;
default:
dev_err(dai->dev, "Unsupported physical sample width: %d\n",
params_physical_width(params));
@@ -463,7 +468,18 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream
*substream,
sr = 0;
wss = 0;
break;
-
+ case 20:
+ sr = 1;
+ wss = 1;
+ break;
+ case 24:
+ sr = 2;
+ wss = 2;
+ break;
+ case 32:
+ sr = 4;
+ wss = 4;
+ break;
default:
dev_err(dai->dev, "Unsupported sample width: %d\n",
params_width(params));
@@ -766,6 +782,13 @@ 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_3LE | \
+ 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 = {
@@ -773,14 +796,14 @@ 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,
@@ -1170,6 +1193,11 @@ 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)
--
2.16.2
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