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[16/25] ASoC: sun8i-codec: Enforce symmetric DAI parameters

Message ID 20201001021148.15852-17-samuel@sholland.org (mailing list archive)
State New, archived
Headers show
Series ASoC: sun8i-codec: support for AIF2 and AIF3 | expand

Commit Message

Samuel Holland Oct. 1, 2020, 2:11 a.m. UTC 
The AIFs have a single register controlling DAI parameters in both
directions, including BCLK/LRCK divisor word size. The DAIs produce only
noise or silence if any of these parameters is wrong. Therefore, we need
to enforce symmetry for these parameters, so starting a new substream
will not break an existing substream.

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 sound/soc/sunxi/sun8i-codec.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Maxime Ripard Oct. 5, 2020, 11:39 a.m. UTC | #1 
On Wed, Sep 30, 2020 at 09:11:39PM -0500, Samuel Holland wrote:
> The AIFs have a single register controlling DAI parameters in both
> directions, including BCLK/LRCK divisor word size. The DAIs produce only
> noise or silence if any of these parameters is wrong. Therefore, we need
> to enforce symmetry for these parameters, so starting a new substream
> will not break an existing substream.
> 
> Signed-off-by: Samuel Holland <samuel@sholland.org>

Acked-by: Maxime Ripard <mripard@kernel.org>

Maxime
diff mbox series

Patch

diff --git a/sound/soc/sunxi/sun8i-codec.c b/sound/soc/sunxi/sun8i-codec.c
index 0a53dc0c34d0..f21274530a0e 100644
--- a/sound/soc/sunxi/sun8i-codec.c
+++ b/sound/soc/sunxi/sun8i-codec.c
@@ -420,16 +420,19 @@  static struct snd_soc_dai_driver sun8i_codec_dais[] = {
 		/* playback capabilities */
 		.playback = {
 			.stream_name	= "AIF1 Playback",
 			.channels_min	= 1,
 			.channels_max	= 2,
 			.rates		= SNDRV_PCM_RATE_8000_192000,
 			.formats	= SNDRV_PCM_FMTBIT_S16_LE,
 		},
+		.symmetric_rates	= true,
+		.symmetric_channels	= true,
+		.symmetric_samplebits	= true,
 	},
 };
 
 static const char *const sun8i_aif_stereo_mux_enum_values[] = {
 	"Stereo", "Reverse Stereo", "Sum Mono", "Mix Mono"
 };
 
 static SOC_ENUM_DOUBLE_DECL(sun8i_aif1_ad0_stereo_mux_enum,