[v4,5/9] ASoC: sun4i-i2s: Add set_tdm_slot functionality
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Message ID 20190603174735.21002-6-codekipper@gmail.com
State New
Headers show
Series
  • ASoC: sun4i-i2s: Updates to the driver
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Commit Message

Code Kipper June 3, 2019, 5:47 p.m. UTC
From: Marcus Cooper <codekipper@gmail.com>

Some codecs require a different amount of a bit clocks per frame than
what is calculated by the sample width. Use the tdm slot bindings to
provide this mechanism.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
---
 sound/soc/sunxi/sun4i-i2s.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

Comments

Maxime Ripard June 4, 2019, 7:49 a.m. UTC | #1
On Mon, Jun 03, 2019 at 07:47:31PM +0200, codekipper@gmail.com wrote:
> From: Marcus Cooper <codekipper@gmail.com>
>
> Some codecs require a different amount of a bit clocks per frame than

Which codec? And what are the actual requirements?

> what is calculated by the sample width. Use the tdm slot bindings to
> provide this mechanism.
>
> Signed-off-by: Marcus Cooper <codekipper@gmail.com>
> ---
>  sound/soc/sunxi/sun4i-i2s.c | 22 ++++++++++++++++++++--
>  1 file changed, 20 insertions(+), 2 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index 329883750d6f..bca73b3c0d74 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -186,6 +186,9 @@ struct sun4i_i2s {
>  	struct regmap_field	*field_rxchansel;
>
>  	const struct sun4i_i2s_quirks	*variant;
> +
> +	unsigned int	tdm_slots;
> +	unsigned int	slot_width;
>  };
>
>  struct sun4i_i2s_clk_div {
> @@ -337,7 +340,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>  	if (i2s->variant->is_h3_i2s_based)
>  		regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG,
>  				   SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
> -				   SUN8I_I2S_FMT0_LRCK_PERIOD(32));
> +				   SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));

This is an unrelated change, it should be in a separate patch.

>
>  	/* Set sign extension to pad out LSB with 0 */
>  	regmap_field_write(i2s->field_fmt_sext, 0);
> @@ -414,7 +417,8 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
>  			   sr + i2s->variant->fmt_offset);
>
>  	return sun4i_i2s_set_clk_rate(dai, params_rate(params),
> -				      params_width(params));
> +				      i2s->tdm_slots ?
> +				      i2s->slot_width : params_width(params));
>  }
>
>  static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
> @@ -657,11 +661,25 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
>  	return 0;
>  }
>
> +static int sun4i_i2s_set_dai_tdm_slot(struct snd_soc_dai *dai,
> +	unsigned int tx_mask, unsigned int rx_mask,
> +	int slots, int width)

The alignment after the wraping should be at the opening parenthesis.

> +{
> +	struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);
> +
> +	i2s->tdm_slots = slots;
> +
> +	i2s->slot_width = width;
> +
> +	return 0;
> +}
> +
>  static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>  	.hw_params	= sun4i_i2s_hw_params,
>  	.set_fmt	= sun4i_i2s_set_fmt,
>  	.set_sysclk	= sun4i_i2s_set_sysclk,
>  	.trigger	= sun4i_i2s_trigger,
> +	.set_tdm_slot	= sun4i_i2s_set_dai_tdm_slot,

Please sort them by alphabetical order.

Thanks!
Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Patch
diff mbox series

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 329883750d6f..bca73b3c0d74 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -186,6 +186,9 @@  struct sun4i_i2s {
 	struct regmap_field	*field_rxchansel;
 
 	const struct sun4i_i2s_quirks	*variant;
+
+	unsigned int	tdm_slots;
+	unsigned int	slot_width;
 };
 
 struct sun4i_i2s_clk_div {
@@ -337,7 +340,7 @@  static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
 	if (i2s->variant->is_h3_i2s_based)
 		regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG,
 				   SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
-				   SUN8I_I2S_FMT0_LRCK_PERIOD(32));
+				   SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
 
 	/* Set sign extension to pad out LSB with 0 */
 	regmap_field_write(i2s->field_fmt_sext, 0);
@@ -414,7 +417,8 @@  static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
 			   sr + i2s->variant->fmt_offset);
 
 	return sun4i_i2s_set_clk_rate(dai, params_rate(params),
-				      params_width(params));
+				      i2s->tdm_slots ?
+				      i2s->slot_width : params_width(params));
 }
 
 static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
@@ -657,11 +661,25 @@  static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	return 0;
 }
 
+static int sun4i_i2s_set_dai_tdm_slot(struct snd_soc_dai *dai,
+	unsigned int tx_mask, unsigned int rx_mask,
+	int slots, int width)
+{
+	struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+
+	i2s->tdm_slots = slots;
+
+	i2s->slot_width = width;
+
+	return 0;
+}
+
 static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
 	.hw_params	= sun4i_i2s_hw_params,
 	.set_fmt	= sun4i_i2s_set_fmt,
 	.set_sysclk	= sun4i_i2s_set_sysclk,
 	.trigger	= sun4i_i2s_trigger,
+	.set_tdm_slot	= sun4i_i2s_set_dai_tdm_slot,
 };
 
 static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)