[PATCH 0/3] ASoC: sun4i-i2s: Updates to the driver

[PATCH 0/3] ASoC: sun4i-i2s: Updates to the driver

[codekipper-Re5JQEeQqe8AvxtiuMwx3w]

From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

Hi All,

here is a patch series to add some improvements to the sun4i-i2s driver
found whilst getting slave clocking and hdmi audio working on the newer
SoCs.
This has been tested on a Pine64 using the ES9023 audio POT board
(https://github.com/codekipper/linux-sunxi/commits/upstream)
BR,
CK

Marcus Cooper (3):
  ASoC: sun4i-i2s: Add set_tdm_slot functionality
  ASoC: sun4i-i2s: Do not divide clocks when slave
  ASoC: sun4i-i2s: Add regmap field to sign extend sample

 sound/soc/sunxi/sun4i-i2s.c | 154 ++++++++++++++++++++++++++++----------------
 1 file changed, 100 insertions(+), 54 deletions(-)

-- 
2.16.0

[PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[codekipper-Re5JQEeQqe8AvxtiuMwx3w]

From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 sound/soc/sunxi/sun4i-i2s.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index dca1143c1150..d7a9141514cf 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -96,6 +96,7 @@
 #define SUN8I_I2S_CTRL_BCLK_OUT			BIT(18)
 #define SUN8I_I2S_CTRL_LRCK_OUT			BIT(17)
 
+#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD		(GENMASK(17, 8) >> 8)
 #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK		GENMASK(17, 8)
 #define SUN8I_I2S_FMT0_LRCK_PERIOD(period)	((period - 1) << 8)
 
@@ -193,6 +194,9 @@ 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 {
@@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
 	if (i2s->variant->has_fmt_set_lrck_period)
 		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));
 
 	return 0;
 }
@@ -418,7 +422,8 @@ 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)
@@ -691,6 +696,19 @@ 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,
@@ -698,6 +716,7 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
 	.shutdown	= sun4i_i2s_shutdown,
 	.startup	= sun4i_i2s_startup,
 	.trigger	= sun4i_i2s_trigger,
+	.set_tdm_slot	= sun4i_i2s_set_dai_tdm_slot,
 };
 
 static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)
-- 
2.16.0

Re: [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Chen-Yu Tsai]

On Wed, Jan 24, 2018 at 10:10 PM,  <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>
> 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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  sound/soc/sunxi/sun4i-i2s.c | 23 +++++++++++++++++++++--
>  1 file changed, 21 insertions(+), 2 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index dca1143c1150..d7a9141514cf 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -96,6 +96,7 @@
>  #define SUN8I_I2S_CTRL_BCLK_OUT                        BIT(18)
>  #define SUN8I_I2S_CTRL_LRCK_OUT                        BIT(17)
>
> +#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD         (GENMASK(17, 8) >> 8)
>  #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK                GENMASK(17, 8)
>  #define SUN8I_I2S_FMT0_LRCK_PERIOD(period)     ((period - 1) << 8)
>
> @@ -193,6 +194,9 @@ 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 {
> @@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>         if (i2s->variant->has_fmt_set_lrck_period)
>                 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));
>
>         return 0;
>  }
> @@ -418,7 +422,8 @@ 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)
> @@ -691,6 +696,19 @@ 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;
> +}
> +

IIRC some of the DAI controllers actually support TDM. Would this
change conflict with that in the future?

Thanks
ChenYu

>  static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>         .hw_params      = sun4i_i2s_hw_params,
>         .set_fmt        = sun4i_i2s_set_fmt,
> @@ -698,6 +716,7 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>         .shutdown       = sun4i_i2s_shutdown,
>         .startup        = sun4i_i2s_startup,
>         .trigger        = sun4i_i2s_trigger,
> +       .set_tdm_slot   = sun4i_i2s_set_dai_tdm_slot,
>  };
>
>  static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)
> --
> 2.16.0
>
> --
> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
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Re: [linux-sunxi] [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Code Kipper]

On 29 January 2018 at 02:50, Chen-Yu Tsai <wens@csie.org> wrote:
> On Wed, Jan 24, 2018 at 10:10 PM,  <codekipper@gmail.com> wrote:
>> 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 | 23 +++++++++++++++++++++--
>>  1 file changed, 21 insertions(+), 2 deletions(-)
>>
>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
>> index dca1143c1150..d7a9141514cf 100644
>> --- a/sound/soc/sunxi/sun4i-i2s.c
>> +++ b/sound/soc/sunxi/sun4i-i2s.c
>> @@ -96,6 +96,7 @@
>>  #define SUN8I_I2S_CTRL_BCLK_OUT                        BIT(18)
>>  #define SUN8I_I2S_CTRL_LRCK_OUT                        BIT(17)
>>
>> +#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD         (GENMASK(17, 8) >> 8)
>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK                GENMASK(17, 8)
>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD(period)     ((period - 1) << 8)
>>
>> @@ -193,6 +194,9 @@ 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 {
>> @@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>>         if (i2s->variant->has_fmt_set_lrck_period)
>>                 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));
>>
>>         return 0;
>>  }
>> @@ -418,7 +422,8 @@ 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)
>> @@ -691,6 +696,19 @@ 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;
>> +}
>> +
>
> IIRC some of the DAI controllers actually support TDM. Would this
> change conflict with that in the future?

Hi Wens,
I'm not sure..I was looking for a clean example of being able to
override the number of bclks in the lrclk width and some other
devices(Rpi) were doing it this way.  I open to suggestions,
BR,
CK
>
> Thanks
> ChenYu
>
>>  static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>>         .hw_params      = sun4i_i2s_hw_params,
>>         .set_fmt        = sun4i_i2s_set_fmt,
>> @@ -698,6 +716,7 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>>         .shutdown       = sun4i_i2s_shutdown,
>>         .startup        = sun4i_i2s_startup,
>>         .trigger        = sun4i_i2s_trigger,
>> +       .set_tdm_slot   = sun4i_i2s_set_dai_tdm_slot,
>>  };
>>
>>  static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)
>> --
>> 2.16.0
>>
>> --
>> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
>> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe@googlegroups.com.
>> For more options, visit https://groups.google.com/d/optout.

Re: [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Chen-Yu Tsai]

On Mon, Jan 29, 2018 at 3:34 PM, Code Kipper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> On 29 January 2018 at 02:50, Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org> wrote:
>> On Wed, Jan 24, 2018 at 10:10 PM,  <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>> From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>>
>>> 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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>> ---
>>>  sound/soc/sunxi/sun4i-i2s.c | 23 +++++++++++++++++++++--
>>>  1 file changed, 21 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
>>> index dca1143c1150..d7a9141514cf 100644
>>> --- a/sound/soc/sunxi/sun4i-i2s.c
>>> +++ b/sound/soc/sunxi/sun4i-i2s.c
>>> @@ -96,6 +96,7 @@
>>>  #define SUN8I_I2S_CTRL_BCLK_OUT                        BIT(18)
>>>  #define SUN8I_I2S_CTRL_LRCK_OUT                        BIT(17)
>>>
>>> +#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD         (GENMASK(17, 8) >> 8)
>>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK                GENMASK(17, 8)
>>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD(period)     ((period - 1) << 8)
>>>
>>> @@ -193,6 +194,9 @@ 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 {
>>> @@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>>>         if (i2s->variant->has_fmt_set_lrck_period)
>>>                 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));
>>>
>>>         return 0;
>>>  }
>>> @@ -418,7 +422,8 @@ 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)
>>> @@ -691,6 +696,19 @@ 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;
>>> +}
>>> +
>>
>> IIRC some of the DAI controllers actually support TDM. Would this
>> change conflict with that in the future?
>
> Hi Wens,
> I'm not sure..I was looking for a clean example of being able to
> override the number of bclks in the lrclk width and some other
> devices(Rpi) were doing it this way.  I open to suggestions,

I'm not familiar with the issue either. If Mark doesn't have any
objections, we could merge it for now, and fix it later if there
are any complications.

BTW, you didn't provide a device tree example (if any) for how
to use this.

ChenYu

> BR,
> CK
>>
>> Thanks
>> ChenYu
>>
>>>  static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>>>         .hw_params      = sun4i_i2s_hw_params,
>>>         .set_fmt        = sun4i_i2s_set_fmt,
>>> @@ -698,6 +716,7 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>>>         .shutdown       = sun4i_i2s_shutdown,
>>>         .startup        = sun4i_i2s_startup,
>>>         .trigger        = sun4i_i2s_trigger,
>>> +       .set_tdm_slot   = sun4i_i2s_set_dai_tdm_slot,
>>>  };
>>>
>>>  static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)
>>> --
>>> 2.16.0
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
>>> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>>> For more options, visit https://groups.google.com/d/optout.

Re: [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Code Kipper]

On 29 January 2018 at 08:38, Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org> wrote:
> On Mon, Jan 29, 2018 at 3:34 PM, Code Kipper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> On 29 January 2018 at 02:50, Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org> wrote:
>>> On Wed, Jan 24, 2018 at 10:10 PM,  <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>>> From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>>>
>>>> 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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>>> ---
>>>>  sound/soc/sunxi/sun4i-i2s.c | 23 +++++++++++++++++++++--
>>>>  1 file changed, 21 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
>>>> index dca1143c1150..d7a9141514cf 100644
>>>> --- a/sound/soc/sunxi/sun4i-i2s.c
>>>> +++ b/sound/soc/sunxi/sun4i-i2s.c
>>>> @@ -96,6 +96,7 @@
>>>>  #define SUN8I_I2S_CTRL_BCLK_OUT                        BIT(18)
>>>>  #define SUN8I_I2S_CTRL_LRCK_OUT                        BIT(17)
>>>>
>>>> +#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD         (GENMASK(17, 8) >> 8)
>>>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK                GENMASK(17, 8)
>>>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD(period)     ((period - 1) << 8)
>>>>
>>>> @@ -193,6 +194,9 @@ 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 {
>>>> @@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>>>>         if (i2s->variant->has_fmt_set_lrck_period)
>>>>                 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));
>>>>
>>>>         return 0;
>>>>  }
>>>> @@ -418,7 +422,8 @@ 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)
>>>> @@ -691,6 +696,19 @@ 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;
>>>> +}
>>>> +
>>>
>>> IIRC some of the DAI controllers actually support TDM. Would this
>>> change conflict with that in the future?
>>
>> Hi Wens,
>> I'm not sure..I was looking for a clean example of being able to
>> override the number of bclks in the lrclk width and some other
>> devices(Rpi) were doing it this way.  I open to suggestions,
>
> I'm not familiar with the issue either. If Mark doesn't have any
> objections, we could merge it for now, and fix it later if there
> are any complications.
>
> BTW, you didn't provide a device tree example (if any) for how
> to use this.

Hi Wens,

here is an example that I use for the Pine64 audio hat.
https://github.com/codekipper/linux-sunxi/commit/faa9dfba955bf71ca23b089b1cb678a14443216f#diff-1473a38b339685d191c5a87aab9c0fdfR80

I've done the same on the A64 for HDMI and analog audio which both use
the i2s and seem to require 32bit LRCK width.

BR,
CK

>
> ChenYu
>
>> BR,
>> CK
>>>
>>> Thanks
>>> ChenYu
>>>
>>>>  static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>>>>         .hw_params      = sun4i_i2s_hw_params,
>>>>         .set_fmt        = sun4i_i2s_set_fmt,
>>>> @@ -698,6 +716,7 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>>>>         .shutdown       = sun4i_i2s_shutdown,
>>>>         .startup        = sun4i_i2s_startup,
>>>>         .trigger        = sun4i_i2s_trigger,
>>>> +       .set_tdm_slot   = sun4i_i2s_set_dai_tdm_slot,
>>>>  };
>>>>
>>>>  static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)
>>>> --
>>>> 2.16.0
>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>>>> For more options, visit https://groups.google.com/d/optout.

Re: [linux-sunxi] [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Maxime Ripard]

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On Mon, Jan 29, 2018 at 03:38:40PM +0800, Chen-Yu Tsai wrote:
> On Mon, Jan 29, 2018 at 3:34 PM, Code Kipper <codekipper@gmail.com> wrote:
> > On 29 January 2018 at 02:50, Chen-Yu Tsai <wens@csie.org> wrote:
> >> On Wed, Jan 24, 2018 at 10:10 PM,  <codekipper@gmail.com> wrote:
> >>> 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 | 23 +++++++++++++++++++++--
> >>>  1 file changed, 21 insertions(+), 2 deletions(-)
> >>>
> >>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> >>> index dca1143c1150..d7a9141514cf 100644
> >>> --- a/sound/soc/sunxi/sun4i-i2s.c
> >>> +++ b/sound/soc/sunxi/sun4i-i2s.c
> >>> @@ -96,6 +96,7 @@
> >>>  #define SUN8I_I2S_CTRL_BCLK_OUT                        BIT(18)
> >>>  #define SUN8I_I2S_CTRL_LRCK_OUT                        BIT(17)
> >>>
> >>> +#define SUN8I_I2S_FMT0_LRCK_MAX_PERIOD         (GENMASK(17, 8) >> 8)
> >>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK                GENMASK(17, 8)
> >>>  #define SUN8I_I2S_FMT0_LRCK_PERIOD(period)     ((period - 1) << 8)
> >>>
> >>> @@ -193,6 +194,9 @@ 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 {
> >>> @@ -344,7 +348,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
> >>>         if (i2s->variant->has_fmt_set_lrck_period)
> >>>                 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));
> >>>
> >>>         return 0;
> >>>  }
> >>> @@ -418,7 +422,8 @@ 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)
> >>> @@ -691,6 +696,19 @@ 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;
> >>> +}
> >>> +
> >>
> >> IIRC some of the DAI controllers actually support TDM. Would this
> >> change conflict with that in the future?
> >
> > Hi Wens,
> > I'm not sure..I was looking for a clean example of being able to
> > override the number of bclks in the lrclk width and some other
> > devices(Rpi) were doing it this way.  I open to suggestions,
> 
> I'm not familiar with the issue either. If Mark doesn't have any
> objections, we could merge it for now, and fix it later if there
> are any complications.
> 
> BTW, you didn't provide a device tree example (if any) for how
> to use this.

Could it be that it's just not i2s but some other format?

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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Re: [linux-sunxi] [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Mark Brown]

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On Mon, Jan 29, 2018 at 08:34:00AM +0100, Code Kipper wrote:

> I'm not sure..I was looking for a clean example of being able to
> override the number of bclks in the lrclk width and some other
> devices(Rpi) were doing it this way.  I open to suggestions,

You're looking for set_bclk_ratio() I think.

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Re: [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Code Kipper]

On 29 January 2018 at 12:32, Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> On Mon, Jan 29, 2018 at 08:34:00AM +0100, Code Kipper wrote:
>
>> I'm not sure..I was looking for a clean example of being able to
>> override the number of bclks in the lrclk width and some other
>> devices(Rpi) were doing it this way.  I open to suggestions,
>
> You're looking for set_bclk_ratio() I think.
Hi Mark,
I'm looking for a mechanism to be able to override the bclk width
(usually it's based on param_width) from the device tree. The tdm slot
functionality looked just what I needed.
BR,
CK

Re: [linux-sunxi] [PATCH 1/3] ASoC: sun4i-i2s: Add set_tdm_slot functionality

[Mark Brown]

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On Mon, Jan 29, 2018 at 01:28:51PM +0100, Code Kipper wrote:
> On 29 January 2018 at 12:32, Mark Brown <broonie@kernel.org> wrote:

> > You're looking for set_bclk_ratio() I think.

> I'm looking for a mechanism to be able to override the bclk width
> (usually it's based on param_width) from the device tree. The tdm slot
> functionality looked just what I needed.

The simple and graph cards have support for bclk ratio configuration as
well.

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[PATCH 2/3] ASoC: sun4i-i2s: Do not divide clocks when slave

[codekipper-Re5JQEeQqe8AvxtiuMwx3w]

From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

There is no need to set the clock and calculate the division of
the audio pll for the bclk and sync signals when they are not
required.

Signed-off-by: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 sound/soc/sunxi/sun4i-i2s.c | 116 ++++++++++++++++++++++++--------------------
 1 file changed, 64 insertions(+), 52 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index d7a9141514cf..626679057d0f 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -195,6 +195,8 @@ struct sun4i_i2s {
 
 	const struct sun4i_i2s_quirks	*variant;
 
+	bool bit_clk_master;
+
 	unsigned int	tdm_slots;
 	unsigned int	slot_width;
 };
@@ -282,67 +284,73 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
 	int bclk_div, mclk_div;
 	int ret;
 
-	switch (rate) {
-	case 176400:
-	case 88200:
-	case 44100:
-	case 22050:
-	case 11025:
-		clk_rate = 22579200;
-		break;
+	if (i2s->bit_clk_master) {
+		switch (rate) {
+		case 176400:
+		case 88200:
+		case 44100:
+		case 22050:
+		case 11025:
+			clk_rate = 22579200;
+			break;
 
-	case 192000:
-	case 128000:
-	case 96000:
-	case 64000:
-	case 48000:
-	case 32000:
-	case 24000:
-	case 16000:
-	case 12000:
-	case 8000:
-		clk_rate = 24576000;
-		break;
+		case 192000:
+		case 128000:
+		case 96000:
+		case 64000:
+		case 48000:
+		case 32000:
+		case 24000:
+		case 16000:
+		case 12000:
+		case 8000:
+			clk_rate = 24576000;
+			break;
 
-	default:
-		dev_err(dai->dev, "Unsupported sample rate: %u\n", rate);
-		return -EINVAL;
-	}
+		default:
+			dev_err(dai->dev, "Unsupported sample rate: %u\n", rate);
+			return -EINVAL;
+		}
 
-	ret = clk_set_rate(i2s->mod_clk, clk_rate);
-	if (ret)
-		return ret;
+		ret = clk_set_rate(i2s->mod_clk, clk_rate);
+		if (ret) {
+			dev_err(dai->dev, "Unable to set clock\n");
+			return ret;
+		}
 
-	oversample_rate = i2s->mclk_freq / rate;
-	if (!sun4i_i2s_oversample_is_valid(oversample_rate)) {
-		dev_err(dai->dev, "Unsupported oversample rate: %d\n",
-			oversample_rate);
-		return -EINVAL;
-	}
+		oversample_rate = i2s->mclk_freq / rate;
+		if (!sun4i_i2s_oversample_is_valid(oversample_rate)) {
+			dev_err(dai->dev, "Unsupported oversample rate: %d\n",
+				oversample_rate);
+			return -EINVAL;
+		}
 
-	bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate,
-					  word_size);
-	if (bclk_div < 0) {
-		dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div);
-		return -EINVAL;
-	}
+		bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate,
+						  word_size);
+		if (bclk_div < 0) {
+			dev_err(dai->dev, "Unsupported BCLK divider: %d\n",
+				bclk_div);
+			return -EINVAL;
+		}
 
-	mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate,
-					  clk_rate, rate);
-	if (mclk_div < 0) {
-		dev_err(dai->dev, "Unsupported MCLK divider: %d\n", mclk_div);
-		return -EINVAL;
-	}
+		mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate,
+						  clk_rate, rate);
+		if (mclk_div < 0) {
+			dev_err(dai->dev, "Unsupported MCLK divider: %d\n",
+				mclk_div);
+			return -EINVAL;
+		}
 
-	/* Adjust the clock division values if needed */
-	bclk_div += i2s->variant->bclk_offset;
-	mclk_div += i2s->variant->mclk_offset;
+		/* Adjust the clock division values if needed */
+		bclk_div += i2s->variant->bclk_offset;
+		mclk_div += i2s->variant->mclk_offset;
 
-	regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG,
-		     SUN4I_I2S_CLK_DIV_BCLK(bclk_div) |
-		     SUN4I_I2S_CLK_DIV_MCLK(mclk_div));
+		regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG,
+			     SUN4I_I2S_CLK_DIV_BCLK(bclk_div) |
+			     SUN4I_I2S_CLK_DIV_MCLK(mclk_div));
 
-	regmap_field_write(i2s->field_clkdiv_mclk_en, 1);
+		regmap_field_write(i2s->field_clkdiv_mclk_en, 1);
+	}
 
 	/* Set sync period */
 	if (i2s->variant->has_fmt_set_lrck_period)
@@ -501,10 +509,12 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 		case SND_SOC_DAIFMT_CBS_CFS:
 			/* BCLK and LRCLK master */
 			val = SUN4I_I2S_CTRL_MODE_MASTER;
+			i2s->bit_clk_master = true;
 			break;
 		case SND_SOC_DAIFMT_CBM_CFM:
 			/* BCLK and LRCLK slave */
 			val = SUN4I_I2S_CTRL_MODE_SLAVE;
+			i2s->bit_clk_master = false;
 			break;
 		default:
 			dev_err(dai->dev, "Unsupported slave setting: %d\n",
@@ -525,10 +535,12 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 			/* BCLK and LRCLK master */
 			val = SUN8I_I2S_CTRL_BCLK_OUT |
 				SUN8I_I2S_CTRL_LRCK_OUT;
+			i2s->bit_clk_master = true;
 			break;
 		case SND_SOC_DAIFMT_CBM_CFM:
 			/* BCLK and LRCLK slave */
 			val = 0;
+			i2s->bit_clk_master = false;
 			break;
 		default:
 			dev_err(dai->dev, "Unsupported slave setting: %d\n",
-- 
2.16.0

Re: [PATCH 2/3] ASoC: sun4i-i2s: Do not divide clocks when slave

[Chen-Yu Tsai]

On Wed, Jan 24, 2018 at 10:11 PM,  <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

Subject is slightly hard to read.

ASoC: sun4i-i2s: Do not divide clocks when acting as slave

would be easier to understand.

>
> There is no need to set the clock and calculate the division of
> the audio pll for the bclk and sync signals when they are not
> required.
>
> Signed-off-by: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  sound/soc/sunxi/sun4i-i2s.c | 116 ++++++++++++++++++++++++--------------------
>  1 file changed, 64 insertions(+), 52 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index d7a9141514cf..626679057d0f 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -195,6 +195,8 @@ struct sun4i_i2s {
>
>         const struct sun4i_i2s_quirks   *variant;
>
> +       bool bit_clk_master;
> +
>         unsigned int    tdm_slots;
>         unsigned int    slot_width;
>  };
> @@ -282,67 +284,73 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>         int bclk_div, mclk_div;
>         int ret;
>
> -       switch (rate) {
> -       case 176400:
> -       case 88200:
> -       case 44100:
> -       case 22050:
> -       case 11025:
> -               clk_rate = 22579200;
> -               break;
> +       if (i2s->bit_clk_master) {
> +               switch (rate) {
> +               case 176400:
> +               case 88200:
> +               case 44100:
> +               case 22050:
> +               case 11025:
> +                       clk_rate = 22579200;
> +                       break;
>
> -       case 192000:
> -       case 128000:
> -       case 96000:
> -       case 64000:
> -       case 48000:
> -       case 32000:
> -       case 24000:
> -       case 16000:
> -       case 12000:
> -       case 8000:
> -               clk_rate = 24576000;
> -               break;
> +               case 192000:
> +               case 128000:
> +               case 96000:
> +               case 64000:
> +               case 48000:
> +               case 32000:
> +               case 24000:
> +               case 16000:
> +               case 12000:
> +               case 8000:
> +                       clk_rate = 24576000;
> +                       break;
>
> -       default:
> -               dev_err(dai->dev, "Unsupported sample rate: %u\n", rate);
> -               return -EINVAL;
> -       }
> +               default:
> +                       dev_err(dai->dev, "Unsupported sample rate: %u\n", rate);
> +                       return -EINVAL;
> +               }
>
> -       ret = clk_set_rate(i2s->mod_clk, clk_rate);
> -       if (ret)
> -               return ret;
> +               ret = clk_set_rate(i2s->mod_clk, clk_rate);
> +               if (ret) {
> +                       dev_err(dai->dev, "Unable to set clock\n");
> +                       return ret;
> +               }
>
> -       oversample_rate = i2s->mclk_freq / rate;
> -       if (!sun4i_i2s_oversample_is_valid(oversample_rate)) {
> -               dev_err(dai->dev, "Unsupported oversample rate: %d\n",
> -                       oversample_rate);
> -               return -EINVAL;
> -       }
> +               oversample_rate = i2s->mclk_freq / rate;
> +               if (!sun4i_i2s_oversample_is_valid(oversample_rate)) {
> +                       dev_err(dai->dev, "Unsupported oversample rate: %d\n",
> +                               oversample_rate);
> +                       return -EINVAL;
> +               }
>
> -       bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate,
> -                                         word_size);
> -       if (bclk_div < 0) {
> -               dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div);
> -               return -EINVAL;
> -       }
> +               bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate,
> +                                                 word_size);
> +               if (bclk_div < 0) {
> +                       dev_err(dai->dev, "Unsupported BCLK divider: %d\n",
> +                               bclk_div);
> +                       return -EINVAL;
> +               }
>
> -       mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate,
> -                                         clk_rate, rate);
> -       if (mclk_div < 0) {
> -               dev_err(dai->dev, "Unsupported MCLK divider: %d\n", mclk_div);
> -               return -EINVAL;
> -       }
> +               mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate,
> +                                                 clk_rate, rate);
> +               if (mclk_div < 0) {
> +                       dev_err(dai->dev, "Unsupported MCLK divider: %d\n",
> +                               mclk_div);
> +                       return -EINVAL;
> +               }
>
> -       /* Adjust the clock division values if needed */
> -       bclk_div += i2s->variant->bclk_offset;
> -       mclk_div += i2s->variant->mclk_offset;
> +               /* Adjust the clock division values if needed */
> +               bclk_div += i2s->variant->bclk_offset;
> +               mclk_div += i2s->variant->mclk_offset;
>
> -       regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG,
> -                    SUN4I_I2S_CLK_DIV_BCLK(bclk_div) |
> -                    SUN4I_I2S_CLK_DIV_MCLK(mclk_div));
> +               regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG,
> +                            SUN4I_I2S_CLK_DIV_BCLK(bclk_div) |
> +                            SUN4I_I2S_CLK_DIV_MCLK(mclk_div));
>
> -       regmap_field_write(i2s->field_clkdiv_mclk_en, 1);
> +               regmap_field_write(i2s->field_clkdiv_mclk_en, 1);
> +       }

The changed block is so long that it seems better to split it out
into a helper function that doesn't get called when the controller
isn't the BCLK master. Or you could move the last "Set sync period"
block up top, and do an early return if it's not the master. Either
way I think it's better than having a large indented block.

On the other hand, do the settings need to be cleared if it's the
slave?

ChenYu

>
>         /* Set sync period */
>         if (i2s->variant->has_fmt_set_lrck_period)
> @@ -501,10 +509,12 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
>                 case SND_SOC_DAIFMT_CBS_CFS:
>                         /* BCLK and LRCLK master */
>                         val = SUN4I_I2S_CTRL_MODE_MASTER;
> +                       i2s->bit_clk_master = true;
>                         break;
>                 case SND_SOC_DAIFMT_CBM_CFM:
>                         /* BCLK and LRCLK slave */
>                         val = SUN4I_I2S_CTRL_MODE_SLAVE;
> +                       i2s->bit_clk_master = false;
>                         break;
>                 default:
>                         dev_err(dai->dev, "Unsupported slave setting: %d\n",
> @@ -525,10 +535,12 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
>                         /* BCLK and LRCLK master */
>                         val = SUN8I_I2S_CTRL_BCLK_OUT |
>                                 SUN8I_I2S_CTRL_LRCK_OUT;
> +                       i2s->bit_clk_master = true;
>                         break;
>                 case SND_SOC_DAIFMT_CBM_CFM:
>                         /* BCLK and LRCLK slave */
>                         val = 0;
> +                       i2s->bit_clk_master = false;
>                         break;
>                 default:
>                         dev_err(dai->dev, "Unsupported slave setting: %d\n",
> --
> 2.16.0
>
> --
> You received this message because you are subscribed to the Google Groups "linux-sunxi" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
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[PATCH 3/3] ASoC: sun4i-i2s: Add regmap field to sign extend sample

[codekipper-Re5JQEeQqe8AvxtiuMwx3w]

From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

On the newer SoCs this is set by default to transfer a 0 after
each sample in each slot. Add the regmap field to configure this
and set it so that it pads the sample with 0s.

Signed-off-by: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 sound/soc/sunxi/sun4i-i2s.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 626679057d0f..9fda1240b717 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -139,6 +139,7 @@
  * @field_fmt_bclk: regmap field to set clk polarity.
  * @field_fmt_lrclk: regmap field to set frame polarity.
  * @field_fmt_mode: regmap field to set the operational mode.
+ * @field_fmt_sext: regmap field to set the sign extension.
  * @field_txchanmap: location of the tx channel mapping register.
  * @field_rxchanmap: location of the rx channel mapping register.
  * @field_txchansel: location of the tx channel select bit fields.
@@ -164,6 +165,7 @@ struct sun4i_i2s_quirks {
 	struct reg_field		field_fmt_bclk;
 	struct reg_field		field_fmt_lrclk;
 	struct reg_field		field_fmt_mode;
+	struct reg_field		field_fmt_sext;
 	struct reg_field		field_txchanmap;
 	struct reg_field		field_rxchanmap;
 	struct reg_field		field_txchansel;
@@ -188,6 +190,7 @@ struct sun4i_i2s {
 	struct regmap_field	*field_fmt_bclk;
 	struct regmap_field	*field_fmt_lrclk;
 	struct regmap_field	*field_fmt_mode;
+	struct regmap_field	*field_fmt_sext;
 	struct regmap_field	*field_txchanmap;
 	struct regmap_field	*field_rxchanmap;
 	struct regmap_field	*field_txchansel;
@@ -358,6 +361,9 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
 				   SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
 				   SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
 
+	/* Set sign extension to pad out LSB with 0 */
+	regmap_field_write(i2s->field_fmt_sext, 0);
+
 	return 0;
 }
 
@@ -929,6 +935,7 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
 	.field_fmt_lrclk	= REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
 	.has_slave_select_bit	= true,
 	.field_fmt_mode		= REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
+	.field_fmt_sext		= REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
 	.field_txchanmap	= REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
 	.field_rxchanmap	= REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
 	.field_txchansel	= REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
@@ -946,6 +953,7 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
 	.field_fmt_lrclk	= REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
 	.has_slave_select_bit	= true,
 	.field_fmt_mode		= REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
+	.field_fmt_sext		= REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
 	.field_txchanmap	= REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
 	.field_rxchanmap	= REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
 	.field_txchansel	= REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
@@ -986,6 +994,7 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
 	.field_fmt_bclk		= REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
 	.field_fmt_lrclk	= REG_FIELD(SUN4I_I2S_FMT0_REG, 19, 19),
 	.field_fmt_mode		= REG_FIELD(SUN4I_I2S_CTRL_REG, 4, 5),
+	.field_fmt_sext		= REG_FIELD(SUN4I_I2S_FMT1_REG, 4, 5),
 	.field_txchanmap	= REG_FIELD(SUN8I_I2S_TX_CHAN_MAP_REG, 0, 31),
 	.field_rxchanmap	= REG_FIELD(SUN8I_I2S_RX_CHAN_MAP_REG, 0, 31),
 	.field_txchansel	= REG_FIELD(SUN8I_I2S_TX_CHAN_SEL_REG, 0, 2),
@@ -1031,6 +1040,12 @@ static int sun4i_i2s_init_regmap_fields(struct device *dev,
 	if (IS_ERR(i2s->field_fmt_mode))
 		return PTR_ERR(i2s->field_fmt_mode);
 
+	i2s->field_fmt_sext =
+			devm_regmap_field_alloc(dev, i2s->regmap,
+						i2s->variant->field_fmt_sext);
+	if (IS_ERR(i2s->field_fmt_sext))
+		return PTR_ERR(i2s->field_fmt_sext);
+
 	i2s->field_txchanmap =
 			devm_regmap_field_alloc(dev, i2s->regmap,
 						i2s->variant->field_txchanmap);
-- 
2.16.0

Re: [PATCH 3/3] ASoC: sun4i-i2s: Add regmap field to sign extend sample

[Code Kipper]

On 24 January 2018 at 15:11,  <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> From: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>
> On the newer SoCs this is set by default to transfer a 0 after
> each sample in each slot. Add the regmap field to configure this
> and set it so that it pads the sample with 0s.
>
> Signed-off-by: Marcus Cooper <codekipper-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
NACK missing regmap field from A83t.
CK
> ---
>  sound/soc/sunxi/sun4i-i2s.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index 626679057d0f..9fda1240b717 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -139,6 +139,7 @@
>   * @field_fmt_bclk: regmap field to set clk polarity.
>   * @field_fmt_lrclk: regmap field to set frame polarity.
>   * @field_fmt_mode: regmap field to set the operational mode.
> + * @field_fmt_sext: regmap field to set the sign extension.
>   * @field_txchanmap: location of the tx channel mapping register.
>   * @field_rxchanmap: location of the rx channel mapping register.
>   * @field_txchansel: location of the tx channel select bit fields.
> @@ -164,6 +165,7 @@ struct sun4i_i2s_quirks {
>         struct reg_field                field_fmt_bclk;
>         struct reg_field                field_fmt_lrclk;
>         struct reg_field                field_fmt_mode;
> +       struct reg_field                field_fmt_sext;
>         struct reg_field                field_txchanmap;
>         struct reg_field                field_rxchanmap;
>         struct reg_field                field_txchansel;
> @@ -188,6 +190,7 @@ struct sun4i_i2s {
>         struct regmap_field     *field_fmt_bclk;
>         struct regmap_field     *field_fmt_lrclk;
>         struct regmap_field     *field_fmt_mode;
> +       struct regmap_field     *field_fmt_sext;
>         struct regmap_field     *field_txchanmap;
>         struct regmap_field     *field_rxchanmap;
>         struct regmap_field     *field_txchansel;
> @@ -358,6 +361,9 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>                                    SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
>                                    SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
>
> +       /* Set sign extension to pad out LSB with 0 */
> +       regmap_field_write(i2s->field_fmt_sext, 0);
> +
>         return 0;
>  }
>
> @@ -929,6 +935,7 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
>         .field_fmt_lrclk        = REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
>         .has_slave_select_bit   = true,
>         .field_fmt_mode         = REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
> +       .field_fmt_sext         = REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
>         .field_txchanmap        = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
>         .field_rxchanmap        = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
>         .field_txchansel        = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
> @@ -946,6 +953,7 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
>         .field_fmt_lrclk        = REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
>         .has_slave_select_bit   = true,
>         .field_fmt_mode         = REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
> +       .field_fmt_sext         = REG_FIELD(SUN4I_I2S_FMT1_REG, 8, 8),
>         .field_txchanmap        = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
>         .field_rxchanmap        = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
>         .field_txchansel        = REG_FIELD(SUN4I_I2S_TX_CHAN_SEL_REG, 0, 2),
> @@ -986,6 +994,7 @@ static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
>         .field_fmt_bclk         = REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
>         .field_fmt_lrclk        = REG_FIELD(SUN4I_I2S_FMT0_REG, 19, 19),
>         .field_fmt_mode         = REG_FIELD(SUN4I_I2S_CTRL_REG, 4, 5),
> +       .field_fmt_sext         = REG_FIELD(SUN4I_I2S_FMT1_REG, 4, 5),
>         .field_txchanmap        = REG_FIELD(SUN8I_I2S_TX_CHAN_MAP_REG, 0, 31),
>         .field_rxchanmap        = REG_FIELD(SUN8I_I2S_RX_CHAN_MAP_REG, 0, 31),
>         .field_txchansel        = REG_FIELD(SUN8I_I2S_TX_CHAN_SEL_REG, 0, 2),
> @@ -1031,6 +1040,12 @@ static int sun4i_i2s_init_regmap_fields(struct device *dev,
>         if (IS_ERR(i2s->field_fmt_mode))
>                 return PTR_ERR(i2s->field_fmt_mode);
>
> +       i2s->field_fmt_sext =
> +                       devm_regmap_field_alloc(dev, i2s->regmap,
> +                                               i2s->variant->field_fmt_sext);
> +       if (IS_ERR(i2s->field_fmt_sext))
> +               return PTR_ERR(i2s->field_fmt_sext);
> +
>         i2s->field_txchanmap =
>                         devm_regmap_field_alloc(dev, i2s->regmap,
>                                                 i2s->variant->field_txchanmap);
> --
> 2.16.0
>

Re: [PATCH 3/3] ASoC: sun4i-i2s: Add regmap field to sign extend sample

[Maxime Ripard]

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Hi,

On Wed, Jan 24, 2018 at 03:11:01PM +0100, codekipper@gmail.com wrote:
> From: Marcus Cooper <codekipper@gmail.com>
> 
> On the newer SoCs this is set by default to transfer a 0 after
> each sample in each slot. Add the regmap field to configure this
> and set it so that it pads the sample with 0s.
> 
> Signed-off-by: Marcus Cooper <codekipper@gmail.com>
> ---
>  sound/soc/sunxi/sun4i-i2s.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index 626679057d0f..9fda1240b717 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -139,6 +139,7 @@
>   * @field_fmt_bclk: regmap field to set clk polarity.
>   * @field_fmt_lrclk: regmap field to set frame polarity.
>   * @field_fmt_mode: regmap field to set the operational mode.
> + * @field_fmt_sext: regmap field to set the sign extension.
>   * @field_txchanmap: location of the tx channel mapping register.
>   * @field_rxchanmap: location of the rx channel mapping register.
>   * @field_txchansel: location of the tx channel select bit fields.
> @@ -164,6 +165,7 @@ struct sun4i_i2s_quirks {
>  	struct reg_field		field_fmt_bclk;
>  	struct reg_field		field_fmt_lrclk;
>  	struct reg_field		field_fmt_mode;
> +	struct reg_field		field_fmt_sext;
>  	struct reg_field		field_txchanmap;
>  	struct reg_field		field_rxchanmap;
>  	struct reg_field		field_txchansel;
> @@ -188,6 +190,7 @@ struct sun4i_i2s {
>  	struct regmap_field	*field_fmt_bclk;
>  	struct regmap_field	*field_fmt_lrclk;
>  	struct regmap_field	*field_fmt_mode;
> +	struct regmap_field	*field_fmt_sext;
>  	struct regmap_field	*field_txchanmap;
>  	struct regmap_field	*field_rxchanmap;
>  	struct regmap_field	*field_txchansel;
> @@ -358,6 +361,9 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>  				   SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
>  				   SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
>  
> +	/* Set sign extension to pad out LSB with 0 */
> +	regmap_field_write(i2s->field_fmt_sext, 0);
> +

Your commit log seems to suggest that it's only relevant for the newer
SoCs (which ones?), yet you enable it for all the supported
ones. Either the code or the commit log should be adjusted to be
consistent with the other.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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Re: [PATCH 3/3] ASoC: sun4i-i2s: Add regmap field to sign extend sample

[Code Kipper]

On 25 January 2018 at 09:41, Maxime Ripard
<maxime.ripard@free-electrons.com> wrote:
> Hi,
>
> On Wed, Jan 24, 2018 at 03:11:01PM +0100, codekipper@gmail.com wrote:
>> From: Marcus Cooper <codekipper@gmail.com>
>>
>> On the newer SoCs this is set by default to transfer a 0 after
>> each sample in each slot. Add the regmap field to configure this
>> and set it so that it pads the sample with 0s.
>>
>> Signed-off-by: Marcus Cooper <codekipper@gmail.com>
>> ---
>>  sound/soc/sunxi/sun4i-i2s.c | 15 +++++++++++++++
>>  1 file changed, 15 insertions(+)
>>
>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
>> index 626679057d0f..9fda1240b717 100644
>> --- a/sound/soc/sunxi/sun4i-i2s.c
>> +++ b/sound/soc/sunxi/sun4i-i2s.c
>> @@ -139,6 +139,7 @@
>>   * @field_fmt_bclk: regmap field to set clk polarity.
>>   * @field_fmt_lrclk: regmap field to set frame polarity.
>>   * @field_fmt_mode: regmap field to set the operational mode.
>> + * @field_fmt_sext: regmap field to set the sign extension.
>>   * @field_txchanmap: location of the tx channel mapping register.
>>   * @field_rxchanmap: location of the rx channel mapping register.
>>   * @field_txchansel: location of the tx channel select bit fields.
>> @@ -164,6 +165,7 @@ struct sun4i_i2s_quirks {
>>       struct reg_field                field_fmt_bclk;
>>       struct reg_field                field_fmt_lrclk;
>>       struct reg_field                field_fmt_mode;
>> +     struct reg_field                field_fmt_sext;
>>       struct reg_field                field_txchanmap;
>>       struct reg_field                field_rxchanmap;
>>       struct reg_field                field_txchansel;
>> @@ -188,6 +190,7 @@ struct sun4i_i2s {
>>       struct regmap_field     *field_fmt_bclk;
>>       struct regmap_field     *field_fmt_lrclk;
>>       struct regmap_field     *field_fmt_mode;
>> +     struct regmap_field     *field_fmt_sext;
>>       struct regmap_field     *field_txchanmap;
>>       struct regmap_field     *field_rxchanmap;
>>       struct regmap_field     *field_txchansel;
>> @@ -358,6 +361,9 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai,
>>                                  SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
>>                                  SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
>>
>> +     /* Set sign extension to pad out LSB with 0 */
>> +     regmap_field_write(i2s->field_fmt_sext, 0);
>> +
>
> Your commit log seems to suggest that it's only relevant for the newer
> SoCs (which ones?), yet you enable it for all the supported
> ones. Either the code or the commit log should be adjusted to be
> consistent with the other.
ACK
Thanks,
CK
>
> Maxime
>
> --
> Maxime Ripard, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com