[1/3] ASoC: fsl_asrc: Use in(out)put_format instead of in(out)put_word_width
diff mbox series

Message ID 65e96ca15afd4a282b122f3ea8b13642cf4614c7.1568025083.git.shengjiu.wang@nxp.com
State New
Headers show
Series
  • update supported sample format
Related show

Commit Message

Shengjiu Wang Sept. 9, 2019, 10:33 p.m. UTC
snd_pcm_format_t is more formal than enum asrc_word_width, which has
two property, width and physical width, which is more accurate than
enum asrc_word_width. So it is better to use in(out)put_format
instead of in(out)put_word_width.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 sound/soc/fsl/fsl_asrc.c | 56 +++++++++++++++++++++++++++-------------
 sound/soc/fsl/fsl_asrc.h |  4 +--
 2 files changed, 40 insertions(+), 20 deletions(-)

Comments

Nicolin Chen Sept. 9, 2019, 8:01 p.m. UTC | #1
On Mon, Sep 09, 2019 at 06:33:19PM -0400, Shengjiu Wang wrote:
> snd_pcm_format_t is more formal than enum asrc_word_width, which has
> two property, width and physical width, which is more accurate than
> enum asrc_word_width. So it is better to use in(out)put_format
> instead of in(out)put_word_width.

Hmm...I don't really see the benefit of using snd_pcm_format_t
here...I mean, I know it's a generic one, and would understand
if we use it as a param for a common API. But this patch merely
packs the "width" by intentionally using this snd_pcm_format_t
and then adds another translation to unpack it.. I feel it's a
bit overcomplicated. Or am I missing something?

And I feel it's not necessary to use ALSA common format in our
own "struct asrc_config" since it is more IP/register specific. 

Thanks
Nicolin

> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
> ---
>  sound/soc/fsl/fsl_asrc.c | 56 +++++++++++++++++++++++++++-------------
>  sound/soc/fsl/fsl_asrc.h |  4 +--
>  2 files changed, 40 insertions(+), 20 deletions(-)
> 
> diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
> index cfa40ef6b1ca..4d3804a1ea55 100644
> --- a/sound/soc/fsl/fsl_asrc.c
> +++ b/sound/soc/fsl/fsl_asrc.c
> @@ -265,6 +265,8 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
>  	struct asrc_config *config = pair->config;
>  	struct fsl_asrc *asrc_priv = pair->asrc_priv;
>  	enum asrc_pair_index index = pair->index;
> +	enum asrc_word_width input_word_width;
> +	enum asrc_word_width output_word_width;
>  	u32 inrate, outrate, indiv, outdiv;
>  	u32 clk_index[2], div[2];
>  	int in, out, channels;
> @@ -283,9 +285,32 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
>  		return -EINVAL;
>  	}
>  
> -	/* Validate output width */
> -	if (config->output_word_width == ASRC_WIDTH_8_BIT) {
> -		pair_err("does not support 8bit width output\n");
> +	switch (snd_pcm_format_width(config->input_format)) {
> +	case 8:
> +		input_word_width = ASRC_WIDTH_8_BIT;
> +		break;
> +	case 16:
> +		input_word_width = ASRC_WIDTH_16_BIT;
> +		break;
> +	case 24:
> +		input_word_width = ASRC_WIDTH_24_BIT;
> +		break;
> +	default:
> +		pair_err("does not support this input format, %d\n",
> +			 config->input_format);
> +		return -EINVAL;
> +	}
> +
> +	switch (snd_pcm_format_width(config->output_format)) {
> +	case 16:
> +		output_word_width = ASRC_WIDTH_16_BIT;
> +		break;
> +	case 24:
> +		output_word_width = ASRC_WIDTH_24_BIT;
> +		break;
> +	default:
> +		pair_err("does not support this output format, %d\n",
> +			 config->output_format);
>  		return -EINVAL;
>  	}
>  
> @@ -383,8 +408,8 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
>  	/* Implement word_width configurations */
>  	regmap_update_bits(asrc_priv->regmap, REG_ASRMCR1(index),
>  			   ASRMCR1i_OW16_MASK | ASRMCR1i_IWD_MASK,
> -			   ASRMCR1i_OW16(config->output_word_width) |
> -			   ASRMCR1i_IWD(config->input_word_width));
> +			   ASRMCR1i_OW16(output_word_width) |
> +			   ASRMCR1i_IWD(input_word_width));
>  
>  	/* Enable BUFFER STALL */
>  	regmap_update_bits(asrc_priv->regmap, REG_ASRMCR(index),
> @@ -497,13 +522,13 @@ static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
>  				  struct snd_soc_dai *dai)
>  {
>  	struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai);
> -	int width = params_width(params);
>  	struct snd_pcm_runtime *runtime = substream->runtime;
>  	struct fsl_asrc_pair *pair = runtime->private_data;
>  	unsigned int channels = params_channels(params);
>  	unsigned int rate = params_rate(params);
>  	struct asrc_config config;
> -	int word_width, ret;
> +	snd_pcm_format_t format;
> +	int ret;
>  
>  	ret = fsl_asrc_request_pair(channels, pair);
>  	if (ret) {
> @@ -513,15 +538,10 @@ static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
>  
>  	pair->config = &config;
>  
> -	if (width == 16)
> -		width = ASRC_WIDTH_16_BIT;
> -	else
> -		width = ASRC_WIDTH_24_BIT;
> -
>  	if (asrc_priv->asrc_width == 16)
> -		word_width = ASRC_WIDTH_16_BIT;
> +		format = SNDRV_PCM_FORMAT_S16_LE;
>  	else
> -		word_width = ASRC_WIDTH_24_BIT;
> +		format = SNDRV_PCM_FORMAT_S24_LE;
>  
>  	config.pair = pair->index;
>  	config.channel_num = channels;
> @@ -529,13 +549,13 @@ static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
>  	config.outclk = OUTCLK_ASRCK1_CLK;
>  
>  	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
> -		config.input_word_width   = width;
> -		config.output_word_width  = word_width;
> +		config.input_format   = params_format(params);
> +		config.output_format  = format;
>  		config.input_sample_rate  = rate;
>  		config.output_sample_rate = asrc_priv->asrc_rate;
>  	} else {
> -		config.input_word_width   = word_width;
> -		config.output_word_width  = width;
> +		config.input_format   = format;
> +		config.output_format  = params_format(params);
>  		config.input_sample_rate  = asrc_priv->asrc_rate;
>  		config.output_sample_rate = rate;
>  	}
> diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h
> index c60075112570..38af485bdd22 100644
> --- a/sound/soc/fsl/fsl_asrc.h
> +++ b/sound/soc/fsl/fsl_asrc.h
> @@ -342,8 +342,8 @@ struct asrc_config {
>  	unsigned int dma_buffer_size;
>  	unsigned int input_sample_rate;
>  	unsigned int output_sample_rate;
> -	enum asrc_word_width input_word_width;
> -	enum asrc_word_width output_word_width;
> +	snd_pcm_format_t input_format;
> +	snd_pcm_format_t output_format;
>  	enum asrc_inclk inclk;
>  	enum asrc_outclk outclk;
>  };
> -- 
> 2.21.0
>
Shengjiu Wang Sept. 10, 2019, 2:22 a.m. UTC | #2
Hi

> 
> On Mon, Sep 09, 2019 at 06:33:19PM -0400, Shengjiu Wang wrote:
> > snd_pcm_format_t is more formal than enum asrc_word_width, which
> has
> > two property, width and physical width, which is more accurate than
> > enum asrc_word_width. So it is better to use in(out)put_format instead
> > of in(out)put_word_width.
> 
> Hmm...I don't really see the benefit of using snd_pcm_format_t here...I
> mean, I know it's a generic one, and would understand if we use it as a
> param for a common API. But this patch merely packs the "width" by
> intentionally using this snd_pcm_format_t and then adds another
> translation to unpack it.. I feel it's a bit overcomplicated. Or am I missing
> something?
> 
> And I feel it's not necessary to use ALSA common format in our own "struct
> asrc_config" since it is more IP/register specific.
> 
> Thanks
> Nicolin
> 

As you know, we have another M2M function internally, when user want to
Set the format through M2M API, it is better to use snd_pcm_format_t instead the
Width, for snd_pcm_format_t include two property, data with and physical width
In driver some place need data width, some place need physical width.
For example how to distinguish S24_LE and S24_3LE in driver,  DMA setting needs
The physical width,  but ASRC need data width. 

Another purpose is that we have another new designed ASRC, which support more
Formats, I would like it can share same API with this ASRC, using snd_pcm_format_t
That we can use the common API, like snd_pcm_format_linear,
snd_pcm_format_big_endian to get the property of the format, which is needed by
driver.


Best regards
Wang shengjiu
Nicolin Chen Sept. 12, 2019, 11:21 p.m. UTC | #3
On Mon, Sep 09, 2019 at 06:33:19PM -0400, Shengjiu Wang wrote:
> snd_pcm_format_t is more formal than enum asrc_word_width, which has
> two property, width and physical width, which is more accurate than
> enum asrc_word_width. So it is better to use in(out)put_format
> instead of in(out)put_word_width.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>

Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>

> ---
>  sound/soc/fsl/fsl_asrc.c | 56 +++++++++++++++++++++++++++-------------
>  sound/soc/fsl/fsl_asrc.h |  4 +--
>  2 files changed, 40 insertions(+), 20 deletions(-)
> 
> diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
> index cfa40ef6b1ca..4d3804a1ea55 100644
> --- a/sound/soc/fsl/fsl_asrc.c
> +++ b/sound/soc/fsl/fsl_asrc.c
> @@ -265,6 +265,8 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
>  	struct asrc_config *config = pair->config;
>  	struct fsl_asrc *asrc_priv = pair->asrc_priv;
>  	enum asrc_pair_index index = pair->index;
> +	enum asrc_word_width input_word_width;
> +	enum asrc_word_width output_word_width;
>  	u32 inrate, outrate, indiv, outdiv;
>  	u32 clk_index[2], div[2];
>  	int in, out, channels;
> @@ -283,9 +285,32 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
>  		return -EINVAL;
>  	}
>  
> -	/* Validate output width */
> -	if (config->output_word_width == ASRC_WIDTH_8_BIT) {
> -		pair_err("does not support 8bit width output\n");
> +	switch (snd_pcm_format_width(config->input_format)) {
> +	case 8:
> +		input_word_width = ASRC_WIDTH_8_BIT;
> +		break;
> +	case 16:
> +		input_word_width = ASRC_WIDTH_16_BIT;
> +		break;
> +	case 24:
> +		input_word_width = ASRC_WIDTH_24_BIT;
> +		break;
> +	default:
> +		pair_err("does not support this input format, %d\n",
> +			 config->input_format);
> +		return -EINVAL;
> +	}
> +
> +	switch (snd_pcm_format_width(config->output_format)) {
> +	case 16:
> +		output_word_width = ASRC_WIDTH_16_BIT;
> +		break;
> +	case 24:
> +		output_word_width = ASRC_WIDTH_24_BIT;
> +		break;
> +	default:
> +		pair_err("does not support this output format, %d\n",
> +			 config->output_format);
>  		return -EINVAL;
>  	}
>  
> @@ -383,8 +408,8 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
>  	/* Implement word_width configurations */
>  	regmap_update_bits(asrc_priv->regmap, REG_ASRMCR1(index),
>  			   ASRMCR1i_OW16_MASK | ASRMCR1i_IWD_MASK,
> -			   ASRMCR1i_OW16(config->output_word_width) |
> -			   ASRMCR1i_IWD(config->input_word_width));
> +			   ASRMCR1i_OW16(output_word_width) |
> +			   ASRMCR1i_IWD(input_word_width));
>  
>  	/* Enable BUFFER STALL */
>  	regmap_update_bits(asrc_priv->regmap, REG_ASRMCR(index),
> @@ -497,13 +522,13 @@ static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
>  				  struct snd_soc_dai *dai)
>  {
>  	struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai);
> -	int width = params_width(params);
>  	struct snd_pcm_runtime *runtime = substream->runtime;
>  	struct fsl_asrc_pair *pair = runtime->private_data;
>  	unsigned int channels = params_channels(params);
>  	unsigned int rate = params_rate(params);
>  	struct asrc_config config;
> -	int word_width, ret;
> +	snd_pcm_format_t format;
> +	int ret;
>  
>  	ret = fsl_asrc_request_pair(channels, pair);
>  	if (ret) {
> @@ -513,15 +538,10 @@ static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
>  
>  	pair->config = &config;
>  
> -	if (width == 16)
> -		width = ASRC_WIDTH_16_BIT;
> -	else
> -		width = ASRC_WIDTH_24_BIT;
> -
>  	if (asrc_priv->asrc_width == 16)
> -		word_width = ASRC_WIDTH_16_BIT;
> +		format = SNDRV_PCM_FORMAT_S16_LE;
>  	else
> -		word_width = ASRC_WIDTH_24_BIT;
> +		format = SNDRV_PCM_FORMAT_S24_LE;
>  
>  	config.pair = pair->index;
>  	config.channel_num = channels;
> @@ -529,13 +549,13 @@ static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
>  	config.outclk = OUTCLK_ASRCK1_CLK;
>  
>  	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
> -		config.input_word_width   = width;
> -		config.output_word_width  = word_width;
> +		config.input_format   = params_format(params);
> +		config.output_format  = format;
>  		config.input_sample_rate  = rate;
>  		config.output_sample_rate = asrc_priv->asrc_rate;
>  	} else {
> -		config.input_word_width   = word_width;
> -		config.output_word_width  = width;
> +		config.input_format   = format;
> +		config.output_format  = params_format(params);
>  		config.input_sample_rate  = asrc_priv->asrc_rate;
>  		config.output_sample_rate = rate;
>  	}
> diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h
> index c60075112570..38af485bdd22 100644
> --- a/sound/soc/fsl/fsl_asrc.h
> +++ b/sound/soc/fsl/fsl_asrc.h
> @@ -342,8 +342,8 @@ struct asrc_config {
>  	unsigned int dma_buffer_size;
>  	unsigned int input_sample_rate;
>  	unsigned int output_sample_rate;
> -	enum asrc_word_width input_word_width;
> -	enum asrc_word_width output_word_width;
> +	snd_pcm_format_t input_format;
> +	snd_pcm_format_t output_format;
>  	enum asrc_inclk inclk;
>  	enum asrc_outclk outclk;
>  };
> -- 
> 2.21.0
>
Nicolin Chen Sept. 12, 2019, 11:21 p.m. UTC | #4
On Tue, Sep 10, 2019 at 02:22:06AM +0000, S.j. Wang wrote:
> Hi
> 
> > 
> > On Mon, Sep 09, 2019 at 06:33:19PM -0400, Shengjiu Wang wrote:
> > > snd_pcm_format_t is more formal than enum asrc_word_width, which
> > has
> > > two property, width and physical width, which is more accurate than
> > > enum asrc_word_width. So it is better to use in(out)put_format instead
> > > of in(out)put_word_width.
> > 
> > Hmm...I don't really see the benefit of using snd_pcm_format_t here...I
> > mean, I know it's a generic one, and would understand if we use it as a
> > param for a common API. But this patch merely packs the "width" by
> > intentionally using this snd_pcm_format_t and then adds another
> > translation to unpack it.. I feel it's a bit overcomplicated. Or am I missing
> > something?
> > 
> > And I feel it's not necessary to use ALSA common format in our own "struct
> > asrc_config" since it is more IP/register specific.
> > 
> > Thanks
> > Nicolin
> > 
> 
> As you know, we have another M2M function internally, when user want to
> Set the format through M2M API, it is better to use snd_pcm_format_t instead the
> Width, for snd_pcm_format_t include two property, data with and physical width
> In driver some place need data width, some place need physical width.
> For example how to distinguish S24_LE and S24_3LE in driver,  DMA setting needs
> The physical width,  but ASRC need data width. 
> 
> Another purpose is that we have another new designed ASRC, which support more
> Formats, I would like it can share same API with this ASRC, using snd_pcm_format_t
> That we can use the common API, like snd_pcm_format_linear,
> snd_pcm_format_big_endian to get the property of the format, which is needed by
> driver.

I see. Just acked the patch.

Patch
diff mbox series

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index cfa40ef6b1ca..4d3804a1ea55 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -265,6 +265,8 @@  static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
 	struct asrc_config *config = pair->config;
 	struct fsl_asrc *asrc_priv = pair->asrc_priv;
 	enum asrc_pair_index index = pair->index;
+	enum asrc_word_width input_word_width;
+	enum asrc_word_width output_word_width;
 	u32 inrate, outrate, indiv, outdiv;
 	u32 clk_index[2], div[2];
 	int in, out, channels;
@@ -283,9 +285,32 @@  static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
 		return -EINVAL;
 	}
 
-	/* Validate output width */
-	if (config->output_word_width == ASRC_WIDTH_8_BIT) {
-		pair_err("does not support 8bit width output\n");
+	switch (snd_pcm_format_width(config->input_format)) {
+	case 8:
+		input_word_width = ASRC_WIDTH_8_BIT;
+		break;
+	case 16:
+		input_word_width = ASRC_WIDTH_16_BIT;
+		break;
+	case 24:
+		input_word_width = ASRC_WIDTH_24_BIT;
+		break;
+	default:
+		pair_err("does not support this input format, %d\n",
+			 config->input_format);
+		return -EINVAL;
+	}
+
+	switch (snd_pcm_format_width(config->output_format)) {
+	case 16:
+		output_word_width = ASRC_WIDTH_16_BIT;
+		break;
+	case 24:
+		output_word_width = ASRC_WIDTH_24_BIT;
+		break;
+	default:
+		pair_err("does not support this output format, %d\n",
+			 config->output_format);
 		return -EINVAL;
 	}
 
@@ -383,8 +408,8 @@  static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
 	/* Implement word_width configurations */
 	regmap_update_bits(asrc_priv->regmap, REG_ASRMCR1(index),
 			   ASRMCR1i_OW16_MASK | ASRMCR1i_IWD_MASK,
-			   ASRMCR1i_OW16(config->output_word_width) |
-			   ASRMCR1i_IWD(config->input_word_width));
+			   ASRMCR1i_OW16(output_word_width) |
+			   ASRMCR1i_IWD(input_word_width));
 
 	/* Enable BUFFER STALL */
 	regmap_update_bits(asrc_priv->regmap, REG_ASRMCR(index),
@@ -497,13 +522,13 @@  static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
 				  struct snd_soc_dai *dai)
 {
 	struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai);
-	int width = params_width(params);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct fsl_asrc_pair *pair = runtime->private_data;
 	unsigned int channels = params_channels(params);
 	unsigned int rate = params_rate(params);
 	struct asrc_config config;
-	int word_width, ret;
+	snd_pcm_format_t format;
+	int ret;
 
 	ret = fsl_asrc_request_pair(channels, pair);
 	if (ret) {
@@ -513,15 +538,10 @@  static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
 
 	pair->config = &config;
 
-	if (width == 16)
-		width = ASRC_WIDTH_16_BIT;
-	else
-		width = ASRC_WIDTH_24_BIT;
-
 	if (asrc_priv->asrc_width == 16)
-		word_width = ASRC_WIDTH_16_BIT;
+		format = SNDRV_PCM_FORMAT_S16_LE;
 	else
-		word_width = ASRC_WIDTH_24_BIT;
+		format = SNDRV_PCM_FORMAT_S24_LE;
 
 	config.pair = pair->index;
 	config.channel_num = channels;
@@ -529,13 +549,13 @@  static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
 	config.outclk = OUTCLK_ASRCK1_CLK;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		config.input_word_width   = width;
-		config.output_word_width  = word_width;
+		config.input_format   = params_format(params);
+		config.output_format  = format;
 		config.input_sample_rate  = rate;
 		config.output_sample_rate = asrc_priv->asrc_rate;
 	} else {
-		config.input_word_width   = word_width;
-		config.output_word_width  = width;
+		config.input_format   = format;
+		config.output_format  = params_format(params);
 		config.input_sample_rate  = asrc_priv->asrc_rate;
 		config.output_sample_rate = rate;
 	}
diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h
index c60075112570..38af485bdd22 100644
--- a/sound/soc/fsl/fsl_asrc.h
+++ b/sound/soc/fsl/fsl_asrc.h
@@ -342,8 +342,8 @@  struct asrc_config {
 	unsigned int dma_buffer_size;
 	unsigned int input_sample_rate;
 	unsigned int output_sample_rate;
-	enum asrc_word_width input_word_width;
-	enum asrc_word_width output_word_width;
+	snd_pcm_format_t input_format;
+	snd_pcm_format_t output_format;
 	enum asrc_inclk inclk;
 	enum asrc_outclk outclk;
 };