Re: [PATCH v3 1/2] ASoC: Intel: maxim-common: get codec number from ACPI

Re: [PATCH v3 1/2] ASoC: Intel: maxim-common: get codec number from ACPI

[Andy Shevchenko]

On Thu, Jul 27, 2023 at 06:43:53PM +0800, Brent Lu wrote:
> Implement a helper function to get number of codecs from ACPI
> subsystem to remove the need of quirk flag in machine driver.

...

>  static int max_98390_hw_params(struct snd_pcm_substream *substream,
>  			       struct snd_pcm_hw_params *params)
>  {
>  	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
>  	struct snd_soc_dai *codec_dai;
> +	int i, ret = 0;

Redundant assignment.

>  	for_each_rtd_codec_dais(rtd, i, codec_dai) {
> +		if (i >= ARRAY_SIZE(max_98390_tdm_mask)) {
>  			dev_err(codec_dai->dev, "invalid codec index %d\n", i);
>  			return -ENODEV;
>  		}
>  
> +		ret = snd_soc_dai_set_tdm_slot(codec_dai, max_98390_tdm_mask[i].tx,
> +					       max_98390_tdm_mask[i].rx, 4,
> +					       params_width(params));
> +		if (ret < 0) {
> +			dev_err(codec_dai->dev, "fail to set tdm slot, ret %d\n",
> +				ret);
> +			return ret;
>  		}
>  	}
>  	return 0;
>  }

...

> +	case 2:
> +		/* add regular speakers dapm route */
> +		ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
> +					      ARRAY_SIZE(max_98390_dapm_routes));
> +		if (ret) {
> +			dev_err(rtd->dev, "unable to add dapm routes, ret %d\n",
> +				ret);
> +			return ret;
> +		}
> +		break;
> +	default:
> +		dev_err(rtd->dev, "invalid codec number %d\n", num_codecs);

> +		ret = -EINVAL;
> +		break;

You can

		return -EINVAL;

>  	}
> +
>  	return ret;

...

> +#define MAX_98390_ACPI_HID	"MX98390"

> +#define MAX_98390_DEV0_NAME	"i2c-MX98390:00"
> +#define MAX_98390_DEV1_NAME	"i2c-MX98390:01"
> +#define MAX_98390_DEV2_NAME	"i2c-MX98390:02"
> +#define MAX_98390_DEV3_NAME	"i2c-MX98390:03"

Maybe (maybe, don't know subsystem preferences)

#define MAX_98390_DEV0_NAME	"i2c-" MAX_98390_ACPI_HID ":00"
#define MAX_98390_DEV1_NAME	"i2c-" MAX_98390_ACPI_HID ":01"
#define MAX_98390_DEV2_NAME	"i2c-" MAX_98390_ACPI_HID ":02"
#define MAX_98390_DEV3_NAME	"i2c-" MAX_98390_ACPI_HID ":03"

-- 
With Best Regards,
Andy Shevchenko

[PATCH v3 0/2] Intel: sof_rt5682: remove quirk flag

[Brent Lu]

We add a helper function to detect amplifier number according to device instance
in ACPI table so the SOF_MAX98390_TWEETER_SPEAKER_PRESENT flag and a dmi quirk
for 4-amplifier configuration could be safely removed.

Also refactor the max_98390_hw_params() function to use an array to handle the
TDM parameter.

Amplifier number detection and TDM parameter are tested on two Chromebooks. One
with 2 MAX98390 and one with 4 MAX98390 amplifier.

V2 Changes:
- fix some typos in cover letter
- use for_each_acpi_dev_match() macro to simplify the codec
- use 'unsign int' for codec number variable

V3 Changes:
- replace pr_err() with dev_err()

Brent Lu (2):
  ASoC: Intel: maxim-common: get codec number from ACPI
  ASoC: Intel: sof_rt5682: remove SOF_MAX98390_TWEETER_SPEAKER_PRESENT
    flag

 sound/soc/intel/boards/sof_maxim_common.c | 171 +++++++++++++---------
 sound/soc/intel/boards/sof_maxim_common.h |  21 ++-
 sound/soc/intel/boards/sof_rt5682.c       |  37 +----
 3 files changed, 112 insertions(+), 117 deletions(-)

-- 
2.34.1

[PATCH v3 1/2] ASoC: Intel: maxim-common: get codec number from ACPI

[Brent Lu]

Implement a helper function to get number of codecs from ACPI
subsystem to remove the need of quirk flag in machine driver.

Signed-off-by: Brent Lu <brent.lu@intel.com>
---
 sound/soc/intel/boards/sof_maxim_common.c | 171 +++++++++++++---------
 sound/soc/intel/boards/sof_maxim_common.h |  21 ++-
 2 files changed, 110 insertions(+), 82 deletions(-)

diff --git a/sound/soc/intel/boards/sof_maxim_common.c b/sound/soc/intel/boards/sof_maxim_common.c
index 112e89951da0..932c224aaab6 100644
--- a/sound/soc/intel/boards/sof_maxim_common.c
+++ b/sound/soc/intel/boards/sof_maxim_common.c
@@ -4,6 +4,7 @@
 #include <linux/module.h>
 #include <linux/string.h>
 #include <sound/pcm.h>
+#include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/soc-acpi.h>
 #include <sound/soc-dai.h>
@@ -11,6 +12,18 @@
 #include <uapi/sound/asound.h>
 #include "sof_maxim_common.h"
 
+/* helper function to get the number of specific codec */
+static unsigned int get_num_codecs(const char *hid)
+{
+	struct acpi_device *adev;
+	unsigned int dev_num = 0;
+
+	for_each_acpi_dev_match(adev, hid, NULL, -1)
+		dev_num++;
+
+	return dev_num;
+}
+
 #define MAX_98373_PIN_NAME 16
 
 const struct snd_soc_dapm_route max_98373_dapm_routes[] = {
@@ -168,17 +181,6 @@ static struct snd_soc_codec_conf max_98390_codec_conf[] = {
 		.dlc = COMP_CODEC_CONF(MAX_98390_DEV1_NAME),
 		.name_prefix = "Left",
 	},
-};
-
-static struct snd_soc_codec_conf max_98390_4spk_codec_conf[] = {
-	{
-		.dlc = COMP_CODEC_CONF(MAX_98390_DEV0_NAME),
-		.name_prefix = "Right",
-	},
-	{
-		.dlc = COMP_CODEC_CONF(MAX_98390_DEV1_NAME),
-		.name_prefix = "Left",
-	},
 	{
 		.dlc = COMP_CODEC_CONF(MAX_98390_DEV2_NAME),
 		.name_prefix = "Tweeter Right",
@@ -189,19 +191,7 @@ static struct snd_soc_codec_conf max_98390_4spk_codec_conf[] = {
 	},
 };
 
-struct snd_soc_dai_link_component max_98390_components[] = {
-	{
-		.name = MAX_98390_DEV0_NAME,
-		.dai_name = MAX_98390_CODEC_DAI,
-	},
-	{
-		.name = MAX_98390_DEV1_NAME,
-		.dai_name = MAX_98390_CODEC_DAI,
-	},
-};
-EXPORT_SYMBOL_NS(max_98390_components, SND_SOC_INTEL_SOF_MAXIM_COMMON);
-
-struct snd_soc_dai_link_component max_98390_4spk_components[] = {
+static struct snd_soc_dai_link_component max_98390_components[] = {
 	{
 		.name = MAX_98390_DEV0_NAME,
 		.dai_name = MAX_98390_CODEC_DAI,
@@ -219,62 +209,56 @@ struct snd_soc_dai_link_component max_98390_4spk_components[] = {
 		.dai_name = MAX_98390_CODEC_DAI,
 	},
 };
-EXPORT_SYMBOL_NS(max_98390_4spk_components, SND_SOC_INTEL_SOF_MAXIM_COMMON);
+
+static const struct {
+	unsigned int tx;
+	unsigned int rx;
+} max_98390_tdm_mask[] = {
+	{.tx = 0x01, .rx = 0x3},
+	{.tx = 0x02, .rx = 0x3},
+	{.tx = 0x04, .rx = 0x3},
+	{.tx = 0x08, .rx = 0x3},
+};
 
 static int max_98390_hw_params(struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_dai *codec_dai;
-	int i;
+	int i, ret = 0;
 
 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
-		if (i >= ARRAY_SIZE(max_98390_4spk_components)) {
+		if (i >= ARRAY_SIZE(max_98390_tdm_mask)) {
 			dev_err(codec_dai->dev, "invalid codec index %d\n", i);
 			return -ENODEV;
 		}
 
-		if (!strcmp(codec_dai->component->name, MAX_98390_DEV0_NAME)) {
-			/* DEV0 tdm slot configuration Right */
-			snd_soc_dai_set_tdm_slot(codec_dai, 0x01, 3, 4, 32);
-		}
-		if (!strcmp(codec_dai->component->name, MAX_98390_DEV1_NAME)) {
-			/* DEV1 tdm slot configuration Left */
-			snd_soc_dai_set_tdm_slot(codec_dai, 0x02, 3, 4, 32);
-		}
-
-		if (!strcmp(codec_dai->component->name, MAX_98390_DEV2_NAME)) {
-			/* DEVi2 tdm slot configuration Tweeter Right */
-			snd_soc_dai_set_tdm_slot(codec_dai, 0x04, 3, 4, 32);
-		}
-		if (!strcmp(codec_dai->component->name, MAX_98390_DEV3_NAME)) {
-			/* DEV3 tdm slot configuration Tweeter Left */
-			snd_soc_dai_set_tdm_slot(codec_dai, 0x08, 3, 4, 32);
+		ret = snd_soc_dai_set_tdm_slot(codec_dai, max_98390_tdm_mask[i].tx,
+					       max_98390_tdm_mask[i].rx, 4,
+					       params_width(params));
+		if (ret < 0) {
+			dev_err(codec_dai->dev, "fail to set tdm slot, ret %d\n",
+				ret);
+			return ret;
 		}
 	}
 	return 0;
 }
 
-int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd)
+static int max_98390_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_card *card = rtd->card;
+	unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
 	int ret;
 
-	/* add regular speakers dapm route */
-	ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
-				      ARRAY_SIZE(max_98390_dapm_routes));
-	if (ret) {
-		dev_err(rtd->dev, "unable to add Left/Right Speaker dapm, ret %d\n", ret);
-		return ret;
-	}
-
-	/* add widgets/controls/dapm for tweeter speakers */
-	if (acpi_dev_present("MX98390", "3", -1)) {
+	switch (num_codecs) {
+	case 4:
+		/* add widgets/controls/dapm for tweeter speakers */
 		ret = snd_soc_dapm_new_controls(&card->dapm, max_98390_tt_dapm_widgets,
 						ARRAY_SIZE(max_98390_tt_dapm_widgets));
-
 		if (ret) {
-			dev_err(rtd->dev, "unable to add tweeter dapm controls, ret %d\n", ret);
+			dev_err(rtd->dev, "unable to add tweeter dapm widgets, ret %d\n",
+				ret);
 			/* Don't need to add routes if widget addition failed */
 			return ret;
 		}
@@ -282,33 +266,80 @@ int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd)
 		ret = snd_soc_add_card_controls(card, max_98390_tt_kcontrols,
 						ARRAY_SIZE(max_98390_tt_kcontrols));
 		if (ret) {
-			dev_err(rtd->dev, "unable to add tweeter card controls, ret %d\n", ret);
+			dev_err(rtd->dev, "unable to add tweeter controls, ret %d\n",
+				ret);
 			return ret;
 		}
 
 		ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_tt_dapm_routes,
 					      ARRAY_SIZE(max_98390_tt_dapm_routes));
-		if (ret)
-			dev_err(rtd->dev,
-				"unable to add Tweeter Left/Right Speaker dapm, ret %d\n", ret);
+		if (ret) {
+			dev_err(rtd->dev, "unable to add tweeter dapm routes, ret %d\n",
+				ret);
+			return ret;
+		}
+
+		fallthrough;
+	case 2:
+		/* add regular speakers dapm route */
+		ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
+					      ARRAY_SIZE(max_98390_dapm_routes));
+		if (ret) {
+			dev_err(rtd->dev, "unable to add dapm routes, ret %d\n",
+				ret);
+			return ret;
+		}
+		break;
+	default:
+		dev_err(rtd->dev, "invalid codec number %d\n", num_codecs);
+		ret = -EINVAL;
+		break;
 	}
+
 	return ret;
 }
-EXPORT_SYMBOL_NS(max_98390_spk_codec_init, SND_SOC_INTEL_SOF_MAXIM_COMMON);
 
-const struct snd_soc_ops max_98390_ops = {
+static const struct snd_soc_ops max_98390_ops = {
 	.hw_params = max_98390_hw_params,
 };
-EXPORT_SYMBOL_NS(max_98390_ops, SND_SOC_INTEL_SOF_MAXIM_COMMON);
 
-void max_98390_set_codec_conf(struct snd_soc_card *card, int ch)
+void max_98390_dai_link(struct device *dev, struct snd_soc_dai_link *link)
+{
+	unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
+
+	link->codecs = max_98390_components;
+
+	switch (num_codecs) {
+	case 2:
+	case 4:
+		link->num_codecs = num_codecs;
+		break;
+	default:
+		dev_err(dev, "invalid codec number %d for %s\n", num_codecs,
+			MAX_98390_ACPI_HID);
+		break;
+	}
+
+	link->init = max_98390_init;
+	link->ops = &max_98390_ops;
+}
+EXPORT_SYMBOL_NS(max_98390_dai_link, SND_SOC_INTEL_SOF_MAXIM_COMMON);
+
+void max_98390_set_codec_conf(struct device *dev, struct snd_soc_card *card)
 {
-	if (ch == ARRAY_SIZE(max_98390_4spk_codec_conf)) {
-		card->codec_conf = max_98390_4spk_codec_conf;
-		card->num_configs = ARRAY_SIZE(max_98390_4spk_codec_conf);
-	} else {
-		card->codec_conf = max_98390_codec_conf;
-		card->num_configs = ARRAY_SIZE(max_98390_codec_conf);
+	unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
+
+	card->codec_conf = max_98390_codec_conf;
+
+	switch (num_codecs) {
+	case 2:
+	case 4:
+		card->num_configs = num_codecs;
+		break;
+	default:
+		dev_err(dev, "invalid codec number %d for %s\n", num_codecs,
+			MAX_98390_ACPI_HID);
+		break;
 	}
 }
 EXPORT_SYMBOL_NS(max_98390_set_codec_conf, SND_SOC_INTEL_SOF_MAXIM_COMMON);
diff --git a/sound/soc/intel/boards/sof_maxim_common.h b/sound/soc/intel/boards/sof_maxim_common.h
index 7a8c53049e4d..e45d5c846d9e 100644
--- a/sound/soc/intel/boards/sof_maxim_common.h
+++ b/sound/soc/intel/boards/sof_maxim_common.h
@@ -27,18 +27,15 @@ int max_98373_trigger(struct snd_pcm_substream *substream, int cmd);
 /*
  * Maxim MAX98390
  */
-#define MAX_98390_CODEC_DAI     "max98390-aif1"
-#define MAX_98390_DEV0_NAME     "i2c-MX98390:00"
-#define MAX_98390_DEV1_NAME     "i2c-MX98390:01"
-#define MAX_98390_DEV2_NAME     "i2c-MX98390:02"
-#define MAX_98390_DEV3_NAME     "i2c-MX98390:03"
-
-extern struct snd_soc_dai_link_component max_98390_components[2];
-extern struct snd_soc_dai_link_component max_98390_4spk_components[4];
-extern const struct snd_soc_ops max_98390_ops;
-
-void max_98390_set_codec_conf(struct snd_soc_card *card, int ch);
-int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd);
+#define MAX_98390_ACPI_HID	"MX98390"
+#define MAX_98390_CODEC_DAI	"max98390-aif1"
+#define MAX_98390_DEV0_NAME	"i2c-MX98390:00"
+#define MAX_98390_DEV1_NAME	"i2c-MX98390:01"
+#define MAX_98390_DEV2_NAME	"i2c-MX98390:02"
+#define MAX_98390_DEV3_NAME	"i2c-MX98390:03"
+
+void max_98390_dai_link(struct device *dev, struct snd_soc_dai_link *link);
+void max_98390_set_codec_conf(struct device *dev, struct snd_soc_card *card);
 
 /*
  * Maxim MAX98357A/MAX98360A
-- 
2.34.1

[PATCH v3 2/2] ASoC: Intel: sof_rt5682: remove SOF_MAX98390_TWEETER_SPEAKER_PRESENT flag

[Brent Lu]

Remove the SOF_MAX98390_TWEETER_SPEAKER_PRESENT flag from driver since
the number of amplifiers could be queried from ACPI by counting the
device instance.

Signed-off-by: Brent Lu <brent.lu@intel.com>
---
 sound/soc/intel/boards/sof_rt5682.c | 37 ++---------------------------
 1 file changed, 2 insertions(+), 35 deletions(-)

diff --git a/sound/soc/intel/boards/sof_rt5682.c b/sound/soc/intel/boards/sof_rt5682.c
index b4f07bdcf8b4..0af1e0c3a9db 100644
--- a/sound/soc/intel/boards/sof_rt5682.c
+++ b/sound/soc/intel/boards/sof_rt5682.c
@@ -59,7 +59,6 @@
 #define SOF_SSP_BT_OFFLOAD_PRESENT		BIT(22)
 #define SOF_RT5682S_HEADPHONE_CODEC_PRESENT	BIT(23)
 #define SOF_MAX98390_SPEAKER_AMP_PRESENT	BIT(24)
-#define SOF_MAX98390_TWEETER_SPEAKER_PRESENT	BIT(25)
 #define SOF_RT1019_SPEAKER_AMP_PRESENT	BIT(26)
 #define SOF_RT5650_HEADPHONE_CODEC_PRESENT	BIT(27)
 
@@ -195,23 +194,6 @@ static const struct dmi_system_id sof_rt5682_quirk_table[] = {
 					SOF_RT5682_SSP_AMP(2) |
 					SOF_RT5682_NUM_HDMIDEV(4)),
 	},
-	{
-		.callback = sof_rt5682_quirk_cb,
-		.matches = {
-			DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
-			DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98390_ALC5682I_I2S_4SPK"),
-		},
-		.driver_data = (void *)(SOF_RT5682_MCLK_EN |
-					SOF_RT5682_SSP_CODEC(0) |
-					SOF_SPEAKER_AMP_PRESENT |
-					SOF_MAX98390_SPEAKER_AMP_PRESENT |
-					SOF_MAX98390_TWEETER_SPEAKER_PRESENT |
-					SOF_RT5682_SSP_AMP(1) |
-					SOF_RT5682_NUM_HDMIDEV(4) |
-					SOF_BT_OFFLOAD_SSP(2) |
-					SOF_SSP_BT_OFFLOAD_PRESENT),
-
-	},
 	{
 		.callback = sof_rt5682_quirk_cb,
 		.matches = {
@@ -850,17 +832,7 @@ static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
 			sof_rt1011_dai_link(&links[id]);
 		} else if (sof_rt5682_quirk &
 				SOF_MAX98390_SPEAKER_AMP_PRESENT) {
-			if (sof_rt5682_quirk &
-				SOF_MAX98390_TWEETER_SPEAKER_PRESENT) {
-				links[id].codecs = max_98390_4spk_components;
-				links[id].num_codecs = ARRAY_SIZE(max_98390_4spk_components);
-			} else {
-				links[id].codecs = max_98390_components;
-				links[id].num_codecs = ARRAY_SIZE(max_98390_components);
-			}
-			links[id].init = max_98390_spk_codec_init;
-			links[id].ops = &max_98390_ops;
-
+			max_98390_dai_link(dev, &links[id]);
 		} else if (sof_rt5682_quirk & SOF_RT5650_HEADPHONE_CODEC_PRESENT) {
 			links[id].codecs = &rt5650_components[1];
 			links[id].num_codecs = 1;
@@ -1019,12 +991,7 @@ static int sof_audio_probe(struct platform_device *pdev)
 	else if (sof_rt5682_quirk & SOF_RT1015P_SPEAKER_AMP_PRESENT)
 		sof_rt1015p_codec_conf(&sof_audio_card_rt5682);
 	else if (sof_rt5682_quirk & SOF_MAX98390_SPEAKER_AMP_PRESENT) {
-		if (sof_rt5682_quirk & SOF_MAX98390_TWEETER_SPEAKER_PRESENT)
-			max_98390_set_codec_conf(&sof_audio_card_rt5682,
-						 ARRAY_SIZE(max_98390_4spk_components));
-		else
-			max_98390_set_codec_conf(&sof_audio_card_rt5682,
-						 ARRAY_SIZE(max_98390_components));
+		max_98390_set_codec_conf(&pdev->dev, &sof_audio_card_rt5682);
 	}
 
 	if (sof_rt5682_quirk & SOF_SSP_BT_OFFLOAD_PRESENT)
-- 
2.34.1

RE: [PATCH v3 1/2] ASoC: Intel: maxim-common: get codec number from ACPI

[Lu, Brent]

> >  static int max_98390_hw_params(struct snd_pcm_substream *substream,
> >  			       struct snd_pcm_hw_params *params)  {
> >  	struct snd_soc_pcm_runtime *rtd =
> asoc_substream_to_rtd(substream);
> >  	struct snd_soc_dai *codec_dai;
> > +	int i, ret = 0;
> 
> Redundant assignment.
> 
Will fix it in v4 patch.

> 
> Maybe (maybe, don't know subsystem preferences)
> 
> #define MAX_98390_DEV0_NAME	"i2c-" MAX_98390_ACPI_HID ":00"
> #define MAX_98390_DEV1_NAME	"i2c-" MAX_98390_ACPI_HID ":01"
> #define MAX_98390_DEV2_NAME	"i2c-" MAX_98390_ACPI_HID ":02"
> #define MAX_98390_DEV3_NAME	"i2c-" MAX_98390_ACPI_HID ":03"
> 

Will include this change in v4 patch. Thanks for reviewing.

Regards,
Brent