On 8/6/19 4:11 AM, Chiang, Mac wrote:

...

...

-config SND_SOC_INTEL_KBL_DA7219_MAX98357A_MACH

• tristate "KBL with DA7219 and MAX98357A in I2S Mode"
• depends on I2C && ACPI
• depends on MFD_INTEL_LPSS || COMPILE_TEST
• select SND_SOC_DA7219
• select SND_SOC_MAX98357A
• select SND_SOC_DMIC
• select SND_SOC_HDAC_HDMI
• help

•  This adds support for ASoC Onboard Codec I2S machine driver. This
  

will

...

•  create an alsa sound card for DA7219 + MAX98357A I2S audio codec.
  

•  Say Y if you have such a device.
  

• config SND_SOC_INTEL_KBL_DA7219_MAX98927_MACH tristate "KBL with DA7219 and MAX98927 in I2S Mode" depends on I2C && ACPI

@@ -363,6 +350,24 @@ config SND_SOC_INTEL_KBL_RT5660_MACH

endif ## SND_SOC_INTEL_KBL

+if SND_SOC_INTEL_KBL || SND_SOC_SOF_COMETLAKE_LP

+config SND_SOC_INTEL_KBL_DA7219_MAX98357A_MACH

• tristate "KBL with DA7219 and MAX98357A in I2S Mode"
• depends on I2C && ACPI
• depends on MFD_INTEL_LPSS || COMPILE_TEST
• select SND_SOC_DA7219
• select SND_SOC_MAX98357A
• select SND_SOC_DMIC
• select SND_SOC_HDAC_HDMI
• help

•  This adds support for ASoC Onboard Codec I2S machine driver. This
  

will

...

•  create an alsa sound card for DA7219 + MAX98357A I2S audio codec
  

for

...

•  Kabylake/Cometlake platforms.
  

•  Say Y if you have such a device.
  

+endif ## SND_SOC_INTEL_KBL || SND_SOC_SOF_COMETLAKE_LP

We should not mix generations and SST/SOF drivers like this, it's not going to be maintainable.

What you can do is have a common hidden option such as

config SND_SOC_INTEL_DA7219_MAX98357A_GENERIC tristate select SND_SOC_DA7219 select SND_SOC_MAX98357A select SND_SOC_DMIC select SND_SOC_HDAC_HDMI

if SND_SOC_INTEL_KBL config SND_SOC_INTEL_KBL_DA7219_MAX98357A_MACH tristate "KBL with DA7219 and MAX98357A in I2S Mode" depends on I2C && ACPI depends on MFD_INTEL_LPSS || COMPILE_TEST select SND_SOC_INTEL_DA7219_MAX98357A_GENERIC endif

if SND_SOC_SOF_COMETLAKE_LP config SND_SOC_INTEL_CML_LP_DA7219_MAX98357A_MACH tristate "CML_LP with DA7219 and MAX98357A in I2S Mode" depends on I2C && ACPI depends on MFD_INTEL_LPSS || COMPILE_TEST select SND_SOC_INTEL_DA7219_MAX98357A_GENERIC endif

The other problem I have with this patch is that there are two existing machine drivers with almost the same configuration: bxt_da7219_max98357a kbl_da7219_max98357a

Why did you pick the latter? The bxt_da7219_max98357a already supports BXT and GLK, and works with SOF, and it wouldn't be that difficult to extend further. And if you add CML_LP, then we could longer term make the KBL-specific machine driver go away.

We really need to stop all this incremental work and reuse machine drivers when the only differences are clock values (24/19.2) and SSP indices.

I stop here, not even looking at code differences until we have an agreed direction on code reuse.

[Chiang, Mac] I agree and will submit the code changes in reusing of bxt_da7219_max98357a. One question, when reusing bxt_da7219_max98357a, I found the CML cpu_id using "INTEL_FAM6_KABYLAKE_MOBILE 0x8E"? Because we have diff SSP configurations, how to distinguish CML and KBL cpu_id?

Ah, this is interesting. Indeed there are mixed/matched combination of CPU and chipset. If the cpu_id does not give the information, we may have to use the PCI ID which will be different. I am not sure though that this information is passed to the machine driver, so some plumbing may be required.

Let's do this is steps, first add CML to the bxt_da7219_max9837a and then worry about KBL later. Which Chromebook model uses that kbl_da7219_max9837a combination anyways, we'd need to retest that.

...

...

• if SND_SOC_INTEL_GLK || (SND_SOC_SOF_GEMINILAKE &&

SND_SOC_SOF_HDA_LINK)

config SND_SOC_INTEL_GLK_RT5682_MAX98357A_MACH diff --git a/sound/soc/intel/boards/kbl_da7219_max98357a.c b/sound/soc/intel/boards/kbl_da7219_max98357a.c index 537a889..fe3ac70 100644 --- a/sound/soc/intel/boards/kbl_da7219_max98357a.c +++ b/sound/soc/intel/boards/kbl_da7219_max98357a.c @@ -9,6 +9,7 @@ * RT5663 codecs */

+#include <asm/cpu_device_id.h> #include <linux/input.h> #include <linux/module.h> #include <linux/platform_device.h> @@ -17,6 +18,7 @@ #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> +#include <sound/soc-acpi.h> #include "../../codecs/da7219.h" #include "../../codecs/hdac_hdmi.h" #include "../../codecs/da7219-aad.h" @@ -210,7 +212,11 @@ static int kabylake_hdmi_init(struct

snd_soc_pcm_runtime *rtd, int device)

...

if (!pcm)
	return -ENOMEM;

+#if IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE_LP)

• pcm->device = dai->id;

+#else pcm->device = device; +#endif pcm->codec_dai = dai;

list_add_tail(&pcm->head, &ctx->hdmi_pcm_list); @@ -587,9

+593,17

...

@@ static struct snd_soc_card kabylake_audio_card_da7219_m98357a = { .late_probe = kabylake_card_late_probe, };

+static const struct x86_cpu_id cml_ids[] = {

• { X86_VENDOR_INTEL, 6, 0x8E }, /* Cometlake CPU_ID */
• {}

+};

• static int kabylake_audio_probe(struct platform_device *pdev) { struct kbl_codec_private *ctx;

• struct snd_soc_acpi_mach *mach;

• const char *platform_name;

• int ret;

  ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); if (!ctx)

@@ -600,17 +614,46 @@ static int kabylake_audio_probe(struct

platform_device *pdev)

...

kabylake_audio_card =
	(struct snd_soc_card *)pdev->id_entry->driver_data;

• kabylake_audio_card = &kabylake_audio_card_da7219_m98357a;
• kabylake_audio_card->dev = &pdev->dev; snd_soc_card_set_drvdata(kabylake_audio_card, ctx);
• if (x86_match_cpu(cml_ids)) {

• unsigned int i;
  

• kabylake_audio_card->name = "cmlda7219max";
  

• for (i = 0; i < ARRAY_SIZE(kabylake_dais); i++) {
  

• 	/* MAXIM_CODEC is connected to SSP1. */
  

• 	if (!strcmp(kabylake_dais[i].cpus->dai_name,
  

• 			KBL_MAXIM_CODEC_DAI)) {
  

• 		kabylake_dais[i].name = "SSP1-Codec";
  

• 		kabylake_dais[i].cpus->dai_name = "SSP1 Pin";
  

• 	}
  

• 	/* DIALOG_CODEC is connected to SSP0 */
  

• 	else if (!strcmp(kabylake_dais[i].cpus->dai_name,
  

• 			KBL_DIALOG_CODEC_DAI)) {
  

• 		kabylake_dais[i].name = "SSP0-Codec";
  

• 		kabylake_dais[i].cpus->dai_name = "SSP0 Pin";
  

• 	}
  

• }
  

• }
• mach = (&pdev->dev)->platform_data;
• platform_name = mach->mach_params.platform;
• ret = snd_soc_fixup_dai_links_platform_name(kabylake_audio_card,

• 					platform_name);
  

• if (ret)

• return ret;
  

• return devm_snd_soc_register_card(&pdev->dev,

kabylake_audio_card);

...

}

static const struct platform_device_id kbl_board_ids[] = {

• {

• .name = "kbl_da7219_max98357a",
  

• .driver_data =
  

• 	(kernel_ulong_t)&kabylake_audio_card_da7219_m98357a,
  

• },

• {.name = "kbl_da7219_max98357a",},
• {.name = "cml_da7219_max98357a",}, { } };

@@ -628,5 +671,7 @@ module_platform_driver(kabylake_audio) /* Module information */ MODULE_DESCRIPTION("Audio Machine driver-DA7219 & MAX98357A

in I2S mode");

...

MODULE_AUTHOR("Naveen Manohar naveen.m@intel.com"); +MODULE_AUTHOR("Mac Chiang mac.chiang@intel.com"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:kbl_da7219_max98357a"); +MODULE_ALIAS("platform:cml_da7219_max98357a"); diff --git a/sound/soc/intel/common/soc-acpi-intel-cnl-match.c b/sound/soc/intel/common/soc-acpi-intel-cnl-match.c index c36c0aa..4ea32b2 100644 --- a/sound/soc/intel/common/soc-acpi-intel-cnl-match.c +++ b/sound/soc/intel/common/soc-acpi-intel-cnl-match.c @@ -19,6 +19,11 @@ static struct snd_soc_acpi_codecs cml_codecs = { .codecs = {"10EC5682"} };

+static struct snd_soc_acpi_codecs cml_spk_codecs = {

• .num_codecs = 1,
• .codecs = {"MX98357A"}

+};

• struct snd_soc_acpi_mach snd_soc_acpi_intel_cnl_machines[] = { { .id = "INT34C2",

@@ -29,6 +34,13 @@ struct snd_soc_acpi_mach

snd_soc_acpi_intel_cnl_machines[] = {

...

	.sof_tplg_filename = "sof-cnl-rt274.tplg",
},
{

• .id = "DLGS7219",
  

• .drv_name = "cml_da7219_max98357a",
  

• .quirk_data = &cml_spk_codecs,
  

• .sof_fw_filename = "sof-cnl.ri",
  

• .sof_tplg_filename = "sof-cml-da7219-max98357a.tplg",
  

• },
• { .id = "MX98357A", .drv_name = "sof_rt5682", .quirk_data = &cml_codecs,