Unverified Commit d1c80876 authored by Brent Lu's avatar Brent Lu Committed by Mark Brown
Browse files

ASoC: Intel: sof_ssp_amp: fix no DMIC BE Link on Chromebooks 



The SOF topology supports 2 BE Links(dmic01 and dmic16k) and each
link supports up to four DMICs. However, Chromebook does not implement
ACPI NHLT table so the mach->mach_params.dmic_num is always zero. We
add a quirk so machine driver knows it's running on a Chromebook and
need to create BE Links for DMIC.

Reviewed-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: default avatarBrent Lu <brent.lu@intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220509170922.54868-3-pierre-louis.bossart@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0b56ed19

sound/soc/intel/boards/sof_ssp_amp.c

+14 −2
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 


#include <linux/acpi.h>

#include <linux/delay.h>

#include <linux/dmi.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <sound/core.h>
@@ -78,6 +79,16 @@ struct sof_card_private { 
	bool idisp_codec;

};



static const struct dmi_system_id chromebook_platforms[] = {

	{

		.ident = "Google Chromebooks",

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Google"),

		}

	},

	{},

};



static const struct snd_soc_dapm_widget sof_ssp_amp_dapm_widgets[] = {

	SND_SOC_DAPM_MIC("SoC DMIC", NULL),

};
@@ -371,7 +382,7 @@ static int sof_ssp_amp_probe(struct platform_device *pdev) 
	struct snd_soc_dai_link *dai_links;

	struct snd_soc_acpi_mach *mach;

	struct sof_card_private *ctx;

	int dmic_be_num, hdmi_num = 0;

	int dmic_be_num = 0, hdmi_num = 0;

	int ret, ssp_codec;



	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
@@ -383,7 +394,8 @@ static int sof_ssp_amp_probe(struct platform_device *pdev) 


	mach = pdev->dev.platform_data;



	dmic_be_num = mach->mach_params.dmic_num;

	if (dmi_check_system(chromebook_platforms) || mach->mach_params.dmic_num > 0)

		dmic_be_num = 2;



	ssp_codec = sof_ssp_amp_quirk & SOF_AMPLIFIER_SSP_MASK;