From: Brent Lu brent.lu@intel.com

[ Upstream commit d1c808765deb2bcd35d827402ed4d75d068aae18 ]

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: Bard Liao yung-chuan.liao@linux.intel.com Signed-off-by: Brent Lu brent.lu@intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Link: https://lore.kernel.org/r/20220509170922.54868-3-pierre-louis.bossart@linux.... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/intel/boards/sof_ssp_amp.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/sound/soc/intel/boards/sof_ssp_amp.c b/sound/soc/intel/boards/sof_ssp_amp.c index 88530e9de543..ef70c6f27fe1 100644 --- a/sound/soc/intel/boards/sof_ssp_amp.c +++ b/sound/soc/intel/boards/sof_ssp_amp.c @@ -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;