[PATCH 19/20] ASoC: Intel: sof_es8336: add cfg-dmics component for UCM support

[Pierre-Louis Bossart]

The presence of DMICs needs to be signaled to UCM, follow the HDaudio
example and use the 'cfg-dmics' component string to report the number
of dmics present on the platform.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 sound/soc/intel/boards/sof_es8336.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/intel/boards/sof_es8336.c b/sound/soc/intel/boards/sof_es8336.c
index 32f5303041b8..5e0529aa4f1d 100644
--- a/sound/soc/intel/boards/sof_es8336.c
+++ b/sound/soc/intel/boards/sof_es8336.c
@@ -459,6 +459,8 @@ static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
 	return NULL;
 }
 
+static char soc_components[30];
+
  /* i2c-<HID>:00 with HID being 8 chars */
 static char codec_name[SND_ACPI_I2C_ID_LEN];
 
@@ -594,6 +596,12 @@ static int sof_es8336_probe(struct platform_device *pdev)
 
 	snd_soc_card_set_drvdata(card, priv);
 
+	if (mach->mach_params.dmic_num > 0) {
+		snprintf(soc_components, sizeof(soc_components),
+			 "cfg-dmics:%d", mach->mach_params.dmic_num);
+		card->components = soc_components;
+	}
+
 	ret = devm_snd_soc_register_card(dev, card);
 	if (ret) {
 		gpiod_put(priv->gpio_pa);
-- 
2.30.2