Unverified Commit 79fc48e4 authored by Dan Murphy's avatar Dan Murphy Committed by Mark Brown
Browse files

ASoC: tlv320adcx140: Configure PDM sampling edge 



Configure the PDM sampling edges based on the values from the firmware.

Signed-off-by: default avatarDan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200514123338.20392-3-dmurphy@ti.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 75b0adbb

sound/soc/codecs/tlv320adcx140.c

+22 −0
Original line number Diff line number Diff line
@@ -760,6 +760,10 @@ static int adcx140_codec_probe(struct snd_soc_component *component) 
	int sleep_cfg_val = ADCX140_WAKE_DEV;

	u8 bias_source;

	u8 vref_source;

	int pdm_count;

	u32 pdm_edges[ADCX140_NUM_PDM_EDGES];

	u32 pdm_edge_val = 0;

	int i;

	int ret;



	ret = device_property_read_u8(adcx140->dev, "ti,mic-bias-source",
@@ -786,6 +790,24 @@ static int adcx140_codec_probe(struct snd_soc_component *component) 


	bias_source |= vref_source;



	pdm_count = device_property_count_u32(adcx140->dev,

					      "ti,pdm-edge-select");

	if (pdm_count <= ADCX140_NUM_PDM_EDGES && pdm_count > 0) {

		ret = device_property_read_u32_array(adcx140->dev,

						     "ti,pdm-edge-select",

						     pdm_edges, pdm_count);

		if (ret)

			return ret;



		for (i = 0; i < pdm_count; i++)

			pdm_edge_val |= pdm_edges[i] << (ADCX140_PDM_EDGE_SHIFT - i);



		ret = regmap_write(adcx140->regmap, ADCX140_PDM_CFG,

				   pdm_edge_val);

		if (ret)

			return ret;

	}



	ret = adcx140_reset(adcx140);

	if (ret)

		goto out;

sound/soc/codecs/tlv320adcx140.h

+3 −0
Original line number Diff line number Diff line
@@ -128,4 +128,7 @@ 


#define ADCX140_TX_OFFSET_MASK		GENMASK(4, 0)



#define ADCX140_NUM_PDM_EDGES		4

#define ADCX140_PDM_EDGE_SHIFT		7



#endif /* _TLV320ADCX140_ */

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