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ASoC: tlv320adcx140: Configure PDM sampling edge

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

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200514123338.20392-3-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dan Murphy 2020-05-14 07:33:38 -05:00 committed by Mark Brown
parent 75b0adbb08
commit 79fc48e41e
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
2 changed files with 25 additions and 0 deletions
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22
sound/soc/codecs/tlv320adcx140.c
View file

@ -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;

3
sound/soc/codecs/tlv320adcx140.h
View file

@ -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_ */