Configure the PDM sampling edges based on the values from the firmware.
Signed-off-by: Dan Murphy dmurphy@ti.com --- sound/soc/codecs/tlv320adcx140.c | 22 ++++++++++++++++++++++ sound/soc/codecs/tlv320adcx140.h | 3 +++ 2 files changed, 25 insertions(+)
diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c index 97634e0ca0ba..140a5802a9a9 100644 --- a/sound/soc/codecs/tlv320adcx140.c +++ b/sound/soc/codecs/tlv320adcx140.c @@ -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; diff --git a/sound/soc/codecs/tlv320adcx140.h b/sound/soc/codecs/tlv320adcx140.h index 6d055e55909e..432eaf25d1a7 100644 --- a/sound/soc/codecs/tlv320adcx140.h +++ b/sound/soc/codecs/tlv320adcx140.h @@ -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_ */