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Subject[PATCH 6/6] ASoC: tlv320adcx140: Add channel slot programming
Date
Each channel can be assigned a specific slot to transmit data. This
assignment is done in the device tree.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
sound/soc/codecs/tlv320adcx140.c | 17 +++++++++++++++++
sound/soc/codecs/tlv320adcx140.h | 3 +++
2 files changed, 20 insertions(+)

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 7fa5c8682c51..666b8f3091d0 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -837,6 +837,8 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
int gpi_count;
u32 gpi_inputs[ADCX140_NUM_GPI_PINS];
u32 gpi_input_val = 0;
+ int slot_count;
+ u32 slot_assignment[ADCX140_NUM_CH];
int i;
int ret;
bool tx_high_z;
@@ -941,6 +943,21 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
}
}

+ slot_count = device_property_count_u32(adcx140->dev, "ti,slot-mapping");
+ if ((slot_count <= ADCX140_NUM_CH) && (slot_count > 0)) {
+ ret = device_property_read_u32_array(adcx140->dev, "ti,slot-mapping",
+ slot_assignment, slot_count);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < slot_count; i++) {
+ ret = regmap_update_bits(adcx140->regmap, ADCX140_ASI_CH1 + i,
+ ADCX140_SLOT_MSK, slot_assignment[i]);
+ if (ret)
+ return ret;
+ }
+ }
+
adcx140_pwr_ctrl(adcx140, true);
out:
return ret;
diff --git a/sound/soc/codecs/tlv320adcx140.h b/sound/soc/codecs/tlv320adcx140.h
index 107bd7927d9c..5eb27b94aa0a 100644
--- a/sound/soc/codecs/tlv320adcx140.h
+++ b/sound/soc/codecs/tlv320adcx140.h
@@ -147,5 +147,8 @@
#define ADCX140_GPO_DRV_MAX 5

#define ADCX140_TX_FILL BIT(0)
+#define ADCX140_NUM_CH 8
+
+#define ADCX140_SLOT_MSK GENMASK(5, 0)

#endif /* _TLV320ADCX140_ */
--
2.28.0
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