diff mbox series

[2/2] ASoC: tlv320adcx140: Wake up codec before accessing register

Message ID 20200908083521.14105-2-camel.guo@axis.com
State New
Headers show
Series [1/2] ASoC: tlv320adcx140: Avoid accessing invalid gpio_reset | expand

Commit Message

Camel Guo Sept. 8, 2020, 8:35 a.m. UTC 
From: Camel Guo <camelg@axis.com>

According to its datasheet, after reset this codec goes into sleep
mode. In this mode, any register accessing should be avoided except for
exiting sleep mode. Hence this commit moves SLEEP_CFG access before any
register accessing.

Signed-off-by: Camel Guo <camelg@axis.com>
---
 sound/soc/codecs/tlv320adcx140.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 597dd1062943..6d456aa269ad 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -842,6 +842,18 @@  static int adcx140_codec_probe(struct snd_soc_component *component)
 	if (ret)
 		goto out;
 
+	if (adcx140->supply_areg == NULL)
+		sleep_cfg_val |= ADCX140_AREG_INTERNAL;
+
+	ret = regmap_write(adcx140->regmap, ADCX140_SLEEP_CFG, sleep_cfg_val);
+	if (ret) {
+		dev_err(adcx140->dev, "setting sleep config failed %d\n", ret);
+		goto out;
+	}
+
+	/* 8.4.3: Wait >= 1ms after entering active mode. */
+	usleep_range(1000, 100000);
+
 	pdm_count = device_property_count_u32(adcx140->dev,
 					      "ti,pdm-edge-select");
 	if (pdm_count <= ADCX140_NUM_PDM_EDGES && pdm_count > 0) {
@@ -889,18 +901,6 @@  static int adcx140_codec_probe(struct snd_soc_component *component)
 	if (ret)
 		goto out;
 
-	if (adcx140->supply_areg == NULL)
-		sleep_cfg_val |= ADCX140_AREG_INTERNAL;
-
-	ret = regmap_write(adcx140->regmap, ADCX140_SLEEP_CFG, sleep_cfg_val);
-	if (ret) {
-		dev_err(adcx140->dev, "setting sleep config failed %d\n", ret);
-		goto out;
-	}
-
-	/* 8.4.3: Wait >= 1ms after entering active mode. */
-	usleep_range(1000, 100000);
-
 	ret = regmap_update_bits(adcx140->regmap, ADCX140_BIAS_CFG,
 				ADCX140_MIC_BIAS_VAL_MSK |
 				ADCX140_MIC_BIAS_VREF_MSK, bias_cfg);