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ASoC: twl6040: Select LPPLL during standby

Message ID 1462965245-7111-1-git-send-email-peter.ujfalusi@ti.com (mailing list archive)
State Accepted
Commit 1135ef1139b3ebd5dc762b6b02384f8a7a84f8d4
Headers show

Commit Message

Peter Ujfalusi May 11, 2016, 11:14 a.m. UTC 
When the codec is in standby we do not need to keep the HPPLL active.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 sound/soc/codecs/twl6040.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)
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Patch

diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
index bc3de2e844e6..7a744b581cc1 100644
--- a/sound/soc/codecs/twl6040.c
+++ b/sound/soc/codecs/twl6040.c
@@ -824,7 +824,7 @@  static int twl6040_set_bias_level(struct snd_soc_codec *codec,
 {
 	struct twl6040 *twl6040 = codec->control_data;
 	struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
-	int ret;
+	int ret = 0;
 
 	switch (level) {
 	case SND_SOC_BIAS_ON:
@@ -832,12 +832,16 @@  static int twl6040_set_bias_level(struct snd_soc_codec *codec,
 	case SND_SOC_BIAS_PREPARE:
 		break;
 	case SND_SOC_BIAS_STANDBY:
-		if (priv->codec_powered)
+		if (priv->codec_powered) {
+			/* Select low power PLL in standby */
+			ret = twl6040_set_pll(twl6040, TWL6040_SYSCLK_SEL_LPPLL,
+					      32768, 19200000);
 			break;
+		}
 
 		ret = twl6040_power(twl6040, 1);
 		if (ret)
-			return ret;
+			break;
 
 		priv->codec_powered = 1;
 
@@ -853,7 +857,7 @@  static int twl6040_set_bias_level(struct snd_soc_codec *codec,
 		break;
 	}
 
-	return 0;
+	return ret;
 }
 
 static int twl6040_startup(struct snd_pcm_substream *substream,