1 files changed, 16 insertions, 8 deletions

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 7823f92413f3..76a066e908ed 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -94,6 +94,7 @@ struct wm8994_priv {
 
 	struct wm8994_micdet micdet[2];
 
+	int revision;
 	struct wm8994_pdata *pdata;
 };
 
@@ -3073,6 +3074,8 @@ static int wm8994_set_dai_sysclk(struct snd_soc_dai *dai,
 static int wm8994_set_bias_level(struct snd_soc_codec *codec,
 				 enum snd_soc_bias_level level)
 {
+	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+
 	switch (level) {
 	case SND_SOC_BIAS_ON:
 		break;
@@ -3085,11 +3088,16 @@ static int wm8994_set_bias_level(struct snd_soc_codec *codec,
 
 	case SND_SOC_BIAS_STANDBY:
 		if (codec->bias_level == SND_SOC_BIAS_OFF) {
-			/* Tweak DC servo configuration for improved
-			 * performance. */
-			snd_soc_write(codec, 0x102, 0x3);
-			snd_soc_write(codec, 0x56, 0x3);
-			snd_soc_write(codec, 0x102, 0);
+			/* Tweak DC servo and DSP configuration for
+			 * improved performance. */
+			if (wm8994->revision < 4) {
+				/* Tweak DC servo and DSP configuration for
+				 * improved performance. */
+				snd_soc_write(codec, 0x102, 0x3);
+				snd_soc_write(codec, 0x56, 0x3);
+				snd_soc_write(codec, 0x817, 0);
+				snd_soc_write(codec, 0x102, 0);
+			}
 
 			/* Discharge LINEOUT1 & 2 */
 			snd_soc_update_bits(codec, WM8994_ANTIPOP_1,
@@ -3859,7 +3867,7 @@ static irqreturn_t wm8994_mic_irq(int irq, void *data)
 static int wm8994_codec_probe(struct snd_soc_codec *codec)
 {
 	struct wm8994_priv *wm8994;
-	int ret, i, rev;
+	int ret, i;
 
 	codec->control_data = dev_get_drvdata(codec->dev->parent);
 
@@ -3889,8 +3897,8 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 			wm8994->reg_cache[i] = 0;
 
 	/* Set revision-specific configuration */
-	rev = snd_soc_read(codec, WM8994_CHIP_REVISION);
-	switch (rev) {
+	wm8994->revision = snd_soc_read(codec, WM8994_CHIP_REVISION);
+	switch (wm8994->revision) {
 	case 2:
 	case 3:
 		wm8994->hubs.dcs_codes = -5;