[PATCH 5/6] ASoC: wm8978: Fix the 128x oversampling switch bits

[HyeongJun An]

The DAC and ADC 128x Oversampling Switches use bit 5 of R10 and R14.
Table 66 of the WM8978 datasheet puts DACOSR128 and ADCOSR128 at bit 3
of those registers.

In R14, bit 5 is inside HPFCUT[6:4], which the High Pass Cut Off
control owns. So turning on ADC oversampling changes the high pass
cut-off, and the oversampling bit cannot be set. In R10, bit 5 is
reserved, so the DAC switch has no effect.

Use bit 3 for both.

Fixes: 823dba519122 ("ASoC: Fix broken bitfield definitions in WM8978")
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: HyeongJun An <sammiee5311@xxxxxxxxx>
---
 sound/soc/codecs/wm8978.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c
index 25cc433c7653..258bc9f88f52 100644
--- a/sound/soc/codecs/wm8978.c
+++ b/sound/soc/codecs/wm8978.c
@@ -255,9 +255,9 @@ static const struct snd_kcontrol_new wm8978_snd_controls[] = {
 
 	/* DAC / ADC oversampling */
 	SOC_SINGLE("DAC 128x Oversampling Switch", WM8978_DAC_CONTROL,
-		   5, 1, 0),
+		   3, 1, 0),
 	SOC_SINGLE("ADC 128x Oversampling Switch", WM8978_ADC_CONTROL,
-		   5, 1, 0),
+		   3, 1, 0),
 };
 
 /* Mixer #1: Output (OUT1, OUT2) Mixer: mix AUX, Input mixer output and DAC */
-- 
2.43.0