[alsa-devel] [PATCH v2 08/32] ASoC: rt5651: Fix bias_level confusion

[Hans de Goede]

The rt5651_set_bias_level() function was turning everything off at
SND_SOC_BIAS_STANDBY, rather then at SND_SOC_BIAS_OFF, requiring the bias-
level to be raised to SND_SOC_BIAS_PREPARE before turning anything on.

This is not how the bias-levels are supposed to work, this commit fixes
this by turning everything off at the SND_SOC_BIAS_OFF level and enabling
the pwr-bits needed for minimum functionality at SND_SOC_BIAS_STANDBY.

This fixes the minimum set of pwr-bits not getting enabled when
force-enabling some dapm-supplies (e.g. for jack type detection),
which raises the bias-level to standby.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 sound/soc/codecs/rt5651.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c
index d4a2a1ef87b2..90e800416a8e 100644
--- a/sound/soc/codecs/rt5651.c
+++ b/sound/soc/codecs/rt5651.c
@@ -1521,6 +1521,13 @@ static int rt5651_set_bias_level(struct snd_soc_component *component,
 	switch (level) {
 	case SND_SOC_BIAS_PREPARE:
 		if (SND_SOC_BIAS_STANDBY == snd_soc_component_get_bias_level(component)) {
+			if (snd_soc_component_read32(component, RT5651_PLL_MODE_1) & 0x9200)
+				snd_soc_component_update_bits(component, RT5651_D_MISC,
+						    0xc00, 0xc00);
+		}
+		break;
+	case SND_SOC_BIAS_STANDBY:
+		if (SND_SOC_BIAS_OFF == snd_soc_component_get_bias_level(component)) {
 			snd_soc_component_update_bits(component, RT5651_PWR_ANLG1,
 				RT5651_PWR_VREF1 | RT5651_PWR_MB |
 				RT5651_PWR_BG | RT5651_PWR_VREF2,
@@ -1534,13 +1541,10 @@ static int rt5651_set_bias_level(struct snd_soc_component *component,
 				RT5651_PWR_LDO_DVO_MASK,
 				RT5651_PWR_LDO_DVO_1_2V);
 			snd_soc_component_update_bits(component, RT5651_D_MISC, 0x1, 0x1);
-			if (snd_soc_component_read32(component, RT5651_PLL_MODE_1) & 0x9200)
-				snd_soc_component_update_bits(component, RT5651_D_MISC,
-						    0xc00, 0xc00);
 		}
 		break;
 
-	case SND_SOC_BIAS_STANDBY:
+	case SND_SOC_BIAS_OFF:
 		snd_soc_component_write(component, RT5651_D_MISC, 0x0010);
 		snd_soc_component_write(component, RT5651_PWR_DIG1, 0x0000);
 		snd_soc_component_write(component, RT5651_PWR_DIG2, 0x0000);
-- 
2.14.3