[PATCH v4 08/16] hda: cs35l41: Mute the device before shutdown

[Lucas Tanure]

Mute the device before shutdown to avoid pops and clicks for all types
of boost.

Signed-off-by: Lucas Tanure <tanureal at opensource.cirrus.com>
---
 sound/pci/hda/cs35l41_hda.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c
index 46e920ec3000..0709d09f4e13 100644
--- a/sound/pci/hda/cs35l41_hda.c
+++ b/sound/pci/hda/cs35l41_hda.c
@@ -28,6 +28,11 @@ static const struct reg_sequence cs35l41_hda_config[] = {
 	{ CS35L41_PWR_CTRL2,		0x00000001 }, // AMP_EN = 1
 };
 
+static const struct reg_sequence cs35l41_hda_mute[] = {
+	{ CS35L41_AMP_GAIN_CTRL,	0x00000000 }, // AMP_GAIN_PCM 0.5 dB
+	{ CS35L41_AMP_DIG_VOL_CTRL,	0x0000A678 }, // AMP_VOL_PCM Mute
+};
+
 static const struct reg_sequence cs35l41_hda_start_bst[] = {
 	{ CS35L41_PWR_CTRL2,		0x00000021 }, // BST_EN = 10, AMP_EN = 1
 	{ CS35L41_PWR_CTRL1,		0x00000001, 3000}, // set GLOBAL_EN = 1
@@ -89,7 +94,6 @@ static const struct reg_sequence cs35l41_active_to_safe[] = {
 	{ 0x00000040,			0x00000055 },
 	{ 0x00000040,			0x000000AA },
 	{ 0x00007438,			0x00585941 },
-	{ CS35L41_AMP_DIG_VOL_CTRL,	0x0000A678 }, // AMP_VOL_PCM Mute
 	{ CS35L41_PWR_CTRL2,		0x00000000 }, // AMP_EN = 0
 	{ CS35L41_PWR_CTRL1,		0x00000000 },
 	{ 0x0000742C,			0x00000009, 2000 },
@@ -146,6 +150,7 @@ static void cs35l41_hda_playback_hook(struct device *dev, int action)
 			ret = regmap_multi_reg_write(reg, reg_seq->prepare, reg_seq->num_prepare);
 		break;
 	case HDA_GEN_PCM_ACT_CLEANUP:
+		regmap_multi_reg_write(reg, cs35l41_hda_mute, ARRAY_SIZE(cs35l41_hda_mute));
 		if (reg_seq->cleanup)
 			ret = regmap_multi_reg_write(reg, reg_seq->cleanup, reg_seq->num_cleanup);
 		break;
-- 
2.35.1