[PATCH v2 2/2] ALSA: hda/cirrus: Use CS8409 filter to fix abnormal sounds on Bullseye

[Vitaly Rodionov]

From: Stefan Binding <sbinding at opensource.cirrus.com>

Cracking noises have been reported on the built-in speaker for certain
Bullseye platforms, when volume is > 80%.

This issue is caused by the specific combination of Codec and AMP in
this platform, and cannot be fixed by the AMP, so indead must be fixed
at codec level, by adding attenuation to the volume.

Tested on DELL Inspiron-3505, DELL Inspiron-3501, DELL Inspiron-3500

Signed-off-by: Stefan Binding <sbinding at opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr at opensource.cirrus.com>
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1924997
Reported-and-tested-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 sound/pci/hda/patch_cirrus.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index a4f82f147ff3..726507d0b04c 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -1481,6 +1481,34 @@ static const struct cs8409_cir_param cs8409_cs42l42_hw_cfg[] = {
 	{} /* Terminator */
 };
 
+static const struct cs8409_cir_param cs8409_cs42l42_bullseye_atn[] = {
+	{ 0x47, 0x65, 0x4000 }, /* EQ_SEL=1, EQ1/2_EN=0 */
+	{ 0x47, 0x64, 0x4000 }, /* +EQ_ACC */
+	{ 0x47, 0x65, 0x4010 }, /* +EQ2_EN */
+	{ 0x47, 0x63, 0x0647 }, /* EQ_DATA_HI=0x0647 */
+	{ 0x47, 0x64, 0xc0c7 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=0, EQ_DATA_LO=0x67 */
+	{ 0x47, 0x63, 0x0647 }, /* EQ_DATA_HI=0x0647 */
+	{ 0x47, 0x64, 0xc1c7 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=1, EQ_DATA_LO=0x67 */
+	{ 0x47, 0x63, 0xf370 }, /* EQ_DATA_HI=0xf370 */
+	{ 0x47, 0x64, 0xc271 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=2, EQ_DATA_LO=0x71 */
+	{ 0x47, 0x63, 0x1ef8 }, /* EQ_DATA_HI=0x1ef8 */
+	{ 0x47, 0x64, 0xc348 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=3, EQ_DATA_LO=0x48 */
+	{ 0x47, 0x63, 0xc110 }, /* EQ_DATA_HI=0xc110 */
+	{ 0x47, 0x64, 0xc45a }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=4, EQ_DATA_LO=0x5a */
+	{ 0x47, 0x63, 0x1f29 }, /* EQ_DATA_HI=0x1f29 */
+	{ 0x47, 0x64, 0xc574 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=5, EQ_DATA_LO=0x74 */
+	{ 0x47, 0x63, 0x1d7a }, /* EQ_DATA_HI=0x1d7a */
+	{ 0x47, 0x64, 0xc653 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=6, EQ_DATA_LO=0x53 */
+	{ 0x47, 0x63, 0xc38c }, /* EQ_DATA_HI=0xc38c */
+	{ 0x47, 0x64, 0xc714 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=7, EQ_DATA_LO=0x14 */
+	{ 0x47, 0x63, 0x1ca3 }, /* EQ_DATA_HI=0x1ca3 */
+	{ 0x47, 0x64, 0xc8c7 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=8, EQ_DATA_LO=0xc7 */
+	{ 0x47, 0x63, 0xc38c }, /* EQ_DATA_HI=0xc38c */
+	{ 0x47, 0x64, 0xc914 }, /* +EQ_WRT, +EQ_ACC, EQ_ADR=9, EQ_DATA_LO=0x14 */
+	{ 0x47, 0x64, 0x0000 }, /* -EQ_ACC, -EQ_WRT */
+	{} /* Terminator */
+};
+
 /**
  * cs8409_enable_i2c_clock - Enable I2C clocks
  * @codec: the codec instance
@@ -2029,6 +2057,7 @@ static void cs8409_enable_ur(struct hda_codec *codec, int flag)
 static void cs8409_cs42l42_hw_init(struct hda_codec *codec)
 {
 	const struct cs8409_cir_param *seq = cs8409_cs42l42_hw_cfg;
+	const struct cs8409_cir_param *seq_bullseye = cs8409_cs42l42_bullseye_atn;
 	struct cs_spec *spec = codec->spec;
 
 	if (spec->gpio_mask) {
@@ -2043,6 +2072,10 @@ static void cs8409_cs42l42_hw_init(struct hda_codec *codec)
 	for (; seq->nid; seq++)
 		cs_vendor_coef_set(codec, seq->cir, seq->coeff);
 
+	if (codec->fixup_id == CS8409_BULLSEYE)
+		for (; seq_bullseye->nid; seq_bullseye++)
+			cs_vendor_coef_set(codec, seq_bullseye->cir, seq_bullseye->coeff);
+
 	/* Disable Unsolicited Response during boot */
 	cs8409_enable_ur(codec, 0);
 
-- 
2.25.1