ASoC: tas2764: Apply Apple quirks

Apple's SN012776 driver has some peculiar aspects to its behavior that
are suspected to work around issues in the codec part. Add a module
parameter for enabling individual quirks that should be imitated after
the Apple driver.

Setting some of these by default seems to be required. For example,
setting 0xf fixes an issue with transient overcurrent errors which
can crash the chip until the next system reboot. To be safe, let's
enable all of them by default.

Reviewed-by: Neal Gompa <neal@gompa.dev>
Co-developed-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Co-developed-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Link: https://patch.msgid.link/20250406-apple-codec-changes-v5-6-50a00ec850a3@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/sound/soc/codecs/tas2764.c b/sound/soc/codecs/tas2764.c
index 718107fce3bc..21c38b2394b7 100644
--- a/sound/soc/codecs/tas2764.c
+++ b/sound/soc/codecs/tas2764.c
@@ -45,6 +45,8 @@ struct tas2764_priv {
 	bool unmuted;
 };
 
+#include "tas2764-quirks.h"
+
 static const char *tas2764_int_ltch0_msgs[8] = {
 	"fault: over temperature", /* INT_LTCH0 & BIT(0) */
 	"fault: over current",
@@ -122,6 +124,9 @@ static int tas2764_update_pwr_ctrl(struct tas2764_priv *tas2764)
 	else
 		val = TAS2764_PWR_CTRL_SHUTDOWN;
 
+	if (ENABLED_APPLE_QUIRKS & TAS2764_SHUTDOWN_DANCE)
+		return tas2764_do_quirky_pwr_ctrl_change(tas2764, val);
+
 	ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
 					    TAS2764_PWR_CTRL_MASK, val);
 	if (ret < 0)
@@ -548,6 +553,30 @@ static uint8_t sn012776_bop_presets[] = {
 
 static const struct regmap_config tas2764_i2c_regmap;
 
+static int tas2764_apply_init_quirks(struct tas2764_priv *tas2764)
+{
+	int ret, i;
+
+	for (i = 0; i < ARRAY_SIZE(tas2764_quirk_init_sequences); i++) {
+		const struct tas2764_quirk_init_sequence *init_seq =
+						&tas2764_quirk_init_sequences[i];
+
+		if (!init_seq->seq)
+			continue;
+
+		if (!(BIT(i) & ENABLED_APPLE_QUIRKS))
+			continue;
+
+		ret = regmap_multi_reg_write(tas2764->regmap, init_seq->seq,
+					     init_seq->len);
+
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
 static int tas2764_codec_probe(struct snd_soc_component *component)
 {
 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
@@ -617,6 +646,13 @@ static int tas2764_codec_probe(struct snd_soc_component *component)
 			if (ret < 0)
 				return ret;
 		}
+
+		/* Apply all enabled Apple quirks */
+		ret = tas2764_apply_init_quirks(tas2764);
+
+		if (ret < 0)
+			return ret;
+
 		break;
 	default:
 		break;
@@ -701,6 +737,9 @@ static bool tas2764_volatile_register(struct device *dev, unsigned int reg)
 	case TAS2764_INT_LTCH0 ... TAS2764_INT_LTCH4:
 	case TAS2764_INT_CLK_CFG:
 		return true;
+	case TAS2764_REG(0xf0, 0x0) ... TAS2764_REG(0xff, 0x0):
+		/* TI's undocumented registers for the application of quirks */
+		return true;
 	default:
 		return false;
 	}