ASoC: cs35l41: Create shared function for boost configuration

ASoC and HDA will use the same registers to configure
internal boost for the device

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211217115708.882525-7-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 98 insertions, 0 deletions

diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c
index afcec715374d..d026c5e3a378 100644
--- a/sound/soc/codecs/cs35l41-lib.c
+++ b/sound/soc/codecs/cs35l41-lib.c
@@ -966,6 +966,104 @@ int cs35l41_set_channels(struct device *dev, struct regmap *reg,
 }
 EXPORT_SYMBOL_GPL(cs35l41_set_channels);
 
+static const unsigned char cs35l41_bst_k1_table[4][5] = {
+	{ 0x24, 0x32, 0x32, 0x4F, 0x57 },
+	{ 0x24, 0x32, 0x32, 0x4F, 0x57 },
+	{ 0x40, 0x32, 0x32, 0x4F, 0x57 },
+	{ 0x40, 0x32, 0x32, 0x4F, 0x57 }
+};
+
+static const unsigned char cs35l41_bst_k2_table[4][5] = {
+	{ 0x24, 0x49, 0x66, 0xA3, 0xEA },
+	{ 0x24, 0x49, 0x66, 0xA3, 0xEA },
+	{ 0x48, 0x49, 0x66, 0xA3, 0xEA },
+	{ 0x48, 0x49, 0x66, 0xA3, 0xEA }
+};
+
+static const unsigned char cs35l41_bst_slope_table[4] = {
+	0x75, 0x6B, 0x3B, 0x28
+};
+
+
+int cs35l41_boost_config(struct device *dev, struct regmap *regmap, int boost_ind, int boost_cap,
+			 int boost_ipk)
+{
+	unsigned char bst_lbst_val, bst_cbst_range, bst_ipk_scaled;
+	int ret;
+
+	switch (boost_ind) {
+	case 1000:	/* 1.0 uH */
+		bst_lbst_val = 0;
+		break;
+	case 1200:	/* 1.2 uH */
+		bst_lbst_val = 1;
+		break;
+	case 1500:	/* 1.5 uH */
+		bst_lbst_val = 2;
+		break;
+	case 2200:	/* 2.2 uH */
+		bst_lbst_val = 3;
+		break;
+	default:
+		dev_err(dev, "Invalid boost inductor value: %d nH\n", boost_ind);
+		return -EINVAL;
+	}
+
+	switch (boost_cap) {
+	case 0 ... 19:
+		bst_cbst_range = 0;
+		break;
+	case 20 ... 50:
+		bst_cbst_range = 1;
+		break;
+	case 51 ... 100:
+		bst_cbst_range = 2;
+		break;
+	case 101 ... 200:
+		bst_cbst_range = 3;
+		break;
+	default:	/* 201 uF and greater */
+		bst_cbst_range = 4;
+	}
+
+	ret = regmap_update_bits(regmap, CS35L41_BSTCVRT_COEFF,
+				 CS35L41_BST_K1_MASK | CS35L41_BST_K2_MASK,
+				 cs35l41_bst_k1_table[bst_lbst_val][bst_cbst_range]
+					<< CS35L41_BST_K1_SHIFT |
+				 cs35l41_bst_k2_table[bst_lbst_val][bst_cbst_range]
+					<< CS35L41_BST_K2_SHIFT);
+	if (ret) {
+		dev_err(dev, "Failed to write boost coefficients: %d\n", ret);
+		return ret;
+	}
+
+	ret = regmap_update_bits(regmap, CS35L41_BSTCVRT_SLOPE_LBST,
+				 CS35L41_BST_SLOPE_MASK | CS35L41_BST_LBST_VAL_MASK,
+				 cs35l41_bst_slope_table[bst_lbst_val]
+					<< CS35L41_BST_SLOPE_SHIFT |
+				 bst_lbst_val << CS35L41_BST_LBST_VAL_SHIFT);
+	if (ret) {
+		dev_err(dev, "Failed to write boost slope/inductor value: %d\n", ret);
+		return ret;
+	}
+
+	if (boost_ipk < 1600 || boost_ipk > 4500) {
+		dev_err(dev, "Invalid boost inductor peak current: %d mA\n", boost_ipk);
+		return -EINVAL;
+	}
+	bst_ipk_scaled = ((boost_ipk - 1600) / 50) + 0x10;
+
+	ret = regmap_update_bits(regmap, CS35L41_BSTCVRT_PEAK_CUR, CS35L41_BST_IPK_MASK,
+				 bst_ipk_scaled << CS35L41_BST_IPK_SHIFT);
+	if (ret) {
+		dev_err(dev, "Failed to write boost inductor peak current: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(cs35l41_boost_config);
+
 MODULE_DESCRIPTION("CS35L41 library");
 MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
 MODULE_AUTHOR("Lucas Tanure, Cirrus Logic Inc, <tanureal@opensource.cirrus.com>");