+static int cs35l35_boost_inductor(struct cs35l35_private *cs35l35,
+ int inductor)
+{
+ struct regmap *regmap = cs35l35->regmap;
+ unsigned int bst_ipk = 0;
+
+ /*
+ * Digital Boost Converter Configuration for feedback,
+ * ramping, switching frequency, and estimation block seeding.
+ */
+
+ regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ,
+ CS35L35_BST_CONV_SWFREQ_MASK, 0x00);
+
+ regmap_read(regmap, CS35L35_BST_PEAK_I, &bst_ipk);
+ bst_ipk &= CS35L35_BST_IPK_MASK;
+
+ switch (inductor) {
+ case 1000: /* 1 uH */
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x24);
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x24);
+ regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ,
+ CS35L35_BST_CONV_LBST_MASK, 0x00);
+
+ if (bst_ipk < 0x04)
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B);
+ else
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x4E);
+ break;
+ case 1200: /* 1.2 uH */
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x20);
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x20);
+ regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ,
+ CS35L35_BST_CONV_LBST_MASK, 0x01);
+
+ if (bst_ipk < 0x04)
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B);
+ else
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x47);
+ break;
+ case 1500: /* 1.5uH */
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x20);
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x20);
+ regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ,
+ CS35L35_BST_CONV_LBST_MASK, 0x02);
+
+ if (bst_ipk < 0x04)
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B);
+ else
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x3C);
+ break;
+ case 2200: /* 2.2uH */
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_1, 0x19);
+ regmap_write(regmap, CS35L35_BST_CONV_COEF_2, 0x25);
+ regmap_update_bits(regmap, CS35L35_BST_CONV_SW_FREQ,
+ CS35L35_BST_CONV_LBST_MASK, 0x03);
+
+ if (bst_ipk < 0x04)
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x1B);
+ else
+ regmap_write(regmap, CS35L35_BST_CONV_SLOPE_COMP, 0x23);
+ break;
+ default:
+ dev_err(cs35l35->dev, "Invalid Inductor Value %d uH\n",
+ inductor);
+ return -EINVAL;
+ }
+ return 0;
+}
+