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0001 // SPDX-License-Identifier: GPL-2.0+
0002 //
0003 // Regulator driver for ATC260x PMICs
0004 //
0005 // Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
0006 // Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
0007 
0008 #include <linux/mfd/atc260x/core.h>
0009 #include <linux/module.h>
0010 #include <linux/of_device.h>
0011 #include <linux/regmap.h>
0012 #include <linux/regulator/driver.h>
0013 
0014 struct atc260x_regulator_data {
0015     int voltage_time_dcdc;
0016     int voltage_time_ldo;
0017 };
0018 
0019 static const struct linear_range atc2603c_dcdc_voltage_ranges[] = {
0020     REGULATOR_LINEAR_RANGE(1300000, 0, 13, 50000),
0021     REGULATOR_LINEAR_RANGE(1950000, 14, 15, 100000),
0022 };
0023 
0024 static const struct linear_range atc2609a_dcdc_voltage_ranges[] = {
0025     REGULATOR_LINEAR_RANGE(600000, 0, 127, 6250),
0026     REGULATOR_LINEAR_RANGE(1400000, 128, 232, 25000),
0027 };
0028 
0029 static const struct linear_range atc2609a_ldo_voltage_ranges0[] = {
0030     REGULATOR_LINEAR_RANGE(700000, 0, 15, 100000),
0031     REGULATOR_LINEAR_RANGE(2100000, 0, 12, 100000),
0032 };
0033 
0034 static const struct linear_range atc2609a_ldo_voltage_ranges1[] = {
0035     REGULATOR_LINEAR_RANGE(850000, 0, 15, 100000),
0036     REGULATOR_LINEAR_RANGE(2100000, 0, 11, 100000),
0037 };
0038 
0039 static const unsigned int atc260x_ldo_voltage_range_sel[] = {
0040     0x0, 0x20,
0041 };
0042 
0043 static int atc260x_dcdc_set_voltage_time_sel(struct regulator_dev *rdev,
0044                          unsigned int old_selector,
0045                          unsigned int new_selector)
0046 {
0047     struct atc260x_regulator_data *data = rdev_get_drvdata(rdev);
0048 
0049     if (new_selector > old_selector)
0050         return data->voltage_time_dcdc;
0051 
0052     return 0;
0053 }
0054 
0055 static int atc260x_ldo_set_voltage_time_sel(struct regulator_dev *rdev,
0056                         unsigned int old_selector,
0057                         unsigned int new_selector)
0058 {
0059     struct atc260x_regulator_data *data = rdev_get_drvdata(rdev);
0060 
0061     if (new_selector > old_selector)
0062         return data->voltage_time_ldo;
0063 
0064     return 0;
0065 }
0066 
0067 static const struct regulator_ops atc260x_dcdc_ops = {
0068     .enable = regulator_enable_regmap,
0069     .disable = regulator_disable_regmap,
0070     .is_enabled = regulator_is_enabled_regmap,
0071     .list_voltage = regulator_list_voltage_linear,
0072     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0073     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0074     .set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel,
0075 };
0076 
0077 static const struct regulator_ops atc260x_ldo_ops = {
0078     .enable = regulator_enable_regmap,
0079     .disable = regulator_disable_regmap,
0080     .is_enabled = regulator_is_enabled_regmap,
0081     .list_voltage = regulator_list_voltage_linear,
0082     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0083     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0084     .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
0085 };
0086 
0087 static const struct regulator_ops atc260x_ldo_bypass_ops = {
0088     .enable = regulator_enable_regmap,
0089     .disable = regulator_disable_regmap,
0090     .is_enabled = regulator_is_enabled_regmap,
0091     .list_voltage = regulator_list_voltage_linear,
0092     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0093     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0094     .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
0095     .set_bypass = regulator_set_bypass_regmap,
0096     .get_bypass = regulator_get_bypass_regmap,
0097 };
0098 
0099 static const struct regulator_ops atc260x_ldo_bypass_discharge_ops = {
0100     .enable = regulator_enable_regmap,
0101     .disable = regulator_disable_regmap,
0102     .is_enabled = regulator_is_enabled_regmap,
0103     .list_voltage = regulator_list_voltage_linear,
0104     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0105     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0106     .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
0107     .set_bypass = regulator_set_bypass_regmap,
0108     .get_bypass = regulator_get_bypass_regmap,
0109     .set_active_discharge = regulator_set_active_discharge_regmap,
0110 };
0111 
0112 static const struct regulator_ops atc260x_dcdc_range_ops = {
0113     .enable = regulator_enable_regmap,
0114     .disable = regulator_disable_regmap,
0115     .is_enabled = regulator_is_enabled_regmap,
0116     .list_voltage = regulator_list_voltage_linear_range,
0117     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0118     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0119     .set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel,
0120 };
0121 
0122 static const struct regulator_ops atc260x_ldo_range_pick_ops = {
0123     .enable = regulator_enable_regmap,
0124     .disable = regulator_disable_regmap,
0125     .is_enabled = regulator_is_enabled_regmap,
0126     .list_voltage = regulator_list_voltage_pickable_linear_range,
0127     .set_voltage_sel = regulator_set_voltage_sel_pickable_regmap,
0128     .get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
0129     .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
0130 };
0131 
0132 static const struct regulator_ops atc260x_dcdc_fixed_ops = {
0133     .list_voltage = regulator_list_voltage_linear,
0134     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0135     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0136     .set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel,
0137 };
0138 
0139 static const struct regulator_ops atc260x_ldo_fixed_ops = {
0140     .list_voltage = regulator_list_voltage_linear,
0141     .set_voltage_sel = regulator_set_voltage_sel_regmap,
0142     .get_voltage_sel = regulator_get_voltage_sel_regmap,
0143     .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel,
0144 };
0145 
0146 static const struct regulator_ops atc260x_no_ops = {
0147 };
0148 
0149 /*
0150  * Note LDO8 is not documented in datasheet (v2.4), but supported
0151  * in the vendor's driver implementation (xapp-le-kernel).
0152  */
0153 enum atc2603c_reg_ids {
0154     ATC2603C_ID_DCDC1,
0155     ATC2603C_ID_DCDC2,
0156     ATC2603C_ID_DCDC3,
0157     ATC2603C_ID_LDO1,
0158     ATC2603C_ID_LDO2,
0159     ATC2603C_ID_LDO3,
0160     ATC2603C_ID_LDO5,
0161     ATC2603C_ID_LDO6,
0162     ATC2603C_ID_LDO7,
0163     ATC2603C_ID_LDO8,
0164     ATC2603C_ID_LDO11,
0165     ATC2603C_ID_LDO12,
0166     ATC2603C_ID_SWITCHLDO1,
0167     ATC2603C_ID_MAX,
0168 };
0169 
0170 #define atc2603c_reg_desc_dcdc(num, min, step, n_volt, vsel_h, vsel_l) { \
0171     .name = "DCDC"#num, \
0172     .supply_name = "dcdc"#num, \
0173     .of_match = of_match_ptr("dcdc"#num), \
0174     .regulators_node = of_match_ptr("regulators"), \
0175     .id = ATC2603C_ID_DCDC##num, \
0176     .ops = &atc260x_dcdc_ops, \
0177     .type = REGULATOR_VOLTAGE, \
0178     .min_uV = min, \
0179     .uV_step = step, \
0180     .n_voltages = n_volt, \
0181     .vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \
0182     .vsel_mask = GENMASK(vsel_h, vsel_l), \
0183     .enable_reg = ATC2603C_PMU_DC##num##_CTL0, \
0184     .enable_mask = BIT(15), \
0185     .enable_time = 800, \
0186     .owner = THIS_MODULE, \
0187 }
0188 
0189 #define atc2603c_reg_desc_dcdc_range(num, vsel_h, vsel_l) { \
0190     .name = "DCDC"#num, \
0191     .supply_name = "dcdc"#num, \
0192     .of_match = of_match_ptr("dcdc"#num), \
0193     .regulators_node = of_match_ptr("regulators"), \
0194     .id = ATC2603C_ID_DCDC##num, \
0195     .ops = &atc260x_dcdc_range_ops, \
0196     .type = REGULATOR_VOLTAGE, \
0197     .n_voltages = 16, \
0198     .linear_ranges = atc2603c_dcdc_voltage_ranges, \
0199     .n_linear_ranges = ARRAY_SIZE(atc2603c_dcdc_voltage_ranges), \
0200     .vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \
0201     .vsel_mask = GENMASK(vsel_h, vsel_l), \
0202     .enable_reg = ATC2603C_PMU_DC##num##_CTL0, \
0203     .enable_mask = BIT(15), \
0204     .enable_time = 800, \
0205     .owner = THIS_MODULE, \
0206 }
0207 
0208 #define atc2603c_reg_desc_dcdc_fixed(num, min, step, n_volt, vsel_h, vsel_l) { \
0209     .name = "DCDC"#num, \
0210     .supply_name = "dcdc"#num, \
0211     .of_match = of_match_ptr("dcdc"#num), \
0212     .regulators_node = of_match_ptr("regulators"), \
0213     .id = ATC2603C_ID_DCDC##num, \
0214     .ops = &atc260x_dcdc_fixed_ops, \
0215     .type = REGULATOR_VOLTAGE, \
0216     .min_uV = min, \
0217     .uV_step = step, \
0218     .n_voltages = n_volt, \
0219     .vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \
0220     .vsel_mask = GENMASK(vsel_h, vsel_l), \
0221     .enable_time = 800, \
0222     .owner = THIS_MODULE, \
0223 }
0224 
0225 #define atc2603c_reg_desc_ldo(num, min, step, n_volt, vsel_h, vsel_l) { \
0226     .name = "LDO"#num, \
0227     .supply_name = "ldo"#num, \
0228     .of_match = of_match_ptr("ldo"#num), \
0229     .regulators_node = of_match_ptr("regulators"), \
0230     .id = ATC2603C_ID_LDO##num, \
0231     .ops = &atc260x_ldo_ops, \
0232     .type = REGULATOR_VOLTAGE, \
0233     .min_uV = min, \
0234     .uV_step = step, \
0235     .n_voltages = n_volt, \
0236     .vsel_reg = ATC2603C_PMU_LDO##num##_CTL, \
0237     .vsel_mask = GENMASK(vsel_h, vsel_l), \
0238     .enable_reg = ATC2603C_PMU_LDO##num##_CTL, \
0239     .enable_mask = BIT(0), \
0240     .enable_time = 2000, \
0241     .owner = THIS_MODULE, \
0242 }
0243 
0244 #define atc2603c_reg_desc_ldo_fixed(num, min, step, n_volt, vsel_h, vsel_l) { \
0245     .name = "LDO"#num, \
0246     .supply_name = "ldo"#num, \
0247     .of_match = of_match_ptr("ldo"#num), \
0248     .regulators_node = of_match_ptr("regulators"), \
0249     .id = ATC2603C_ID_LDO##num, \
0250     .ops = &atc260x_ldo_fixed_ops, \
0251     .type = REGULATOR_VOLTAGE, \
0252     .min_uV = min, \
0253     .uV_step = step, \
0254     .n_voltages = n_volt, \
0255     .vsel_reg = ATC2603C_PMU_LDO##num##_CTL, \
0256     .vsel_mask = GENMASK(vsel_h, vsel_l), \
0257     .enable_time = 2000, \
0258     .owner = THIS_MODULE, \
0259 }
0260 
0261 #define atc2603c_reg_desc_ldo_noops(num, vfixed) { \
0262     .name = "LDO"#num, \
0263     .supply_name = "ldo"#num, \
0264     .of_match = of_match_ptr("ldo"#num), \
0265     .regulators_node = of_match_ptr("regulators"), \
0266     .id = ATC2603C_ID_LDO##num, \
0267     .ops = &atc260x_no_ops, \
0268     .type = REGULATOR_VOLTAGE, \
0269     .fixed_uV = vfixed, \
0270     .n_voltages = 1, \
0271     .owner = THIS_MODULE, \
0272 }
0273 
0274 #define atc2603c_reg_desc_ldo_switch(num, min, step, n_volt, vsel_h, vsel_l) { \
0275     .name = "SWITCHLDO"#num, \
0276     .supply_name = "switchldo"#num, \
0277     .of_match = of_match_ptr("switchldo"#num), \
0278     .regulators_node = of_match_ptr("regulators"), \
0279     .id = ATC2603C_ID_SWITCHLDO##num, \
0280     .ops = &atc260x_ldo_bypass_discharge_ops, \
0281     .type = REGULATOR_VOLTAGE, \
0282     .min_uV = min, \
0283     .uV_step = step, \
0284     .n_voltages = n_volt, \
0285     .vsel_reg = ATC2603C_PMU_SWITCH_CTL, \
0286     .vsel_mask = GENMASK(vsel_h, vsel_l), \
0287     .enable_reg = ATC2603C_PMU_SWITCH_CTL, \
0288     .enable_mask = BIT(15), \
0289     .enable_is_inverted = true, \
0290     .enable_time = 2000, \
0291     .bypass_reg = ATC2603C_PMU_SWITCH_CTL, \
0292     .bypass_mask = BIT(5), \
0293     .active_discharge_reg = ATC2603C_PMU_SWITCH_CTL, \
0294     .active_discharge_mask = BIT(1), \
0295     .active_discharge_on = BIT(1), \
0296     .owner = THIS_MODULE, \
0297 }
0298 
0299 static const struct regulator_desc atc2603c_reg[] = {
0300     atc2603c_reg_desc_dcdc_fixed(1, 700000, 25000, 29, 11, 7),
0301     atc2603c_reg_desc_dcdc_range(2, 12, 8),
0302     atc2603c_reg_desc_dcdc_fixed(3, 2600000, 100000, 8, 11, 9),
0303     atc2603c_reg_desc_ldo_fixed(1, 2600000, 100000, 8, 15, 13),
0304     atc2603c_reg_desc_ldo_fixed(2, 2600000, 100000, 8, 15, 13),
0305     atc2603c_reg_desc_ldo_fixed(3, 1500000, 100000, 6, 15, 13),
0306     atc2603c_reg_desc_ldo(5, 2600000, 100000, 8, 15, 13),
0307     atc2603c_reg_desc_ldo_fixed(6, 700000, 25000, 29, 15, 11),
0308     atc2603c_reg_desc_ldo(7, 1500000, 100000, 6, 15, 13),
0309     atc2603c_reg_desc_ldo(8, 2300000, 100000, 11, 15, 12),
0310     atc2603c_reg_desc_ldo_fixed(11, 2600000, 100000, 8, 15, 13),
0311     atc2603c_reg_desc_ldo_noops(12, 1800000),
0312     atc2603c_reg_desc_ldo_switch(1, 3000000, 100000, 4, 4, 3),
0313 };
0314 
0315 static const struct regulator_desc atc2603c_reg_dcdc2_ver_b =
0316     atc2603c_reg_desc_dcdc(2, 1000000, 50000, 18, 12, 8);
0317 
0318 enum atc2609a_reg_ids {
0319     ATC2609A_ID_DCDC0,
0320     ATC2609A_ID_DCDC1,
0321     ATC2609A_ID_DCDC2,
0322     ATC2609A_ID_DCDC3,
0323     ATC2609A_ID_DCDC4,
0324     ATC2609A_ID_LDO0,
0325     ATC2609A_ID_LDO1,
0326     ATC2609A_ID_LDO2,
0327     ATC2609A_ID_LDO3,
0328     ATC2609A_ID_LDO4,
0329     ATC2609A_ID_LDO5,
0330     ATC2609A_ID_LDO6,
0331     ATC2609A_ID_LDO7,
0332     ATC2609A_ID_LDO8,
0333     ATC2609A_ID_LDO9,
0334     ATC2609A_ID_MAX,
0335 };
0336 
0337 #define atc2609a_reg_desc_dcdc(num, en_bit) { \
0338     .name = "DCDC"#num, \
0339     .supply_name = "dcdc"#num, \
0340     .of_match = of_match_ptr("dcdc"#num), \
0341     .regulators_node = of_match_ptr("regulators"), \
0342     .id = ATC2609A_ID_DCDC##num, \
0343     .ops = &atc260x_dcdc_ops, \
0344     .type = REGULATOR_VOLTAGE, \
0345     .min_uV = 600000, \
0346     .uV_step = 6250, \
0347     .n_voltages = 256, \
0348     .vsel_reg = ATC2609A_PMU_DC##num##_CTL0, \
0349     .vsel_mask = GENMASK(15, 8), \
0350     .enable_reg = ATC2609A_PMU_DC_OSC, \
0351     .enable_mask = BIT(en_bit), \
0352     .enable_time = 800, \
0353     .owner = THIS_MODULE, \
0354 }
0355 
0356 #define atc2609a_reg_desc_dcdc_range(num, en_bit) { \
0357     .name = "DCDC"#num, \
0358     .supply_name = "dcdc"#num, \
0359     .of_match = of_match_ptr("dcdc"#num), \
0360     .regulators_node = of_match_ptr("regulators"), \
0361     .id = ATC2609A_ID_DCDC##num, \
0362     .ops = &atc260x_dcdc_range_ops, \
0363     .type = REGULATOR_VOLTAGE, \
0364     .n_voltages = 233, \
0365     .linear_ranges = atc2609a_dcdc_voltage_ranges, \
0366     .n_linear_ranges = ARRAY_SIZE(atc2609a_dcdc_voltage_ranges), \
0367     .vsel_reg = ATC2609A_PMU_DC##num##_CTL0, \
0368     .vsel_mask = GENMASK(15, 8), \
0369     .enable_reg = ATC2609A_PMU_DC_OSC, \
0370     .enable_mask = BIT(en_bit), \
0371     .enable_time = 800, \
0372     .owner = THIS_MODULE, \
0373 }
0374 
0375 #define atc2609a_reg_desc_ldo(num) { \
0376     .name = "LDO"#num, \
0377     .supply_name = "ldo"#num, \
0378     .of_match = of_match_ptr("ldo"#num), \
0379     .regulators_node = of_match_ptr("regulators"), \
0380     .id = ATC2609A_ID_LDO##num, \
0381     .ops = &atc260x_ldo_ops, \
0382     .type = REGULATOR_VOLTAGE, \
0383     .min_uV = 700000, \
0384     .uV_step = 100000, \
0385     .n_voltages = 16, \
0386     .vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0387     .vsel_mask = GENMASK(4, 1), \
0388     .enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0389     .enable_mask = BIT(0), \
0390     .enable_time = 2000, \
0391     .owner = THIS_MODULE, \
0392 }
0393 
0394 #define atc2609a_reg_desc_ldo_bypass(num) { \
0395     .name = "LDO"#num, \
0396     .supply_name = "ldo"#num, \
0397     .of_match = of_match_ptr("ldo"#num), \
0398     .regulators_node = of_match_ptr("regulators"), \
0399     .id = ATC2609A_ID_LDO##num, \
0400     .ops = &atc260x_ldo_bypass_ops, \
0401     .type = REGULATOR_VOLTAGE, \
0402     .min_uV = 2300000, \
0403     .uV_step = 100000, \
0404     .n_voltages = 12, \
0405     .vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0406     .vsel_mask = GENMASK(5, 2), \
0407     .enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0408     .enable_mask = BIT(0), \
0409     .enable_time = 2000, \
0410     .bypass_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0411     .bypass_mask = BIT(1), \
0412     .owner = THIS_MODULE, \
0413 }
0414 
0415 #define atc2609a_reg_desc_ldo_range_pick(num, n_range, n_volt) { \
0416     .name = "LDO"#num, \
0417     .supply_name = "ldo"#num, \
0418     .of_match = of_match_ptr("ldo"#num), \
0419     .regulators_node = of_match_ptr("regulators"), \
0420     .id = ATC2609A_ID_LDO##num, \
0421     .ops = &atc260x_ldo_range_pick_ops, \
0422     .type = REGULATOR_VOLTAGE, \
0423     .linear_ranges = atc2609a_ldo_voltage_ranges##n_range, \
0424     .n_linear_ranges = ARRAY_SIZE(atc2609a_ldo_voltage_ranges##n_range), \
0425     .n_voltages = n_volt, \
0426     .vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0427     .vsel_mask = GENMASK(4, 1), \
0428     .vsel_range_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0429     .vsel_range_mask = BIT(5), \
0430     .linear_range_selectors = atc260x_ldo_voltage_range_sel, \
0431     .enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \
0432     .enable_mask = BIT(0), \
0433     .enable_time = 2000, \
0434     .owner = THIS_MODULE, \
0435 }
0436 
0437 #define atc2609a_reg_desc_ldo_fixed(num) { \
0438     .name = "LDO"#num, \
0439     .supply_name = "ldo"#num, \
0440     .of_match = of_match_ptr("ldo"#num), \
0441     .regulators_node = of_match_ptr("regulators"), \
0442     .id = ATC2609A_ID_LDO##num, \
0443     .ops = &atc260x_ldo_fixed_ops, \
0444     .type = REGULATOR_VOLTAGE, \
0445     .min_uV = 2600000, \
0446     .uV_step = 100000, \
0447     .n_voltages = 8, \
0448     .vsel_reg = ATC2609A_PMU_LDO##num##_CTL, \
0449     .vsel_mask = GENMASK(15, 13), \
0450     .enable_time = 2000, \
0451     .owner = THIS_MODULE, \
0452 }
0453 
0454 static const struct regulator_desc atc2609a_reg[] = {
0455     atc2609a_reg_desc_dcdc(0, 4),
0456     atc2609a_reg_desc_dcdc(1, 5),
0457     atc2609a_reg_desc_dcdc(2, 6),
0458     atc2609a_reg_desc_dcdc_range(3, 7),
0459     atc2609a_reg_desc_dcdc(4, 8),
0460     atc2609a_reg_desc_ldo_bypass(0),
0461     atc2609a_reg_desc_ldo_bypass(1),
0462     atc2609a_reg_desc_ldo_bypass(2),
0463     atc2609a_reg_desc_ldo_range_pick(3, 0, 29),
0464     atc2609a_reg_desc_ldo_range_pick(4, 0, 29),
0465     atc2609a_reg_desc_ldo(5),
0466     atc2609a_reg_desc_ldo_range_pick(6, 1, 28),
0467     atc2609a_reg_desc_ldo_range_pick(7, 0, 29),
0468     atc2609a_reg_desc_ldo_range_pick(8, 0, 29),
0469     atc2609a_reg_desc_ldo_fixed(9),
0470 };
0471 
0472 static int atc260x_regulator_probe(struct platform_device *pdev)
0473 {
0474     struct atc260x *atc260x = dev_get_drvdata(pdev->dev.parent);
0475     struct device *dev = atc260x->dev;
0476     struct atc260x_regulator_data *atc260x_data;
0477     struct regulator_config config = {};
0478     struct regulator_dev *atc260x_rdev;
0479     const struct regulator_desc *regulators;
0480     bool atc2603c_ver_b = false;
0481     int i, nregulators;
0482 
0483     atc260x_data = devm_kzalloc(&pdev->dev, sizeof(*atc260x_data), GFP_KERNEL);
0484     if (!atc260x_data)
0485         return -ENOMEM;
0486 
0487     atc260x_data->voltage_time_dcdc = 350;
0488     atc260x_data->voltage_time_ldo = 800;
0489 
0490     switch (atc260x->ic_type) {
0491     case ATC2603C:
0492         regulators = atc2603c_reg;
0493         nregulators = ATC2603C_ID_MAX;
0494         atc2603c_ver_b = atc260x->ic_ver == ATC260X_B;
0495         break;
0496     case ATC2609A:
0497         atc260x_data->voltage_time_dcdc = 250;
0498         regulators = atc2609a_reg;
0499         nregulators = ATC2609A_ID_MAX;
0500         break;
0501     default:
0502         dev_err(dev, "unsupported ATC260X ID %d\n", atc260x->ic_type);
0503         return -EINVAL;
0504     }
0505 
0506     config.dev = dev;
0507     config.regmap = atc260x->regmap;
0508     config.driver_data = atc260x_data;
0509 
0510     /* Instantiate the regulators */
0511     for (i = 0; i < nregulators; i++) {
0512         if (atc2603c_ver_b && regulators[i].id == ATC2603C_ID_DCDC2)
0513             atc260x_rdev = devm_regulator_register(&pdev->dev,
0514                                    &atc2603c_reg_dcdc2_ver_b,
0515                                    &config);
0516         else
0517             atc260x_rdev = devm_regulator_register(&pdev->dev,
0518                                    &regulators[i],
0519                                    &config);
0520         if (IS_ERR(atc260x_rdev)) {
0521             dev_err(dev, "failed to register regulator: %d\n", i);
0522             return PTR_ERR(atc260x_rdev);
0523         }
0524     }
0525 
0526     return 0;
0527 }
0528 
0529 static struct platform_driver atc260x_regulator_driver = {
0530     .probe = atc260x_regulator_probe,
0531     .driver = {
0532         .name = "atc260x-regulator",
0533     },
0534 };
0535 
0536 module_platform_driver(atc260x_regulator_driver);
0537 
0538 MODULE_DESCRIPTION("Regulator driver for ATC260x PMICs");
0539 MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
0540 MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>");
0541 MODULE_LICENSE("GPL");
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