Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Regulator driver for TI TPS6586x |
| 3 | * |
| 4 | * Copyright (C) 2010 Compulab Ltd. |
| 5 | * Author: Mike Rapoport <mike@compulab.co.il> |
| 6 | * |
| 7 | * Based on da903x |
| 8 | * Copyright (C) 2006-2008 Marvell International Ltd. |
| 9 | * Copyright (C) 2008 Compulab Ltd. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | */ |
| 15 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 16 | #include <linux/kernel.h> |
Paul Gortmaker | 65602c3 | 2011-07-17 16:28:23 -0400 | [diff] [blame] | 17 | #include <linux/module.h> |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 18 | #include <linux/init.h> |
| 19 | #include <linux/err.h> |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 20 | #include <linux/of.h> |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 21 | #include <linux/slab.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/regulator/driver.h> |
| 24 | #include <linux/regulator/machine.h> |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 25 | #include <linux/regulator/of_regulator.h> |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 26 | #include <linux/mfd/tps6586x.h> |
| 27 | |
| 28 | /* supply control and voltage setting */ |
| 29 | #define TPS6586X_SUPPLYENA 0x10 |
| 30 | #define TPS6586X_SUPPLYENB 0x11 |
| 31 | #define TPS6586X_SUPPLYENC 0x12 |
| 32 | #define TPS6586X_SUPPLYEND 0x13 |
| 33 | #define TPS6586X_SUPPLYENE 0x14 |
| 34 | #define TPS6586X_VCC1 0x20 |
| 35 | #define TPS6586X_VCC2 0x21 |
| 36 | #define TPS6586X_SM1V1 0x23 |
| 37 | #define TPS6586X_SM1V2 0x24 |
| 38 | #define TPS6586X_SM1SL 0x25 |
| 39 | #define TPS6586X_SM0V1 0x26 |
| 40 | #define TPS6586X_SM0V2 0x27 |
| 41 | #define TPS6586X_SM0SL 0x28 |
| 42 | #define TPS6586X_LDO2AV1 0x29 |
| 43 | #define TPS6586X_LDO2AV2 0x2A |
| 44 | #define TPS6586X_LDO2BV1 0x2F |
| 45 | #define TPS6586X_LDO2BV2 0x30 |
| 46 | #define TPS6586X_LDO4V1 0x32 |
| 47 | #define TPS6586X_LDO4V2 0x33 |
| 48 | |
| 49 | /* converter settings */ |
| 50 | #define TPS6586X_SUPPLYV1 0x41 |
| 51 | #define TPS6586X_SUPPLYV2 0x42 |
| 52 | #define TPS6586X_SUPPLYV3 0x43 |
| 53 | #define TPS6586X_SUPPLYV4 0x44 |
| 54 | #define TPS6586X_SUPPLYV5 0x45 |
| 55 | #define TPS6586X_SUPPLYV6 0x46 |
| 56 | #define TPS6586X_SMODE1 0x47 |
| 57 | #define TPS6586X_SMODE2 0x48 |
| 58 | |
| 59 | struct tps6586x_regulator { |
| 60 | struct regulator_desc desc; |
| 61 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 62 | int enable_bit[2]; |
| 63 | int enable_reg[2]; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev) |
| 67 | { |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 68 | return rdev_get_dev(rdev)->parent; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 69 | } |
| 70 | |
Axel Lin | e181623 | 2012-03-24 09:44:42 +0800 | [diff] [blame] | 71 | static struct regulator_ops tps6586x_regulator_ops = { |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 72 | .list_voltage = regulator_list_voltage_table, |
Axel Lin | 4d673bb | 2013-04-20 11:35:13 +0800 | [diff] [blame] | 73 | .map_voltage = regulator_map_voltage_ascend, |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 74 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 75 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 76 | |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 77 | .is_enabled = regulator_is_enabled_regmap, |
| 78 | .enable = regulator_enable_regmap, |
| 79 | .disable = regulator_disable_regmap, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 80 | }; |
| 81 | |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 82 | static struct regulator_ops tps6586x_sys_regulator_ops = { |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 83 | }; |
| 84 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 85 | static const unsigned int tps6586x_ldo0_voltages[] = { |
| 86 | 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 87 | }; |
| 88 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 89 | static const unsigned int tps6586x_ldo4_voltages[] = { |
| 90 | 1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000, |
| 91 | 1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000, |
| 92 | 2100000, 2125000, 2150000, 2175000, 2200000, 2225000, 2250000, 2275000, |
| 93 | 2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 94 | }; |
| 95 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 96 | #define tps658623_sm2_voltages tps6586x_ldo4_voltages |
| 97 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 98 | static const unsigned int tps6586x_ldo_voltages[] = { |
| 99 | 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
Gary King | 4cc2e39 | 2010-07-30 22:58:58 +0300 | [diff] [blame] | 100 | }; |
| 101 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 102 | static const unsigned int tps6586x_sm2_voltages[] = { |
| 103 | 3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000, |
| 104 | 3400000, 3450000, 3500000, 3550000, 3600000, 3650000, 3700000, 3750000, |
| 105 | 3800000, 3850000, 3900000, 3950000, 4000000, 4050000, 4100000, 4150000, |
| 106 | 4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000, |
| 107 | }; |
| 108 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 109 | static const unsigned int tps658643_sm2_voltages[] = { |
| 110 | 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 1200000, |
| 111 | 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 1400000, |
| 112 | 1425000, 1450000, 1475000, 1500000, 1525000, 1550000, 1575000, 1600000, |
| 113 | 1625000, 1650000, 1675000, 1700000, 1725000, 1750000, 1775000, 1800000, |
| 114 | }; |
| 115 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 116 | static const unsigned int tps6586x_dvm_voltages[] = { |
| 117 | 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, |
| 118 | 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, |
| 119 | 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, |
| 120 | 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 121 | }; |
| 122 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 123 | #define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits, \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 124 | ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 125 | .desc = { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 126 | .supply_name = _pin_name, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 127 | .name = "REG-" #_id, \ |
Axel Lin | e181623 | 2012-03-24 09:44:42 +0800 | [diff] [blame] | 128 | .ops = &tps6586x_regulator_ops, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 129 | .type = REGULATOR_VOLTAGE, \ |
| 130 | .id = TPS6586X_ID_##_id, \ |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 131 | .n_voltages = ARRAY_SIZE(vdata##_voltages), \ |
| 132 | .volt_table = vdata##_voltages, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 133 | .owner = THIS_MODULE, \ |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 134 | .enable_reg = TPS6586X_SUPPLY##ereg0, \ |
| 135 | .enable_mask = 1 << (ebit0), \ |
| 136 | .vsel_reg = TPS6586X_##vreg, \ |
| 137 | .vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 138 | .apply_reg = (goreg), \ |
| 139 | .apply_bit = (gobit), \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 140 | }, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 141 | .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
| 142 | .enable_bit[0] = (ebit0), \ |
| 143 | .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 144 | .enable_bit[1] = (ebit1), |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 145 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 146 | #define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 147 | ereg0, ebit0, ereg1, ebit1) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 148 | { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 149 | TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 150 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 151 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 152 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 153 | #define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 154 | ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 155 | { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 156 | TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 157 | ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 158 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 159 | |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 160 | #define TPS6586X_SYS_REGULATOR() \ |
| 161 | { \ |
| 162 | .desc = { \ |
| 163 | .supply_name = "sys", \ |
| 164 | .name = "REG-SYS", \ |
| 165 | .ops = &tps6586x_sys_regulator_ops, \ |
| 166 | .type = REGULATOR_VOLTAGE, \ |
| 167 | .id = TPS6586X_ID_SYS, \ |
| 168 | .owner = THIS_MODULE, \ |
| 169 | }, \ |
| 170 | } |
| 171 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 172 | static struct tps6586x_regulator tps6586x_regulator[] = { |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 173 | TPS6586X_SYS_REGULATOR(), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 174 | TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0, |
| 175 | END, 0), |
| 176 | TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2, |
| 177 | END, 2), |
| 178 | TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6, |
| 179 | ENE, 6), |
| 180 | TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4, |
| 181 | END, 4), |
| 182 | TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5, |
| 183 | END, 5), |
| 184 | TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6, |
| 185 | END, 6), |
| 186 | TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7, |
| 187 | ENE, 7), |
| 188 | TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7, |
| 189 | V4, 7), |
| 190 | TPS6586X_LDO(LDO_1, "vinldo01", tps6586x_dvm, SUPPLYV1, 0, 5, ENC, 1, |
| 191 | END, 1), |
| 192 | TPS6586X_LDO(SM_2, "vin-sm2", tps6586x_sm2, SUPPLYV2, 0, 5, ENC, 7, |
| 193 | END, 7), |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 194 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 195 | TPS6586X_DVM(LDO_2, "vinldo23", tps6586x_dvm, LDO2BV1, 0, 5, ENA, 3, |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 196 | ENB, 3, TPS6586X_VCC2, BIT(6)), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 197 | TPS6586X_DVM(LDO_4, "vinldo4", tps6586x_ldo4, LDO4V1, 0, 5, ENC, 3, |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 198 | END, 3, TPS6586X_VCC1, BIT(6)), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 199 | TPS6586X_DVM(SM_0, "vin-sm0", tps6586x_dvm, SM0V1, 0, 5, ENA, 1, |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 200 | ENB, 1, TPS6586X_VCC1, BIT(2)), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 201 | TPS6586X_DVM(SM_1, "vin-sm1", tps6586x_dvm, SM1V1, 0, 5, ENA, 0, |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 202 | ENB, 0, TPS6586X_VCC1, BIT(0)), |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 203 | }; |
| 204 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 205 | static struct tps6586x_regulator tps658623_regulator[] = { |
| 206 | TPS6586X_LDO(SM_2, "vin-sm2", tps658623_sm2, SUPPLYV2, 0, 5, ENC, 7, |
| 207 | END, 7), |
| 208 | }; |
| 209 | |
| 210 | static struct tps6586x_regulator tps658643_regulator[] = { |
| 211 | TPS6586X_LDO(SM_2, "vin-sm2", tps658643_sm2, SUPPLYV2, 0, 5, ENC, 7, |
| 212 | END, 7), |
| 213 | }; |
| 214 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 215 | /* |
| 216 | * TPS6586X has 2 enable bits that are OR'ed to determine the actual |
| 217 | * regulator state. Clearing one of this bits allows switching |
| 218 | * regulator on and of with single register write. |
| 219 | */ |
| 220 | static inline int tps6586x_regulator_preinit(struct device *parent, |
| 221 | struct tps6586x_regulator *ri) |
| 222 | { |
| 223 | uint8_t val1, val2; |
| 224 | int ret; |
| 225 | |
Danny Huang | 1dbcf35 | 2010-12-01 13:37:30 -0700 | [diff] [blame] | 226 | if (ri->enable_reg[0] == ri->enable_reg[1] && |
| 227 | ri->enable_bit[0] == ri->enable_bit[1]) |
| 228 | return 0; |
| 229 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 230 | ret = tps6586x_read(parent, ri->enable_reg[0], &val1); |
| 231 | if (ret) |
| 232 | return ret; |
| 233 | |
| 234 | ret = tps6586x_read(parent, ri->enable_reg[1], &val2); |
| 235 | if (ret) |
| 236 | return ret; |
| 237 | |
Danny Huang | 4f586707 | 2010-12-01 13:37:28 -0700 | [diff] [blame] | 238 | if (!(val2 & (1 << ri->enable_bit[1]))) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 239 | return 0; |
| 240 | |
| 241 | /* |
| 242 | * The regulator is on, but it's enabled with the bit we don't |
| 243 | * want to use, so we switch the enable bits |
| 244 | */ |
Danny Huang | 4f586707 | 2010-12-01 13:37:28 -0700 | [diff] [blame] | 245 | if (!(val1 & (1 << ri->enable_bit[0]))) { |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 246 | ret = tps6586x_set_bits(parent, ri->enable_reg[0], |
| 247 | 1 << ri->enable_bit[0]); |
| 248 | if (ret) |
| 249 | return ret; |
| 250 | } |
| 251 | |
| 252 | return tps6586x_clr_bits(parent, ri->enable_reg[1], |
| 253 | 1 << ri->enable_bit[1]); |
| 254 | } |
| 255 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 256 | static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev, |
| 257 | int id, struct regulator_init_data *p) |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 258 | { |
| 259 | struct device *parent = pdev->dev.parent; |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 260 | struct tps6586x_settings *setting = p->driver_data; |
| 261 | uint8_t reg; |
| 262 | |
| 263 | if (setting == NULL) |
| 264 | return 0; |
| 265 | |
| 266 | if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET)) |
| 267 | return 0; |
| 268 | |
| 269 | /* only SM0 and SM1 can have the slew rate settings */ |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 270 | switch (id) { |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 271 | case TPS6586X_ID_SM_0: |
| 272 | reg = TPS6586X_SM0SL; |
| 273 | break; |
| 274 | case TPS6586X_ID_SM_1: |
| 275 | reg = TPS6586X_SM1SL; |
| 276 | break; |
| 277 | default: |
Axel Lin | 6673d66 | 2013-02-20 10:23:46 +0800 | [diff] [blame] | 278 | dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n"); |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 279 | return -EINVAL; |
| 280 | } |
| 281 | |
| 282 | return tps6586x_write(parent, reg, |
| 283 | setting->slew_rate & TPS6586X_SLEW_RATE_MASK); |
| 284 | } |
| 285 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 286 | static struct tps6586x_regulator *find_regulator_info(int id, int version) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 287 | { |
| 288 | struct tps6586x_regulator *ri; |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 289 | struct tps6586x_regulator *table = NULL; |
| 290 | int num; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 291 | int i; |
| 292 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 293 | switch (version) { |
| 294 | case TPS658623: |
| 295 | table = tps658623_regulator; |
| 296 | num = ARRAY_SIZE(tps658623_regulator); |
| 297 | break; |
| 298 | case TPS658643: |
| 299 | table = tps658643_regulator; |
| 300 | num = ARRAY_SIZE(tps658643_regulator); |
| 301 | break; |
| 302 | } |
| 303 | |
| 304 | /* Search version specific table first */ |
| 305 | if (table) { |
| 306 | for (i = 0; i < num; i++) { |
| 307 | ri = &table[i]; |
| 308 | if (ri->desc.id == id) |
| 309 | return ri; |
| 310 | } |
| 311 | } |
| 312 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 313 | for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) { |
| 314 | ri = &tps6586x_regulator[i]; |
| 315 | if (ri->desc.id == id) |
| 316 | return ri; |
| 317 | } |
| 318 | return NULL; |
| 319 | } |
| 320 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 321 | #ifdef CONFIG_OF |
| 322 | static struct of_regulator_match tps6586x_matches[] = { |
| 323 | { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS }, |
| 324 | { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 }, |
| 325 | { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 }, |
| 326 | { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 }, |
| 327 | { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 }, |
| 328 | { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 }, |
| 329 | { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 }, |
| 330 | { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 }, |
| 331 | { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 }, |
| 332 | { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 }, |
| 333 | { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 }, |
| 334 | { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 }, |
| 335 | { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 }, |
| 336 | { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 }, |
| 337 | { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC }, |
| 338 | }; |
| 339 | |
| 340 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
| 341 | struct platform_device *pdev, |
| 342 | struct of_regulator_match **tps6586x_reg_matches) |
| 343 | { |
| 344 | const unsigned int num = ARRAY_SIZE(tps6586x_matches); |
| 345 | struct device_node *np = pdev->dev.parent->of_node; |
| 346 | struct device_node *regs; |
| 347 | const char *sys_rail = NULL; |
| 348 | unsigned int i; |
| 349 | struct tps6586x_platform_data *pdata; |
| 350 | int err; |
| 351 | |
Laxman Dewangan | 712c967 | 2013-10-08 19:31:03 +0530 | [diff] [blame] | 352 | regs = of_get_child_by_name(np, "regulators"); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 353 | if (!regs) { |
| 354 | dev_err(&pdev->dev, "regulator node not found\n"); |
| 355 | return NULL; |
| 356 | } |
| 357 | |
| 358 | err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num); |
Guennadi Liakhovetski | 0a4ccca | 2013-02-25 12:34:09 +0100 | [diff] [blame] | 359 | of_node_put(regs); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 360 | if (err < 0) { |
| 361 | dev_err(&pdev->dev, "Regulator match failed, e %d\n", err); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 362 | return NULL; |
| 363 | } |
| 364 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 365 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
Sachin Kamat | 02e9058 | 2014-02-20 14:23:17 +0530 | [diff] [blame] | 366 | if (!pdata) |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 367 | return NULL; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 368 | |
| 369 | for (i = 0; i < num; i++) { |
| 370 | int id; |
| 371 | if (!tps6586x_matches[i].init_data) |
| 372 | continue; |
| 373 | |
| 374 | pdata->reg_init_data[i] = tps6586x_matches[i].init_data; |
| 375 | id = (int)tps6586x_matches[i].driver_data; |
| 376 | if (id == TPS6586X_ID_SYS) |
| 377 | sys_rail = pdata->reg_init_data[i]->constraints.name; |
| 378 | |
| 379 | if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC)) |
| 380 | pdata->reg_init_data[i]->supply_regulator = sys_rail; |
| 381 | } |
| 382 | *tps6586x_reg_matches = tps6586x_matches; |
| 383 | return pdata; |
| 384 | } |
| 385 | #else |
| 386 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
| 387 | struct platform_device *pdev, |
| 388 | struct of_regulator_match **tps6586x_reg_matches) |
| 389 | { |
| 390 | *tps6586x_reg_matches = NULL; |
| 391 | return NULL; |
| 392 | } |
| 393 | #endif |
| 394 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 395 | static int tps6586x_regulator_probe(struct platform_device *pdev) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 396 | { |
| 397 | struct tps6586x_regulator *ri = NULL; |
Mark Brown | c172708 | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 398 | struct regulator_config config = { }; |
Axel Lin | d6fe2c7 | 2014-03-08 21:15:59 +0800 | [diff] [blame] | 399 | struct regulator_dev *rdev; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 400 | struct regulator_init_data *reg_data; |
| 401 | struct tps6586x_platform_data *pdata; |
| 402 | struct of_regulator_match *tps6586x_reg_matches = NULL; |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 403 | int version; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 404 | int id; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 405 | int err; |
| 406 | |
Laxman Dewangan | 1083560 | 2012-11-27 04:44:28 +0530 | [diff] [blame] | 407 | dev_dbg(&pdev->dev, "Probing regulator\n"); |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 408 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 409 | pdata = dev_get_platdata(pdev->dev.parent); |
| 410 | if ((!pdata) && (pdev->dev.parent->of_node)) |
| 411 | pdata = tps6586x_parse_regulator_dt(pdev, |
| 412 | &tps6586x_reg_matches); |
| 413 | |
| 414 | if (!pdata) { |
| 415 | dev_err(&pdev->dev, "Platform data not available, exiting\n"); |
| 416 | return -ENODEV; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 417 | } |
| 418 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 419 | version = tps6586x_get_version(pdev->dev.parent); |
| 420 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 421 | for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) { |
| 422 | reg_data = pdata->reg_init_data[id]; |
Mark Brown | c172708 | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 423 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 424 | ri = find_regulator_info(id, version); |
| 425 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 426 | if (!ri) { |
| 427 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); |
Sachin Kamat | 884ea55 | 2013-09-04 17:17:50 +0530 | [diff] [blame] | 428 | return -EINVAL; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | err = tps6586x_regulator_preinit(pdev->dev.parent, ri); |
| 432 | if (err) { |
| 433 | dev_err(&pdev->dev, |
| 434 | "regulator %d preinit failed, e %d\n", id, err); |
Sachin Kamat | 884ea55 | 2013-09-04 17:17:50 +0530 | [diff] [blame] | 435 | return err; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | config.dev = pdev->dev.parent; |
| 439 | config.init_data = reg_data; |
| 440 | config.driver_data = ri; |
| 441 | |
| 442 | if (tps6586x_reg_matches) |
| 443 | config.of_node = tps6586x_reg_matches[id].of_node; |
| 444 | |
Axel Lin | d6fe2c7 | 2014-03-08 21:15:59 +0800 | [diff] [blame] | 445 | rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config); |
| 446 | if (IS_ERR(rdev)) { |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 447 | dev_err(&pdev->dev, "failed to register regulator %s\n", |
| 448 | ri->desc.name); |
Axel Lin | d6fe2c7 | 2014-03-08 21:15:59 +0800 | [diff] [blame] | 449 | return PTR_ERR(rdev); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | if (reg_data) { |
| 453 | err = tps6586x_regulator_set_slew_rate(pdev, id, |
| 454 | reg_data); |
| 455 | if (err < 0) { |
| 456 | dev_err(&pdev->dev, |
| 457 | "Slew rate config failed, e %d\n", err); |
Sachin Kamat | 884ea55 | 2013-09-04 17:17:50 +0530 | [diff] [blame] | 458 | return err; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 459 | } |
| 460 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 461 | } |
| 462 | |
Axel Lin | e7973c3 | 2010-08-09 15:58:06 +0800 | [diff] [blame] | 463 | platform_set_drvdata(pdev, rdev); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 464 | return 0; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 465 | } |
| 466 | |
| 467 | static struct platform_driver tps6586x_regulator_driver = { |
| 468 | .driver = { |
Marc Dietrich | ec8da80 | 2013-06-10 22:27:55 +0200 | [diff] [blame] | 469 | .name = "tps6586x-regulator", |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 470 | .owner = THIS_MODULE, |
| 471 | }, |
| 472 | .probe = tps6586x_regulator_probe, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 473 | }; |
| 474 | |
| 475 | static int __init tps6586x_regulator_init(void) |
| 476 | { |
| 477 | return platform_driver_register(&tps6586x_regulator_driver); |
| 478 | } |
| 479 | subsys_initcall(tps6586x_regulator_init); |
| 480 | |
| 481 | static void __exit tps6586x_regulator_exit(void) |
| 482 | { |
| 483 | platform_driver_unregister(&tps6586x_regulator_driver); |
| 484 | } |
| 485 | module_exit(tps6586x_regulator_exit); |
| 486 | |
| 487 | MODULE_LICENSE("GPL"); |
| 488 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); |
| 489 | MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC"); |
| 490 | MODULE_ALIAS("platform:tps6586x-regulator"); |