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]; |
| 64 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 65 | /* for DVM regulators */ |
| 66 | int go_reg; |
| 67 | int go_bit; |
| 68 | }; |
| 69 | |
| 70 | static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev) |
| 71 | { |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 72 | return rdev_get_dev(rdev)->parent; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 73 | } |
| 74 | |
Axel Lin | eed0651 | 2012-03-24 09:42:26 +0800 | [diff] [blame] | 75 | static int tps6586x_set_voltage_sel(struct regulator_dev *rdev, |
| 76 | unsigned selector) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 77 | { |
| 78 | struct tps6586x_regulator *ri = rdev_get_drvdata(rdev); |
| 79 | struct device *parent = to_tps6586x_dev(rdev); |
Axel Lin | eed0651 | 2012-03-24 09:42:26 +0800 | [diff] [blame] | 80 | int ret, val, rid = rdev_get_id(rdev); |
| 81 | uint8_t mask; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 82 | |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 83 | val = selector << (ffs(rdev->desc->vsel_mask) - 1); |
| 84 | mask = rdev->desc->vsel_mask; |
Axel Lin | eed0651 | 2012-03-24 09:42:26 +0800 | [diff] [blame] | 85 | |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 86 | ret = tps6586x_update(parent, rdev->desc->vsel_reg, val, mask); |
Axel Lin | eed0651 | 2012-03-24 09:42:26 +0800 | [diff] [blame] | 87 | if (ret) |
| 88 | return ret; |
| 89 | |
| 90 | /* Update go bit for DVM regulators */ |
| 91 | switch (rid) { |
| 92 | case TPS6586X_ID_LDO_2: |
| 93 | case TPS6586X_ID_LDO_4: |
| 94 | case TPS6586X_ID_SM_0: |
| 95 | case TPS6586X_ID_SM_1: |
| 96 | ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit); |
| 97 | break; |
| 98 | } |
| 99 | return ret; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 100 | } |
| 101 | |
Axel Lin | e181623 | 2012-03-24 09:44:42 +0800 | [diff] [blame] | 102 | static struct regulator_ops tps6586x_regulator_ops = { |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 103 | .list_voltage = regulator_list_voltage_table, |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 104 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | eed0651 | 2012-03-24 09:42:26 +0800 | [diff] [blame] | 105 | .set_voltage_sel = tps6586x_set_voltage_sel, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 106 | |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 107 | .is_enabled = regulator_is_enabled_regmap, |
| 108 | .enable = regulator_enable_regmap, |
| 109 | .disable = regulator_disable_regmap, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 110 | }; |
| 111 | |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 112 | static struct regulator_ops tps6586x_sys_regulator_ops = { |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 113 | }; |
| 114 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 115 | static const unsigned int tps6586x_ldo0_voltages[] = { |
| 116 | 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 117 | }; |
| 118 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 119 | static const unsigned int tps6586x_ldo4_voltages[] = { |
| 120 | 1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000, |
| 121 | 1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000, |
| 122 | 2100000, 2125000, 2150000, 2175000, 2200000, 2225000, 2250000, 2275000, |
| 123 | 2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 124 | }; |
| 125 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 126 | static const unsigned int tps6586x_ldo_voltages[] = { |
| 127 | 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
Gary King | 4cc2e39 | 2010-07-30 22:58:58 +0300 | [diff] [blame] | 128 | }; |
| 129 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 130 | static const unsigned int tps6586x_sm2_voltages[] = { |
| 131 | 3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000, |
| 132 | 3400000, 3450000, 3500000, 3550000, 3600000, 3650000, 3700000, 3750000, |
| 133 | 3800000, 3850000, 3900000, 3950000, 4000000, 4050000, 4100000, 4150000, |
| 134 | 4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000, |
| 135 | }; |
| 136 | |
| 137 | static const unsigned int tps6586x_dvm_voltages[] = { |
| 138 | 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, |
| 139 | 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, |
| 140 | 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, |
| 141 | 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 142 | }; |
| 143 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 144 | #define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits, \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 145 | ereg0, ebit0, ereg1, ebit1) \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 146 | .desc = { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 147 | .supply_name = _pin_name, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 148 | .name = "REG-" #_id, \ |
Axel Lin | e181623 | 2012-03-24 09:44:42 +0800 | [diff] [blame] | 149 | .ops = &tps6586x_regulator_ops, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 150 | .type = REGULATOR_VOLTAGE, \ |
| 151 | .id = TPS6586X_ID_##_id, \ |
| 152 | .n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \ |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 153 | .volt_table = tps6586x_##vdata##_voltages, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 154 | .owner = THIS_MODULE, \ |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 155 | .enable_reg = TPS6586X_SUPPLY##ereg0, \ |
| 156 | .enable_mask = 1 << (ebit0), \ |
| 157 | .vsel_reg = TPS6586X_##vreg, \ |
| 158 | .vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 159 | }, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 160 | .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
| 161 | .enable_bit[0] = (ebit0), \ |
| 162 | .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 163 | .enable_bit[1] = (ebit1), |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 164 | |
| 165 | #define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \ |
| 166 | .go_reg = TPS6586X_##goreg, \ |
| 167 | .go_bit = (gobit), |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 168 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 169 | #define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 170 | ereg0, ebit0, ereg1, ebit1) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 171 | { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 172 | TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 173 | ereg0, ebit0, ereg1, ebit1) \ |
| 174 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 175 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 176 | #define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 177 | ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 178 | { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 179 | TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 180 | ereg0, ebit0, ereg1, ebit1) \ |
| 181 | TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \ |
| 182 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 183 | |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 184 | #define TPS6586X_SYS_REGULATOR() \ |
| 185 | { \ |
| 186 | .desc = { \ |
| 187 | .supply_name = "sys", \ |
| 188 | .name = "REG-SYS", \ |
| 189 | .ops = &tps6586x_sys_regulator_ops, \ |
| 190 | .type = REGULATOR_VOLTAGE, \ |
| 191 | .id = TPS6586X_ID_SYS, \ |
| 192 | .owner = THIS_MODULE, \ |
| 193 | }, \ |
| 194 | } |
| 195 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 196 | static struct tps6586x_regulator tps6586x_regulator[] = { |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 197 | TPS6586X_SYS_REGULATOR(), |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 198 | TPS6586X_LDO(LDO_0, "vinldo01", ldo0, SUPPLYV1, 5, 3, ENC, 0, END, 0), |
| 199 | TPS6586X_LDO(LDO_3, "vinldo23", ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2), |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 200 | TPS6586X_LDO(LDO_5, "REG-SYS", ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6), |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 201 | TPS6586X_LDO(LDO_6, "vinldo678", ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4), |
| 202 | TPS6586X_LDO(LDO_7, "vinldo678", ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5), |
| 203 | TPS6586X_LDO(LDO_8, "vinldo678", ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6), |
| 204 | TPS6586X_LDO(LDO_9, "vinldo9", ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7), |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 205 | TPS6586X_LDO(LDO_RTC, "REG-SYS", ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7), |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 206 | TPS6586X_LDO(LDO_1, "vinldo01", dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1), |
Laxman Dewangan | 7f852e0 | 2012-07-24 13:48:00 +0530 | [diff] [blame] | 207 | TPS6586X_LDO(SM_2, "vin-sm2", sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7), |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 208 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 209 | TPS6586X_DVM(LDO_2, "vinldo23", dvm, LDO2BV1, 0, 5, ENA, 3, |
| 210 | ENB, 3, VCC2, 6), |
| 211 | TPS6586X_DVM(LDO_4, "vinldo4", ldo4, LDO4V1, 0, 5, ENC, 3, |
| 212 | END, 3, VCC1, 6), |
Laxman Dewangan | 7f852e0 | 2012-07-24 13:48:00 +0530 | [diff] [blame] | 213 | TPS6586X_DVM(SM_0, "vin-sm0", dvm, SM0V1, 0, 5, ENA, 1, |
| 214 | ENB, 1, VCC1, 2), |
| 215 | TPS6586X_DVM(SM_1, "vin-sm1", dvm, SM1V1, 0, 5, ENA, 0, |
| 216 | ENB, 0, VCC1, 0), |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 217 | }; |
| 218 | |
| 219 | /* |
| 220 | * TPS6586X has 2 enable bits that are OR'ed to determine the actual |
| 221 | * regulator state. Clearing one of this bits allows switching |
| 222 | * regulator on and of with single register write. |
| 223 | */ |
| 224 | static inline int tps6586x_regulator_preinit(struct device *parent, |
| 225 | struct tps6586x_regulator *ri) |
| 226 | { |
| 227 | uint8_t val1, val2; |
| 228 | int ret; |
| 229 | |
Danny Huang | 1dbcf35 | 2010-12-01 13:37:30 -0700 | [diff] [blame] | 230 | if (ri->enable_reg[0] == ri->enable_reg[1] && |
| 231 | ri->enable_bit[0] == ri->enable_bit[1]) |
| 232 | return 0; |
| 233 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 234 | ret = tps6586x_read(parent, ri->enable_reg[0], &val1); |
| 235 | if (ret) |
| 236 | return ret; |
| 237 | |
| 238 | ret = tps6586x_read(parent, ri->enable_reg[1], &val2); |
| 239 | if (ret) |
| 240 | return ret; |
| 241 | |
Danny Huang | 4f586707 | 2010-12-01 13:37:28 -0700 | [diff] [blame] | 242 | if (!(val2 & (1 << ri->enable_bit[1]))) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 243 | return 0; |
| 244 | |
| 245 | /* |
| 246 | * The regulator is on, but it's enabled with the bit we don't |
| 247 | * want to use, so we switch the enable bits |
| 248 | */ |
Danny Huang | 4f586707 | 2010-12-01 13:37:28 -0700 | [diff] [blame] | 249 | if (!(val1 & (1 << ri->enable_bit[0]))) { |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 250 | ret = tps6586x_set_bits(parent, ri->enable_reg[0], |
| 251 | 1 << ri->enable_bit[0]); |
| 252 | if (ret) |
| 253 | return ret; |
| 254 | } |
| 255 | |
| 256 | return tps6586x_clr_bits(parent, ri->enable_reg[1], |
| 257 | 1 << ri->enable_bit[1]); |
| 258 | } |
| 259 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 260 | static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev, |
| 261 | int id, struct regulator_init_data *p) |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 262 | { |
| 263 | struct device *parent = pdev->dev.parent; |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 264 | struct tps6586x_settings *setting = p->driver_data; |
| 265 | uint8_t reg; |
| 266 | |
| 267 | if (setting == NULL) |
| 268 | return 0; |
| 269 | |
| 270 | if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET)) |
| 271 | return 0; |
| 272 | |
| 273 | /* only SM0 and SM1 can have the slew rate settings */ |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 274 | switch (id) { |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 275 | case TPS6586X_ID_SM_0: |
| 276 | reg = TPS6586X_SM0SL; |
| 277 | break; |
| 278 | case TPS6586X_ID_SM_1: |
| 279 | reg = TPS6586X_SM1SL; |
| 280 | break; |
| 281 | default: |
| 282 | dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n"); |
| 283 | return -EINVAL; |
| 284 | } |
| 285 | |
| 286 | return tps6586x_write(parent, reg, |
| 287 | setting->slew_rate & TPS6586X_SLEW_RATE_MASK); |
| 288 | } |
| 289 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 290 | static inline struct tps6586x_regulator *find_regulator_info(int id) |
| 291 | { |
| 292 | struct tps6586x_regulator *ri; |
| 293 | int i; |
| 294 | |
| 295 | for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) { |
| 296 | ri = &tps6586x_regulator[i]; |
| 297 | if (ri->desc.id == id) |
| 298 | return ri; |
| 299 | } |
| 300 | return NULL; |
| 301 | } |
| 302 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 303 | #ifdef CONFIG_OF |
| 304 | static struct of_regulator_match tps6586x_matches[] = { |
| 305 | { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS }, |
| 306 | { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 }, |
| 307 | { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 }, |
| 308 | { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 }, |
| 309 | { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 }, |
| 310 | { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 }, |
| 311 | { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 }, |
| 312 | { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 }, |
| 313 | { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 }, |
| 314 | { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 }, |
| 315 | { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 }, |
| 316 | { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 }, |
| 317 | { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 }, |
| 318 | { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 }, |
| 319 | { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC }, |
| 320 | }; |
| 321 | |
| 322 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
| 323 | struct platform_device *pdev, |
| 324 | struct of_regulator_match **tps6586x_reg_matches) |
| 325 | { |
| 326 | const unsigned int num = ARRAY_SIZE(tps6586x_matches); |
| 327 | struct device_node *np = pdev->dev.parent->of_node; |
| 328 | struct device_node *regs; |
| 329 | const char *sys_rail = NULL; |
| 330 | unsigned int i; |
| 331 | struct tps6586x_platform_data *pdata; |
| 332 | int err; |
| 333 | |
| 334 | regs = of_find_node_by_name(np, "regulators"); |
| 335 | if (!regs) { |
| 336 | dev_err(&pdev->dev, "regulator node not found\n"); |
| 337 | return NULL; |
| 338 | } |
| 339 | |
| 340 | err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num); |
| 341 | if (err < 0) { |
| 342 | dev_err(&pdev->dev, "Regulator match failed, e %d\n", err); |
| 343 | of_node_put(regs); |
| 344 | return NULL; |
| 345 | } |
| 346 | |
| 347 | of_node_put(regs); |
| 348 | |
| 349 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 350 | if (!pdata) { |
| 351 | dev_err(&pdev->dev, "Memory alloction failed\n"); |
| 352 | return NULL; |
| 353 | } |
| 354 | |
| 355 | for (i = 0; i < num; i++) { |
| 356 | int id; |
| 357 | if (!tps6586x_matches[i].init_data) |
| 358 | continue; |
| 359 | |
| 360 | pdata->reg_init_data[i] = tps6586x_matches[i].init_data; |
| 361 | id = (int)tps6586x_matches[i].driver_data; |
| 362 | if (id == TPS6586X_ID_SYS) |
| 363 | sys_rail = pdata->reg_init_data[i]->constraints.name; |
| 364 | |
| 365 | if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC)) |
| 366 | pdata->reg_init_data[i]->supply_regulator = sys_rail; |
| 367 | } |
| 368 | *tps6586x_reg_matches = tps6586x_matches; |
| 369 | return pdata; |
| 370 | } |
| 371 | #else |
| 372 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
| 373 | struct platform_device *pdev, |
| 374 | struct of_regulator_match **tps6586x_reg_matches) |
| 375 | { |
| 376 | *tps6586x_reg_matches = NULL; |
| 377 | return NULL; |
| 378 | } |
| 379 | #endif |
| 380 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 381 | static int __devinit tps6586x_regulator_probe(struct platform_device *pdev) |
| 382 | { |
| 383 | struct tps6586x_regulator *ri = NULL; |
Mark Brown | c172708 | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 384 | struct regulator_config config = { }; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 385 | struct regulator_dev **rdev; |
| 386 | struct regulator_init_data *reg_data; |
| 387 | struct tps6586x_platform_data *pdata; |
| 388 | struct of_regulator_match *tps6586x_reg_matches = NULL; |
| 389 | int id; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 390 | int err; |
| 391 | |
Thierry Reding | 394ee3d | 2012-03-08 15:51:24 +0100 | [diff] [blame] | 392 | dev_dbg(&pdev->dev, "Probing regulator %d\n", id); |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 393 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 394 | pdata = dev_get_platdata(pdev->dev.parent); |
| 395 | if ((!pdata) && (pdev->dev.parent->of_node)) |
| 396 | pdata = tps6586x_parse_regulator_dt(pdev, |
| 397 | &tps6586x_reg_matches); |
| 398 | |
| 399 | if (!pdata) { |
| 400 | dev_err(&pdev->dev, "Platform data not available, exiting\n"); |
| 401 | return -ENODEV; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 402 | } |
| 403 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 404 | rdev = devm_kzalloc(&pdev->dev, TPS6586X_ID_MAX_REGULATOR * |
| 405 | sizeof(*rdev), GFP_KERNEL); |
| 406 | if (!rdev) { |
| 407 | dev_err(&pdev->dev, "Mmemory alloc failed\n"); |
| 408 | return -ENOMEM; |
| 409 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 410 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 411 | for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) { |
| 412 | reg_data = pdata->reg_init_data[id]; |
Mark Brown | c172708 | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 413 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 414 | ri = find_regulator_info(id); |
| 415 | if (!ri) { |
| 416 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); |
| 417 | err = -EINVAL; |
| 418 | goto fail; |
| 419 | } |
| 420 | |
| 421 | err = tps6586x_regulator_preinit(pdev->dev.parent, ri); |
| 422 | if (err) { |
| 423 | dev_err(&pdev->dev, |
| 424 | "regulator %d preinit failed, e %d\n", id, err); |
| 425 | goto fail; |
| 426 | } |
| 427 | |
| 428 | config.dev = pdev->dev.parent; |
| 429 | config.init_data = reg_data; |
| 430 | config.driver_data = ri; |
| 431 | |
| 432 | if (tps6586x_reg_matches) |
| 433 | config.of_node = tps6586x_reg_matches[id].of_node; |
| 434 | |
| 435 | rdev[id] = regulator_register(&ri->desc, &config); |
| 436 | if (IS_ERR(rdev[id])) { |
| 437 | dev_err(&pdev->dev, "failed to register regulator %s\n", |
| 438 | ri->desc.name); |
| 439 | err = PTR_ERR(rdev[id]); |
| 440 | goto fail; |
| 441 | } |
| 442 | |
| 443 | if (reg_data) { |
| 444 | err = tps6586x_regulator_set_slew_rate(pdev, id, |
| 445 | reg_data); |
| 446 | if (err < 0) { |
| 447 | dev_err(&pdev->dev, |
| 448 | "Slew rate config failed, e %d\n", err); |
| 449 | regulator_unregister(rdev[id]); |
| 450 | goto fail; |
| 451 | } |
| 452 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 453 | } |
| 454 | |
Axel Lin | e7973c3 | 2010-08-09 15:58:06 +0800 | [diff] [blame] | 455 | platform_set_drvdata(pdev, rdev); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 456 | return 0; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 457 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 458 | fail: |
| 459 | while (--id >= 0) |
| 460 | regulator_unregister(rdev[id]); |
| 461 | return err; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | static int __devexit tps6586x_regulator_remove(struct platform_device *pdev) |
| 465 | { |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 466 | struct regulator_dev **rdev = platform_get_drvdata(pdev); |
| 467 | int id = TPS6586X_ID_MAX_REGULATOR; |
Axel Lin | e7973c3 | 2010-08-09 15:58:06 +0800 | [diff] [blame] | 468 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 469 | while (--id >= 0) |
| 470 | regulator_unregister(rdev[id]); |
| 471 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static struct platform_driver tps6586x_regulator_driver = { |
| 476 | .driver = { |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame^] | 477 | .name = "tps6586x-pmic", |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 478 | .owner = THIS_MODULE, |
| 479 | }, |
| 480 | .probe = tps6586x_regulator_probe, |
| 481 | .remove = __devexit_p(tps6586x_regulator_remove), |
| 482 | }; |
| 483 | |
| 484 | static int __init tps6586x_regulator_init(void) |
| 485 | { |
| 486 | return platform_driver_register(&tps6586x_regulator_driver); |
| 487 | } |
| 488 | subsys_initcall(tps6586x_regulator_init); |
| 489 | |
| 490 | static void __exit tps6586x_regulator_exit(void) |
| 491 | { |
| 492 | platform_driver_unregister(&tps6586x_regulator_driver); |
| 493 | } |
| 494 | module_exit(tps6586x_regulator_exit); |
| 495 | |
| 496 | MODULE_LICENSE("GPL"); |
| 497 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); |
| 498 | MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC"); |
| 499 | MODULE_ALIAS("platform:tps6586x-regulator"); |