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 | |
Alban Bedel | ad0b40fe | 2014-05-20 12:14:02 +0200 | [diff] [blame] | 66 | static struct regulator_ops tps6586x_rw_regulator_ops = { |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 67 | .list_voltage = regulator_list_voltage_table, |
Axel Lin | 4d673bb | 2013-04-20 11:35:13 +0800 | [diff] [blame] | 68 | .map_voltage = regulator_map_voltage_ascend, |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 69 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 70 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 71 | |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 72 | .is_enabled = regulator_is_enabled_regmap, |
| 73 | .enable = regulator_enable_regmap, |
| 74 | .disable = regulator_disable_regmap, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 75 | }; |
| 76 | |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 77 | static struct regulator_ops tps6586x_rw_linear_regulator_ops = { |
| 78 | .list_voltage = regulator_list_voltage_linear, |
| 79 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 80 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 81 | |
| 82 | .is_enabled = regulator_is_enabled_regmap, |
| 83 | .enable = regulator_enable_regmap, |
| 84 | .disable = regulator_disable_regmap, |
| 85 | }; |
| 86 | |
Alban Bedel | ad0b40fe | 2014-05-20 12:14:02 +0200 | [diff] [blame] | 87 | static struct regulator_ops tps6586x_ro_regulator_ops = { |
| 88 | .list_voltage = regulator_list_voltage_table, |
| 89 | .map_voltage = regulator_map_voltage_ascend, |
| 90 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 91 | |
| 92 | .is_enabled = regulator_is_enabled_regmap, |
| 93 | .enable = regulator_enable_regmap, |
| 94 | .disable = regulator_disable_regmap, |
| 95 | }; |
| 96 | |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 97 | static struct regulator_ops tps6586x_sys_regulator_ops = { |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 98 | }; |
| 99 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 100 | static const unsigned int tps6586x_ldo0_voltages[] = { |
| 101 | 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 102 | }; |
| 103 | |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 104 | static const unsigned int tps6586x_ldo_voltages[] = { |
| 105 | 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
Gary King | 4cc2e39 | 2010-07-30 22:58:58 +0300 | [diff] [blame] | 106 | }; |
| 107 | |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 108 | static const unsigned int tps658640_rtc_voltages[] = { |
Alban Bedel | 6c46ccc | 2014-05-20 12:14:03 +0200 | [diff] [blame] | 109 | 2500000, 2850000, 3100000, 3300000, |
| 110 | }; |
| 111 | |
Alban Bedel | ad0b40fe | 2014-05-20 12:14:02 +0200 | [diff] [blame] | 112 | #define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 113 | ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 114 | .desc = { \ |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 115 | .supply_name = _pin_name, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 116 | .name = "REG-" #_id, \ |
Alban Bedel | ad0b40fe | 2014-05-20 12:14:02 +0200 | [diff] [blame] | 117 | .ops = &tps6586x_## _ops ## _regulator_ops, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 118 | .type = REGULATOR_VOLTAGE, \ |
| 119 | .id = TPS6586X_ID_##_id, \ |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 120 | .n_voltages = ARRAY_SIZE(vdata##_voltages), \ |
| 121 | .volt_table = vdata##_voltages, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 122 | .owner = THIS_MODULE, \ |
Axel Lin | 7c7475c | 2012-07-25 08:51:44 +0800 | [diff] [blame] | 123 | .enable_reg = TPS6586X_SUPPLY##ereg0, \ |
| 124 | .enable_mask = 1 << (ebit0), \ |
| 125 | .vsel_reg = TPS6586X_##vreg, \ |
| 126 | .vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 127 | .apply_reg = (goreg), \ |
| 128 | .apply_bit = (gobit), \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 129 | }, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 130 | .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
| 131 | .enable_bit[0] = (ebit0), \ |
| 132 | .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
Axel Lin | f464703 | 2012-06-05 22:52:06 +0800 | [diff] [blame] | 133 | .enable_bit[1] = (ebit1), |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 134 | |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 135 | #define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \ |
| 136 | uv_step, vreg, shift, nbits, ereg0, \ |
| 137 | ebit0, ereg1, ebit1, goreg, gobit) \ |
| 138 | .desc = { \ |
| 139 | .supply_name = _pin_name, \ |
| 140 | .name = "REG-" #_id, \ |
| 141 | .ops = &tps6586x_## _ops ## _regulator_ops, \ |
| 142 | .type = REGULATOR_VOLTAGE, \ |
| 143 | .id = TPS6586X_ID_##_id, \ |
| 144 | .n_voltages = n_volt, \ |
| 145 | .min_uV = min_uv, \ |
| 146 | .uV_step = uv_step, \ |
| 147 | .owner = THIS_MODULE, \ |
| 148 | .enable_reg = TPS6586X_SUPPLY##ereg0, \ |
| 149 | .enable_mask = 1 << (ebit0), \ |
| 150 | .vsel_reg = TPS6586X_##vreg, \ |
| 151 | .vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
| 152 | .apply_reg = (goreg), \ |
| 153 | .apply_bit = (gobit), \ |
| 154 | }, \ |
| 155 | .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
| 156 | .enable_bit[0] = (ebit0), \ |
| 157 | .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
| 158 | .enable_bit[1] = (ebit1), |
| 159 | |
Laxman Dewangan | 7c7fac3 | 2012-07-13 19:20:32 +0530 | [diff] [blame] | 160 | #define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 161 | ereg0, ebit0, ereg1, ebit1) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 162 | { \ |
Alban Bedel | ad0b40fe | 2014-05-20 12:14:02 +0200 | [diff] [blame] | 163 | TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \ |
| 164 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
| 165 | } |
| 166 | |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 167 | #define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \ |
| 168 | shift, nbits, ereg0, ebit0, ereg1, ebit1) \ |
| 169 | { \ |
| 170 | TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \ |
| 171 | min_uv, uv_step, vreg, shift, nbits, \ |
| 172 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
| 173 | } |
| 174 | |
Alban Bedel | ad0b40fe | 2014-05-20 12:14:02 +0200 | [diff] [blame] | 175 | #define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
| 176 | ereg0, ebit0, ereg1, ebit1) \ |
| 177 | { \ |
| 178 | TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \ |
Axel Lin | d645d59 | 2012-12-18 09:34:13 +0800 | [diff] [blame] | 179 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 180 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 181 | |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 182 | #define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \ |
| 183 | nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 184 | { \ |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 185 | TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \ |
| 186 | min_uv, uv_step, vreg, shift, nbits, \ |
| 187 | ereg0, ebit0, ereg1, ebit1, goreg, \ |
| 188 | gobit) \ |
Danny Huang | 64db657 | 2010-12-01 13:37:29 -0700 | [diff] [blame] | 189 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 190 | |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 191 | #define TPS6586X_SYS_REGULATOR() \ |
| 192 | { \ |
| 193 | .desc = { \ |
| 194 | .supply_name = "sys", \ |
| 195 | .name = "REG-SYS", \ |
| 196 | .ops = &tps6586x_sys_regulator_ops, \ |
| 197 | .type = REGULATOR_VOLTAGE, \ |
| 198 | .id = TPS6586X_ID_SYS, \ |
| 199 | .owner = THIS_MODULE, \ |
| 200 | }, \ |
| 201 | } |
| 202 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 203 | static struct tps6586x_regulator tps6586x_regulator[] = { |
Laxman Dewangan | 9394b80 | 2012-09-04 14:43:39 -0600 | [diff] [blame] | 204 | TPS6586X_SYS_REGULATOR(), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 205 | TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0, |
| 206 | END, 0), |
| 207 | TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2, |
| 208 | END, 2), |
| 209 | TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6, |
| 210 | ENE, 6), |
| 211 | TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4, |
| 212 | END, 4), |
| 213 | TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5, |
| 214 | END, 5), |
| 215 | TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6, |
| 216 | END, 6), |
| 217 | TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7, |
| 218 | ENE, 7), |
| 219 | TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7, |
| 220 | V4, 7), |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 221 | TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1, |
| 222 | 0, 5, ENC, 1, END, 1), |
| 223 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2, |
| 224 | 0, 5, ENC, 7, END, 7), |
| 225 | TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5, |
| 226 | ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)), |
| 227 | TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5, |
| 228 | ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)), |
| 229 | TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5, |
| 230 | ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)), |
| 231 | TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5, |
| 232 | ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)), |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 233 | }; |
| 234 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 235 | static struct tps6586x_regulator tps658623_regulator[] = { |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 236 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2, |
| 237 | 0, 5, ENC, 7, END, 7), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 238 | }; |
| 239 | |
Alban Bedel | 6c46ccc | 2014-05-20 12:14:03 +0200 | [diff] [blame] | 240 | static struct tps6586x_regulator tps658640_regulator[] = { |
| 241 | TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3, |
| 242 | ENC, 2, END, 2), |
| 243 | TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3, |
| 244 | ENE, 6, ENE, 6), |
| 245 | TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3, |
| 246 | ENC, 4, END, 4), |
| 247 | TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3, |
| 248 | ENC, 5, END, 5), |
| 249 | TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3, |
| 250 | ENC, 6, END, 6), |
| 251 | TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3, |
| 252 | ENE, 7, ENE, 7), |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 253 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2, |
| 254 | 0, 5, ENC, 7, END, 7), |
Alban Bedel | 6c46ccc | 2014-05-20 12:14:03 +0200 | [diff] [blame] | 255 | |
| 256 | TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2, |
| 257 | V4, 7, V4, 7), |
| 258 | }; |
| 259 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 260 | static struct tps6586x_regulator tps658643_regulator[] = { |
Axel Lin | 2628b10 | 2014-06-04 20:44:03 +0800 | [diff] [blame] | 261 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2, |
| 262 | 0, 5, ENC, 7, END, 7), |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 263 | }; |
| 264 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 265 | /* |
| 266 | * TPS6586X has 2 enable bits that are OR'ed to determine the actual |
| 267 | * regulator state. Clearing one of this bits allows switching |
| 268 | * regulator on and of with single register write. |
| 269 | */ |
| 270 | static inline int tps6586x_regulator_preinit(struct device *parent, |
| 271 | struct tps6586x_regulator *ri) |
| 272 | { |
| 273 | uint8_t val1, val2; |
| 274 | int ret; |
| 275 | |
Danny Huang | 1dbcf35 | 2010-12-01 13:37:30 -0700 | [diff] [blame] | 276 | if (ri->enable_reg[0] == ri->enable_reg[1] && |
| 277 | ri->enable_bit[0] == ri->enable_bit[1]) |
| 278 | return 0; |
| 279 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 280 | ret = tps6586x_read(parent, ri->enable_reg[0], &val1); |
| 281 | if (ret) |
| 282 | return ret; |
| 283 | |
| 284 | ret = tps6586x_read(parent, ri->enable_reg[1], &val2); |
| 285 | if (ret) |
| 286 | return ret; |
| 287 | |
Danny Huang | 4f586707 | 2010-12-01 13:37:28 -0700 | [diff] [blame] | 288 | if (!(val2 & (1 << ri->enable_bit[1]))) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 289 | return 0; |
| 290 | |
| 291 | /* |
| 292 | * The regulator is on, but it's enabled with the bit we don't |
| 293 | * want to use, so we switch the enable bits |
| 294 | */ |
Danny Huang | 4f586707 | 2010-12-01 13:37:28 -0700 | [diff] [blame] | 295 | if (!(val1 & (1 << ri->enable_bit[0]))) { |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 296 | ret = tps6586x_set_bits(parent, ri->enable_reg[0], |
| 297 | 1 << ri->enable_bit[0]); |
| 298 | if (ret) |
| 299 | return ret; |
| 300 | } |
| 301 | |
| 302 | return tps6586x_clr_bits(parent, ri->enable_reg[1], |
| 303 | 1 << ri->enable_bit[1]); |
| 304 | } |
| 305 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 306 | static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev, |
| 307 | int id, struct regulator_init_data *p) |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 308 | { |
| 309 | struct device *parent = pdev->dev.parent; |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 310 | struct tps6586x_settings *setting = p->driver_data; |
| 311 | uint8_t reg; |
| 312 | |
| 313 | if (setting == NULL) |
| 314 | return 0; |
| 315 | |
| 316 | if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET)) |
| 317 | return 0; |
| 318 | |
| 319 | /* only SM0 and SM1 can have the slew rate settings */ |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 320 | switch (id) { |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 321 | case TPS6586X_ID_SM_0: |
| 322 | reg = TPS6586X_SM0SL; |
| 323 | break; |
| 324 | case TPS6586X_ID_SM_1: |
| 325 | reg = TPS6586X_SM1SL; |
| 326 | break; |
| 327 | default: |
Axel Lin | 6673d66 | 2013-02-20 10:23:46 +0800 | [diff] [blame] | 328 | dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n"); |
Xin Xie | 500c524 | 2011-08-09 18:47:50 +0800 | [diff] [blame] | 329 | return -EINVAL; |
| 330 | } |
| 331 | |
| 332 | return tps6586x_write(parent, reg, |
| 333 | setting->slew_rate & TPS6586X_SLEW_RATE_MASK); |
| 334 | } |
| 335 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 336 | static struct tps6586x_regulator *find_regulator_info(int id, int version) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 337 | { |
| 338 | struct tps6586x_regulator *ri; |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 339 | struct tps6586x_regulator *table = NULL; |
| 340 | int num; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 341 | int i; |
| 342 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 343 | switch (version) { |
| 344 | case TPS658623: |
| 345 | table = tps658623_regulator; |
| 346 | num = ARRAY_SIZE(tps658623_regulator); |
| 347 | break; |
Alban Bedel | 6c46ccc | 2014-05-20 12:14:03 +0200 | [diff] [blame] | 348 | case TPS658640: |
| 349 | case TPS658640v2: |
| 350 | table = tps658640_regulator; |
| 351 | num = ARRAY_SIZE(tps658640_regulator); |
| 352 | break; |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 353 | case TPS658643: |
| 354 | table = tps658643_regulator; |
| 355 | num = ARRAY_SIZE(tps658643_regulator); |
| 356 | break; |
| 357 | } |
| 358 | |
| 359 | /* Search version specific table first */ |
| 360 | if (table) { |
| 361 | for (i = 0; i < num; i++) { |
| 362 | ri = &table[i]; |
| 363 | if (ri->desc.id == id) |
| 364 | return ri; |
| 365 | } |
| 366 | } |
| 367 | |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 368 | for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) { |
| 369 | ri = &tps6586x_regulator[i]; |
| 370 | if (ri->desc.id == id) |
| 371 | return ri; |
| 372 | } |
| 373 | return NULL; |
| 374 | } |
| 375 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 376 | #ifdef CONFIG_OF |
| 377 | static struct of_regulator_match tps6586x_matches[] = { |
| 378 | { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS }, |
| 379 | { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 }, |
| 380 | { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 }, |
| 381 | { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 }, |
| 382 | { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 }, |
| 383 | { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 }, |
| 384 | { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 }, |
| 385 | { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 }, |
| 386 | { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 }, |
| 387 | { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 }, |
| 388 | { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 }, |
| 389 | { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 }, |
| 390 | { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 }, |
| 391 | { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 }, |
| 392 | { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC }, |
| 393 | }; |
| 394 | |
| 395 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
| 396 | struct platform_device *pdev, |
| 397 | struct of_regulator_match **tps6586x_reg_matches) |
| 398 | { |
| 399 | const unsigned int num = ARRAY_SIZE(tps6586x_matches); |
| 400 | struct device_node *np = pdev->dev.parent->of_node; |
| 401 | struct device_node *regs; |
| 402 | const char *sys_rail = NULL; |
| 403 | unsigned int i; |
| 404 | struct tps6586x_platform_data *pdata; |
| 405 | int err; |
| 406 | |
Laxman Dewangan | 712c967 | 2013-10-08 19:31:03 +0530 | [diff] [blame] | 407 | regs = of_get_child_by_name(np, "regulators"); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 408 | if (!regs) { |
| 409 | dev_err(&pdev->dev, "regulator node not found\n"); |
| 410 | return NULL; |
| 411 | } |
| 412 | |
| 413 | err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num); |
Guennadi Liakhovetski | 0a4ccca | 2013-02-25 12:34:09 +0100 | [diff] [blame] | 414 | of_node_put(regs); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 415 | if (err < 0) { |
| 416 | dev_err(&pdev->dev, "Regulator match failed, e %d\n", err); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 417 | return NULL; |
| 418 | } |
| 419 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 420 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
Sachin Kamat | 02e9058 | 2014-02-20 14:23:17 +0530 | [diff] [blame] | 421 | if (!pdata) |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 422 | return NULL; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 423 | |
| 424 | for (i = 0; i < num; i++) { |
Daniel Kurtz | a70f0d0 | 2015-07-22 18:23:26 +0800 | [diff] [blame^] | 425 | uintptr_t id; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 426 | if (!tps6586x_matches[i].init_data) |
| 427 | continue; |
| 428 | |
| 429 | pdata->reg_init_data[i] = tps6586x_matches[i].init_data; |
Daniel Kurtz | a70f0d0 | 2015-07-22 18:23:26 +0800 | [diff] [blame^] | 430 | id = (uintptr_t)tps6586x_matches[i].driver_data; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 431 | if (id == TPS6586X_ID_SYS) |
| 432 | sys_rail = pdata->reg_init_data[i]->constraints.name; |
| 433 | |
| 434 | if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC)) |
| 435 | pdata->reg_init_data[i]->supply_regulator = sys_rail; |
| 436 | } |
| 437 | *tps6586x_reg_matches = tps6586x_matches; |
| 438 | return pdata; |
| 439 | } |
| 440 | #else |
| 441 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
| 442 | struct platform_device *pdev, |
| 443 | struct of_regulator_match **tps6586x_reg_matches) |
| 444 | { |
| 445 | *tps6586x_reg_matches = NULL; |
| 446 | return NULL; |
| 447 | } |
| 448 | #endif |
| 449 | |
Bill Pemberton | a502357 | 2012-11-19 13:22:22 -0500 | [diff] [blame] | 450 | static int tps6586x_regulator_probe(struct platform_device *pdev) |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 451 | { |
| 452 | struct tps6586x_regulator *ri = NULL; |
Mark Brown | c172708 | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 453 | struct regulator_config config = { }; |
Axel Lin | d6fe2c7 | 2014-03-08 21:15:59 +0800 | [diff] [blame] | 454 | struct regulator_dev *rdev; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 455 | struct regulator_init_data *reg_data; |
| 456 | struct tps6586x_platform_data *pdata; |
| 457 | struct of_regulator_match *tps6586x_reg_matches = NULL; |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 458 | int version; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 459 | int id; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 460 | int err; |
| 461 | |
Laxman Dewangan | 1083560 | 2012-11-27 04:44:28 +0530 | [diff] [blame] | 462 | dev_dbg(&pdev->dev, "Probing regulator\n"); |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 463 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 464 | pdata = dev_get_platdata(pdev->dev.parent); |
| 465 | if ((!pdata) && (pdev->dev.parent->of_node)) |
| 466 | pdata = tps6586x_parse_regulator_dt(pdev, |
| 467 | &tps6586x_reg_matches); |
| 468 | |
| 469 | if (!pdata) { |
| 470 | dev_err(&pdev->dev, "Platform data not available, exiting\n"); |
| 471 | return -ENODEV; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 472 | } |
| 473 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 474 | version = tps6586x_get_version(pdev->dev.parent); |
| 475 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 476 | for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) { |
| 477 | reg_data = pdata->reg_init_data[id]; |
Mark Brown | c172708 | 2012-04-04 00:50:22 +0100 | [diff] [blame] | 478 | |
Stefan Agner | 844a4f0 | 2013-12-06 13:51:46 +0100 | [diff] [blame] | 479 | ri = find_regulator_info(id, version); |
| 480 | |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 481 | if (!ri) { |
| 482 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); |
Sachin Kamat | 884ea55 | 2013-09-04 17:17:50 +0530 | [diff] [blame] | 483 | return -EINVAL; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | err = tps6586x_regulator_preinit(pdev->dev.parent, ri); |
| 487 | if (err) { |
| 488 | dev_err(&pdev->dev, |
| 489 | "regulator %d preinit failed, e %d\n", id, err); |
Sachin Kamat | 884ea55 | 2013-09-04 17:17:50 +0530 | [diff] [blame] | 490 | return err; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | config.dev = pdev->dev.parent; |
| 494 | config.init_data = reg_data; |
| 495 | config.driver_data = ri; |
| 496 | |
| 497 | if (tps6586x_reg_matches) |
| 498 | config.of_node = tps6586x_reg_matches[id].of_node; |
| 499 | |
Axel Lin | d6fe2c7 | 2014-03-08 21:15:59 +0800 | [diff] [blame] | 500 | rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config); |
| 501 | if (IS_ERR(rdev)) { |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 502 | dev_err(&pdev->dev, "failed to register regulator %s\n", |
| 503 | ri->desc.name); |
Axel Lin | d6fe2c7 | 2014-03-08 21:15:59 +0800 | [diff] [blame] | 504 | return PTR_ERR(rdev); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | if (reg_data) { |
| 508 | err = tps6586x_regulator_set_slew_rate(pdev, id, |
| 509 | reg_data); |
| 510 | if (err < 0) { |
| 511 | dev_err(&pdev->dev, |
| 512 | "Slew rate config failed, e %d\n", err); |
Sachin Kamat | 884ea55 | 2013-09-04 17:17:50 +0530 | [diff] [blame] | 513 | return err; |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 514 | } |
| 515 | } |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 516 | } |
| 517 | |
Axel Lin | e7973c3 | 2010-08-09 15:58:06 +0800 | [diff] [blame] | 518 | platform_set_drvdata(pdev, rdev); |
Laxman Dewangan | 64e4816 | 2012-10-18 19:36:09 +0530 | [diff] [blame] | 519 | return 0; |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | static struct platform_driver tps6586x_regulator_driver = { |
| 523 | .driver = { |
Marc Dietrich | ec8da80 | 2013-06-10 22:27:55 +0200 | [diff] [blame] | 524 | .name = "tps6586x-regulator", |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 525 | }, |
| 526 | .probe = tps6586x_regulator_probe, |
Mike Rapoport | 4961023 | 2010-07-27 14:03:01 +0300 | [diff] [blame] | 527 | }; |
| 528 | |
| 529 | static int __init tps6586x_regulator_init(void) |
| 530 | { |
| 531 | return platform_driver_register(&tps6586x_regulator_driver); |
| 532 | } |
| 533 | subsys_initcall(tps6586x_regulator_init); |
| 534 | |
| 535 | static void __exit tps6586x_regulator_exit(void) |
| 536 | { |
| 537 | platform_driver_unregister(&tps6586x_regulator_driver); |
| 538 | } |
| 539 | module_exit(tps6586x_regulator_exit); |
| 540 | |
| 541 | MODULE_LICENSE("GPL"); |
| 542 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); |
| 543 | MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC"); |
| 544 | MODULE_ALIAS("platform:tps6586x-regulator"); |