1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Copyright (c) 2017 MediaTek Inc. 4 // Author: Chenglin Xu <chenglin.xu@mediatek.com> 5 6 #include <linux/module.h> 7 #include <linux/of.h> 8 #include <linux/platform_device.h> 9 #include <linux/regmap.h> 10 #include <linux/regulator/driver.h> 11 #include <linux/regulator/machine.h> 12 #include <linux/regulator/mt6380-regulator.h> 13 #include <linux/regulator/of_regulator.h> 14 15 /* PMIC Registers */ 16 #define MT6380_ALDO_CON_0 0x0000 17 #define MT6380_BTLDO_CON_0 0x0004 18 #define MT6380_COMP_CON_0 0x0008 19 #define MT6380_CPUBUCK_CON_0 0x000C 20 #define MT6380_CPUBUCK_CON_1 0x0010 21 #define MT6380_CPUBUCK_CON_2 0x0014 22 #define MT6380_DDRLDO_CON_0 0x0018 23 #define MT6380_MLDO_CON_0 0x001C 24 #define MT6380_PALDO_CON_0 0x0020 25 #define MT6380_PHYLDO_CON_0 0x0024 26 #define MT6380_SIDO_CON_0 0x0028 27 #define MT6380_SIDO_CON_1 0x002C 28 #define MT6380_SIDO_CON_2 0x0030 29 #define MT6380_SLDO_CON_0 0x0034 30 #define MT6380_TLDO_CON_0 0x0038 31 #define MT6380_STARTUP_CON_0 0x003C 32 #define MT6380_STARTUP_CON_1 0x0040 33 #define MT6380_SMPS_TOP_CON_0 0x0044 34 #define MT6380_SMPS_TOP_CON_1 0x0048 35 #define MT6380_ANA_CTRL_0 0x0050 36 #define MT6380_ANA_CTRL_1 0x0054 37 #define MT6380_ANA_CTRL_2 0x0058 38 #define MT6380_ANA_CTRL_3 0x005C 39 #define MT6380_ANA_CTRL_4 0x0060 40 #define MT6380_SPK_CON9 0x0064 41 #define MT6380_SPK_CON11 0x0068 42 #define MT6380_SPK_CON12 0x006A 43 #define MT6380_CLK_CTRL 0x0070 44 #define MT6380_PINMUX_CTRL 0x0074 45 #define MT6380_IO_CTRL 0x0078 46 #define MT6380_SLP_MODE_CTRL_0 0x007C 47 #define MT6380_SLP_MODE_CTRL_1 0x0080 48 #define MT6380_SLP_MODE_CTRL_2 0x0084 49 #define MT6380_SLP_MODE_CTRL_3 0x0088 50 #define MT6380_SLP_MODE_CTRL_4 0x008C 51 #define MT6380_SLP_MODE_CTRL_5 0x0090 52 #define MT6380_SLP_MODE_CTRL_6 0x0094 53 #define MT6380_SLP_MODE_CTRL_7 0x0098 54 #define MT6380_SLP_MODE_CTRL_8 0x009C 55 #define MT6380_FCAL_CTRL_0 0x00A0 56 #define MT6380_FCAL_CTRL_1 0x00A4 57 #define MT6380_LDO_CTRL_0 0x00A8 58 #define MT6380_LDO_CTRL_1 0x00AC 59 #define MT6380_LDO_CTRL_2 0x00B0 60 #define MT6380_LDO_CTRL_3 0x00B4 61 #define MT6380_LDO_CTRL_4 0x00B8 62 #define MT6380_DEBUG_CTRL_0 0x00BC 63 #define MT6380_EFU_CTRL_0 0x0200 64 #define MT6380_EFU_CTRL_1 0x0201 65 #define MT6380_EFU_CTRL_2 0x0202 66 #define MT6380_EFU_CTRL_3 0x0203 67 #define MT6380_EFU_CTRL_4 0x0204 68 #define MT6380_EFU_CTRL_5 0x0205 69 #define MT6380_EFU_CTRL_6 0x0206 70 #define MT6380_EFU_CTRL_7 0x0207 71 #define MT6380_EFU_CTRL_8 0x0208 72 73 #define MT6380_REGULATOR_MODE_AUTO 0 74 #define MT6380_REGULATOR_MODE_FORCE_PWM 1 75 76 /* 77 * mt6380 regulators' information 78 * 79 * @desc: standard fields of regulator description 80 * @vselon_reg: Register sections for hardware control mode of bucks 81 * @modeset_reg: Register for controlling the buck/LDO control mode 82 * @modeset_mask: Mask for controlling the buck/LDO control mode 83 */ 84 struct mt6380_regulator_info { 85 struct regulator_desc desc; 86 u32 vselon_reg; 87 u32 modeset_reg; 88 u32 modeset_mask; 89 }; 90 91 #define MT6380_BUCK(match, vreg, min, max, step, volt_ranges, enreg, \ 92 vosel, vosel_mask, enbit, voselon, _modeset_reg, \ 93 _modeset_mask) \ 94 [MT6380_ID_##vreg] = { \ 95 .desc = { \ 96 .name = #vreg, \ 97 .of_match = of_match_ptr(match), \ 98 .ops = &mt6380_volt_range_ops, \ 99 .type = REGULATOR_VOLTAGE, \ 100 .id = MT6380_ID_##vreg, \ 101 .owner = THIS_MODULE, \ 102 .n_voltages = ((max) - (min)) / (step) + 1, \ 103 .linear_ranges = volt_ranges, \ 104 .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ 105 .vsel_reg = vosel, \ 106 .vsel_mask = vosel_mask, \ 107 .enable_reg = enreg, \ 108 .enable_mask = BIT(enbit), \ 109 }, \ 110 .vselon_reg = voselon, \ 111 .modeset_reg = _modeset_reg, \ 112 .modeset_mask = _modeset_mask, \ 113 } 114 115 #define MT6380_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel, \ 116 vosel_mask, _modeset_reg, _modeset_mask) \ 117 [MT6380_ID_##vreg] = { \ 118 .desc = { \ 119 .name = #vreg, \ 120 .of_match = of_match_ptr(match), \ 121 .ops = &mt6380_volt_table_ops, \ 122 .type = REGULATOR_VOLTAGE, \ 123 .id = MT6380_ID_##vreg, \ 124 .owner = THIS_MODULE, \ 125 .n_voltages = ARRAY_SIZE(ldo_volt_table), \ 126 .volt_table = ldo_volt_table, \ 127 .vsel_reg = vosel, \ 128 .vsel_mask = vosel_mask, \ 129 .enable_reg = enreg, \ 130 .enable_mask = BIT(enbit), \ 131 }, \ 132 .modeset_reg = _modeset_reg, \ 133 .modeset_mask = _modeset_mask, \ 134 } 135 136 #define MT6380_REG_FIXED(match, vreg, enreg, enbit, volt, \ 137 _modeset_reg, _modeset_mask) \ 138 [MT6380_ID_##vreg] = { \ 139 .desc = { \ 140 .name = #vreg, \ 141 .of_match = of_match_ptr(match), \ 142 .ops = &mt6380_volt_fixed_ops, \ 143 .type = REGULATOR_VOLTAGE, \ 144 .id = MT6380_ID_##vreg, \ 145 .owner = THIS_MODULE, \ 146 .n_voltages = 1, \ 147 .enable_reg = enreg, \ 148 .enable_mask = BIT(enbit), \ 149 .min_uV = volt, \ 150 }, \ 151 .modeset_reg = _modeset_reg, \ 152 .modeset_mask = _modeset_mask, \ 153 } 154 155 static const struct linear_range buck_volt_range1[] = { 156 REGULATOR_LINEAR_RANGE(600000, 0, 0xfe, 6250), 157 }; 158 159 static const struct linear_range buck_volt_range2[] = { 160 REGULATOR_LINEAR_RANGE(600000, 0, 0xfe, 6250), 161 }; 162 163 static const struct linear_range buck_volt_range3[] = { 164 REGULATOR_LINEAR_RANGE(1200000, 0, 0x3c, 25000), 165 }; 166 167 static const unsigned int ldo_volt_table1[] = { 168 1400000, 1350000, 1300000, 1250000, 1200000, 1150000, 1100000, 1050000, 169 }; 170 171 static const unsigned int ldo_volt_table2[] = { 172 2200000, 3300000, 173 }; 174 175 static const unsigned int ldo_volt_table3[] = { 176 1240000, 1390000, 1540000, 1840000, 177 }; 178 179 static const unsigned int ldo_volt_table4[] = { 180 2200000, 3300000, 181 }; 182 183 static int mt6380_regulator_set_mode(struct regulator_dev *rdev, 184 unsigned int mode) 185 { 186 int val = 0; 187 struct mt6380_regulator_info *info = rdev_get_drvdata(rdev); 188 189 switch (mode) { 190 case REGULATOR_MODE_NORMAL: 191 val = MT6380_REGULATOR_MODE_AUTO; 192 break; 193 case REGULATOR_MODE_FAST: 194 val = MT6380_REGULATOR_MODE_FORCE_PWM; 195 break; 196 default: 197 return -EINVAL; 198 } 199 200 val <<= ffs(info->modeset_mask) - 1; 201 202 return regmap_update_bits(rdev->regmap, info->modeset_reg, 203 info->modeset_mask, val); 204 } 205 206 static unsigned int mt6380_regulator_get_mode(struct regulator_dev *rdev) 207 { 208 unsigned int val; 209 unsigned int mode; 210 int ret; 211 struct mt6380_regulator_info *info = rdev_get_drvdata(rdev); 212 213 ret = regmap_read(rdev->regmap, info->modeset_reg, &val); 214 if (ret < 0) 215 return ret; 216 217 val &= info->modeset_mask; 218 val >>= ffs(info->modeset_mask) - 1; 219 220 switch (val) { 221 case MT6380_REGULATOR_MODE_AUTO: 222 mode = REGULATOR_MODE_NORMAL; 223 break; 224 case MT6380_REGULATOR_MODE_FORCE_PWM: 225 mode = REGULATOR_MODE_FAST; 226 break; 227 default: 228 return -EINVAL; 229 } 230 231 return mode; 232 } 233 234 static const struct regulator_ops mt6380_volt_range_ops = { 235 .list_voltage = regulator_list_voltage_linear_range, 236 .map_voltage = regulator_map_voltage_linear_range, 237 .set_voltage_sel = regulator_set_voltage_sel_regmap, 238 .get_voltage_sel = regulator_get_voltage_sel_regmap, 239 .set_voltage_time_sel = regulator_set_voltage_time_sel, 240 .enable = regulator_enable_regmap, 241 .disable = regulator_disable_regmap, 242 .is_enabled = regulator_is_enabled_regmap, 243 .set_mode = mt6380_regulator_set_mode, 244 .get_mode = mt6380_regulator_get_mode, 245 }; 246 247 static const struct regulator_ops mt6380_volt_table_ops = { 248 .list_voltage = regulator_list_voltage_table, 249 .map_voltage = regulator_map_voltage_iterate, 250 .set_voltage_sel = regulator_set_voltage_sel_regmap, 251 .get_voltage_sel = regulator_get_voltage_sel_regmap, 252 .set_voltage_time_sel = regulator_set_voltage_time_sel, 253 .enable = regulator_enable_regmap, 254 .disable = regulator_disable_regmap, 255 .is_enabled = regulator_is_enabled_regmap, 256 .set_mode = mt6380_regulator_set_mode, 257 .get_mode = mt6380_regulator_get_mode, 258 }; 259 260 static const struct regulator_ops mt6380_volt_fixed_ops = { 261 .list_voltage = regulator_list_voltage_linear, 262 .enable = regulator_enable_regmap, 263 .disable = regulator_disable_regmap, 264 .is_enabled = regulator_is_enabled_regmap, 265 .set_mode = mt6380_regulator_set_mode, 266 .get_mode = mt6380_regulator_get_mode, 267 }; 268 269 /* The array is indexed by id(MT6380_ID_XXX) */ 270 static struct mt6380_regulator_info mt6380_regulators[] = { 271 MT6380_BUCK("buck-vcore1", VCPU, 600000, 1393750, 6250, 272 buck_volt_range1, MT6380_ANA_CTRL_3, MT6380_ANA_CTRL_1, 273 0xfe, 3, MT6380_ANA_CTRL_1, 274 MT6380_CPUBUCK_CON_0, 0x8000000), 275 MT6380_BUCK("buck-vcore", VCORE, 600000, 1393750, 6250, 276 buck_volt_range2, MT6380_ANA_CTRL_3, MT6380_ANA_CTRL_2, 277 0xfe, 2, MT6380_ANA_CTRL_2, MT6380_SIDO_CON_0, 0x1000000), 278 MT6380_BUCK("buck-vrf", VRF, 1200000, 1575000, 25000, 279 buck_volt_range3, MT6380_ANA_CTRL_3, MT6380_SIDO_CON_0, 280 0x78, 1, MT6380_SIDO_CON_0, MT6380_SIDO_CON_0, 0x8000), 281 MT6380_LDO("ldo-vm", VMLDO, ldo_volt_table1, MT6380_LDO_CTRL_0, 282 1, MT6380_MLDO_CON_0, 0xE000, MT6380_ANA_CTRL_1, 0x4000000), 283 MT6380_LDO("ldo-va", VALDO, ldo_volt_table2, MT6380_LDO_CTRL_0, 284 2, MT6380_ALDO_CON_0, 0x400, MT6380_ALDO_CON_0, 0x20), 285 MT6380_REG_FIXED("ldo-vphy", VPHYLDO, MT6380_LDO_CTRL_0, 7, 1800000, 286 MT6380_PHYLDO_CON_0, 0x80), 287 MT6380_LDO("ldo-vddr", VDDRLDO, ldo_volt_table3, MT6380_LDO_CTRL_0, 288 8, MT6380_DDRLDO_CON_0, 0x3000, MT6380_DDRLDO_CON_0, 0x80), 289 MT6380_LDO("ldo-vt", VTLDO, ldo_volt_table4, MT6380_LDO_CTRL_0, 3, 290 MT6380_TLDO_CON_0, 0x400, MT6380_TLDO_CON_0, 0x20), 291 }; 292 293 static int mt6380_regulator_probe(struct platform_device *pdev) 294 { 295 struct regmap *regmap = dev_get_regmap(pdev->dev.parent, NULL); 296 struct regulator_config config = {}; 297 struct regulator_dev *rdev; 298 int i; 299 300 for (i = 0; i < MT6380_MAX_REGULATOR; i++) { 301 config.dev = &pdev->dev; 302 config.driver_data = &mt6380_regulators[i]; 303 config.regmap = regmap; 304 rdev = devm_regulator_register(&pdev->dev, 305 &mt6380_regulators[i].desc, 306 &config); 307 if (IS_ERR(rdev)) { 308 dev_err(&pdev->dev, "failed to register %s\n", 309 mt6380_regulators[i].desc.name); 310 return PTR_ERR(rdev); 311 } 312 } 313 return 0; 314 } 315 316 static const struct platform_device_id mt6380_platform_ids[] = { 317 {"mt6380-regulator", 0}, 318 { /* sentinel */ }, 319 }; 320 MODULE_DEVICE_TABLE(platform, mt6380_platform_ids); 321 322 static const struct of_device_id mt6380_of_match[] = { 323 { .compatible = "mediatek,mt6380-regulator", }, 324 { /* sentinel */ }, 325 }; 326 MODULE_DEVICE_TABLE(of, mt6380_of_match); 327 328 static struct platform_driver mt6380_regulator_driver = { 329 .driver = { 330 .name = "mt6380-regulator", 331 .of_match_table = of_match_ptr(mt6380_of_match), 332 }, 333 .probe = mt6380_regulator_probe, 334 .id_table = mt6380_platform_ids, 335 }; 336 337 module_platform_driver(mt6380_regulator_driver); 338 339 MODULE_AUTHOR("Chenglin Xu <chenglin.xu@mediatek.com>"); 340 MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6380 PMIC"); 341 MODULE_LICENSE("GPL v2"); 342