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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2016 * Texas Instruments Incorporated, <www.ti.com> * * Keerthy <j-keerthy@ti.com> */ #include <fdtdec.h> #include <errno.h> #include <dm.h> #include <power/pmic.h> #include <power/regulator.h> #include <power/lp873x.h> static const char lp873x_buck_ctrl[LP873X_BUCK_NUM] = {0x2, 0x4}; static const char lp873x_buck_volt[LP873X_BUCK_NUM] = {0x6, 0x7}; static const char lp873x_ldo_ctrl[LP873X_LDO_NUM] = {0x8, 0x9}; static const char lp873x_ldo_volt[LP873X_LDO_NUM] = {0xA, 0xB}; static int lp873x_buck_enable(struct udevice *dev, int op, bool *enable) { int ret; unsigned int adr; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->ctrl_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= LP873X_BUCK_MODE_MASK; if (ret) *enable = true; else *enable = false; return 0; } else if (op == PMIC_OP_SET) { if (*enable) ret |= LP873X_BUCK_MODE_MASK; else ret &= ~(LP873X_BUCK_MODE_MASK); ret = pmic_reg_write(dev->parent, adr, ret); if (ret) return ret; } return 0; } static int lp873x_buck_volt2hex(int uV) { if (uV > LP873X_BUCK_VOLT_MAX) return -EINVAL; else if (uV > 1400000) return (uV - 1420000) / 20000 + 0x9E; else if (uV > 730000) return (uV - 735000) / 5000 + 0x18; else if (uV >= 700000) return (uV - 700000) / 10000 + 0x1; else return -EINVAL; } static int lp873x_buck_hex2volt(int hex) { if (hex > LP873X_BUCK_VOLT_MAX_HEX) return -EINVAL; else if (hex > 0x9D) return 1400000 + (hex - 0x9D) * 20000; else if (hex > 0x17) return 730000 + (hex - 0x17) * 5000; else if (hex >= 0x14) return 700000 + (hex - 0x14) * 10000; else return -EINVAL; } static int lp873x_buck_val(struct udevice *dev, int op, int *uV) { unsigned int adr; int hex, ret; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); if (op == PMIC_OP_GET) *uV = 0; adr = uc_pdata->volt_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= LP873X_BUCK_VOLT_MASK; ret = lp873x_buck_hex2volt(ret); if (ret < 0) return ret; *uV = ret; return 0; } hex = lp873x_buck_volt2hex(*uV); if (hex < 0) return hex; ret &= 0x0; ret |= hex; ret = pmic_reg_write(dev->parent, adr, ret); return ret; } static int lp873x_ldo_enable(struct udevice *dev, int op, bool *enable) { int ret; unsigned int adr; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->ctrl_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= LP873X_LDO_MODE_MASK; if (ret) *enable = true; else *enable = false; return 0; } else if (op == PMIC_OP_SET) { if (*enable) ret |= LP873X_LDO_MODE_MASK; else ret &= ~(LP873X_LDO_MODE_MASK); ret = pmic_reg_write(dev->parent, adr, ret); if (ret) return ret; } return 0; } static int lp873x_ldo_volt2hex(int uV) { if (uV > LP873X_LDO_VOLT_MAX) return -EINVAL; return (uV - 800000) / 100000; } static int lp873x_ldo_hex2volt(int hex) { if (hex > LP873X_LDO_VOLT_MAX_HEX) return -EINVAL; if (!hex) return 0; return (hex * 100000) + 800000; } static int lp873x_ldo_val(struct udevice *dev, int op, int *uV) { unsigned int adr; int hex, ret; struct dm_regulator_uclass_plat *uc_pdata; if (op == PMIC_OP_GET) *uV = 0; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->volt_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= LP873X_LDO_VOLT_MASK; ret = lp873x_ldo_hex2volt(ret); if (ret < 0) return ret; *uV = ret; return 0; } hex = lp873x_ldo_volt2hex(*uV); if (hex < 0) return hex; ret &= ~LP873X_LDO_VOLT_MASK; ret |= hex; if (*uV > 1650000) ret |= 0x80; ret = pmic_reg_write(dev->parent, adr, ret); return ret; } static int lp873x_ldo_probe(struct udevice *dev) { struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); uc_pdata->type = REGULATOR_TYPE_LDO; int idx = dev->driver_data; if (idx >= LP873X_LDO_NUM) { printf("Wrong ID for regulator\n"); return -1; } uc_pdata->ctrl_reg = lp873x_ldo_ctrl[idx]; uc_pdata->volt_reg = lp873x_ldo_volt[idx]; return 0; } static int ldo_get_value(struct udevice *dev) { int uV; int ret; ret = lp873x_ldo_val(dev, PMIC_OP_GET, &uV); if (ret) return ret; return uV; } static int ldo_set_value(struct udevice *dev, int uV) { return lp873x_ldo_val(dev, PMIC_OP_SET, &uV); } static int ldo_get_enable(struct udevice *dev) { bool enable = false; int ret; ret = lp873x_ldo_enable(dev, PMIC_OP_GET, &enable); if (ret) return ret; return enable; } static int ldo_set_enable(struct udevice *dev, bool enable) { return lp873x_ldo_enable(dev, PMIC_OP_SET, &enable); } static int lp873x_buck_probe(struct udevice *dev) { struct dm_regulator_uclass_plat *uc_pdata; int idx; uc_pdata = dev_get_uclass_plat(dev); uc_pdata->type = REGULATOR_TYPE_BUCK; idx = dev->driver_data; if (idx >= LP873X_BUCK_NUM) { printf("Wrong ID for regulator\n"); return -1; } uc_pdata->ctrl_reg = lp873x_buck_ctrl[idx]; uc_pdata->volt_reg = lp873x_buck_volt[idx]; return 0; } static int buck_get_value(struct udevice *dev) { int uV; int ret; ret = lp873x_buck_val(dev, PMIC_OP_GET, &uV); if (ret) return ret; return uV; } static int buck_set_value(struct udevice *dev, int uV) { return lp873x_buck_val(dev, PMIC_OP_SET, &uV); } static int buck_get_enable(struct udevice *dev) { bool enable = false; int ret; ret = lp873x_buck_enable(dev, PMIC_OP_GET, &enable); if (ret) return ret; return enable; } static int buck_set_enable(struct udevice *dev, bool enable) { return lp873x_buck_enable(dev, PMIC_OP_SET, &enable); } static const struct dm_regulator_ops lp873x_ldo_ops = { .get_value = ldo_get_value, .set_value = ldo_set_value, .get_enable = ldo_get_enable, .set_enable = ldo_set_enable, }; U_BOOT_DRIVER(lp873x_ldo) = { .name = LP873X_LDO_DRIVER, .id = UCLASS_REGULATOR, .ops = &lp873x_ldo_ops, .probe = lp873x_ldo_probe, }; static const struct dm_regulator_ops lp873x_buck_ops = { .get_value = buck_get_value, .set_value = buck_set_value, .get_enable = buck_get_enable, .set_enable = buck_set_enable, }; U_BOOT_DRIVER(lp873x_buck) = { .name = LP873X_BUCK_DRIVER, .id = UCLASS_REGULATOR, .ops = &lp873x_buck_ops, .probe = lp873x_buck_probe, }; |