1 /* 2 * Regulator Driver for Freescale MC13783 PMIC 3 * 4 * Copyright 2010 Yong Shen <yong.shen@linaro.org> 5 * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> 6 * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/mfd/mc13783.h> 14 #include <linux/regulator/machine.h> 15 #include <linux/regulator/driver.h> 16 #include <linux/platform_device.h> 17 #include <linux/kernel.h> 18 #include <linux/slab.h> 19 #include <linux/init.h> 20 #include <linux/err.h> 21 #include <linux/module.h> 22 #include "mc13xxx.h" 23 24 #define MC13783_REG_SWITCHERS0 24 25 /* Enable does not exist for SW1A */ 26 #define MC13783_REG_SWITCHERS0_SW1AEN 0 27 #define MC13783_REG_SWITCHERS0_SW1AVSEL 0 28 #define MC13783_REG_SWITCHERS0_SW1AVSEL_M (63 << 0) 29 30 #define MC13783_REG_SWITCHERS1 25 31 /* Enable does not exist for SW1B */ 32 #define MC13783_REG_SWITCHERS1_SW1BEN 0 33 #define MC13783_REG_SWITCHERS1_SW1BVSEL 0 34 #define MC13783_REG_SWITCHERS1_SW1BVSEL_M (63 << 0) 35 36 #define MC13783_REG_SWITCHERS2 26 37 /* Enable does not exist for SW2A */ 38 #define MC13783_REG_SWITCHERS2_SW2AEN 0 39 #define MC13783_REG_SWITCHERS2_SW2AVSEL 0 40 #define MC13783_REG_SWITCHERS2_SW2AVSEL_M (63 << 0) 41 42 #define MC13783_REG_SWITCHERS3 27 43 /* Enable does not exist for SW2B */ 44 #define MC13783_REG_SWITCHERS3_SW2BEN 0 45 #define MC13783_REG_SWITCHERS3_SW2BVSEL 0 46 #define MC13783_REG_SWITCHERS3_SW2BVSEL_M (63 << 0) 47 48 #define MC13783_REG_SWITCHERS5 29 49 #define MC13783_REG_SWITCHERS5_SW3EN (1 << 20) 50 #define MC13783_REG_SWITCHERS5_SW3VSEL 18 51 #define MC13783_REG_SWITCHERS5_SW3VSEL_M (3 << 18) 52 53 #define MC13783_REG_REGULATORSETTING0 30 54 #define MC13783_REG_REGULATORSETTING0_VIOLOVSEL 2 55 #define MC13783_REG_REGULATORSETTING0_VDIGVSEL 4 56 #define MC13783_REG_REGULATORSETTING0_VGENVSEL 6 57 #define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL 9 58 #define MC13783_REG_REGULATORSETTING0_VRFREFVSEL 11 59 #define MC13783_REG_REGULATORSETTING0_VRFCPVSEL 13 60 #define MC13783_REG_REGULATORSETTING0_VSIMVSEL 14 61 #define MC13783_REG_REGULATORSETTING0_VESIMVSEL 15 62 #define MC13783_REG_REGULATORSETTING0_VCAMVSEL 16 63 64 #define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M (3 << 2) 65 #define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M (3 << 4) 66 #define MC13783_REG_REGULATORSETTING0_VGENVSEL_M (7 << 6) 67 #define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M (3 << 9) 68 #define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M (3 << 11) 69 #define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M (1 << 13) 70 #define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M (1 << 14) 71 #define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M (1 << 15) 72 #define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M (7 << 16) 73 74 #define MC13783_REG_REGULATORSETTING1 31 75 #define MC13783_REG_REGULATORSETTING1_VVIBVSEL 0 76 #define MC13783_REG_REGULATORSETTING1_VRF1VSEL 2 77 #define MC13783_REG_REGULATORSETTING1_VRF2VSEL 4 78 #define MC13783_REG_REGULATORSETTING1_VMMC1VSEL 6 79 #define MC13783_REG_REGULATORSETTING1_VMMC2VSEL 9 80 81 #define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M (3 << 0) 82 #define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M (3 << 2) 83 #define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M (3 << 4) 84 #define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M (7 << 6) 85 #define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M (7 << 9) 86 87 #define MC13783_REG_REGULATORMODE0 32 88 #define MC13783_REG_REGULATORMODE0_VAUDIOEN (1 << 0) 89 #define MC13783_REG_REGULATORMODE0_VIOHIEN (1 << 3) 90 #define MC13783_REG_REGULATORMODE0_VIOLOEN (1 << 6) 91 #define MC13783_REG_REGULATORMODE0_VDIGEN (1 << 9) 92 #define MC13783_REG_REGULATORMODE0_VGENEN (1 << 12) 93 #define MC13783_REG_REGULATORMODE0_VRFDIGEN (1 << 15) 94 #define MC13783_REG_REGULATORMODE0_VRFREFEN (1 << 18) 95 #define MC13783_REG_REGULATORMODE0_VRFCPEN (1 << 21) 96 97 #define MC13783_REG_REGULATORMODE1 33 98 #define MC13783_REG_REGULATORMODE1_VSIMEN (1 << 0) 99 #define MC13783_REG_REGULATORMODE1_VESIMEN (1 << 3) 100 #define MC13783_REG_REGULATORMODE1_VCAMEN (1 << 6) 101 #define MC13783_REG_REGULATORMODE1_VRFBGEN (1 << 9) 102 #define MC13783_REG_REGULATORMODE1_VVIBEN (1 << 11) 103 #define MC13783_REG_REGULATORMODE1_VRF1EN (1 << 12) 104 #define MC13783_REG_REGULATORMODE1_VRF2EN (1 << 15) 105 #define MC13783_REG_REGULATORMODE1_VMMC1EN (1 << 18) 106 #define MC13783_REG_REGULATORMODE1_VMMC2EN (1 << 21) 107 108 #define MC13783_REG_POWERMISC 34 109 #define MC13783_REG_POWERMISC_GPO1EN (1 << 6) 110 #define MC13783_REG_POWERMISC_GPO2EN (1 << 8) 111 #define MC13783_REG_POWERMISC_GPO3EN (1 << 10) 112 #define MC13783_REG_POWERMISC_GPO4EN (1 << 12) 113 #define MC13783_REG_POWERMISC_PWGT1SPIEN (1 << 15) 114 #define MC13783_REG_POWERMISC_PWGT2SPIEN (1 << 16) 115 116 #define MC13783_REG_POWERMISC_PWGTSPI_M (3 << 15) 117 118 119 /* Voltage Values */ 120 static const int mc13783_sw1x_val[] = { 121 900000, 925000, 950000, 975000, 122 1000000, 1025000, 1050000, 1075000, 123 1100000, 1125000, 1150000, 1175000, 124 1200000, 1225000, 1250000, 1275000, 125 1300000, 1325000, 1350000, 1375000, 126 1400000, 1425000, 1450000, 1475000, 127 1500000, 1525000, 1550000, 1575000, 128 1600000, 1625000, 1650000, 1675000, 129 1700000, 1700000, 1700000, 1700000, 130 1800000, 1800000, 1800000, 1800000, 131 1850000, 1850000, 1850000, 1850000, 132 2000000, 2000000, 2000000, 2000000, 133 2100000, 2100000, 2100000, 2100000, 134 2200000, 2200000, 2200000, 2200000, 135 2200000, 2200000, 2200000, 2200000, 136 2200000, 2200000, 2200000, 2200000, 137 }; 138 139 static const int mc13783_sw2x_val[] = { 140 900000, 925000, 950000, 975000, 141 1000000, 1025000, 1050000, 1075000, 142 1100000, 1125000, 1150000, 1175000, 143 1200000, 1225000, 1250000, 1275000, 144 1300000, 1325000, 1350000, 1375000, 145 1400000, 1425000, 1450000, 1475000, 146 1500000, 1525000, 1550000, 1575000, 147 1600000, 1625000, 1650000, 1675000, 148 1700000, 1700000, 1700000, 1700000, 149 1800000, 1800000, 1800000, 1800000, 150 1900000, 1900000, 1900000, 1900000, 151 2000000, 2000000, 2000000, 2000000, 152 2100000, 2100000, 2100000, 2100000, 153 2200000, 2200000, 2200000, 2200000, 154 2200000, 2200000, 2200000, 2200000, 155 2200000, 2200000, 2200000, 2200000, 156 }; 157 158 static const unsigned int mc13783_sw3_val[] = { 159 5000000, 5000000, 5000000, 5500000, 160 }; 161 162 static const unsigned int mc13783_vaudio_val[] = { 163 2775000, 164 }; 165 166 static const unsigned int mc13783_viohi_val[] = { 167 2775000, 168 }; 169 170 static const unsigned int mc13783_violo_val[] = { 171 1200000, 1300000, 1500000, 1800000, 172 }; 173 174 static const unsigned int mc13783_vdig_val[] = { 175 1200000, 1300000, 1500000, 1800000, 176 }; 177 178 static const unsigned int mc13783_vgen_val[] = { 179 1200000, 1300000, 1500000, 1800000, 180 1100000, 2000000, 2775000, 2400000, 181 }; 182 183 static const unsigned int mc13783_vrfdig_val[] = { 184 1200000, 1500000, 1800000, 1875000, 185 }; 186 187 static const unsigned int mc13783_vrfref_val[] = { 188 2475000, 2600000, 2700000, 2775000, 189 }; 190 191 static const unsigned int mc13783_vrfcp_val[] = { 192 2700000, 2775000, 193 }; 194 195 static const unsigned int mc13783_vsim_val[] = { 196 1800000, 2900000, 3000000, 197 }; 198 199 static const unsigned int mc13783_vesim_val[] = { 200 1800000, 2900000, 201 }; 202 203 static const unsigned int mc13783_vcam_val[] = { 204 1500000, 1800000, 2500000, 2550000, 205 2600000, 2750000, 2800000, 3000000, 206 }; 207 208 static const unsigned int mc13783_vrfbg_val[] = { 209 1250000, 210 }; 211 212 static const unsigned int mc13783_vvib_val[] = { 213 1300000, 1800000, 2000000, 3000000, 214 }; 215 216 static const unsigned int mc13783_vmmc_val[] = { 217 1600000, 1800000, 2000000, 2600000, 218 2700000, 2800000, 2900000, 3000000, 219 }; 220 221 static const unsigned int mc13783_vrf_val[] = { 222 1500000, 1875000, 2700000, 2775000, 223 }; 224 225 static const unsigned int mc13783_gpo_val[] = { 226 3100000, 227 }; 228 229 static const unsigned int mc13783_pwgtdrv_val[] = { 230 5500000, 231 }; 232 233 static struct regulator_ops mc13783_gpo_regulator_ops; 234 235 #define MC13783_DEFINE(prefix, name, reg, vsel_reg, voltages) \ 236 MC13xxx_DEFINE(MC13783_REG_, name, reg, vsel_reg, voltages, \ 237 mc13xxx_regulator_ops) 238 239 #define MC13783_FIXED_DEFINE(prefix, name, reg, voltages) \ 240 MC13xxx_FIXED_DEFINE(MC13783_REG_, name, reg, voltages, \ 241 mc13xxx_fixed_regulator_ops) 242 243 #define MC13783_GPO_DEFINE(prefix, name, reg, voltages) \ 244 MC13xxx_GPO_DEFINE(MC13783_REG_, name, reg, voltages, \ 245 mc13783_gpo_regulator_ops) 246 247 #define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \ 248 MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages) 249 #define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \ 250 MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages) 251 252 static struct mc13xxx_regulator mc13783_regulators[] = { 253 MC13783_DEFINE_SW(SW1A, SWITCHERS0, SWITCHERS0, mc13783_sw1x_val), 254 MC13783_DEFINE_SW(SW1B, SWITCHERS1, SWITCHERS1, mc13783_sw1x_val), 255 MC13783_DEFINE_SW(SW2A, SWITCHERS2, SWITCHERS2, mc13783_sw2x_val), 256 MC13783_DEFINE_SW(SW2B, SWITCHERS3, SWITCHERS3, mc13783_sw2x_val), 257 MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val), 258 259 MC13783_FIXED_DEFINE(REG, VAUDIO, REGULATORMODE0, mc13783_vaudio_val), 260 MC13783_FIXED_DEFINE(REG, VIOHI, REGULATORMODE0, mc13783_viohi_val), 261 MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0, 262 mc13783_violo_val), 263 MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, 264 mc13783_vdig_val), 265 MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0, 266 mc13783_vgen_val), 267 MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0, 268 mc13783_vrfdig_val), 269 MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0, 270 mc13783_vrfref_val), 271 MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0, 272 mc13783_vrfcp_val), 273 MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0, 274 mc13783_vsim_val), 275 MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0, 276 mc13783_vesim_val), 277 MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, 278 mc13783_vcam_val), 279 MC13783_FIXED_DEFINE(REG, VRFBG, REGULATORMODE1, mc13783_vrfbg_val), 280 MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1, 281 mc13783_vvib_val), 282 MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1, 283 mc13783_vrf_val), 284 MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1, 285 mc13783_vrf_val), 286 MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1, 287 mc13783_vmmc_val), 288 MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1, 289 mc13783_vmmc_val), 290 MC13783_GPO_DEFINE(REG, GPO1, POWERMISC, mc13783_gpo_val), 291 MC13783_GPO_DEFINE(REG, GPO2, POWERMISC, mc13783_gpo_val), 292 MC13783_GPO_DEFINE(REG, GPO3, POWERMISC, mc13783_gpo_val), 293 MC13783_GPO_DEFINE(REG, GPO4, POWERMISC, mc13783_gpo_val), 294 MC13783_GPO_DEFINE(REG, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val), 295 MC13783_GPO_DEFINE(REG, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val), 296 }; 297 298 static int mc13783_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask, 299 u32 val) 300 { 301 struct mc13xxx *mc13783 = priv->mc13xxx; 302 int ret; 303 u32 valread; 304 305 BUG_ON(val & ~mask); 306 307 mc13xxx_lock(priv->mc13xxx); 308 ret = mc13xxx_reg_read(mc13783, MC13783_REG_POWERMISC, &valread); 309 if (ret) 310 goto out; 311 312 /* Update the stored state for Power Gates. */ 313 priv->powermisc_pwgt_state = 314 (priv->powermisc_pwgt_state & ~mask) | val; 315 priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M; 316 317 /* Construct the new register value */ 318 valread = (valread & ~mask) | val; 319 /* Overwrite the PWGTxEN with the stored version */ 320 valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) | 321 priv->powermisc_pwgt_state; 322 323 ret = mc13xxx_reg_write(mc13783, MC13783_REG_POWERMISC, valread); 324 out: 325 mc13xxx_unlock(priv->mc13xxx); 326 return ret; 327 } 328 329 static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev) 330 { 331 struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); 332 struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators; 333 int id = rdev_get_id(rdev); 334 u32 en_val = mc13xxx_regulators[id].enable_bit; 335 336 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); 337 338 /* Power Gate enable value is 0 */ 339 if (id == MC13783_REG_PWGT1SPI || 340 id == MC13783_REG_PWGT2SPI) 341 en_val = 0; 342 343 return mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit, 344 en_val); 345 } 346 347 static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev) 348 { 349 struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); 350 struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators; 351 int id = rdev_get_id(rdev); 352 u32 dis_val = 0; 353 354 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); 355 356 /* Power Gate disable value is 1 */ 357 if (id == MC13783_REG_PWGT1SPI || 358 id == MC13783_REG_PWGT2SPI) 359 dis_val = mc13xxx_regulators[id].enable_bit; 360 361 return mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit, 362 dis_val); 363 } 364 365 static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev) 366 { 367 struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); 368 struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators; 369 int ret, id = rdev_get_id(rdev); 370 unsigned int val; 371 372 mc13xxx_lock(priv->mc13xxx); 373 ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val); 374 mc13xxx_unlock(priv->mc13xxx); 375 376 if (ret) 377 return ret; 378 379 /* Power Gates state is stored in powermisc_pwgt_state 380 * where the meaning of bits is negated */ 381 val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) | 382 (priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M); 383 384 return (val & mc13xxx_regulators[id].enable_bit) != 0; 385 } 386 387 static struct regulator_ops mc13783_gpo_regulator_ops = { 388 .enable = mc13783_gpo_regulator_enable, 389 .disable = mc13783_gpo_regulator_disable, 390 .is_enabled = mc13783_gpo_regulator_is_enabled, 391 .list_voltage = regulator_list_voltage_table, 392 .set_voltage = mc13xxx_fixed_regulator_set_voltage, 393 }; 394 395 static int mc13783_regulator_probe(struct platform_device *pdev) 396 { 397 struct mc13xxx_regulator_priv *priv; 398 struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent); 399 struct mc13xxx_regulator_platform_data *pdata = 400 dev_get_platdata(&pdev->dev); 401 struct mc13xxx_regulator_init_data *mc13xxx_data; 402 struct regulator_config config = { }; 403 int i, num_regulators; 404 405 num_regulators = mc13xxx_get_num_regulators_dt(pdev); 406 407 if (num_regulators <= 0 && pdata) 408 num_regulators = pdata->num_regulators; 409 if (num_regulators <= 0) 410 return -EINVAL; 411 412 priv = devm_kzalloc(&pdev->dev, sizeof(*priv) + 413 num_regulators * sizeof(priv->regulators[0]), 414 GFP_KERNEL); 415 if (!priv) 416 return -ENOMEM; 417 418 priv->num_regulators = num_regulators; 419 priv->mc13xxx_regulators = mc13783_regulators; 420 priv->mc13xxx = mc13783; 421 platform_set_drvdata(pdev, priv); 422 423 mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13783_regulators, 424 ARRAY_SIZE(mc13783_regulators)); 425 426 for (i = 0; i < priv->num_regulators; i++) { 427 struct regulator_init_data *init_data; 428 struct regulator_desc *desc; 429 struct device_node *node = NULL; 430 int id; 431 432 if (mc13xxx_data) { 433 id = mc13xxx_data[i].id; 434 init_data = mc13xxx_data[i].init_data; 435 node = mc13xxx_data[i].node; 436 } else { 437 id = pdata->regulators[i].id; 438 init_data = pdata->regulators[i].init_data; 439 } 440 desc = &mc13783_regulators[id].desc; 441 442 config.dev = &pdev->dev; 443 config.init_data = init_data; 444 config.driver_data = priv; 445 config.of_node = node; 446 447 priv->regulators[i] = devm_regulator_register(&pdev->dev, desc, 448 &config); 449 if (IS_ERR(priv->regulators[i])) { 450 dev_err(&pdev->dev, "failed to register regulator %s\n", 451 mc13783_regulators[i].desc.name); 452 return PTR_ERR(priv->regulators[i]); 453 } 454 } 455 456 return 0; 457 } 458 459 static struct platform_driver mc13783_regulator_driver = { 460 .driver = { 461 .name = "mc13783-regulator", 462 }, 463 .probe = mc13783_regulator_probe, 464 }; 465 466 static int __init mc13783_regulator_init(void) 467 { 468 return platform_driver_register(&mc13783_regulator_driver); 469 } 470 subsys_initcall(mc13783_regulator_init); 471 472 static void __exit mc13783_regulator_exit(void) 473 { 474 platform_driver_unregister(&mc13783_regulator_driver); 475 } 476 module_exit(mc13783_regulator_exit); 477 478 MODULE_LICENSE("GPL v2"); 479 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); 480 MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC"); 481 MODULE_ALIAS("platform:mc13783-regulator"); 482