Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014, Sony Mobile Communications AB. |
| 3 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 and |
| 7 | * only version 2 as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/of.h> |
| 18 | #include <linux/of_device.h> |
| 19 | #include <linux/regulator/driver.h> |
| 20 | #include <linux/regulator/machine.h> |
| 21 | #include <linux/regulator/of_regulator.h> |
| 22 | #include <linux/mfd/qcom_rpm.h> |
| 23 | |
| 24 | #include <dt-bindings/mfd/qcom-rpm.h> |
| 25 | |
| 26 | #define MAX_REQUEST_LEN 2 |
| 27 | |
| 28 | struct request_member { |
| 29 | int word; |
| 30 | unsigned int mask; |
| 31 | int shift; |
| 32 | }; |
| 33 | |
| 34 | struct rpm_reg_parts { |
| 35 | struct request_member mV; /* used if voltage is in mV */ |
| 36 | struct request_member uV; /* used if voltage is in uV */ |
| 37 | struct request_member ip; /* peak current in mA */ |
| 38 | struct request_member pd; /* pull down enable */ |
| 39 | struct request_member ia; /* average current in mA */ |
| 40 | struct request_member fm; /* force mode */ |
| 41 | struct request_member pm; /* power mode */ |
| 42 | struct request_member pc; /* pin control */ |
| 43 | struct request_member pf; /* pin function */ |
| 44 | struct request_member enable_state; /* NCP and switch */ |
| 45 | struct request_member comp_mode; /* NCP */ |
| 46 | struct request_member freq; /* frequency: NCP and SMPS */ |
| 47 | struct request_member freq_clk_src; /* clock source: SMPS */ |
| 48 | struct request_member hpm; /* switch: control OCP and SS */ |
| 49 | int request_len; |
| 50 | }; |
| 51 | |
| 52 | #define FORCE_MODE_IS_2_BITS(reg) \ |
Axel Lin | 6a64250 | 2014-09-25 10:17:29 +0800 | [diff] [blame] | 53 | (((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3) |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 54 | |
| 55 | struct qcom_rpm_reg { |
| 56 | struct qcom_rpm *rpm; |
| 57 | |
| 58 | struct mutex lock; |
| 59 | struct device *dev; |
| 60 | struct regulator_desc desc; |
| 61 | const struct rpm_reg_parts *parts; |
| 62 | |
| 63 | int resource; |
| 64 | u32 val[MAX_REQUEST_LEN]; |
| 65 | |
| 66 | int uV; |
| 67 | int is_enabled; |
| 68 | |
| 69 | bool supports_force_mode_auto; |
| 70 | bool supports_force_mode_bypass; |
| 71 | }; |
| 72 | |
| 73 | static const struct rpm_reg_parts rpm8660_ldo_parts = { |
| 74 | .request_len = 2, |
| 75 | .mV = { 0, 0x00000FFF, 0 }, |
| 76 | .ip = { 0, 0x00FFF000, 12 }, |
| 77 | .fm = { 0, 0x03000000, 24 }, |
| 78 | .pc = { 0, 0x3C000000, 26 }, |
| 79 | .pf = { 0, 0xC0000000, 30 }, |
| 80 | .pd = { 1, 0x00000001, 0 }, |
| 81 | .ia = { 1, 0x00001FFE, 1 }, |
| 82 | }; |
| 83 | |
| 84 | static const struct rpm_reg_parts rpm8660_smps_parts = { |
| 85 | .request_len = 2, |
| 86 | .mV = { 0, 0x00000FFF, 0 }, |
| 87 | .ip = { 0, 0x00FFF000, 12 }, |
| 88 | .fm = { 0, 0x03000000, 24 }, |
| 89 | .pc = { 0, 0x3C000000, 26 }, |
| 90 | .pf = { 0, 0xC0000000, 30 }, |
| 91 | .pd = { 1, 0x00000001, 0 }, |
| 92 | .ia = { 1, 0x00001FFE, 1 }, |
| 93 | .freq = { 1, 0x001FE000, 13 }, |
| 94 | .freq_clk_src = { 1, 0x00600000, 21 }, |
| 95 | }; |
| 96 | |
| 97 | static const struct rpm_reg_parts rpm8660_switch_parts = { |
| 98 | .request_len = 1, |
| 99 | .enable_state = { 0, 0x00000001, 0 }, |
| 100 | .pd = { 0, 0x00000002, 1 }, |
| 101 | .pc = { 0, 0x0000003C, 2 }, |
| 102 | .pf = { 0, 0x000000C0, 6 }, |
| 103 | .hpm = { 0, 0x00000300, 8 }, |
| 104 | }; |
| 105 | |
| 106 | static const struct rpm_reg_parts rpm8660_ncp_parts = { |
| 107 | .request_len = 1, |
| 108 | .mV = { 0, 0x00000FFF, 0 }, |
| 109 | .enable_state = { 0, 0x00001000, 12 }, |
| 110 | .comp_mode = { 0, 0x00002000, 13 }, |
| 111 | .freq = { 0, 0x003FC000, 14 }, |
| 112 | }; |
| 113 | |
| 114 | static const struct rpm_reg_parts rpm8960_ldo_parts = { |
| 115 | .request_len = 2, |
| 116 | .uV = { 0, 0x007FFFFF, 0 }, |
| 117 | .pd = { 0, 0x00800000, 23 }, |
| 118 | .pc = { 0, 0x0F000000, 24 }, |
| 119 | .pf = { 0, 0xF0000000, 28 }, |
| 120 | .ip = { 1, 0x000003FF, 0 }, |
| 121 | .ia = { 1, 0x000FFC00, 10 }, |
| 122 | .fm = { 1, 0x00700000, 20 }, |
| 123 | }; |
| 124 | |
| 125 | static const struct rpm_reg_parts rpm8960_smps_parts = { |
| 126 | .request_len = 2, |
| 127 | .uV = { 0, 0x007FFFFF, 0 }, |
| 128 | .pd = { 0, 0x00800000, 23 }, |
| 129 | .pc = { 0, 0x0F000000, 24 }, |
| 130 | .pf = { 0, 0xF0000000, 28 }, |
| 131 | .ip = { 1, 0x000003FF, 0 }, |
| 132 | .ia = { 1, 0x000FFC00, 10 }, |
| 133 | .fm = { 1, 0x00700000, 20 }, |
| 134 | .pm = { 1, 0x00800000, 23 }, |
| 135 | .freq = { 1, 0x1F000000, 24 }, |
| 136 | .freq_clk_src = { 1, 0x60000000, 29 }, |
| 137 | }; |
| 138 | |
| 139 | static const struct rpm_reg_parts rpm8960_switch_parts = { |
| 140 | .request_len = 1, |
| 141 | .enable_state = { 0, 0x00000001, 0 }, |
| 142 | .pd = { 0, 0x00000002, 1 }, |
| 143 | .pc = { 0, 0x0000003C, 2 }, |
| 144 | .pf = { 0, 0x000003C0, 6 }, |
| 145 | .hpm = { 0, 0x00000C00, 10 }, |
| 146 | }; |
| 147 | |
| 148 | static const struct rpm_reg_parts rpm8960_ncp_parts = { |
| 149 | .request_len = 1, |
| 150 | .uV = { 0, 0x007FFFFF, 0 }, |
| 151 | .enable_state = { 0, 0x00800000, 23 }, |
| 152 | .comp_mode = { 0, 0x01000000, 24 }, |
| 153 | .freq = { 0, 0x3E000000, 25 }, |
| 154 | }; |
| 155 | |
| 156 | /* |
| 157 | * Physically available PMIC regulator voltage ranges |
| 158 | */ |
| 159 | static const struct regulator_linear_range pldo_ranges[] = { |
| 160 | REGULATOR_LINEAR_RANGE( 750000, 0, 59, 12500), |
| 161 | REGULATOR_LINEAR_RANGE(1500000, 60, 123, 25000), |
| 162 | REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000), |
| 163 | }; |
| 164 | |
| 165 | static const struct regulator_linear_range nldo_ranges[] = { |
| 166 | REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500), |
| 167 | }; |
| 168 | |
| 169 | static const struct regulator_linear_range nldo1200_ranges[] = { |
| 170 | REGULATOR_LINEAR_RANGE( 375000, 0, 59, 6250), |
| 171 | REGULATOR_LINEAR_RANGE( 750000, 60, 123, 12500), |
| 172 | }; |
| 173 | |
| 174 | static const struct regulator_linear_range smps_ranges[] = { |
| 175 | REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500), |
| 176 | REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500), |
| 177 | REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000), |
| 178 | }; |
| 179 | |
| 180 | static const struct regulator_linear_range ftsmps_ranges[] = { |
| 181 | REGULATOR_LINEAR_RANGE( 350000, 0, 6, 50000), |
| 182 | REGULATOR_LINEAR_RANGE( 700000, 7, 63, 12500), |
| 183 | REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000), |
| 184 | }; |
| 185 | |
Josh Cartwright | 0f5bb5b | 2014-11-20 13:41:25 -0600 | [diff] [blame] | 186 | static const struct regulator_linear_range smb208_ranges[] = { |
| 187 | REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500), |
| 188 | REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500), |
| 189 | REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000), |
| 190 | REGULATOR_LINEAR_RANGE(3100000, 154, 234, 25000), |
| 191 | }; |
| 192 | |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 193 | static const struct regulator_linear_range ncp_ranges[] = { |
| 194 | REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000), |
| 195 | }; |
| 196 | |
| 197 | static int rpm_reg_write(struct qcom_rpm_reg *vreg, |
| 198 | const struct request_member *req, |
| 199 | const int value) |
| 200 | { |
| 201 | if (WARN_ON((value << req->shift) & ~req->mask)) |
| 202 | return -EINVAL; |
| 203 | |
| 204 | vreg->val[req->word] &= ~req->mask; |
| 205 | vreg->val[req->word] |= value << req->shift; |
| 206 | |
| 207 | return qcom_rpm_write(vreg->rpm, |
Bjorn Andersson | 8039268 | 2014-11-26 13:51:01 -0800 | [diff] [blame] | 208 | QCOM_RPM_ACTIVE_STATE, |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 209 | vreg->resource, |
| 210 | vreg->val, |
| 211 | vreg->parts->request_len); |
| 212 | } |
| 213 | |
| 214 | static int rpm_reg_set_mV_sel(struct regulator_dev *rdev, |
| 215 | unsigned selector) |
| 216 | { |
| 217 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 218 | const struct rpm_reg_parts *parts = vreg->parts; |
| 219 | const struct request_member *req = &parts->mV; |
| 220 | int ret = 0; |
| 221 | int uV; |
| 222 | |
| 223 | if (req->mask == 0) |
| 224 | return -EINVAL; |
| 225 | |
| 226 | uV = regulator_list_voltage_linear_range(rdev, selector); |
| 227 | if (uV < 0) |
| 228 | return uV; |
| 229 | |
| 230 | mutex_lock(&vreg->lock); |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 231 | if (vreg->is_enabled) |
Axel Lin | c6515d2 | 2015-01-24 12:01:12 +0800 | [diff] [blame] | 232 | ret = rpm_reg_write(vreg, req, uV / 1000); |
| 233 | |
| 234 | if (!ret) |
| 235 | vreg->uV = uV; |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 236 | mutex_unlock(&vreg->lock); |
| 237 | |
| 238 | return ret; |
| 239 | } |
| 240 | |
| 241 | static int rpm_reg_set_uV_sel(struct regulator_dev *rdev, |
| 242 | unsigned selector) |
| 243 | { |
| 244 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 245 | const struct rpm_reg_parts *parts = vreg->parts; |
| 246 | const struct request_member *req = &parts->uV; |
| 247 | int ret = 0; |
| 248 | int uV; |
| 249 | |
| 250 | if (req->mask == 0) |
| 251 | return -EINVAL; |
| 252 | |
| 253 | uV = regulator_list_voltage_linear_range(rdev, selector); |
| 254 | if (uV < 0) |
| 255 | return uV; |
| 256 | |
| 257 | mutex_lock(&vreg->lock); |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 258 | if (vreg->is_enabled) |
Axel Lin | c6515d2 | 2015-01-24 12:01:12 +0800 | [diff] [blame] | 259 | ret = rpm_reg_write(vreg, req, uV); |
| 260 | |
| 261 | if (!ret) |
| 262 | vreg->uV = uV; |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 263 | mutex_unlock(&vreg->lock); |
| 264 | |
| 265 | return ret; |
| 266 | } |
| 267 | |
| 268 | static int rpm_reg_get_voltage(struct regulator_dev *rdev) |
| 269 | { |
| 270 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 271 | |
| 272 | return vreg->uV; |
| 273 | } |
| 274 | |
| 275 | static int rpm_reg_mV_enable(struct regulator_dev *rdev) |
| 276 | { |
| 277 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 278 | const struct rpm_reg_parts *parts = vreg->parts; |
| 279 | const struct request_member *req = &parts->mV; |
| 280 | int ret; |
| 281 | |
| 282 | if (req->mask == 0) |
| 283 | return -EINVAL; |
| 284 | |
| 285 | mutex_lock(&vreg->lock); |
| 286 | ret = rpm_reg_write(vreg, req, vreg->uV / 1000); |
| 287 | if (!ret) |
| 288 | vreg->is_enabled = 1; |
| 289 | mutex_unlock(&vreg->lock); |
| 290 | |
| 291 | return ret; |
| 292 | } |
| 293 | |
| 294 | static int rpm_reg_uV_enable(struct regulator_dev *rdev) |
| 295 | { |
| 296 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 297 | const struct rpm_reg_parts *parts = vreg->parts; |
| 298 | const struct request_member *req = &parts->uV; |
| 299 | int ret; |
| 300 | |
| 301 | if (req->mask == 0) |
| 302 | return -EINVAL; |
| 303 | |
| 304 | mutex_lock(&vreg->lock); |
| 305 | ret = rpm_reg_write(vreg, req, vreg->uV); |
| 306 | if (!ret) |
| 307 | vreg->is_enabled = 1; |
| 308 | mutex_unlock(&vreg->lock); |
| 309 | |
| 310 | return ret; |
| 311 | } |
| 312 | |
| 313 | static int rpm_reg_switch_enable(struct regulator_dev *rdev) |
| 314 | { |
| 315 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 316 | const struct rpm_reg_parts *parts = vreg->parts; |
| 317 | const struct request_member *req = &parts->enable_state; |
| 318 | int ret; |
| 319 | |
| 320 | if (req->mask == 0) |
| 321 | return -EINVAL; |
| 322 | |
| 323 | mutex_lock(&vreg->lock); |
| 324 | ret = rpm_reg_write(vreg, req, 1); |
| 325 | if (!ret) |
| 326 | vreg->is_enabled = 1; |
| 327 | mutex_unlock(&vreg->lock); |
| 328 | |
| 329 | return ret; |
| 330 | } |
| 331 | |
| 332 | static int rpm_reg_mV_disable(struct regulator_dev *rdev) |
| 333 | { |
| 334 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 335 | const struct rpm_reg_parts *parts = vreg->parts; |
| 336 | const struct request_member *req = &parts->mV; |
| 337 | int ret; |
| 338 | |
| 339 | if (req->mask == 0) |
| 340 | return -EINVAL; |
| 341 | |
| 342 | mutex_lock(&vreg->lock); |
| 343 | ret = rpm_reg_write(vreg, req, 0); |
| 344 | if (!ret) |
| 345 | vreg->is_enabled = 0; |
| 346 | mutex_unlock(&vreg->lock); |
| 347 | |
| 348 | return ret; |
| 349 | } |
| 350 | |
| 351 | static int rpm_reg_uV_disable(struct regulator_dev *rdev) |
| 352 | { |
| 353 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 354 | const struct rpm_reg_parts *parts = vreg->parts; |
| 355 | const struct request_member *req = &parts->uV; |
| 356 | int ret; |
| 357 | |
| 358 | if (req->mask == 0) |
| 359 | return -EINVAL; |
| 360 | |
| 361 | mutex_lock(&vreg->lock); |
| 362 | ret = rpm_reg_write(vreg, req, 0); |
| 363 | if (!ret) |
| 364 | vreg->is_enabled = 0; |
| 365 | mutex_unlock(&vreg->lock); |
| 366 | |
| 367 | return ret; |
| 368 | } |
| 369 | |
| 370 | static int rpm_reg_switch_disable(struct regulator_dev *rdev) |
| 371 | { |
| 372 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 373 | const struct rpm_reg_parts *parts = vreg->parts; |
| 374 | const struct request_member *req = &parts->enable_state; |
| 375 | int ret; |
| 376 | |
| 377 | if (req->mask == 0) |
| 378 | return -EINVAL; |
| 379 | |
| 380 | mutex_lock(&vreg->lock); |
| 381 | ret = rpm_reg_write(vreg, req, 0); |
| 382 | if (!ret) |
| 383 | vreg->is_enabled = 0; |
| 384 | mutex_unlock(&vreg->lock); |
| 385 | |
| 386 | return ret; |
| 387 | } |
| 388 | |
| 389 | static int rpm_reg_is_enabled(struct regulator_dev *rdev) |
| 390 | { |
| 391 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); |
| 392 | |
| 393 | return vreg->is_enabled; |
| 394 | } |
| 395 | |
| 396 | static struct regulator_ops uV_ops = { |
| 397 | .list_voltage = regulator_list_voltage_linear_range, |
| 398 | |
| 399 | .set_voltage_sel = rpm_reg_set_uV_sel, |
| 400 | .get_voltage = rpm_reg_get_voltage, |
| 401 | |
| 402 | .enable = rpm_reg_uV_enable, |
| 403 | .disable = rpm_reg_uV_disable, |
| 404 | .is_enabled = rpm_reg_is_enabled, |
| 405 | }; |
| 406 | |
| 407 | static struct regulator_ops mV_ops = { |
| 408 | .list_voltage = regulator_list_voltage_linear_range, |
| 409 | |
| 410 | .set_voltage_sel = rpm_reg_set_mV_sel, |
| 411 | .get_voltage = rpm_reg_get_voltage, |
| 412 | |
| 413 | .enable = rpm_reg_mV_enable, |
| 414 | .disable = rpm_reg_mV_disable, |
| 415 | .is_enabled = rpm_reg_is_enabled, |
| 416 | }; |
| 417 | |
| 418 | static struct regulator_ops switch_ops = { |
| 419 | .enable = rpm_reg_switch_enable, |
| 420 | .disable = rpm_reg_switch_disable, |
| 421 | .is_enabled = rpm_reg_is_enabled, |
| 422 | }; |
| 423 | |
| 424 | /* |
| 425 | * PM8058 regulators |
| 426 | */ |
| 427 | static const struct qcom_rpm_reg pm8058_pldo = { |
| 428 | .desc.linear_ranges = pldo_ranges, |
| 429 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), |
| 430 | .desc.n_voltages = 161, |
| 431 | .desc.ops = &mV_ops, |
| 432 | .parts = &rpm8660_ldo_parts, |
| 433 | .supports_force_mode_auto = false, |
| 434 | .supports_force_mode_bypass = false, |
| 435 | }; |
| 436 | |
| 437 | static const struct qcom_rpm_reg pm8058_nldo = { |
| 438 | .desc.linear_ranges = nldo_ranges, |
| 439 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), |
| 440 | .desc.n_voltages = 64, |
| 441 | .desc.ops = &mV_ops, |
| 442 | .parts = &rpm8660_ldo_parts, |
| 443 | .supports_force_mode_auto = false, |
| 444 | .supports_force_mode_bypass = false, |
| 445 | }; |
| 446 | |
| 447 | static const struct qcom_rpm_reg pm8058_smps = { |
| 448 | .desc.linear_ranges = smps_ranges, |
| 449 | .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), |
| 450 | .desc.n_voltages = 154, |
| 451 | .desc.ops = &mV_ops, |
| 452 | .parts = &rpm8660_smps_parts, |
| 453 | .supports_force_mode_auto = false, |
| 454 | .supports_force_mode_bypass = false, |
| 455 | }; |
| 456 | |
| 457 | static const struct qcom_rpm_reg pm8058_ncp = { |
| 458 | .desc.linear_ranges = ncp_ranges, |
| 459 | .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), |
| 460 | .desc.n_voltages = 32, |
| 461 | .desc.ops = &mV_ops, |
| 462 | .parts = &rpm8660_ncp_parts, |
| 463 | }; |
| 464 | |
| 465 | static const struct qcom_rpm_reg pm8058_switch = { |
| 466 | .desc.ops = &switch_ops, |
| 467 | .parts = &rpm8660_switch_parts, |
| 468 | }; |
| 469 | |
| 470 | /* |
| 471 | * PM8901 regulators |
| 472 | */ |
| 473 | static const struct qcom_rpm_reg pm8901_pldo = { |
| 474 | .desc.linear_ranges = pldo_ranges, |
| 475 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), |
| 476 | .desc.n_voltages = 161, |
| 477 | .desc.ops = &mV_ops, |
| 478 | .parts = &rpm8660_ldo_parts, |
| 479 | .supports_force_mode_auto = false, |
| 480 | .supports_force_mode_bypass = true, |
| 481 | }; |
| 482 | |
| 483 | static const struct qcom_rpm_reg pm8901_nldo = { |
| 484 | .desc.linear_ranges = nldo_ranges, |
| 485 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), |
| 486 | .desc.n_voltages = 64, |
| 487 | .desc.ops = &mV_ops, |
| 488 | .parts = &rpm8660_ldo_parts, |
| 489 | .supports_force_mode_auto = false, |
| 490 | .supports_force_mode_bypass = true, |
| 491 | }; |
| 492 | |
| 493 | static const struct qcom_rpm_reg pm8901_ftsmps = { |
| 494 | .desc.linear_ranges = ftsmps_ranges, |
| 495 | .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), |
| 496 | .desc.n_voltages = 101, |
| 497 | .desc.ops = &mV_ops, |
| 498 | .parts = &rpm8660_smps_parts, |
| 499 | .supports_force_mode_auto = true, |
| 500 | .supports_force_mode_bypass = false, |
| 501 | }; |
| 502 | |
| 503 | static const struct qcom_rpm_reg pm8901_switch = { |
| 504 | .desc.ops = &switch_ops, |
| 505 | .parts = &rpm8660_switch_parts, |
| 506 | }; |
| 507 | |
| 508 | /* |
| 509 | * PM8921 regulators |
| 510 | */ |
| 511 | static const struct qcom_rpm_reg pm8921_pldo = { |
| 512 | .desc.linear_ranges = pldo_ranges, |
| 513 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), |
| 514 | .desc.n_voltages = 161, |
| 515 | .desc.ops = &uV_ops, |
| 516 | .parts = &rpm8960_ldo_parts, |
| 517 | .supports_force_mode_auto = false, |
| 518 | .supports_force_mode_bypass = true, |
| 519 | }; |
| 520 | |
| 521 | static const struct qcom_rpm_reg pm8921_nldo = { |
| 522 | .desc.linear_ranges = nldo_ranges, |
| 523 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), |
| 524 | .desc.n_voltages = 64, |
| 525 | .desc.ops = &uV_ops, |
| 526 | .parts = &rpm8960_ldo_parts, |
| 527 | .supports_force_mode_auto = false, |
| 528 | .supports_force_mode_bypass = true, |
| 529 | }; |
| 530 | |
| 531 | static const struct qcom_rpm_reg pm8921_nldo1200 = { |
| 532 | .desc.linear_ranges = nldo1200_ranges, |
| 533 | .desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges), |
| 534 | .desc.n_voltages = 124, |
| 535 | .desc.ops = &uV_ops, |
| 536 | .parts = &rpm8960_ldo_parts, |
| 537 | .supports_force_mode_auto = false, |
| 538 | .supports_force_mode_bypass = true, |
| 539 | }; |
| 540 | |
| 541 | static const struct qcom_rpm_reg pm8921_smps = { |
| 542 | .desc.linear_ranges = smps_ranges, |
| 543 | .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), |
| 544 | .desc.n_voltages = 154, |
| 545 | .desc.ops = &uV_ops, |
| 546 | .parts = &rpm8960_smps_parts, |
| 547 | .supports_force_mode_auto = true, |
| 548 | .supports_force_mode_bypass = false, |
| 549 | }; |
| 550 | |
| 551 | static const struct qcom_rpm_reg pm8921_ftsmps = { |
| 552 | .desc.linear_ranges = ftsmps_ranges, |
| 553 | .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), |
| 554 | .desc.n_voltages = 101, |
| 555 | .desc.ops = &uV_ops, |
| 556 | .parts = &rpm8960_smps_parts, |
| 557 | .supports_force_mode_auto = true, |
| 558 | .supports_force_mode_bypass = false, |
| 559 | }; |
| 560 | |
| 561 | static const struct qcom_rpm_reg pm8921_ncp = { |
| 562 | .desc.linear_ranges = ncp_ranges, |
| 563 | .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), |
| 564 | .desc.n_voltages = 32, |
| 565 | .desc.ops = &uV_ops, |
| 566 | .parts = &rpm8960_ncp_parts, |
| 567 | }; |
| 568 | |
| 569 | static const struct qcom_rpm_reg pm8921_switch = { |
| 570 | .desc.ops = &switch_ops, |
| 571 | .parts = &rpm8960_switch_parts, |
| 572 | }; |
| 573 | |
Josh Cartwright | 0f5bb5b | 2014-11-20 13:41:25 -0600 | [diff] [blame] | 574 | static const struct qcom_rpm_reg smb208_smps = { |
| 575 | .desc.linear_ranges = smb208_ranges, |
| 576 | .desc.n_linear_ranges = ARRAY_SIZE(smb208_ranges), |
| 577 | .desc.n_voltages = 235, |
| 578 | .desc.ops = &uV_ops, |
| 579 | .parts = &rpm8960_smps_parts, |
| 580 | .supports_force_mode_auto = false, |
| 581 | .supports_force_mode_bypass = false, |
| 582 | }; |
| 583 | |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 584 | static const struct of_device_id rpm_of_match[] = { |
| 585 | { .compatible = "qcom,rpm-pm8058-pldo", .data = &pm8058_pldo }, |
| 586 | { .compatible = "qcom,rpm-pm8058-nldo", .data = &pm8058_nldo }, |
| 587 | { .compatible = "qcom,rpm-pm8058-smps", .data = &pm8058_smps }, |
| 588 | { .compatible = "qcom,rpm-pm8058-ncp", .data = &pm8058_ncp }, |
| 589 | { .compatible = "qcom,rpm-pm8058-switch", .data = &pm8058_switch }, |
| 590 | |
| 591 | { .compatible = "qcom,rpm-pm8901-pldo", .data = &pm8901_pldo }, |
| 592 | { .compatible = "qcom,rpm-pm8901-nldo", .data = &pm8901_nldo }, |
| 593 | { .compatible = "qcom,rpm-pm8901-ftsmps", .data = &pm8901_ftsmps }, |
| 594 | { .compatible = "qcom,rpm-pm8901-switch", .data = &pm8901_switch }, |
| 595 | |
| 596 | { .compatible = "qcom,rpm-pm8921-pldo", .data = &pm8921_pldo }, |
| 597 | { .compatible = "qcom,rpm-pm8921-nldo", .data = &pm8921_nldo }, |
| 598 | { .compatible = "qcom,rpm-pm8921-nldo1200", .data = &pm8921_nldo1200 }, |
| 599 | { .compatible = "qcom,rpm-pm8921-smps", .data = &pm8921_smps }, |
| 600 | { .compatible = "qcom,rpm-pm8921-ftsmps", .data = &pm8921_ftsmps }, |
| 601 | { .compatible = "qcom,rpm-pm8921-ncp", .data = &pm8921_ncp }, |
| 602 | { .compatible = "qcom,rpm-pm8921-switch", .data = &pm8921_switch }, |
Josh Cartwright | 0f5bb5b | 2014-11-20 13:41:25 -0600 | [diff] [blame] | 603 | |
| 604 | { .compatible = "qcom,rpm-smb208", .data = &smb208_smps }, |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 605 | { } |
| 606 | }; |
| 607 | MODULE_DEVICE_TABLE(of, rpm_of_match); |
| 608 | |
| 609 | static int rpm_reg_set(struct qcom_rpm_reg *vreg, |
| 610 | const struct request_member *req, |
| 611 | const int value) |
| 612 | { |
| 613 | if (req->mask == 0 || (value << req->shift) & ~req->mask) |
| 614 | return -EINVAL; |
| 615 | |
| 616 | vreg->val[req->word] &= ~req->mask; |
| 617 | vreg->val[req->word] |= value << req->shift; |
| 618 | |
| 619 | return 0; |
| 620 | } |
| 621 | |
| 622 | static int rpm_reg_of_parse_freq(struct device *dev, struct qcom_rpm_reg *vreg) |
| 623 | { |
| 624 | static const int freq_table[] = { |
| 625 | 19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000, |
| 626 | 2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000, |
| 627 | 1280000, 1200000, |
| 628 | |
| 629 | }; |
| 630 | const char *key; |
| 631 | u32 freq; |
| 632 | int ret; |
| 633 | int i; |
| 634 | |
| 635 | key = "qcom,switch-mode-frequency"; |
| 636 | ret = of_property_read_u32(dev->of_node, key, &freq); |
| 637 | if (ret) { |
| 638 | dev_err(dev, "regulator requires %s property\n", key); |
| 639 | return -EINVAL; |
| 640 | } |
| 641 | |
| 642 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { |
| 643 | if (freq == freq_table[i]) { |
| 644 | rpm_reg_set(vreg, &vreg->parts->freq, i + 1); |
| 645 | return 0; |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | dev_err(dev, "invalid frequency %d\n", freq); |
| 650 | return -EINVAL; |
| 651 | } |
| 652 | |
| 653 | static int rpm_reg_probe(struct platform_device *pdev) |
| 654 | { |
| 655 | struct regulator_init_data *initdata; |
| 656 | const struct qcom_rpm_reg *template; |
| 657 | const struct of_device_id *match; |
Axel Lin | aad615c | 2014-09-24 17:45:25 +0800 | [diff] [blame] | 658 | struct regulator_config config = { }; |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 659 | struct regulator_dev *rdev; |
| 660 | struct qcom_rpm_reg *vreg; |
| 661 | const char *key; |
| 662 | u32 force_mode; |
| 663 | bool pwm; |
| 664 | u32 val; |
| 665 | int ret; |
| 666 | |
| 667 | match = of_match_device(rpm_of_match, &pdev->dev); |
| 668 | template = match->data; |
| 669 | |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 670 | vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL); |
| 671 | if (!vreg) { |
| 672 | dev_err(&pdev->dev, "failed to allocate vreg\n"); |
| 673 | return -ENOMEM; |
| 674 | } |
| 675 | memcpy(vreg, template, sizeof(*vreg)); |
| 676 | mutex_init(&vreg->lock); |
| 677 | vreg->dev = &pdev->dev; |
| 678 | vreg->desc.id = -1; |
| 679 | vreg->desc.owner = THIS_MODULE; |
| 680 | vreg->desc.type = REGULATOR_VOLTAGE; |
| 681 | vreg->desc.name = pdev->dev.of_node->name; |
Bjorn Andersson | 00cea31 | 2015-01-29 16:22:57 -0800 | [diff] [blame] | 682 | vreg->desc.supply_name = "vin"; |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 683 | |
| 684 | vreg->rpm = dev_get_drvdata(pdev->dev.parent); |
| 685 | if (!vreg->rpm) { |
| 686 | dev_err(&pdev->dev, "unable to retrieve handle to rpm\n"); |
| 687 | return -ENODEV; |
| 688 | } |
| 689 | |
Javier Martinez Canillas | 072e78b | 2014-11-10 14:43:53 +0100 | [diff] [blame] | 690 | initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node, |
| 691 | &vreg->desc); |
| 692 | if (!initdata) |
| 693 | return -EINVAL; |
| 694 | |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 695 | key = "reg"; |
| 696 | ret = of_property_read_u32(pdev->dev.of_node, key, &val); |
| 697 | if (ret) { |
| 698 | dev_err(&pdev->dev, "failed to read %s\n", key); |
| 699 | return ret; |
| 700 | } |
| 701 | vreg->resource = val; |
| 702 | |
| 703 | if ((vreg->parts->uV.mask || vreg->parts->mV.mask) && |
| 704 | (!initdata->constraints.min_uV || !initdata->constraints.max_uV)) { |
| 705 | dev_err(&pdev->dev, "no voltage specified for regulator\n"); |
| 706 | return -EINVAL; |
| 707 | } |
| 708 | |
| 709 | key = "bias-pull-down"; |
| 710 | if (of_property_read_bool(pdev->dev.of_node, key)) { |
| 711 | ret = rpm_reg_set(vreg, &vreg->parts->pd, 1); |
| 712 | if (ret) { |
| 713 | dev_err(&pdev->dev, "%s is invalid", key); |
| 714 | return ret; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | if (vreg->parts->freq.mask) { |
| 719 | ret = rpm_reg_of_parse_freq(&pdev->dev, vreg); |
| 720 | if (ret < 0) |
| 721 | return ret; |
| 722 | } |
| 723 | |
| 724 | if (vreg->parts->pm.mask) { |
| 725 | key = "qcom,power-mode-hysteretic"; |
| 726 | pwm = !of_property_read_bool(pdev->dev.of_node, key); |
| 727 | |
| 728 | ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm); |
| 729 | if (ret) { |
| 730 | dev_err(&pdev->dev, "failed to set power mode\n"); |
| 731 | return ret; |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | if (vreg->parts->fm.mask) { |
| 736 | force_mode = -1; |
| 737 | |
| 738 | key = "qcom,force-mode"; |
| 739 | ret = of_property_read_u32(pdev->dev.of_node, key, &val); |
| 740 | if (ret == -EINVAL) { |
| 741 | val = QCOM_RPM_FORCE_MODE_NONE; |
| 742 | } else if (ret < 0) { |
| 743 | dev_err(&pdev->dev, "failed to read %s\n", key); |
| 744 | return ret; |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * If force-mode is encoded as 2 bits then the |
| 749 | * possible register values are: |
| 750 | * NONE, LPM, HPM |
| 751 | * otherwise: |
| 752 | * NONE, LPM, AUTO, HPM, BYPASS |
| 753 | */ |
| 754 | switch (val) { |
| 755 | case QCOM_RPM_FORCE_MODE_NONE: |
| 756 | force_mode = 0; |
| 757 | break; |
| 758 | case QCOM_RPM_FORCE_MODE_LPM: |
| 759 | force_mode = 1; |
| 760 | break; |
| 761 | case QCOM_RPM_FORCE_MODE_HPM: |
| 762 | if (FORCE_MODE_IS_2_BITS(vreg)) |
| 763 | force_mode = 2; |
| 764 | else |
| 765 | force_mode = 3; |
| 766 | break; |
| 767 | case QCOM_RPM_FORCE_MODE_AUTO: |
| 768 | if (vreg->supports_force_mode_auto) |
| 769 | force_mode = 2; |
| 770 | break; |
| 771 | case QCOM_RPM_FORCE_MODE_BYPASS: |
| 772 | if (vreg->supports_force_mode_bypass) |
| 773 | force_mode = 4; |
| 774 | break; |
| 775 | } |
| 776 | |
Dan Carpenter | a412ec2 | 2015-01-28 22:15:31 +0300 | [diff] [blame] | 777 | if (force_mode == -1) { |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 778 | dev_err(&pdev->dev, "invalid force mode\n"); |
| 779 | return -EINVAL; |
| 780 | } |
| 781 | |
| 782 | ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode); |
| 783 | if (ret) { |
| 784 | dev_err(&pdev->dev, "failed to set force mode\n"); |
| 785 | return ret; |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | config.dev = &pdev->dev; |
| 790 | config.init_data = initdata; |
| 791 | config.driver_data = vreg; |
| 792 | config.of_node = pdev->dev.of_node; |
| 793 | rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config); |
| 794 | if (IS_ERR(rdev)) { |
| 795 | dev_err(&pdev->dev, "can't register regulator\n"); |
| 796 | return PTR_ERR(rdev); |
| 797 | } |
| 798 | |
| 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | static struct platform_driver rpm_reg_driver = { |
| 803 | .probe = rpm_reg_probe, |
| 804 | .driver = { |
| 805 | .name = "qcom_rpm_reg", |
Bjorn Andersson | 2720386 | 2014-09-22 16:25:29 -0700 | [diff] [blame] | 806 | .of_match_table = of_match_ptr(rpm_of_match), |
| 807 | }, |
| 808 | }; |
| 809 | |
| 810 | static int __init rpm_reg_init(void) |
| 811 | { |
| 812 | return platform_driver_register(&rpm_reg_driver); |
| 813 | } |
| 814 | subsys_initcall(rpm_reg_init); |
| 815 | |
| 816 | static void __exit rpm_reg_exit(void) |
| 817 | { |
| 818 | platform_driver_unregister(&rpm_reg_driver); |
| 819 | } |
| 820 | module_exit(rpm_reg_exit) |
| 821 | |
| 822 | MODULE_DESCRIPTION("Qualcomm RPM regulator driver"); |
| 823 | MODULE_LICENSE("GPL v2"); |