1 /* 2 * tps65910.c -- TI TPS6591x 3 * 4 * Copyright 2010 Texas Instruments Inc. 5 * 6 * Author: Graeme Gregory <gg@slimlogic.co.uk> 7 * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk> 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License as published by the 11 * Free Software Foundation; either version 2 of the License, or (at your 12 * option) any later version. 13 * 14 */ 15 16 #include <linux/module.h> 17 #include <linux/moduleparam.h> 18 #include <linux/init.h> 19 #include <linux/err.h> 20 #include <linux/slab.h> 21 #include <linux/i2c.h> 22 #include <linux/interrupt.h> 23 #include <linux/irq.h> 24 #include <linux/irqdomain.h> 25 #include <linux/mfd/core.h> 26 #include <linux/regmap.h> 27 #include <linux/mfd/tps65910.h> 28 #include <linux/of_device.h> 29 30 static struct resource rtc_resources[] = { 31 { 32 .start = TPS65910_IRQ_RTC_ALARM, 33 .end = TPS65910_IRQ_RTC_ALARM, 34 .flags = IORESOURCE_IRQ, 35 } 36 }; 37 38 static struct mfd_cell tps65910s[] = { 39 { 40 .name = "tps65910-gpio", 41 }, 42 { 43 .name = "tps65910-pmic", 44 }, 45 { 46 .name = "tps65910-rtc", 47 .num_resources = ARRAY_SIZE(rtc_resources), 48 .resources = &rtc_resources[0], 49 }, 50 { 51 .name = "tps65910-power", 52 }, 53 }; 54 55 56 static const struct regmap_irq tps65911_irqs[] = { 57 /* INT_STS */ 58 [TPS65911_IRQ_PWRHOLD_F] = { 59 .mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK, 60 .reg_offset = 0, 61 }, 62 [TPS65911_IRQ_VBAT_VMHI] = { 63 .mask = INT_MSK_VMBHI_IT_MSK_MASK, 64 .reg_offset = 0, 65 }, 66 [TPS65911_IRQ_PWRON] = { 67 .mask = INT_MSK_PWRON_IT_MSK_MASK, 68 .reg_offset = 0, 69 }, 70 [TPS65911_IRQ_PWRON_LP] = { 71 .mask = INT_MSK_PWRON_LP_IT_MSK_MASK, 72 .reg_offset = 0, 73 }, 74 [TPS65911_IRQ_PWRHOLD_R] = { 75 .mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK, 76 .reg_offset = 0, 77 }, 78 [TPS65911_IRQ_HOTDIE] = { 79 .mask = INT_MSK_HOTDIE_IT_MSK_MASK, 80 .reg_offset = 0, 81 }, 82 [TPS65911_IRQ_RTC_ALARM] = { 83 .mask = INT_MSK_RTC_ALARM_IT_MSK_MASK, 84 .reg_offset = 0, 85 }, 86 [TPS65911_IRQ_RTC_PERIOD] = { 87 .mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK, 88 .reg_offset = 0, 89 }, 90 91 /* INT_STS2 */ 92 [TPS65911_IRQ_GPIO0_R] = { 93 .mask = INT_MSK2_GPIO0_R_IT_MSK_MASK, 94 .reg_offset = 1, 95 }, 96 [TPS65911_IRQ_GPIO0_F] = { 97 .mask = INT_MSK2_GPIO0_F_IT_MSK_MASK, 98 .reg_offset = 1, 99 }, 100 [TPS65911_IRQ_GPIO1_R] = { 101 .mask = INT_MSK2_GPIO1_R_IT_MSK_MASK, 102 .reg_offset = 1, 103 }, 104 [TPS65911_IRQ_GPIO1_F] = { 105 .mask = INT_MSK2_GPIO1_F_IT_MSK_MASK, 106 .reg_offset = 1, 107 }, 108 [TPS65911_IRQ_GPIO2_R] = { 109 .mask = INT_MSK2_GPIO2_R_IT_MSK_MASK, 110 .reg_offset = 1, 111 }, 112 [TPS65911_IRQ_GPIO2_F] = { 113 .mask = INT_MSK2_GPIO2_F_IT_MSK_MASK, 114 .reg_offset = 1, 115 }, 116 [TPS65911_IRQ_GPIO3_R] = { 117 .mask = INT_MSK2_GPIO3_R_IT_MSK_MASK, 118 .reg_offset = 1, 119 }, 120 [TPS65911_IRQ_GPIO3_F] = { 121 .mask = INT_MSK2_GPIO3_F_IT_MSK_MASK, 122 .reg_offset = 1, 123 }, 124 125 /* INT_STS2 */ 126 [TPS65911_IRQ_GPIO4_R] = { 127 .mask = INT_MSK3_GPIO4_R_IT_MSK_MASK, 128 .reg_offset = 2, 129 }, 130 [TPS65911_IRQ_GPIO4_F] = { 131 .mask = INT_MSK3_GPIO4_F_IT_MSK_MASK, 132 .reg_offset = 2, 133 }, 134 [TPS65911_IRQ_GPIO5_R] = { 135 .mask = INT_MSK3_GPIO5_R_IT_MSK_MASK, 136 .reg_offset = 2, 137 }, 138 [TPS65911_IRQ_GPIO5_F] = { 139 .mask = INT_MSK3_GPIO5_F_IT_MSK_MASK, 140 .reg_offset = 2, 141 }, 142 [TPS65911_IRQ_WTCHDG] = { 143 .mask = INT_MSK3_WTCHDG_IT_MSK_MASK, 144 .reg_offset = 2, 145 }, 146 [TPS65911_IRQ_VMBCH2_H] = { 147 .mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK, 148 .reg_offset = 2, 149 }, 150 [TPS65911_IRQ_VMBCH2_L] = { 151 .mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK, 152 .reg_offset = 2, 153 }, 154 [TPS65911_IRQ_PWRDN] = { 155 .mask = INT_MSK3_PWRDN_IT_MSK_MASK, 156 .reg_offset = 2, 157 }, 158 }; 159 160 static const struct regmap_irq tps65910_irqs[] = { 161 /* INT_STS */ 162 [TPS65910_IRQ_VBAT_VMBDCH] = { 163 .mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK, 164 .reg_offset = 0, 165 }, 166 [TPS65910_IRQ_VBAT_VMHI] = { 167 .mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK, 168 .reg_offset = 0, 169 }, 170 [TPS65910_IRQ_PWRON] = { 171 .mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK, 172 .reg_offset = 0, 173 }, 174 [TPS65910_IRQ_PWRON_LP] = { 175 .mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK, 176 .reg_offset = 0, 177 }, 178 [TPS65910_IRQ_PWRHOLD] = { 179 .mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK, 180 .reg_offset = 0, 181 }, 182 [TPS65910_IRQ_HOTDIE] = { 183 .mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK, 184 .reg_offset = 0, 185 }, 186 [TPS65910_IRQ_RTC_ALARM] = { 187 .mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK, 188 .reg_offset = 0, 189 }, 190 [TPS65910_IRQ_RTC_PERIOD] = { 191 .mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK, 192 .reg_offset = 0, 193 }, 194 195 /* INT_STS2 */ 196 [TPS65910_IRQ_GPIO_R] = { 197 .mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK, 198 .reg_offset = 1, 199 }, 200 [TPS65910_IRQ_GPIO_F] = { 201 .mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK, 202 .reg_offset = 1, 203 }, 204 }; 205 206 static struct regmap_irq_chip tps65911_irq_chip = { 207 .name = "tps65910", 208 .irqs = tps65911_irqs, 209 .num_irqs = ARRAY_SIZE(tps65911_irqs), 210 .num_regs = 3, 211 .irq_reg_stride = 2, 212 .status_base = TPS65910_INT_STS, 213 .mask_base = TPS65910_INT_MSK, 214 .ack_base = TPS65910_INT_STS, 215 }; 216 217 static struct regmap_irq_chip tps65910_irq_chip = { 218 .name = "tps65910", 219 .irqs = tps65910_irqs, 220 .num_irqs = ARRAY_SIZE(tps65910_irqs), 221 .num_regs = 2, 222 .irq_reg_stride = 2, 223 .status_base = TPS65910_INT_STS, 224 .mask_base = TPS65910_INT_MSK, 225 .ack_base = TPS65910_INT_STS, 226 }; 227 228 static int tps65910_irq_init(struct tps65910 *tps65910, int irq, 229 struct tps65910_platform_data *pdata) 230 { 231 int ret = 0; 232 static struct regmap_irq_chip *tps6591x_irqs_chip; 233 234 if (!irq) { 235 dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n"); 236 return -EINVAL; 237 } 238 239 if (!pdata) { 240 dev_warn(tps65910->dev, "No interrupt support, no pdata\n"); 241 return -EINVAL; 242 } 243 244 switch (tps65910_chip_id(tps65910)) { 245 case TPS65910: 246 tps6591x_irqs_chip = &tps65910_irq_chip; 247 break; 248 case TPS65911: 249 tps6591x_irqs_chip = &tps65911_irq_chip; 250 break; 251 } 252 253 tps65910->chip_irq = irq; 254 ret = regmap_add_irq_chip(tps65910->regmap, tps65910->chip_irq, 255 IRQF_ONESHOT, pdata->irq_base, 256 tps6591x_irqs_chip, &tps65910->irq_data); 257 if (ret < 0) 258 dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret); 259 return ret; 260 } 261 262 static int tps65910_irq_exit(struct tps65910 *tps65910) 263 { 264 if (tps65910->chip_irq > 0) 265 regmap_del_irq_chip(tps65910->chip_irq, tps65910->irq_data); 266 return 0; 267 } 268 269 static bool is_volatile_reg(struct device *dev, unsigned int reg) 270 { 271 struct tps65910 *tps65910 = dev_get_drvdata(dev); 272 273 /* 274 * Caching all regulator registers. 275 * All regualator register address range is same for 276 * TPS65910 and TPS65911 277 */ 278 if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) { 279 /* Check for non-existing register */ 280 if (tps65910_chip_id(tps65910) == TPS65910) 281 if ((reg == TPS65911_VDDCTRL_OP) || 282 (reg == TPS65911_VDDCTRL_SR)) 283 return true; 284 return false; 285 } 286 return true; 287 } 288 289 static const struct regmap_config tps65910_regmap_config = { 290 .reg_bits = 8, 291 .val_bits = 8, 292 .volatile_reg = is_volatile_reg, 293 .max_register = TPS65910_MAX_REGISTER - 1, 294 .cache_type = REGCACHE_RBTREE, 295 }; 296 297 static int tps65910_ck32k_init(struct tps65910 *tps65910, 298 struct tps65910_board *pmic_pdata) 299 { 300 int ret; 301 302 if (!pmic_pdata->en_ck32k_xtal) 303 return 0; 304 305 ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL, 306 DEVCTRL_CK32K_CTRL_MASK); 307 if (ret < 0) { 308 dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret); 309 return ret; 310 } 311 312 return 0; 313 } 314 315 static int tps65910_sleepinit(struct tps65910 *tps65910, 316 struct tps65910_board *pmic_pdata) 317 { 318 struct device *dev = NULL; 319 int ret = 0; 320 321 dev = tps65910->dev; 322 323 if (!pmic_pdata->en_dev_slp) 324 return 0; 325 326 /* enabling SLEEP device state */ 327 ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL, 328 DEVCTRL_DEV_SLP_MASK); 329 if (ret < 0) { 330 dev_err(dev, "set dev_slp failed: %d\n", ret); 331 goto err_sleep_init; 332 } 333 334 /* Return if there is no sleep keepon data. */ 335 if (!pmic_pdata->slp_keepon) 336 return 0; 337 338 if (pmic_pdata->slp_keepon->therm_keepon) { 339 ret = tps65910_reg_set_bits(tps65910, 340 TPS65910_SLEEP_KEEP_RES_ON, 341 SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK); 342 if (ret < 0) { 343 dev_err(dev, "set therm_keepon failed: %d\n", ret); 344 goto disable_dev_slp; 345 } 346 } 347 348 if (pmic_pdata->slp_keepon->clkout32k_keepon) { 349 ret = tps65910_reg_set_bits(tps65910, 350 TPS65910_SLEEP_KEEP_RES_ON, 351 SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK); 352 if (ret < 0) { 353 dev_err(dev, "set clkout32k_keepon failed: %d\n", ret); 354 goto disable_dev_slp; 355 } 356 } 357 358 if (pmic_pdata->slp_keepon->i2chs_keepon) { 359 ret = tps65910_reg_set_bits(tps65910, 360 TPS65910_SLEEP_KEEP_RES_ON, 361 SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK); 362 if (ret < 0) { 363 dev_err(dev, "set i2chs_keepon failed: %d\n", ret); 364 goto disable_dev_slp; 365 } 366 } 367 368 return 0; 369 370 disable_dev_slp: 371 tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL, 372 DEVCTRL_DEV_SLP_MASK); 373 374 err_sleep_init: 375 return ret; 376 } 377 378 #ifdef CONFIG_OF 379 static struct of_device_id tps65910_of_match[] = { 380 { .compatible = "ti,tps65910", .data = (void *)TPS65910}, 381 { .compatible = "ti,tps65911", .data = (void *)TPS65911}, 382 { }, 383 }; 384 MODULE_DEVICE_TABLE(of, tps65910_of_match); 385 386 static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, 387 int *chip_id) 388 { 389 struct device_node *np = client->dev.of_node; 390 struct tps65910_board *board_info; 391 unsigned int prop; 392 const struct of_device_id *match; 393 int ret = 0; 394 395 match = of_match_device(tps65910_of_match, &client->dev); 396 if (!match) { 397 dev_err(&client->dev, "Failed to find matching dt id\n"); 398 return NULL; 399 } 400 401 *chip_id = (int)match->data; 402 403 board_info = devm_kzalloc(&client->dev, sizeof(*board_info), 404 GFP_KERNEL); 405 if (!board_info) { 406 dev_err(&client->dev, "Failed to allocate pdata\n"); 407 return NULL; 408 } 409 410 ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop); 411 if (!ret) 412 board_info->vmbch_threshold = prop; 413 else if (*chip_id == TPS65911) 414 dev_warn(&client->dev, "VMBCH-Threshold not specified"); 415 416 ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop); 417 if (!ret) 418 board_info->vmbch2_threshold = prop; 419 else if (*chip_id == TPS65911) 420 dev_warn(&client->dev, "VMBCH2-Threshold not specified"); 421 422 prop = of_property_read_bool(np, "ti,en-ck32k-xtal"); 423 board_info->en_ck32k_xtal = prop; 424 425 board_info->irq = client->irq; 426 board_info->irq_base = -1; 427 board_info->pm_off = of_property_read_bool(np, 428 "ti,system-power-controller"); 429 430 return board_info; 431 } 432 #else 433 static inline 434 struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, 435 int *chip_id) 436 { 437 return NULL; 438 } 439 #endif 440 441 static struct i2c_client *tps65910_i2c_client; 442 static void tps65910_power_off(void) 443 { 444 struct tps65910 *tps65910; 445 446 tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev); 447 448 if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL, 449 DEVCTRL_PWR_OFF_MASK) < 0) 450 return; 451 452 tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL, 453 DEVCTRL_DEV_ON_MASK); 454 } 455 456 static int tps65910_i2c_probe(struct i2c_client *i2c, 457 const struct i2c_device_id *id) 458 { 459 struct tps65910 *tps65910; 460 struct tps65910_board *pmic_plat_data; 461 struct tps65910_board *of_pmic_plat_data = NULL; 462 struct tps65910_platform_data *init_data; 463 int ret = 0; 464 int chip_id = id->driver_data; 465 466 pmic_plat_data = dev_get_platdata(&i2c->dev); 467 468 if (!pmic_plat_data && i2c->dev.of_node) { 469 pmic_plat_data = tps65910_parse_dt(i2c, &chip_id); 470 of_pmic_plat_data = pmic_plat_data; 471 } 472 473 if (!pmic_plat_data) 474 return -EINVAL; 475 476 init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL); 477 if (init_data == NULL) 478 return -ENOMEM; 479 480 tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL); 481 if (tps65910 == NULL) 482 return -ENOMEM; 483 484 tps65910->of_plat_data = of_pmic_plat_data; 485 i2c_set_clientdata(i2c, tps65910); 486 tps65910->dev = &i2c->dev; 487 tps65910->i2c_client = i2c; 488 tps65910->id = chip_id; 489 490 tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config); 491 if (IS_ERR(tps65910->regmap)) { 492 ret = PTR_ERR(tps65910->regmap); 493 dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret); 494 return ret; 495 } 496 497 init_data->irq = pmic_plat_data->irq; 498 init_data->irq_base = pmic_plat_data->irq_base; 499 500 tps65910_irq_init(tps65910, init_data->irq, init_data); 501 tps65910_ck32k_init(tps65910, pmic_plat_data); 502 tps65910_sleepinit(tps65910, pmic_plat_data); 503 504 if (pmic_plat_data->pm_off && !pm_power_off) { 505 tps65910_i2c_client = i2c; 506 pm_power_off = tps65910_power_off; 507 } 508 509 ret = mfd_add_devices(tps65910->dev, -1, 510 tps65910s, ARRAY_SIZE(tps65910s), 511 NULL, 0, 512 regmap_irq_get_domain(tps65910->irq_data)); 513 if (ret < 0) { 514 dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret); 515 return ret; 516 } 517 518 return ret; 519 } 520 521 static int tps65910_i2c_remove(struct i2c_client *i2c) 522 { 523 struct tps65910 *tps65910 = i2c_get_clientdata(i2c); 524 525 tps65910_irq_exit(tps65910); 526 mfd_remove_devices(tps65910->dev); 527 528 return 0; 529 } 530 531 static const struct i2c_device_id tps65910_i2c_id[] = { 532 { "tps65910", TPS65910 }, 533 { "tps65911", TPS65911 }, 534 { } 535 }; 536 MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id); 537 538 539 static struct i2c_driver tps65910_i2c_driver = { 540 .driver = { 541 .name = "tps65910", 542 .owner = THIS_MODULE, 543 .of_match_table = of_match_ptr(tps65910_of_match), 544 }, 545 .probe = tps65910_i2c_probe, 546 .remove = tps65910_i2c_remove, 547 .id_table = tps65910_i2c_id, 548 }; 549 550 static int __init tps65910_i2c_init(void) 551 { 552 return i2c_add_driver(&tps65910_i2c_driver); 553 } 554 /* init early so consumer devices can complete system boot */ 555 subsys_initcall(tps65910_i2c_init); 556 557 static void __exit tps65910_i2c_exit(void) 558 { 559 i2c_del_driver(&tps65910_i2c_driver); 560 } 561 module_exit(tps65910_i2c_exit); 562 563 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); 564 MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>"); 565 MODULE_DESCRIPTION("TPS6591x chip family multi-function driver"); 566 MODULE_LICENSE("GPL"); 567