1 /* 2 * Copyright (C) 2015 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <errno.h> 11 #include <irq-generic.h> 12 #include <power/rk8xx_pmic.h> 13 #include <power/pmic.h> 14 15 DECLARE_GLOBAL_DATA_PTR; 16 17 #if defined(CONFIG_IRQ) && !defined(CONFIG_SPL_BUILD) 18 /* RK805 */ 19 static const struct virq_reg rk805_irqs[] = { 20 [RK8XX_IRQ_PWRON_FALL] = { 21 .mask = RK805_IRQ_PWRON_FALL_MSK, 22 .reg_offset = 0, 23 }, 24 [RK8XX_IRQ_PWRON_RISE] = { 25 .mask = RK805_IRQ_PWRON_RISE_MSK, 26 .reg_offset = 0, 27 }, 28 }; 29 30 static struct virq_chip rk805_irq_chip = { 31 .status_base = RK805_INT_STS_REG, 32 .mask_base = RK805_INT_MSK_REG, 33 .num_regs = 1, 34 .i2c_read = pmic_reg_read, 35 .i2c_write = pmic_reg_write, 36 .irqs = rk805_irqs, 37 .num_irqs = ARRAY_SIZE(rk805_irqs), 38 }; 39 40 /* RK808 */ 41 static const struct virq_reg rk808_irqs[] = { 42 [RK8XX_IRQ_PLUG_OUT] = { 43 .mask = RK808_IRQ_PLUG_OUT_MSK, 44 .reg_offset = 1, 45 }, 46 }; 47 48 static struct virq_chip rk808_irq_chip = { 49 .status_base = RK808_INT_STS_REG1, 50 .mask_base = RK808_INT_MSK_REG1, 51 .irq_reg_stride = 2, 52 .num_regs = 2, 53 .i2c_read = pmic_reg_read, 54 .i2c_write = pmic_reg_write, 55 .irqs = rk808_irqs, 56 .num_irqs = ARRAY_SIZE(rk808_irqs), 57 }; 58 59 /* RK816 */ 60 static const struct virq_reg rk816_irqs[] = { 61 [RK8XX_IRQ_PWRON_FALL] = { 62 .mask = RK816_IRQ_PWRON_FALL_MSK, 63 .reg_offset = 0, 64 }, 65 [RK8XX_IRQ_PWRON_RISE] = { 66 .mask = RK816_IRQ_PWRON_RISE_MSK, 67 .reg_offset = 0, 68 }, 69 [RK8XX_IRQ_PLUG_OUT] = { 70 .mask = RK816_IRQ_PLUG_OUT_MSK, 71 .reg_offset = 2, 72 }, 73 [RK8XX_IRQ_CHG_OK] = { 74 .mask = RK816_IRQ_CHR_OK_MSK, 75 .reg_offset = 2, 76 }, 77 }; 78 79 static struct virq_chip rk816_irq_chip = { 80 .status_base = RK816_INT_STS_REG1, 81 .mask_base = RK816_INT_MSK_REG1, 82 .irq_unalign_reg_idx = 1, /* idx <= 1, stride = 3 */ 83 .irq_unalign_reg_stride = 3, 84 .irq_reg_stride = 2, /* idx > 1, stride = 2 */ 85 .num_regs = 3, 86 .i2c_read = pmic_reg_read, 87 .i2c_write = pmic_reg_write, 88 .irqs = rk816_irqs, 89 .num_irqs = ARRAY_SIZE(rk816_irqs), 90 }; 91 92 /* RK818 */ 93 static const struct virq_reg rk818_irqs[] = { 94 [RK8XX_IRQ_PLUG_OUT] = { 95 .mask = RK818_IRQ_PLUG_OUT_MSK, 96 .reg_offset = 1, 97 }, 98 [RK8XX_IRQ_CHG_OK] = { 99 .mask = RK818_IRQ_CHR_OK_MSK, 100 .reg_offset = 1, 101 }, 102 }; 103 104 static struct virq_chip rk818_irq_chip = { 105 .status_base = RK818_INT_STS_REG1, 106 .mask_base = RK818_INT_MSK_REG1, 107 .irq_reg_stride = 2, 108 .num_regs = 2, 109 .i2c_read = pmic_reg_read, 110 .i2c_write = pmic_reg_write, 111 .irqs = rk818_irqs, 112 .num_irqs = ARRAY_SIZE(rk818_irqs), 113 }; 114 115 /* RK817/RK809 */ 116 static const struct virq_reg rk817_irqs[] = { 117 [RK8XX_IRQ_PWRON_FALL] = { 118 .mask = RK817_IRQ_PWRON_FALL_MSK, 119 .reg_offset = 0, 120 }, 121 [RK8XX_IRQ_PWRON_RISE] = { 122 .mask = RK817_IRQ_PWRON_RISE_MSK, 123 .reg_offset = 0, 124 }, 125 [RK8XX_IRQ_PLUG_OUT] = { 126 .mask = RK817_IRQ_PLUG_OUT_MSK, 127 .reg_offset = 1, 128 }, 129 [RK8XX_IRQ_PLUG_IN] = { 130 .mask = RK817_IRQ_PLUG_IN_MSK, 131 .reg_offset = 1, 132 }, 133 }; 134 135 static struct virq_chip rk817_irq_chip = { 136 .status_base = RK817_INT_STS_REG0, 137 .mask_base = RK817_INT_MSK_REG0, 138 .irq_reg_stride = 2, 139 .num_regs = 3, 140 .i2c_read = pmic_reg_read, 141 .i2c_write = pmic_reg_write, 142 .irqs = rk817_irqs, 143 .num_irqs = ARRAY_SIZE(rk817_irqs), 144 }; 145 #endif 146 147 static struct reg_data rk817_init_reg[] = { 148 /* enable the under-voltage protection, 149 * the under-voltage protection will shutdown the LDO3 and reset the PMIC 150 */ 151 { RK817_BUCK4_CMIN, 0x60, 0x60}, 152 /* 153 * Only when system suspend while U-Boot charge needs this config support 154 */ 155 #ifdef CONFIG_DM_CHARGE_DISPLAY 156 /* Set pmic_sleep as sleep function */ 157 { RK817_PMIC_SYS_CFG3, 0x08, 0x18 }, 158 /* Set pmic_int active low */ 159 { RK817_GPIO_INT_CFG, 0x00, 0x02 }, 160 #endif 161 }; 162 163 static struct reg_data rk818_init_current[] = { 164 { REG_USB_CTRL, 0x07, 0x0f}, /* 2A */ 165 }; 166 167 static const struct pmic_child_info pmic_children_info[] = { 168 { .prefix = "DCDC", .driver = "rk8xx_buck"}, 169 { .prefix = "LDO", .driver = "rk8xx_ldo"}, 170 { .prefix = "SWITCH", .driver = "rk8xx_switch"}, 171 { }, 172 }; 173 174 static const struct pmic_child_info power_key_info[] = { 175 { .prefix = "pwrkey", .driver = "rk8xx_pwrkey"}, 176 { }, 177 }; 178 179 static const struct pmic_child_info rtc_info[] = { 180 { .prefix = "rtc", .driver = "rk8xx_rtc"}, 181 { }, 182 }; 183 184 static const struct pmic_child_info fuel_gauge_info[] = { 185 { .prefix = "battery", .driver = "rk818_fg"}, 186 { .prefix = "battery", .driver = "rk817_fg"}, 187 { .prefix = "battery", .driver = "rk816_fg"}, 188 { }, 189 }; 190 191 static const struct pmic_child_info rk817_codec_info[] = { 192 { .prefix = "codec", .driver = "rk817_codec"}, 193 { }, 194 }; 195 196 static int rk8xx_reg_count(struct udevice *dev) 197 { 198 struct rk8xx_priv *priv = dev_get_priv(dev); 199 200 switch (priv->variant) { 201 case RK809_ID: 202 case RK817_ID: 203 return RK817_NUM_OF_REGS; 204 default: 205 return RK808_NUM_OF_REGS; 206 } 207 } 208 209 static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff, 210 int len) 211 { 212 int ret; 213 214 ret = dm_i2c_write(dev, reg, buff, len); 215 if (ret) { 216 printf("%s: write reg 0x%02x failed, ret=%d\n", __func__, reg, ret); 217 return ret; 218 } 219 220 return 0; 221 } 222 223 static int rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len) 224 { 225 int ret; 226 227 ret = dm_i2c_read(dev, reg, buff, len); 228 if (ret) { 229 printf("%s: read reg 0x%02x failed, ret=%d\n", __func__, reg, ret); 230 return ret; 231 } 232 233 return 0; 234 } 235 236 static int rk8xx_shutdown(struct udevice *dev) 237 { 238 struct rk8xx_priv *priv = dev_get_priv(dev); 239 u8 val, dev_off, devctrl_reg; 240 int ret = 0; 241 242 switch (priv->variant) { 243 case RK808_ID: 244 devctrl_reg = REG_DEVCTRL; 245 dev_off = BIT(3); 246 break; 247 case RK805_ID: 248 case RK816_ID: 249 case RK818_ID: 250 devctrl_reg = REG_DEVCTRL; 251 dev_off = BIT(0); 252 break; 253 case RK809_ID: 254 case RK817_ID: 255 devctrl_reg = RK817_REG_SYS_CFG3; 256 dev_off = BIT(0); 257 break; 258 default: 259 printf("Unknown PMIC: RK%x\n", priv->variant); 260 return -EINVAL; 261 } 262 263 ret = dm_i2c_read(dev, devctrl_reg, &val, 1); 264 if (ret) { 265 printf("%s: read reg 0x%02x failed, ret=%d\n", 266 __func__, devctrl_reg, ret); 267 return ret; 268 } 269 270 val |= dev_off; 271 ret = dm_i2c_write(dev, devctrl_reg, &val, 1); 272 if (ret) { 273 printf("%s: write reg 0x%02x failed, ret=%d\n", 274 __func__, devctrl_reg, ret); 275 return ret; 276 } 277 278 return 0; 279 } 280 281 /* 282 * When system suspend during U-Boot charge, make sure the plugout event 283 * be able to wakeup cpu in wfi/wfe state. 284 */ 285 #ifdef CONFIG_DM_CHARGE_DISPLAY 286 static void rk8xx_plug_out_handler(int irq, void *data) 287 { 288 printf("Plug out interrupt\n"); 289 } 290 #endif 291 292 #if CONFIG_IS_ENABLED(PMIC_CHILDREN) 293 static int rk8xx_bind(struct udevice *dev) 294 { 295 ofnode regulators_node; 296 int children; 297 298 regulators_node = dev_read_subnode(dev, "regulators"); 299 if (!ofnode_valid(regulators_node)) { 300 debug("%s: %s regulators subnode not found!\n", __func__, 301 dev->name); 302 return -ENXIO; 303 } 304 305 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); 306 307 children = pmic_bind_children(dev, regulators_node, pmic_children_info); 308 if (!children) 309 debug("%s: %s - no child found\n", __func__, dev->name); 310 311 children = pmic_bind_children(dev, dev->node, power_key_info); 312 if (!children) 313 debug("%s: %s - no child found\n", __func__, dev->name); 314 315 children = pmic_bind_children(dev, dev->node, rtc_info); 316 if (!children) 317 debug("%s: %s - no child found\n", __func__, dev->name); 318 319 children = pmic_bind_children(dev, dev->node, fuel_gauge_info); 320 if (!children) 321 debug("%s: %s - no child found\n", __func__, dev->name); 322 323 children = pmic_bind_children(dev, dev->node, rk817_codec_info); 324 if (!children) 325 debug("%s: %s - no child found\n", __func__, dev->name); 326 327 /* Always return success for this device */ 328 return 0; 329 } 330 #endif 331 332 #if defined(CONFIG_IRQ) && !defined(CONFIG_SPL_BUILD) 333 static int rk8xx_ofdata_to_platdata(struct udevice *dev) 334 { 335 struct rk8xx_priv *rk8xx = dev_get_priv(dev); 336 u32 interrupt, phandle; 337 int ret; 338 339 phandle = dev_read_u32_default(dev, "interrupt-parent", -ENODATA); 340 if (phandle == -ENODATA) { 341 printf("Read 'interrupt-parent' failed, ret=%d\n", phandle); 342 return phandle; 343 } 344 345 ret = dev_read_u32_array(dev, "interrupts", &interrupt, 1); 346 if (ret) { 347 printf("Read 'interrupts' failed, ret=%d\n", ret); 348 return ret; 349 } 350 351 rk8xx->irq = phandle_gpio_to_irq(phandle, interrupt); 352 if (rk8xx->irq < 0) { 353 printf("Failed to request rk8xx irq, ret=%d\n", rk8xx->irq); 354 return rk8xx->irq; 355 } 356 357 return 0; 358 } 359 360 static int rk8xx_irq_chip_init(struct udevice *dev) 361 { 362 struct rk8xx_priv *priv = dev_get_priv(dev); 363 struct virq_chip *irq_chip = NULL; 364 int ret; 365 366 switch (priv->variant) { 367 case RK808_ID: 368 irq_chip = &rk808_irq_chip; 369 break; 370 case RK805_ID: 371 irq_chip = &rk805_irq_chip; 372 break; 373 case RK816_ID: 374 irq_chip = &rk816_irq_chip; 375 break; 376 case RK818_ID: 377 irq_chip = &rk818_irq_chip; 378 break; 379 case RK809_ID: 380 case RK817_ID: 381 irq_chip = &rk817_irq_chip; 382 break; 383 default: 384 return -EINVAL; 385 } 386 387 if (irq_chip) { 388 ret = virq_add_chip(dev, irq_chip, priv->irq); 389 if (ret) { 390 printf("Failed to add irqchip(irq=%d), ret=%d\n", 391 priv->irq, ret); 392 return ret; 393 } 394 395 priv->irq_chip = irq_chip; 396 397 #ifdef CONFIG_DM_CHARGE_DISPLAY 398 int irq; 399 400 irq = virq_to_irq(irq_chip, RK8XX_IRQ_PLUG_OUT); 401 if (irq < 0) { 402 printf("Failed to register plugout irq, ret=%d\n", irq); 403 return irq; 404 } 405 irq_install_handler(irq, rk8xx_plug_out_handler, dev); 406 irq_handler_enable_suspend_only(irq); 407 #endif 408 } 409 410 return 0; 411 } 412 #else 413 static inline int rk8xx_ofdata_to_platdata(struct udevice *dev) { return 0; } 414 static inline int rk8xx_irq_chip_init(struct udevice *dev) { return 0; } 415 #endif 416 417 static int rk8xx_probe(struct udevice *dev) 418 { 419 struct rk8xx_priv *priv = dev_get_priv(dev); 420 struct reg_data *init_current = NULL; 421 struct reg_data *init_data = NULL; 422 int init_current_num = 0; 423 int init_data_num = 0; 424 int ret = 0, i, show_variant; 425 uint8_t msb, lsb, id_msb, id_lsb; 426 uint8_t on_source = 0, off_source = 0; 427 uint8_t power_en0, power_en1, power_en2, power_en3; 428 uint8_t value; 429 430 /* read Chip variant */ 431 if (device_is_compatible(dev, "rockchip,rk817") || 432 device_is_compatible(dev, "rockchip,rk809")) { 433 id_msb = RK817_ID_MSB; 434 id_lsb = RK817_ID_LSB; 435 } else { 436 id_msb = ID_MSB; 437 id_lsb = ID_LSB; 438 } 439 440 ret = rk8xx_read(dev, id_msb, &msb, 1); 441 if (ret) 442 return ret; 443 ret = rk8xx_read(dev, id_lsb, &lsb, 1); 444 if (ret) 445 return ret; 446 447 priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK; 448 show_variant = priv->variant; 449 switch (priv->variant) { 450 case RK808_ID: 451 show_variant = 0x808; /* RK808 hardware ID is 0 */ 452 break; 453 case RK805_ID: 454 case RK816_ID: 455 on_source = RK8XX_ON_SOURCE; 456 off_source = RK8XX_OFF_SOURCE; 457 break; 458 case RK818_ID: 459 on_source = RK8XX_ON_SOURCE; 460 off_source = RK8XX_OFF_SOURCE; 461 /* set current if no fuel gauge */ 462 if (!ofnode_valid(dev_read_subnode(dev, "battery"))) { 463 init_current = rk818_init_current; 464 init_current_num = ARRAY_SIZE(rk818_init_current); 465 } 466 break; 467 case RK809_ID: 468 case RK817_ID: 469 on_source = RK817_ON_SOURCE; 470 off_source = RK817_OFF_SOURCE; 471 init_data = rk817_init_reg; 472 init_data_num = ARRAY_SIZE(rk817_init_reg); 473 power_en0 = pmic_reg_read(dev, RK817_POWER_EN0); 474 power_en1 = pmic_reg_read(dev, RK817_POWER_EN1); 475 power_en2 = pmic_reg_read(dev, RK817_POWER_EN2); 476 power_en3 = pmic_reg_read(dev, RK817_POWER_EN3); 477 478 value = (power_en0 & 0x0f) | ((power_en1 & 0x0f) << 4); 479 pmic_reg_write(dev, RK817_POWER_EN_SAVE0, value); 480 value = (power_en2 & 0x0f) | ((power_en3 & 0x0f) << 4); 481 pmic_reg_write(dev, RK817_POWER_EN_SAVE1, value); 482 break; 483 default: 484 printf("Unknown PMIC: RK%x!!\n", priv->variant); 485 return -EINVAL; 486 } 487 488 /* common init */ 489 for (i = 0; i < init_data_num; i++) { 490 ret = pmic_clrsetbits(dev, 491 init_data[i].reg, 492 init_data[i].mask, 493 init_data[i].val); 494 if (ret < 0) { 495 printf("%s: i2c set reg 0x%x failed, ret=%d\n", 496 __func__, init_data[i].reg, ret); 497 } 498 } 499 500 /* current init */ 501 for (i = 0; i < init_current_num; i++) { 502 ret = pmic_clrsetbits(dev, 503 init_current[i].reg, 504 init_current[i].mask, 505 init_current[i].val); 506 if (ret < 0) { 507 printf("%s: i2c set reg 0x%x failed, ret=%d\n", 508 __func__, init_current[i].reg, ret); 509 } 510 } 511 512 printf("PMIC: RK%x ", show_variant); 513 514 if (on_source && off_source) 515 printf("(on=0x%02x, off=0x%02x)", 516 pmic_reg_read(dev, on_source), 517 pmic_reg_read(dev, off_source)); 518 printf("\n"); 519 520 ret = rk8xx_irq_chip_init(dev); 521 if (ret) { 522 printf("IRQ chip initial failed\n"); 523 return ret; 524 } 525 526 return 0; 527 } 528 529 static struct dm_pmic_ops rk8xx_ops = { 530 .reg_count = rk8xx_reg_count, 531 .read = rk8xx_read, 532 .write = rk8xx_write, 533 .shutdown = rk8xx_shutdown, 534 }; 535 536 static const struct udevice_id rk8xx_ids[] = { 537 { .compatible = "rockchip,rk805" }, 538 { .compatible = "rockchip,rk808" }, 539 { .compatible = "rockchip,rk809" }, 540 { .compatible = "rockchip,rk816" }, 541 { .compatible = "rockchip,rk817" }, 542 { .compatible = "rockchip,rk818" }, 543 { } 544 }; 545 546 U_BOOT_DRIVER(pmic_rk8xx) = { 547 .name = "rk8xx pmic", 548 .id = UCLASS_PMIC, 549 .of_match = rk8xx_ids, 550 #if CONFIG_IS_ENABLED(PMIC_CHILDREN) 551 .bind = rk8xx_bind, 552 #endif 553 .ofdata_to_platdata = rk8xx_ofdata_to_platdata, 554 .priv_auto_alloc_size = sizeof(struct rk8xx_priv), 555 .probe = rk8xx_probe, 556 .ops = &rk8xx_ops, 557 }; 558