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 const struct pmic_child_info pmic_children_info[] = { 164 { .prefix = "DCDC", .driver = "rk8xx_buck"}, 165 { .prefix = "LDO", .driver = "rk8xx_ldo"}, 166 { .prefix = "SWITCH", .driver = "rk8xx_switch"}, 167 { }, 168 }; 169 170 static const struct pmic_child_info power_key_info[] = { 171 { .prefix = "pwrkey", .driver = "rk8xx_pwrkey"}, 172 { }, 173 }; 174 175 static const struct pmic_child_info rtc_info[] = { 176 { .prefix = "rtc", .driver = "rk8xx_rtc"}, 177 { }, 178 }; 179 180 static const struct pmic_child_info fuel_gauge_info[] = { 181 { .prefix = "battery", .driver = "rk818_fg"}, 182 { .prefix = "battery", .driver = "rk817_fg"}, 183 { .prefix = "battery", .driver = "rk816_fg"}, 184 { }, 185 }; 186 187 static const struct pmic_child_info rk817_codec_info[] = { 188 { .prefix = "codec", .driver = "rk817_codec"}, 189 { }, 190 }; 191 192 static int rk8xx_reg_count(struct udevice *dev) 193 { 194 return RK808_NUM_OF_REGS; 195 } 196 197 static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff, 198 int len) 199 { 200 int ret; 201 202 ret = dm_i2c_write(dev, reg, buff, len); 203 if (ret) { 204 printf("%s: write reg 0x%02x failed, ret=%d\n", __func__, reg, ret); 205 return ret; 206 } 207 208 return 0; 209 } 210 211 static int rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len) 212 { 213 int ret; 214 215 ret = dm_i2c_read(dev, reg, buff, len); 216 if (ret) { 217 printf("%s: read reg 0x%02x failed, ret=%d\n", __func__, reg, ret); 218 return ret; 219 } 220 221 return 0; 222 } 223 224 static int rk8xx_shutdown(struct udevice *dev) 225 { 226 struct rk8xx_priv *priv = dev_get_priv(dev); 227 u8 val, dev_off, devctrl_reg; 228 int ret = 0; 229 230 switch (priv->variant) { 231 case RK808_ID: 232 devctrl_reg = REG_DEVCTRL; 233 dev_off = BIT(3); 234 break; 235 case RK805_ID: 236 case RK816_ID: 237 case RK818_ID: 238 devctrl_reg = REG_DEVCTRL; 239 dev_off = BIT(0); 240 break; 241 case RK809_ID: 242 case RK817_ID: 243 devctrl_reg = RK817_REG_SYS_CFG3; 244 dev_off = BIT(0); 245 break; 246 default: 247 printf("Unknown PMIC: RK%x\n", priv->variant); 248 return -EINVAL; 249 } 250 251 ret = dm_i2c_read(dev, devctrl_reg, &val, 1); 252 if (ret) { 253 printf("%s: read reg 0x%02x failed, ret=%d\n", 254 __func__, devctrl_reg, ret); 255 return ret; 256 } 257 258 val |= dev_off; 259 ret = dm_i2c_write(dev, devctrl_reg, &val, 1); 260 if (ret) { 261 printf("%s: write reg 0x%02x failed, ret=%d\n", 262 __func__, devctrl_reg, ret); 263 return ret; 264 } 265 266 return 0; 267 } 268 269 /* 270 * When system suspend during U-Boot charge, make sure the plugout event 271 * be able to wakeup cpu in wfi/wfe state. 272 */ 273 #ifdef CONFIG_DM_CHARGE_DISPLAY 274 static void rk8xx_plug_out_handler(int irq, void *data) 275 { 276 printf("Plug out interrupt\n"); 277 } 278 #endif 279 280 #if CONFIG_IS_ENABLED(PMIC_CHILDREN) 281 static int rk8xx_bind(struct udevice *dev) 282 { 283 ofnode regulators_node; 284 int children; 285 286 regulators_node = dev_read_subnode(dev, "regulators"); 287 if (!ofnode_valid(regulators_node)) { 288 debug("%s: %s regulators subnode not found!\n", __func__, 289 dev->name); 290 return -ENXIO; 291 } 292 293 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); 294 295 children = pmic_bind_children(dev, regulators_node, pmic_children_info); 296 if (!children) 297 debug("%s: %s - no child found\n", __func__, dev->name); 298 299 children = pmic_bind_children(dev, dev->node, power_key_info); 300 if (!children) 301 debug("%s: %s - no child found\n", __func__, dev->name); 302 303 children = pmic_bind_children(dev, dev->node, rtc_info); 304 if (!children) 305 debug("%s: %s - no child found\n", __func__, dev->name); 306 307 children = pmic_bind_children(dev, dev->node, fuel_gauge_info); 308 if (!children) 309 debug("%s: %s - no child found\n", __func__, dev->name); 310 311 children = pmic_bind_children(dev, dev->node, rk817_codec_info); 312 if (!children) 313 debug("%s: %s - no child found\n", __func__, dev->name); 314 315 /* Always return success for this device */ 316 return 0; 317 } 318 #endif 319 320 #if defined(CONFIG_IRQ) && !defined(CONFIG_SPL_BUILD) 321 static int rk8xx_ofdata_to_platdata(struct udevice *dev) 322 { 323 struct rk8xx_priv *rk8xx = dev_get_priv(dev); 324 u32 interrupt, phandle; 325 int ret; 326 327 phandle = dev_read_u32_default(dev, "interrupt-parent", -ENODATA); 328 if (phandle == -ENODATA) { 329 printf("Read 'interrupt-parent' failed, ret=%d\n", phandle); 330 return phandle; 331 } 332 333 ret = dev_read_u32_array(dev, "interrupts", &interrupt, 1); 334 if (ret) { 335 printf("Read 'interrupts' failed, ret=%d\n", ret); 336 return ret; 337 } 338 339 rk8xx->irq = phandle_gpio_to_irq(phandle, interrupt); 340 if (rk8xx->irq < 0) { 341 printf("Failed to request rk8xx irq, ret=%d\n", rk8xx->irq); 342 return rk8xx->irq; 343 } 344 345 return 0; 346 } 347 348 static int rk8xx_irq_chip_init(struct udevice *dev) 349 { 350 struct rk8xx_priv *priv = dev_get_priv(dev); 351 struct virq_chip *irq_chip = NULL; 352 int ret; 353 354 switch (priv->variant) { 355 case RK808_ID: 356 irq_chip = &rk808_irq_chip; 357 break; 358 case RK805_ID: 359 irq_chip = &rk805_irq_chip; 360 break; 361 case RK816_ID: 362 irq_chip = &rk816_irq_chip; 363 break; 364 case RK818_ID: 365 irq_chip = &rk818_irq_chip; 366 break; 367 case RK809_ID: 368 case RK817_ID: 369 irq_chip = &rk817_irq_chip; 370 break; 371 default: 372 return -EINVAL; 373 } 374 375 if (irq_chip) { 376 ret = virq_add_chip(dev, irq_chip, priv->irq); 377 if (ret) { 378 printf("Failed to add irqchip(irq=%d), ret=%d\n", 379 priv->irq, ret); 380 return ret; 381 } 382 383 priv->irq_chip = irq_chip; 384 385 #ifdef CONFIG_DM_CHARGE_DISPLAY 386 int irq; 387 388 irq = virq_to_irq(irq_chip, RK8XX_IRQ_PLUG_OUT); 389 if (irq < 0) { 390 printf("Failed to register plugout irq, ret=%d\n", irq); 391 return irq; 392 } 393 irq_install_handler(irq, rk8xx_plug_out_handler, dev); 394 irq_handler_enable_suspend_only(irq); 395 #endif 396 } 397 398 return 0; 399 } 400 #else 401 static inline int rk8xx_ofdata_to_platdata(struct udevice *dev) { return 0; } 402 static inline int rk8xx_irq_chip_init(struct udevice *dev) { return 0; } 403 #endif 404 405 static int rk8xx_probe(struct udevice *dev) 406 { 407 struct rk8xx_priv *priv = dev_get_priv(dev); 408 struct reg_data *init_data = NULL; 409 int init_data_num = 0; 410 int ret = 0, i, show_variant; 411 uint8_t msb, lsb, id_msb, id_lsb; 412 uint8_t on_source = 0, off_source = 0; 413 uint8_t power_en0, power_en1, power_en2, power_en3; 414 uint8_t value; 415 416 /* read Chip variant */ 417 if (device_is_compatible(dev, "rockchip,rk817") || 418 device_is_compatible(dev, "rockchip,rk809")) { 419 id_msb = RK817_ID_MSB; 420 id_lsb = RK817_ID_LSB; 421 } else { 422 id_msb = ID_MSB; 423 id_lsb = ID_LSB; 424 } 425 426 ret = rk8xx_read(dev, id_msb, &msb, 1); 427 if (ret) 428 return ret; 429 ret = rk8xx_read(dev, id_lsb, &lsb, 1); 430 if (ret) 431 return ret; 432 433 priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK; 434 show_variant = priv->variant; 435 switch (priv->variant) { 436 case RK808_ID: 437 show_variant = 0x808; /* RK808 hardware ID is 0 */ 438 break; 439 case RK805_ID: 440 case RK816_ID: 441 case RK818_ID: 442 on_source = RK8XX_ON_SOURCE; 443 off_source = RK8XX_OFF_SOURCE; 444 break; 445 case RK809_ID: 446 case RK817_ID: 447 on_source = RK817_ON_SOURCE; 448 off_source = RK817_OFF_SOURCE; 449 init_data = rk817_init_reg; 450 init_data_num = ARRAY_SIZE(rk817_init_reg); 451 power_en0 = pmic_reg_read(dev, RK817_POWER_EN0); 452 power_en1 = pmic_reg_read(dev, RK817_POWER_EN1); 453 power_en2 = pmic_reg_read(dev, RK817_POWER_EN2); 454 power_en3 = pmic_reg_read(dev, RK817_POWER_EN3); 455 456 value = (power_en0 & 0x0f) | ((power_en1 & 0x0f) << 4); 457 pmic_reg_write(dev, RK817_POWER_EN_SAVE0, value); 458 value = (power_en2 & 0x0f) | ((power_en3 & 0x0f) << 4); 459 pmic_reg_write(dev, RK817_POWER_EN_SAVE1, value); 460 break; 461 default: 462 printf("Unknown PMIC: RK%x!!\n", priv->variant); 463 return -EINVAL; 464 } 465 466 for (i = 0; i < init_data_num; i++) { 467 ret = pmic_clrsetbits(dev, 468 init_data[i].reg, 469 init_data[i].mask, 470 init_data[i].val); 471 if (ret < 0) { 472 printf("%s: i2c set reg 0x%x failed, ret=%d\n", 473 __func__, init_data[i].reg, ret); 474 } 475 476 debug("%s: reg[0x%x] = 0x%x\n", __func__, init_data[i].reg, 477 pmic_reg_read(dev, init_data[i].reg)); 478 } 479 480 printf("PMIC: RK%x ", show_variant); 481 482 if (on_source && off_source) 483 printf("(on=0x%02x, off=0x%02x)", 484 pmic_reg_read(dev, on_source), 485 pmic_reg_read(dev, off_source)); 486 printf("\n"); 487 488 ret = rk8xx_irq_chip_init(dev); 489 if (ret) { 490 printf("IRQ chip initial failed\n"); 491 return ret; 492 } 493 494 return 0; 495 } 496 497 static struct dm_pmic_ops rk8xx_ops = { 498 .reg_count = rk8xx_reg_count, 499 .read = rk8xx_read, 500 .write = rk8xx_write, 501 .shutdown = rk8xx_shutdown, 502 }; 503 504 static const struct udevice_id rk8xx_ids[] = { 505 { .compatible = "rockchip,rk805" }, 506 { .compatible = "rockchip,rk808" }, 507 { .compatible = "rockchip,rk809" }, 508 { .compatible = "rockchip,rk816" }, 509 { .compatible = "rockchip,rk817" }, 510 { .compatible = "rockchip,rk818" }, 511 { } 512 }; 513 514 U_BOOT_DRIVER(pmic_rk8xx) = { 515 .name = "rk8xx pmic", 516 .id = UCLASS_PMIC, 517 .of_match = rk8xx_ids, 518 #if CONFIG_IS_ENABLED(PMIC_CHILDREN) 519 .bind = rk8xx_bind, 520 #endif 521 .ofdata_to_platdata = rk8xx_ofdata_to_platdata, 522 .priv_auto_alloc_size = sizeof(struct rk8xx_priv), 523 .probe = rk8xx_probe, 524 .ops = &rk8xx_ops, 525 }; 526