1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright 2017 IBM Corp. 4 */ 5 6 #include <linux/bitfield.h> 7 #include <linux/bitops.h> 8 #include <linux/debugfs.h> 9 #include <linux/device.h> 10 #include <linux/fs.h> 11 #include <linux/i2c.h> 12 #include <linux/jiffies.h> 13 #include <linux/leds.h> 14 #include <linux/module.h> 15 #include <linux/mutex.h> 16 #include <linux/of_device.h> 17 #include <linux/pmbus.h> 18 19 #include "pmbus.h" 20 21 #define CFFPS_FRU_CMD 0x9A 22 #define CFFPS_PN_CMD 0x9B 23 #define CFFPS_HEADER_CMD 0x9C 24 #define CFFPS_SN_CMD 0x9E 25 #define CFFPS_MAX_POWER_OUT_CMD 0xA7 26 #define CFFPS_CCIN_CMD 0xBD 27 #define CFFPS_FW_CMD 0xFA 28 #define CFFPS1_FW_NUM_BYTES 4 29 #define CFFPS2_FW_NUM_WORDS 3 30 #define CFFPS_SYS_CONFIG_CMD 0xDA 31 #define CFFPS_12VCS_VOUT_CMD 0xDE 32 33 #define CFFPS_INPUT_HISTORY_CMD 0xD6 34 #define CFFPS_INPUT_HISTORY_SIZE 100 35 36 #define CFFPS_CCIN_REVISION GENMASK(7, 0) 37 #define CFFPS_CCIN_REVISION_LEGACY 0xde 38 #define CFFPS_CCIN_VERSION GENMASK(15, 8) 39 #define CFFPS_CCIN_VERSION_1 0x2b 40 #define CFFPS_CCIN_VERSION_2 0x2e 41 #define CFFPS_CCIN_VERSION_3 0x51 42 43 /* STATUS_MFR_SPECIFIC bits */ 44 #define CFFPS_MFR_FAN_FAULT BIT(0) 45 #define CFFPS_MFR_THERMAL_FAULT BIT(1) 46 #define CFFPS_MFR_OV_FAULT BIT(2) 47 #define CFFPS_MFR_UV_FAULT BIT(3) 48 #define CFFPS_MFR_PS_KILL BIT(4) 49 #define CFFPS_MFR_OC_FAULT BIT(5) 50 #define CFFPS_MFR_VAUX_FAULT BIT(6) 51 #define CFFPS_MFR_CURRENT_SHARE_WARNING BIT(7) 52 53 #define CFFPS_LED_BLINK (BIT(0) | BIT(6)) 54 #define CFFPS_LED_ON (BIT(1) | BIT(6)) 55 #define CFFPS_LED_OFF (BIT(2) | BIT(6)) 56 #define CFFPS_BLINK_RATE_MS 250 57 58 enum { 59 CFFPS_DEBUGFS_INPUT_HISTORY = 0, 60 CFFPS_DEBUGFS_FRU, 61 CFFPS_DEBUGFS_PN, 62 CFFPS_DEBUGFS_HEADER, 63 CFFPS_DEBUGFS_SN, 64 CFFPS_DEBUGFS_MAX_POWER_OUT, 65 CFFPS_DEBUGFS_CCIN, 66 CFFPS_DEBUGFS_FW, 67 CFFPS_DEBUGFS_ON_OFF_CONFIG, 68 CFFPS_DEBUGFS_NUM_ENTRIES 69 }; 70 71 enum versions { cffps1, cffps2, cffps_unknown }; 72 73 struct ibm_cffps_input_history { 74 struct mutex update_lock; 75 unsigned long last_update; 76 77 u8 byte_count; 78 u8 data[CFFPS_INPUT_HISTORY_SIZE]; 79 }; 80 81 struct ibm_cffps { 82 enum versions version; 83 struct i2c_client *client; 84 85 struct ibm_cffps_input_history input_history; 86 87 int debugfs_entries[CFFPS_DEBUGFS_NUM_ENTRIES]; 88 89 char led_name[32]; 90 u8 led_state; 91 struct led_classdev led; 92 }; 93 94 static const struct i2c_device_id ibm_cffps_id[]; 95 96 #define to_psu(x, y) container_of((x), struct ibm_cffps, debugfs_entries[(y)]) 97 98 static ssize_t ibm_cffps_read_input_history(struct ibm_cffps *psu, 99 char __user *buf, size_t count, 100 loff_t *ppos) 101 { 102 int rc; 103 u8 msgbuf0[1] = { CFFPS_INPUT_HISTORY_CMD }; 104 u8 msgbuf1[CFFPS_INPUT_HISTORY_SIZE + 1] = { 0 }; 105 struct i2c_msg msg[2] = { 106 { 107 .addr = psu->client->addr, 108 .flags = psu->client->flags, 109 .len = 1, 110 .buf = msgbuf0, 111 }, { 112 .addr = psu->client->addr, 113 .flags = psu->client->flags | I2C_M_RD, 114 .len = CFFPS_INPUT_HISTORY_SIZE + 1, 115 .buf = msgbuf1, 116 }, 117 }; 118 119 if (!*ppos) { 120 mutex_lock(&psu->input_history.update_lock); 121 if (time_after(jiffies, psu->input_history.last_update + HZ)) { 122 /* 123 * Use a raw i2c transfer, since we need more bytes 124 * than Linux I2C supports through smbus xfr (only 32). 125 */ 126 rc = i2c_transfer(psu->client->adapter, msg, 2); 127 if (rc < 0) { 128 mutex_unlock(&psu->input_history.update_lock); 129 return rc; 130 } 131 132 psu->input_history.byte_count = msgbuf1[0]; 133 memcpy(psu->input_history.data, &msgbuf1[1], 134 CFFPS_INPUT_HISTORY_SIZE); 135 psu->input_history.last_update = jiffies; 136 } 137 138 mutex_unlock(&psu->input_history.update_lock); 139 } 140 141 return simple_read_from_buffer(buf, count, ppos, 142 psu->input_history.data, 143 psu->input_history.byte_count); 144 } 145 146 static ssize_t ibm_cffps_debugfs_read(struct file *file, char __user *buf, 147 size_t count, loff_t *ppos) 148 { 149 u8 cmd; 150 int i, rc; 151 int *idxp = file->private_data; 152 int idx = *idxp; 153 struct ibm_cffps *psu = to_psu(idxp, idx); 154 char data[I2C_SMBUS_BLOCK_MAX + 2] = { 0 }; 155 156 pmbus_set_page(psu->client, 0, 0xff); 157 158 switch (idx) { 159 case CFFPS_DEBUGFS_INPUT_HISTORY: 160 return ibm_cffps_read_input_history(psu, buf, count, ppos); 161 case CFFPS_DEBUGFS_FRU: 162 cmd = CFFPS_FRU_CMD; 163 break; 164 case CFFPS_DEBUGFS_PN: 165 cmd = CFFPS_PN_CMD; 166 break; 167 case CFFPS_DEBUGFS_HEADER: 168 cmd = CFFPS_HEADER_CMD; 169 break; 170 case CFFPS_DEBUGFS_SN: 171 cmd = CFFPS_SN_CMD; 172 break; 173 case CFFPS_DEBUGFS_MAX_POWER_OUT: 174 if (psu->version == cffps1) { 175 rc = i2c_smbus_read_word_swapped(psu->client, 176 CFFPS_MAX_POWER_OUT_CMD); 177 } else { 178 rc = i2c_smbus_read_word_data(psu->client, 179 CFFPS_MAX_POWER_OUT_CMD); 180 } 181 182 if (rc < 0) 183 return rc; 184 185 rc = snprintf(data, I2C_SMBUS_BLOCK_MAX, "%d", rc); 186 goto done; 187 case CFFPS_DEBUGFS_CCIN: 188 rc = i2c_smbus_read_word_swapped(psu->client, CFFPS_CCIN_CMD); 189 if (rc < 0) 190 return rc; 191 192 rc = snprintf(data, 5, "%04X", rc); 193 goto done; 194 case CFFPS_DEBUGFS_FW: 195 switch (psu->version) { 196 case cffps1: 197 for (i = 0; i < CFFPS1_FW_NUM_BYTES; ++i) { 198 rc = i2c_smbus_read_byte_data(psu->client, 199 CFFPS_FW_CMD + 200 i); 201 if (rc < 0) 202 return rc; 203 204 snprintf(&data[i * 2], 3, "%02X", rc); 205 } 206 207 rc = i * 2; 208 break; 209 case cffps2: 210 for (i = 0; i < CFFPS2_FW_NUM_WORDS; ++i) { 211 rc = i2c_smbus_read_word_data(psu->client, 212 CFFPS_FW_CMD + 213 i); 214 if (rc < 0) 215 return rc; 216 217 snprintf(&data[i * 4], 5, "%04X", rc); 218 } 219 220 rc = i * 4; 221 break; 222 default: 223 return -EOPNOTSUPP; 224 } 225 goto done; 226 case CFFPS_DEBUGFS_ON_OFF_CONFIG: 227 rc = i2c_smbus_read_byte_data(psu->client, 228 PMBUS_ON_OFF_CONFIG); 229 if (rc < 0) 230 return rc; 231 232 rc = snprintf(data, 3, "%02x", rc); 233 goto done; 234 default: 235 return -EINVAL; 236 } 237 238 rc = i2c_smbus_read_block_data(psu->client, cmd, data); 239 if (rc < 0) 240 return rc; 241 242 done: 243 data[rc] = '\n'; 244 rc += 2; 245 246 return simple_read_from_buffer(buf, count, ppos, data, rc); 247 } 248 249 static ssize_t ibm_cffps_debugfs_write(struct file *file, 250 const char __user *buf, size_t count, 251 loff_t *ppos) 252 { 253 u8 data; 254 ssize_t rc; 255 int *idxp = file->private_data; 256 int idx = *idxp; 257 struct ibm_cffps *psu = to_psu(idxp, idx); 258 259 switch (idx) { 260 case CFFPS_DEBUGFS_ON_OFF_CONFIG: 261 pmbus_set_page(psu->client, 0, 0xff); 262 263 rc = simple_write_to_buffer(&data, 1, ppos, buf, count); 264 if (rc <= 0) 265 return rc; 266 267 rc = i2c_smbus_write_byte_data(psu->client, 268 PMBUS_ON_OFF_CONFIG, data); 269 if (rc) 270 return rc; 271 272 rc = 1; 273 break; 274 default: 275 return -EINVAL; 276 } 277 278 return rc; 279 } 280 281 static const struct file_operations ibm_cffps_fops = { 282 .llseek = noop_llseek, 283 .read = ibm_cffps_debugfs_read, 284 .write = ibm_cffps_debugfs_write, 285 .open = simple_open, 286 }; 287 288 static int ibm_cffps_read_byte_data(struct i2c_client *client, int page, 289 int reg) 290 { 291 int rc, mfr; 292 293 switch (reg) { 294 case PMBUS_STATUS_VOUT: 295 case PMBUS_STATUS_IOUT: 296 case PMBUS_STATUS_TEMPERATURE: 297 case PMBUS_STATUS_FAN_12: 298 rc = pmbus_read_byte_data(client, page, reg); 299 if (rc < 0) 300 return rc; 301 302 mfr = pmbus_read_byte_data(client, page, 303 PMBUS_STATUS_MFR_SPECIFIC); 304 if (mfr < 0) 305 /* 306 * Return the status register instead of an error, 307 * since we successfully read status. 308 */ 309 return rc; 310 311 /* Add MFR_SPECIFIC bits to the standard pmbus status regs. */ 312 if (reg == PMBUS_STATUS_FAN_12) { 313 if (mfr & CFFPS_MFR_FAN_FAULT) 314 rc |= PB_FAN_FAN1_FAULT; 315 } else if (reg == PMBUS_STATUS_TEMPERATURE) { 316 if (mfr & CFFPS_MFR_THERMAL_FAULT) 317 rc |= PB_TEMP_OT_FAULT; 318 } else if (reg == PMBUS_STATUS_VOUT) { 319 if (mfr & (CFFPS_MFR_OV_FAULT | CFFPS_MFR_VAUX_FAULT)) 320 rc |= PB_VOLTAGE_OV_FAULT; 321 if (mfr & CFFPS_MFR_UV_FAULT) 322 rc |= PB_VOLTAGE_UV_FAULT; 323 } else if (reg == PMBUS_STATUS_IOUT) { 324 if (mfr & CFFPS_MFR_OC_FAULT) 325 rc |= PB_IOUT_OC_FAULT; 326 if (mfr & CFFPS_MFR_CURRENT_SHARE_WARNING) 327 rc |= PB_CURRENT_SHARE_FAULT; 328 } 329 break; 330 default: 331 rc = -ENODATA; 332 break; 333 } 334 335 return rc; 336 } 337 338 static int ibm_cffps_read_word_data(struct i2c_client *client, int page, 339 int phase, int reg) 340 { 341 int rc, mfr; 342 343 switch (reg) { 344 case PMBUS_STATUS_WORD: 345 rc = pmbus_read_word_data(client, page, phase, reg); 346 if (rc < 0) 347 return rc; 348 349 mfr = pmbus_read_byte_data(client, page, 350 PMBUS_STATUS_MFR_SPECIFIC); 351 if (mfr < 0) 352 /* 353 * Return the status register instead of an error, 354 * since we successfully read status. 355 */ 356 return rc; 357 358 if (mfr & CFFPS_MFR_PS_KILL) 359 rc |= PB_STATUS_OFF; 360 break; 361 case PMBUS_VIRT_READ_VMON: 362 rc = pmbus_read_word_data(client, page, phase, 363 CFFPS_12VCS_VOUT_CMD); 364 break; 365 default: 366 rc = -ENODATA; 367 break; 368 } 369 370 return rc; 371 } 372 373 static int ibm_cffps_led_brightness_set(struct led_classdev *led_cdev, 374 enum led_brightness brightness) 375 { 376 int rc; 377 u8 next_led_state; 378 struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led); 379 380 if (brightness == LED_OFF) { 381 next_led_state = CFFPS_LED_OFF; 382 } else { 383 brightness = LED_FULL; 384 385 if (psu->led_state != CFFPS_LED_BLINK) 386 next_led_state = CFFPS_LED_ON; 387 else 388 next_led_state = CFFPS_LED_BLINK; 389 } 390 391 dev_dbg(&psu->client->dev, "LED brightness set: %d. Command: %d.\n", 392 brightness, next_led_state); 393 394 pmbus_set_page(psu->client, 0, 0xff); 395 396 rc = i2c_smbus_write_byte_data(psu->client, CFFPS_SYS_CONFIG_CMD, 397 next_led_state); 398 if (rc < 0) 399 return rc; 400 401 psu->led_state = next_led_state; 402 led_cdev->brightness = brightness; 403 404 return 0; 405 } 406 407 static int ibm_cffps_led_blink_set(struct led_classdev *led_cdev, 408 unsigned long *delay_on, 409 unsigned long *delay_off) 410 { 411 int rc; 412 struct ibm_cffps *psu = container_of(led_cdev, struct ibm_cffps, led); 413 414 dev_dbg(&psu->client->dev, "LED blink set.\n"); 415 416 pmbus_set_page(psu->client, 0, 0xff); 417 418 rc = i2c_smbus_write_byte_data(psu->client, CFFPS_SYS_CONFIG_CMD, 419 CFFPS_LED_BLINK); 420 if (rc < 0) 421 return rc; 422 423 psu->led_state = CFFPS_LED_BLINK; 424 led_cdev->brightness = LED_FULL; 425 *delay_on = CFFPS_BLINK_RATE_MS; 426 *delay_off = CFFPS_BLINK_RATE_MS; 427 428 return 0; 429 } 430 431 static void ibm_cffps_create_led_class(struct ibm_cffps *psu) 432 { 433 int rc; 434 struct i2c_client *client = psu->client; 435 struct device *dev = &client->dev; 436 437 snprintf(psu->led_name, sizeof(psu->led_name), "%s-%02x", client->name, 438 client->addr); 439 psu->led.name = psu->led_name; 440 psu->led.max_brightness = LED_FULL; 441 psu->led.brightness_set_blocking = ibm_cffps_led_brightness_set; 442 psu->led.blink_set = ibm_cffps_led_blink_set; 443 444 rc = devm_led_classdev_register(dev, &psu->led); 445 if (rc) 446 dev_warn(dev, "failed to register led class: %d\n", rc); 447 else 448 i2c_smbus_write_byte_data(client, CFFPS_SYS_CONFIG_CMD, 449 CFFPS_LED_OFF); 450 } 451 452 static struct pmbus_driver_info ibm_cffps_info[] = { 453 [cffps1] = { 454 .pages = 1, 455 .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | 456 PMBUS_HAVE_PIN | PMBUS_HAVE_FAN12 | PMBUS_HAVE_TEMP | 457 PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 | 458 PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT | 459 PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP | 460 PMBUS_HAVE_STATUS_FAN12, 461 .read_byte_data = ibm_cffps_read_byte_data, 462 .read_word_data = ibm_cffps_read_word_data, 463 }, 464 [cffps2] = { 465 .pages = 2, 466 .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | 467 PMBUS_HAVE_PIN | PMBUS_HAVE_FAN12 | PMBUS_HAVE_TEMP | 468 PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 | 469 PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT | 470 PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP | 471 PMBUS_HAVE_STATUS_FAN12 | PMBUS_HAVE_VMON, 472 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | 473 PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 | 474 PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT, 475 .read_byte_data = ibm_cffps_read_byte_data, 476 .read_word_data = ibm_cffps_read_word_data, 477 }, 478 }; 479 480 static struct pmbus_platform_data ibm_cffps_pdata = { 481 .flags = PMBUS_SKIP_STATUS_CHECK | PMBUS_NO_CAPABILITY, 482 }; 483 484 static int ibm_cffps_probe(struct i2c_client *client) 485 { 486 int i, rc; 487 enum versions vs = cffps_unknown; 488 struct dentry *debugfs; 489 struct dentry *ibm_cffps_dir; 490 struct ibm_cffps *psu; 491 const void *md = of_device_get_match_data(&client->dev); 492 const struct i2c_device_id *id; 493 494 if (md) { 495 vs = (enum versions)md; 496 } else { 497 id = i2c_match_id(ibm_cffps_id, client); 498 if (id) 499 vs = (enum versions)id->driver_data; 500 } 501 502 if (vs == cffps_unknown) { 503 u16 ccin_revision = 0; 504 u16 ccin_version = CFFPS_CCIN_VERSION_1; 505 int ccin = i2c_smbus_read_word_swapped(client, CFFPS_CCIN_CMD); 506 507 if (ccin > 0) { 508 ccin_revision = FIELD_GET(CFFPS_CCIN_REVISION, ccin); 509 ccin_version = FIELD_GET(CFFPS_CCIN_VERSION, ccin); 510 } 511 512 switch (ccin_version) { 513 default: 514 case CFFPS_CCIN_VERSION_1: 515 vs = cffps1; 516 break; 517 case CFFPS_CCIN_VERSION_2: 518 vs = cffps2; 519 break; 520 case CFFPS_CCIN_VERSION_3: 521 if (ccin_revision == CFFPS_CCIN_REVISION_LEGACY) 522 vs = cffps1; 523 else 524 vs = cffps2; 525 break; 526 } 527 528 /* Set the client name to include the version number. */ 529 snprintf(client->name, I2C_NAME_SIZE, "cffps%d", vs + 1); 530 } 531 532 client->dev.platform_data = &ibm_cffps_pdata; 533 rc = pmbus_do_probe(client, &ibm_cffps_info[vs]); 534 if (rc) 535 return rc; 536 537 /* 538 * Don't fail the probe if there isn't enough memory for leds and 539 * debugfs. 540 */ 541 psu = devm_kzalloc(&client->dev, sizeof(*psu), GFP_KERNEL); 542 if (!psu) 543 return 0; 544 545 psu->version = vs; 546 psu->client = client; 547 mutex_init(&psu->input_history.update_lock); 548 psu->input_history.last_update = jiffies - HZ; 549 550 ibm_cffps_create_led_class(psu); 551 552 /* Don't fail the probe if we can't create debugfs */ 553 debugfs = pmbus_get_debugfs_dir(client); 554 if (!debugfs) 555 return 0; 556 557 ibm_cffps_dir = debugfs_create_dir(client->name, debugfs); 558 if (!ibm_cffps_dir) 559 return 0; 560 561 for (i = 0; i < CFFPS_DEBUGFS_NUM_ENTRIES; ++i) 562 psu->debugfs_entries[i] = i; 563 564 debugfs_create_file("input_history", 0444, ibm_cffps_dir, 565 &psu->debugfs_entries[CFFPS_DEBUGFS_INPUT_HISTORY], 566 &ibm_cffps_fops); 567 debugfs_create_file("fru", 0444, ibm_cffps_dir, 568 &psu->debugfs_entries[CFFPS_DEBUGFS_FRU], 569 &ibm_cffps_fops); 570 debugfs_create_file("part_number", 0444, ibm_cffps_dir, 571 &psu->debugfs_entries[CFFPS_DEBUGFS_PN], 572 &ibm_cffps_fops); 573 debugfs_create_file("header", 0444, ibm_cffps_dir, 574 &psu->debugfs_entries[CFFPS_DEBUGFS_HEADER], 575 &ibm_cffps_fops); 576 debugfs_create_file("serial_number", 0444, ibm_cffps_dir, 577 &psu->debugfs_entries[CFFPS_DEBUGFS_SN], 578 &ibm_cffps_fops); 579 debugfs_create_file("max_power_out", 0444, ibm_cffps_dir, 580 &psu->debugfs_entries[CFFPS_DEBUGFS_MAX_POWER_OUT], 581 &ibm_cffps_fops); 582 debugfs_create_file("ccin", 0444, ibm_cffps_dir, 583 &psu->debugfs_entries[CFFPS_DEBUGFS_CCIN], 584 &ibm_cffps_fops); 585 debugfs_create_file("fw_version", 0444, ibm_cffps_dir, 586 &psu->debugfs_entries[CFFPS_DEBUGFS_FW], 587 &ibm_cffps_fops); 588 debugfs_create_file("on_off_config", 0644, ibm_cffps_dir, 589 &psu->debugfs_entries[CFFPS_DEBUGFS_ON_OFF_CONFIG], 590 &ibm_cffps_fops); 591 592 return 0; 593 } 594 595 static const struct i2c_device_id ibm_cffps_id[] = { 596 { "ibm_cffps1", cffps1 }, 597 { "ibm_cffps2", cffps2 }, 598 { "ibm_cffps", cffps_unknown }, 599 {} 600 }; 601 MODULE_DEVICE_TABLE(i2c, ibm_cffps_id); 602 603 static const struct of_device_id ibm_cffps_of_match[] = { 604 { 605 .compatible = "ibm,cffps1", 606 .data = (void *)cffps1 607 }, 608 { 609 .compatible = "ibm,cffps2", 610 .data = (void *)cffps2 611 }, 612 { 613 .compatible = "ibm,cffps", 614 .data = (void *)cffps_unknown 615 }, 616 {} 617 }; 618 MODULE_DEVICE_TABLE(of, ibm_cffps_of_match); 619 620 static struct i2c_driver ibm_cffps_driver = { 621 .driver = { 622 .name = "ibm-cffps", 623 .of_match_table = ibm_cffps_of_match, 624 }, 625 .probe_new = ibm_cffps_probe, 626 .id_table = ibm_cffps_id, 627 }; 628 629 module_i2c_driver(ibm_cffps_driver); 630 631 MODULE_AUTHOR("Eddie James"); 632 MODULE_DESCRIPTION("PMBus driver for IBM Common Form Factor power supplies"); 633 MODULE_LICENSE("GPL"); 634 MODULE_IMPORT_NS(PMBUS); 635