1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller 4 * Configuration via SMBus. 5 * 6 * Copyright (c) 2017 SKIDATA AG 7 * 8 * This work is based on the USB3503 driver by Dongjin Kim and 9 * a not-accepted patch by Fabien Lahoudere, see: 10 * https://patchwork.kernel.org/patch/9257715/ 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 */ 22 23 #include <linux/delay.h> 24 #include <linux/gpio/consumer.h> 25 #include <linux/i2c.h> 26 #include <linux/module.h> 27 #include <linux/nls.h> 28 #include <linux/of_device.h> 29 #include <linux/slab.h> 30 31 /* Internal Register Set Addresses & Default Values acc. to DS00001692C */ 32 #define USB251XB_ADDR_VENDOR_ID_LSB 0x00 33 #define USB251XB_ADDR_VENDOR_ID_MSB 0x01 34 #define USB251XB_DEF_VENDOR_ID 0x0424 35 36 #define USB251XB_ADDR_PRODUCT_ID_LSB 0x02 37 #define USB251XB_ADDR_PRODUCT_ID_MSB 0x03 38 #define USB251XB_DEF_PRODUCT_ID_12 0x2512 /* USB2512B/12Bi */ 39 #define USB251XB_DEF_PRODUCT_ID_13 0x2513 /* USB2513B/13Bi */ 40 #define USB251XB_DEF_PRODUCT_ID_14 0x2514 /* USB2514B/14Bi */ 41 #define USB251XB_DEF_PRODUCT_ID_17 0x2517 /* USB2517/17i */ 42 43 #define USB251XB_ADDR_DEVICE_ID_LSB 0x04 44 #define USB251XB_ADDR_DEVICE_ID_MSB 0x05 45 #define USB251XB_DEF_DEVICE_ID 0x0BB3 46 47 #define USB251XB_ADDR_CONFIG_DATA_1 0x06 48 #define USB251XB_DEF_CONFIG_DATA_1 0x9B 49 #define USB251XB_ADDR_CONFIG_DATA_2 0x07 50 #define USB251XB_DEF_CONFIG_DATA_2 0x20 51 #define USB251XB_ADDR_CONFIG_DATA_3 0x08 52 #define USB251XB_DEF_CONFIG_DATA_3 0x02 53 54 #define USB251XB_ADDR_NON_REMOVABLE_DEVICES 0x09 55 #define USB251XB_DEF_NON_REMOVABLE_DEVICES 0x00 56 57 #define USB251XB_ADDR_PORT_DISABLE_SELF 0x0A 58 #define USB251XB_DEF_PORT_DISABLE_SELF 0x00 59 #define USB251XB_ADDR_PORT_DISABLE_BUS 0x0B 60 #define USB251XB_DEF_PORT_DISABLE_BUS 0x00 61 62 #define USB251XB_ADDR_MAX_POWER_SELF 0x0C 63 #define USB251XB_DEF_MAX_POWER_SELF 0x01 64 #define USB251XB_ADDR_MAX_POWER_BUS 0x0D 65 #define USB251XB_DEF_MAX_POWER_BUS 0x32 66 67 #define USB251XB_ADDR_MAX_CURRENT_SELF 0x0E 68 #define USB251XB_DEF_MAX_CURRENT_SELF 0x01 69 #define USB251XB_ADDR_MAX_CURRENT_BUS 0x0F 70 #define USB251XB_DEF_MAX_CURRENT_BUS 0x32 71 72 #define USB251XB_ADDR_POWER_ON_TIME 0x10 73 #define USB251XB_DEF_POWER_ON_TIME 0x32 74 75 #define USB251XB_ADDR_LANGUAGE_ID_HIGH 0x11 76 #define USB251XB_ADDR_LANGUAGE_ID_LOW 0x12 77 #define USB251XB_DEF_LANGUAGE_ID 0x0000 78 79 #define USB251XB_STRING_BUFSIZE 62 80 #define USB251XB_ADDR_MANUFACTURER_STRING_LEN 0x13 81 #define USB251XB_ADDR_MANUFACTURER_STRING 0x16 82 #define USB251XB_DEF_MANUFACTURER_STRING "Microchip" 83 84 #define USB251XB_ADDR_PRODUCT_STRING_LEN 0x14 85 #define USB251XB_ADDR_PRODUCT_STRING 0x54 86 #define USB251XB_DEF_PRODUCT_STRING "USB251xB/xBi/7i" 87 88 #define USB251XB_ADDR_SERIAL_STRING_LEN 0x15 89 #define USB251XB_ADDR_SERIAL_STRING 0x92 90 #define USB251XB_DEF_SERIAL_STRING "" 91 92 #define USB251XB_ADDR_BATTERY_CHARGING_ENABLE 0xD0 93 #define USB251XB_DEF_BATTERY_CHARGING_ENABLE 0x00 94 95 #define USB251XB_ADDR_BOOST_UP 0xF6 96 #define USB251XB_DEF_BOOST_UP 0x00 97 #define USB251XB_ADDR_BOOST_57 0xF7 98 #define USB251XB_DEF_BOOST_57 0x00 99 #define USB251XB_ADDR_BOOST_14 0xF8 100 #define USB251XB_DEF_BOOST_14 0x00 101 102 #define USB251XB_ADDR_PORT_SWAP 0xFA 103 #define USB251XB_DEF_PORT_SWAP 0x00 104 105 #define USB251XB_ADDR_PORT_MAP_12 0xFB 106 #define USB251XB_DEF_PORT_MAP_12 0x00 107 #define USB251XB_ADDR_PORT_MAP_34 0xFC 108 #define USB251XB_DEF_PORT_MAP_34 0x00 /* USB251{3B/i,4B/i,7/i} only */ 109 #define USB251XB_ADDR_PORT_MAP_56 0xFD 110 #define USB251XB_DEF_PORT_MAP_56 0x00 /* USB2517/i only */ 111 #define USB251XB_ADDR_PORT_MAP_7 0xFE 112 #define USB251XB_DEF_PORT_MAP_7 0x00 /* USB2517/i only */ 113 114 #define USB251XB_ADDR_STATUS_COMMAND 0xFF 115 #define USB251XB_STATUS_COMMAND_SMBUS_DOWN 0x04 116 #define USB251XB_STATUS_COMMAND_RESET 0x02 117 #define USB251XB_STATUS_COMMAND_ATTACH 0x01 118 119 #define USB251XB_I2C_REG_SZ 0x100 120 #define USB251XB_I2C_WRITE_SZ 0x10 121 122 #define DRIVER_NAME "usb251xb" 123 #define DRIVER_DESC "Microchip USB 2.0 Hi-Speed Hub Controller" 124 125 struct usb251xb { 126 struct device *dev; 127 struct i2c_client *i2c; 128 u8 skip_config; 129 struct gpio_desc *gpio_reset; 130 u16 vendor_id; 131 u16 product_id; 132 u16 device_id; 133 u8 conf_data1; 134 u8 conf_data2; 135 u8 conf_data3; 136 u8 non_rem_dev; 137 u8 port_disable_sp; 138 u8 port_disable_bp; 139 u8 max_power_sp; 140 u8 max_power_bp; 141 u8 max_current_sp; 142 u8 max_current_bp; 143 u8 power_on_time; 144 u16 lang_id; 145 u8 manufacturer_len; 146 u8 product_len; 147 u8 serial_len; 148 char manufacturer[USB251XB_STRING_BUFSIZE]; 149 char product[USB251XB_STRING_BUFSIZE]; 150 char serial[USB251XB_STRING_BUFSIZE]; 151 u8 bat_charge_en; 152 u8 boost_up; 153 u8 boost_57; 154 u8 boost_14; 155 u8 port_swap; 156 u8 port_map12; 157 u8 port_map34; 158 u8 port_map56; 159 u8 port_map7; 160 u8 status; 161 }; 162 163 struct usb251xb_data { 164 u16 product_id; 165 u8 port_cnt; 166 bool led_support; 167 bool bat_support; 168 char product_str[USB251XB_STRING_BUFSIZE / 2]; /* ASCII string */ 169 }; 170 171 static const struct usb251xb_data usb2512b_data = { 172 .product_id = 0x2512, 173 .port_cnt = 2, 174 .led_support = false, 175 .bat_support = true, 176 .product_str = "USB2512B", 177 }; 178 179 static const struct usb251xb_data usb2512bi_data = { 180 .product_id = 0x2512, 181 .port_cnt = 2, 182 .led_support = false, 183 .bat_support = true, 184 .product_str = "USB2512Bi", 185 }; 186 187 static const struct usb251xb_data usb2513b_data = { 188 .product_id = 0x2513, 189 .port_cnt = 3, 190 .led_support = false, 191 .bat_support = true, 192 .product_str = "USB2513B", 193 }; 194 195 static const struct usb251xb_data usb2513bi_data = { 196 .product_id = 0x2513, 197 .port_cnt = 3, 198 .led_support = false, 199 .bat_support = true, 200 .product_str = "USB2513Bi", 201 }; 202 203 static const struct usb251xb_data usb2514b_data = { 204 .product_id = 0x2514, 205 .port_cnt = 4, 206 .led_support = false, 207 .bat_support = true, 208 .product_str = "USB2514B", 209 }; 210 211 static const struct usb251xb_data usb2514bi_data = { 212 .product_id = 0x2514, 213 .port_cnt = 4, 214 .led_support = false, 215 .bat_support = true, 216 .product_str = "USB2514Bi", 217 }; 218 219 static const struct usb251xb_data usb2517_data = { 220 .product_id = 0x2517, 221 .port_cnt = 7, 222 .led_support = true, 223 .bat_support = false, 224 .product_str = "USB2517", 225 }; 226 227 static const struct usb251xb_data usb2517i_data = { 228 .product_id = 0x2517, 229 .port_cnt = 7, 230 .led_support = true, 231 .bat_support = false, 232 .product_str = "USB2517i", 233 }; 234 235 static void usb251xb_reset(struct usb251xb *hub, int state) 236 { 237 if (!hub->gpio_reset) 238 return; 239 240 gpiod_set_value_cansleep(hub->gpio_reset, state); 241 242 /* wait for hub recovery/stabilization */ 243 if (!state) 244 usleep_range(500, 750); /* >=500us at power on */ 245 else 246 usleep_range(1, 10); /* >=1us at power down */ 247 } 248 249 static int usb251xb_connect(struct usb251xb *hub) 250 { 251 struct device *dev = hub->dev; 252 int err, i; 253 char i2c_wb[USB251XB_I2C_REG_SZ]; 254 255 memset(i2c_wb, 0, USB251XB_I2C_REG_SZ); 256 257 if (hub->skip_config) { 258 dev_info(dev, "Skip hub configuration, only attach.\n"); 259 i2c_wb[0] = 0x01; 260 i2c_wb[1] = USB251XB_STATUS_COMMAND_ATTACH; 261 262 usb251xb_reset(hub, 0); 263 264 err = i2c_smbus_write_i2c_block_data(hub->i2c, 265 USB251XB_ADDR_STATUS_COMMAND, 2, i2c_wb); 266 if (err) { 267 dev_err(dev, "attaching hub failed: %d\n", err); 268 return err; 269 } 270 return 0; 271 } 272 273 i2c_wb[USB251XB_ADDR_VENDOR_ID_MSB] = (hub->vendor_id >> 8) & 0xFF; 274 i2c_wb[USB251XB_ADDR_VENDOR_ID_LSB] = hub->vendor_id & 0xFF; 275 i2c_wb[USB251XB_ADDR_PRODUCT_ID_MSB] = (hub->product_id >> 8) & 0xFF; 276 i2c_wb[USB251XB_ADDR_PRODUCT_ID_LSB] = hub->product_id & 0xFF; 277 i2c_wb[USB251XB_ADDR_DEVICE_ID_MSB] = (hub->device_id >> 8) & 0xFF; 278 i2c_wb[USB251XB_ADDR_DEVICE_ID_LSB] = hub->device_id & 0xFF; 279 i2c_wb[USB251XB_ADDR_CONFIG_DATA_1] = hub->conf_data1; 280 i2c_wb[USB251XB_ADDR_CONFIG_DATA_2] = hub->conf_data2; 281 i2c_wb[USB251XB_ADDR_CONFIG_DATA_3] = hub->conf_data3; 282 i2c_wb[USB251XB_ADDR_NON_REMOVABLE_DEVICES] = hub->non_rem_dev; 283 i2c_wb[USB251XB_ADDR_PORT_DISABLE_SELF] = hub->port_disable_sp; 284 i2c_wb[USB251XB_ADDR_PORT_DISABLE_BUS] = hub->port_disable_bp; 285 i2c_wb[USB251XB_ADDR_MAX_POWER_SELF] = hub->max_power_sp; 286 i2c_wb[USB251XB_ADDR_MAX_POWER_BUS] = hub->max_power_bp; 287 i2c_wb[USB251XB_ADDR_MAX_CURRENT_SELF] = hub->max_current_sp; 288 i2c_wb[USB251XB_ADDR_MAX_CURRENT_BUS] = hub->max_current_bp; 289 i2c_wb[USB251XB_ADDR_POWER_ON_TIME] = hub->power_on_time; 290 i2c_wb[USB251XB_ADDR_LANGUAGE_ID_HIGH] = (hub->lang_id >> 8) & 0xFF; 291 i2c_wb[USB251XB_ADDR_LANGUAGE_ID_LOW] = hub->lang_id & 0xFF; 292 i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING_LEN] = hub->manufacturer_len; 293 i2c_wb[USB251XB_ADDR_PRODUCT_STRING_LEN] = hub->product_len; 294 i2c_wb[USB251XB_ADDR_SERIAL_STRING_LEN] = hub->serial_len; 295 memcpy(&i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING], hub->manufacturer, 296 USB251XB_STRING_BUFSIZE); 297 memcpy(&i2c_wb[USB251XB_ADDR_SERIAL_STRING], hub->serial, 298 USB251XB_STRING_BUFSIZE); 299 memcpy(&i2c_wb[USB251XB_ADDR_PRODUCT_STRING], hub->product, 300 USB251XB_STRING_BUFSIZE); 301 i2c_wb[USB251XB_ADDR_BATTERY_CHARGING_ENABLE] = hub->bat_charge_en; 302 i2c_wb[USB251XB_ADDR_BOOST_UP] = hub->boost_up; 303 i2c_wb[USB251XB_ADDR_BOOST_57] = hub->boost_57; 304 i2c_wb[USB251XB_ADDR_BOOST_14] = hub->boost_14; 305 i2c_wb[USB251XB_ADDR_PORT_SWAP] = hub->port_swap; 306 i2c_wb[USB251XB_ADDR_PORT_MAP_12] = hub->port_map12; 307 i2c_wb[USB251XB_ADDR_PORT_MAP_34] = hub->port_map34; 308 i2c_wb[USB251XB_ADDR_PORT_MAP_56] = hub->port_map56; 309 i2c_wb[USB251XB_ADDR_PORT_MAP_7] = hub->port_map7; 310 i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH; 311 312 usb251xb_reset(hub, 0); 313 314 /* write registers */ 315 for (i = 0; i < (USB251XB_I2C_REG_SZ / USB251XB_I2C_WRITE_SZ); i++) { 316 int offset = i * USB251XB_I2C_WRITE_SZ; 317 char wbuf[USB251XB_I2C_WRITE_SZ + 1]; 318 319 /* The first data byte transferred tells the hub how many data 320 * bytes will follow (byte count). 321 */ 322 wbuf[0] = USB251XB_I2C_WRITE_SZ; 323 memcpy(&wbuf[1], &i2c_wb[offset], USB251XB_I2C_WRITE_SZ); 324 325 dev_dbg(dev, "writing %d byte block %d to 0x%02X\n", 326 USB251XB_I2C_WRITE_SZ, i, offset); 327 328 err = i2c_smbus_write_i2c_block_data(hub->i2c, offset, 329 USB251XB_I2C_WRITE_SZ + 1, 330 wbuf); 331 if (err) 332 goto out_err; 333 } 334 335 dev_info(dev, "Hub configuration was successful.\n"); 336 return 0; 337 338 out_err: 339 dev_err(dev, "configuring block %d failed: %d\n", i, err); 340 return err; 341 } 342 343 #ifdef CONFIG_OF 344 static int usb251xb_get_ofdata(struct usb251xb *hub, 345 struct usb251xb_data *data) 346 { 347 struct device *dev = hub->dev; 348 struct device_node *np = dev->of_node; 349 int len, err, i; 350 u32 property_u32 = 0; 351 const u32 *cproperty_u32; 352 const char *cproperty_char; 353 char str[USB251XB_STRING_BUFSIZE / 2]; 354 355 if (!np) { 356 dev_err(dev, "failed to get ofdata\n"); 357 return -ENODEV; 358 } 359 360 if (of_get_property(np, "skip-config", NULL)) 361 hub->skip_config = 1; 362 else 363 hub->skip_config = 0; 364 365 hub->gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); 366 if (PTR_ERR(hub->gpio_reset) == -EPROBE_DEFER) { 367 return -EPROBE_DEFER; 368 } else if (IS_ERR(hub->gpio_reset)) { 369 err = PTR_ERR(hub->gpio_reset); 370 dev_err(dev, "unable to request GPIO reset pin (%d)\n", err); 371 return err; 372 } 373 374 if (of_property_read_u16_array(np, "vendor-id", &hub->vendor_id, 1)) 375 hub->vendor_id = USB251XB_DEF_VENDOR_ID; 376 377 if (of_property_read_u16_array(np, "product-id", 378 &hub->product_id, 1)) 379 hub->product_id = data->product_id; 380 381 if (of_property_read_u16_array(np, "device-id", &hub->device_id, 1)) 382 hub->device_id = USB251XB_DEF_DEVICE_ID; 383 384 hub->conf_data1 = USB251XB_DEF_CONFIG_DATA_1; 385 if (of_get_property(np, "self-powered", NULL)) { 386 hub->conf_data1 |= BIT(7); 387 388 /* Configure Over-Current sens when self-powered */ 389 hub->conf_data1 &= ~BIT(2); 390 if (of_get_property(np, "ganged-sensing", NULL)) 391 hub->conf_data1 &= ~BIT(1); 392 else if (of_get_property(np, "individual-sensing", NULL)) 393 hub->conf_data1 |= BIT(1); 394 } else if (of_get_property(np, "bus-powered", NULL)) { 395 hub->conf_data1 &= ~BIT(7); 396 397 /* Disable Over-Current sense when bus-powered */ 398 hub->conf_data1 |= BIT(2); 399 } 400 401 if (of_get_property(np, "disable-hi-speed", NULL)) 402 hub->conf_data1 |= BIT(5); 403 404 if (of_get_property(np, "multi-tt", NULL)) 405 hub->conf_data1 |= BIT(4); 406 else if (of_get_property(np, "single-tt", NULL)) 407 hub->conf_data1 &= ~BIT(4); 408 409 if (of_get_property(np, "disable-eop", NULL)) 410 hub->conf_data1 |= BIT(3); 411 412 if (of_get_property(np, "individual-port-switching", NULL)) 413 hub->conf_data1 |= BIT(0); 414 else if (of_get_property(np, "ganged-port-switching", NULL)) 415 hub->conf_data1 &= ~BIT(0); 416 417 hub->conf_data2 = USB251XB_DEF_CONFIG_DATA_2; 418 if (of_get_property(np, "dynamic-power-switching", NULL)) 419 hub->conf_data2 |= BIT(7); 420 421 if (!of_property_read_u32(np, "oc-delay-us", &property_u32)) { 422 if (property_u32 == 100) { 423 /* 100 us*/ 424 hub->conf_data2 &= ~BIT(5); 425 hub->conf_data2 &= ~BIT(4); 426 } else if (property_u32 == 4000) { 427 /* 4 ms */ 428 hub->conf_data2 &= ~BIT(5); 429 hub->conf_data2 |= BIT(4); 430 } else if (property_u32 == 16000) { 431 /* 16 ms */ 432 hub->conf_data2 |= BIT(5); 433 hub->conf_data2 |= BIT(4); 434 } else { 435 /* 8 ms (DEFAULT) */ 436 hub->conf_data2 |= BIT(5); 437 hub->conf_data2 &= ~BIT(4); 438 } 439 } 440 441 if (of_get_property(np, "compound-device", NULL)) 442 hub->conf_data2 |= BIT(3); 443 444 hub->conf_data3 = USB251XB_DEF_CONFIG_DATA_3; 445 if (of_get_property(np, "port-mapping-mode", NULL)) 446 hub->conf_data3 |= BIT(3); 447 448 if (data->led_support && of_get_property(np, "led-usb-mode", NULL)) 449 hub->conf_data3 &= ~BIT(1); 450 451 if (of_get_property(np, "string-support", NULL)) 452 hub->conf_data3 |= BIT(0); 453 454 hub->non_rem_dev = USB251XB_DEF_NON_REMOVABLE_DEVICES; 455 cproperty_u32 = of_get_property(np, "non-removable-ports", &len); 456 if (cproperty_u32 && (len / sizeof(u32)) > 0) { 457 for (i = 0; i < len / sizeof(u32); i++) { 458 u32 port = be32_to_cpu(cproperty_u32[i]); 459 460 if ((port >= 1) && (port <= data->port_cnt)) 461 hub->non_rem_dev |= BIT(port); 462 else 463 dev_warn(dev, "NRD port %u doesn't exist\n", 464 port); 465 } 466 } 467 468 hub->port_disable_sp = USB251XB_DEF_PORT_DISABLE_SELF; 469 cproperty_u32 = of_get_property(np, "sp-disabled-ports", &len); 470 if (cproperty_u32 && (len / sizeof(u32)) > 0) { 471 for (i = 0; i < len / sizeof(u32); i++) { 472 u32 port = be32_to_cpu(cproperty_u32[i]); 473 474 if ((port >= 1) && (port <= data->port_cnt)) 475 hub->port_disable_sp |= BIT(port); 476 else 477 dev_warn(dev, "PDS port %u doesn't exist\n", 478 port); 479 } 480 } 481 482 hub->port_disable_bp = USB251XB_DEF_PORT_DISABLE_BUS; 483 cproperty_u32 = of_get_property(np, "bp-disabled-ports", &len); 484 if (cproperty_u32 && (len / sizeof(u32)) > 0) { 485 for (i = 0; i < len / sizeof(u32); i++) { 486 u32 port = be32_to_cpu(cproperty_u32[i]); 487 488 if ((port >= 1) && (port <= data->port_cnt)) 489 hub->port_disable_bp |= BIT(port); 490 else 491 dev_warn(dev, "PDB port %u doesn't exist\n", 492 port); 493 } 494 } 495 496 hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF; 497 if (!of_property_read_u32(np, "sp-max-total-current-microamp", 498 &property_u32)) 499 hub->max_power_sp = min_t(u8, property_u32 / 2000, 50); 500 501 hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS; 502 if (!of_property_read_u32(np, "bp-max-total-current-microamp", 503 &property_u32)) 504 hub->max_power_bp = min_t(u8, property_u32 / 2000, 255); 505 506 hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF; 507 if (!of_property_read_u32(np, "sp-max-removable-current-microamp", 508 &property_u32)) 509 hub->max_current_sp = min_t(u8, property_u32 / 2000, 50); 510 511 hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS; 512 if (!of_property_read_u32(np, "bp-max-removable-current-microamp", 513 &property_u32)) 514 hub->max_current_bp = min_t(u8, property_u32 / 2000, 255); 515 516 hub->power_on_time = USB251XB_DEF_POWER_ON_TIME; 517 if (!of_property_read_u32(np, "power-on-time-ms", &property_u32)) 518 hub->power_on_time = min_t(u8, property_u32 / 2, 255); 519 520 if (of_property_read_u16_array(np, "language-id", &hub->lang_id, 1)) 521 hub->lang_id = USB251XB_DEF_LANGUAGE_ID; 522 523 cproperty_char = of_get_property(np, "manufacturer", NULL); 524 strlcpy(str, cproperty_char ? : USB251XB_DEF_MANUFACTURER_STRING, 525 sizeof(str)); 526 hub->manufacturer_len = strlen(str) & 0xFF; 527 memset(hub->manufacturer, 0, USB251XB_STRING_BUFSIZE); 528 len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str)); 529 len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN, 530 (wchar_t *)hub->manufacturer, 531 USB251XB_STRING_BUFSIZE); 532 533 cproperty_char = of_get_property(np, "product", NULL); 534 strlcpy(str, cproperty_char ? : data->product_str, sizeof(str)); 535 hub->product_len = strlen(str) & 0xFF; 536 memset(hub->product, 0, USB251XB_STRING_BUFSIZE); 537 len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str)); 538 len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN, 539 (wchar_t *)hub->product, 540 USB251XB_STRING_BUFSIZE); 541 542 cproperty_char = of_get_property(np, "serial", NULL); 543 strlcpy(str, cproperty_char ? : USB251XB_DEF_SERIAL_STRING, 544 sizeof(str)); 545 hub->serial_len = strlen(str) & 0xFF; 546 memset(hub->serial, 0, USB251XB_STRING_BUFSIZE); 547 len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str)); 548 len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN, 549 (wchar_t *)hub->serial, 550 USB251XB_STRING_BUFSIZE); 551 552 /* The following parameters are currently not exposed to devicetree, but 553 * may be as soon as needed. 554 */ 555 hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE; 556 hub->boost_up = USB251XB_DEF_BOOST_UP; 557 hub->boost_57 = USB251XB_DEF_BOOST_57; 558 hub->boost_14 = USB251XB_DEF_BOOST_14; 559 hub->port_swap = USB251XB_DEF_PORT_SWAP; 560 hub->port_map12 = USB251XB_DEF_PORT_MAP_12; 561 hub->port_map34 = USB251XB_DEF_PORT_MAP_34; 562 hub->port_map56 = USB251XB_DEF_PORT_MAP_56; 563 hub->port_map7 = USB251XB_DEF_PORT_MAP_7; 564 565 return 0; 566 } 567 568 static const struct of_device_id usb251xb_of_match[] = { 569 { 570 .compatible = "microchip,usb2512b", 571 .data = &usb2512b_data, 572 }, { 573 .compatible = "microchip,usb2512bi", 574 .data = &usb2512bi_data, 575 }, { 576 .compatible = "microchip,usb2513b", 577 .data = &usb2513b_data, 578 }, { 579 .compatible = "microchip,usb2513bi", 580 .data = &usb2513bi_data, 581 }, { 582 .compatible = "microchip,usb2514b", 583 .data = &usb2514b_data, 584 }, { 585 .compatible = "microchip,usb2514bi", 586 .data = &usb2514bi_data, 587 }, { 588 .compatible = "microchip,usb2517", 589 .data = &usb2517_data, 590 }, { 591 .compatible = "microchip,usb2517i", 592 .data = &usb2517i_data, 593 }, { 594 /* sentinel */ 595 } 596 }; 597 MODULE_DEVICE_TABLE(of, usb251xb_of_match); 598 #else /* CONFIG_OF */ 599 static int usb251xb_get_ofdata(struct usb251xb *hub, 600 struct usb251xb_data *data) 601 { 602 return 0; 603 } 604 #endif /* CONFIG_OF */ 605 606 static int usb251xb_probe(struct usb251xb *hub) 607 { 608 struct device *dev = hub->dev; 609 struct device_node *np = dev->of_node; 610 const struct of_device_id *of_id = of_match_device(usb251xb_of_match, 611 dev); 612 int err; 613 614 if (np) { 615 err = usb251xb_get_ofdata(hub, 616 (struct usb251xb_data *)of_id->data); 617 if (err) { 618 dev_err(dev, "failed to get ofdata: %d\n", err); 619 return err; 620 } 621 } 622 623 err = usb251xb_connect(hub); 624 if (err) { 625 dev_err(dev, "Failed to connect hub (%d)\n", err); 626 return err; 627 } 628 629 dev_info(dev, "Hub probed successfully\n"); 630 631 return 0; 632 } 633 634 static int usb251xb_i2c_probe(struct i2c_client *i2c, 635 const struct i2c_device_id *id) 636 { 637 struct usb251xb *hub; 638 639 hub = devm_kzalloc(&i2c->dev, sizeof(struct usb251xb), GFP_KERNEL); 640 if (!hub) 641 return -ENOMEM; 642 643 i2c_set_clientdata(i2c, hub); 644 hub->dev = &i2c->dev; 645 hub->i2c = i2c; 646 647 return usb251xb_probe(hub); 648 } 649 650 static const struct i2c_device_id usb251xb_id[] = { 651 { "usb2512b", 0 }, 652 { "usb2512bi", 0 }, 653 { "usb2513b", 0 }, 654 { "usb2513bi", 0 }, 655 { "usb2514b", 0 }, 656 { "usb2514bi", 0 }, 657 { "usb2517", 0 }, 658 { "usb2517i", 0 }, 659 { /* sentinel */ } 660 }; 661 MODULE_DEVICE_TABLE(i2c, usb251xb_id); 662 663 static struct i2c_driver usb251xb_i2c_driver = { 664 .driver = { 665 .name = DRIVER_NAME, 666 .of_match_table = of_match_ptr(usb251xb_of_match), 667 }, 668 .probe = usb251xb_i2c_probe, 669 .id_table = usb251xb_id, 670 }; 671 672 module_i2c_driver(usb251xb_i2c_driver); 673 674 MODULE_AUTHOR("Richard Leitner <richard.leitner@skidata.com>"); 675 MODULE_DESCRIPTION("USB251x/xBi USB 2.0 Hub Controller Driver"); 676 MODULE_LICENSE("GPL"); 677