Lines Matching +full:swap +full:- +full:dx +full:- +full:lanes
1 // SPDX-License-Identifier: GPL-2.0+
3 * Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller
9 * a not-accepted patch by Fabien Lahoudere, see:
110 #define DRIVER_DESC "Microchip USB 2.0 Hi-Speed Hub Controller"
234 if (dev->type == &i2c_adapter_type) {
244 struct gpio_chip *gc = gpiod_to_chip(hub->gpio_reset);
245 struct i2c_adapter *adap = hub->i2c->adapter;
248 if (!hub->gpio_reset)
252 return -EINVAL;
254 ret = usb251xb_check_dev_children(&adap->dev, gc->parent);
256 dev_err(hub->dev, "Reset GPIO chip is at the same i2c-bus\n");
257 return -EINVAL;
271 if (!hub->gpio_reset)
274 i2c_lock_bus(hub->i2c->adapter, I2C_LOCK_SEGMENT);
276 gpiod_set_value_cansleep(hub->gpio_reset, 1);
278 gpiod_set_value_cansleep(hub->gpio_reset, 0);
283 i2c_unlock_bus(hub->i2c->adapter, I2C_LOCK_SEGMENT);
288 struct device *dev = hub->dev;
294 if (hub->skip_config) {
301 err = i2c_smbus_write_i2c_block_data(hub->i2c,
310 i2c_wb[USB251XB_ADDR_VENDOR_ID_MSB] = (hub->vendor_id >> 8) & 0xFF;
311 i2c_wb[USB251XB_ADDR_VENDOR_ID_LSB] = hub->vendor_id & 0xFF;
312 i2c_wb[USB251XB_ADDR_PRODUCT_ID_MSB] = (hub->product_id >> 8) & 0xFF;
313 i2c_wb[USB251XB_ADDR_PRODUCT_ID_LSB] = hub->product_id & 0xFF;
314 i2c_wb[USB251XB_ADDR_DEVICE_ID_MSB] = (hub->device_id >> 8) & 0xFF;
315 i2c_wb[USB251XB_ADDR_DEVICE_ID_LSB] = hub->device_id & 0xFF;
316 i2c_wb[USB251XB_ADDR_CONFIG_DATA_1] = hub->conf_data1;
317 i2c_wb[USB251XB_ADDR_CONFIG_DATA_2] = hub->conf_data2;
318 i2c_wb[USB251XB_ADDR_CONFIG_DATA_3] = hub->conf_data3;
319 i2c_wb[USB251XB_ADDR_NON_REMOVABLE_DEVICES] = hub->non_rem_dev;
320 i2c_wb[USB251XB_ADDR_PORT_DISABLE_SELF] = hub->port_disable_sp;
321 i2c_wb[USB251XB_ADDR_PORT_DISABLE_BUS] = hub->port_disable_bp;
322 i2c_wb[USB251XB_ADDR_MAX_POWER_SELF] = hub->max_power_sp;
323 i2c_wb[USB251XB_ADDR_MAX_POWER_BUS] = hub->max_power_bp;
324 i2c_wb[USB251XB_ADDR_MAX_CURRENT_SELF] = hub->max_current_sp;
325 i2c_wb[USB251XB_ADDR_MAX_CURRENT_BUS] = hub->max_current_bp;
326 i2c_wb[USB251XB_ADDR_POWER_ON_TIME] = hub->power_on_time;
327 i2c_wb[USB251XB_ADDR_LANGUAGE_ID_HIGH] = (hub->lang_id >> 8) & 0xFF;
328 i2c_wb[USB251XB_ADDR_LANGUAGE_ID_LOW] = hub->lang_id & 0xFF;
329 i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING_LEN] = hub->manufacturer_len;
330 i2c_wb[USB251XB_ADDR_PRODUCT_STRING_LEN] = hub->product_len;
331 i2c_wb[USB251XB_ADDR_SERIAL_STRING_LEN] = hub->serial_len;
332 memcpy(&i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING], hub->manufacturer,
334 memcpy(&i2c_wb[USB251XB_ADDR_SERIAL_STRING], hub->serial,
336 memcpy(&i2c_wb[USB251XB_ADDR_PRODUCT_STRING], hub->product,
338 i2c_wb[USB251XB_ADDR_BATTERY_CHARGING_ENABLE] = hub->bat_charge_en;
339 i2c_wb[USB251XB_ADDR_BOOST_UP] = hub->boost_up;
340 i2c_wb[USB251XB_ADDR_BOOST_57] = hub->boost_57;
341 i2c_wb[USB251XB_ADDR_BOOST_14] = hub->boost_14;
342 i2c_wb[USB251XB_ADDR_PORT_SWAP] = hub->port_swap;
343 i2c_wb[USB251XB_ADDR_PORT_MAP_12] = hub->port_map12;
344 i2c_wb[USB251XB_ADDR_PORT_MAP_34] = hub->port_map34;
345 i2c_wb[USB251XB_ADDR_PORT_MAP_56] = hub->port_map56;
346 i2c_wb[USB251XB_ADDR_PORT_MAP_7] = hub->port_map7;
365 err = i2c_smbus_write_i2c_block_data(hub->i2c, offset,
384 struct device *dev = hub->dev;
387 of_property_for_each_u32(dev->of_node, prop_name, port) {
398 struct device *dev = hub->dev;
399 struct device_node *np = dev->of_node;
407 return -ENODEV;
410 hub->skip_config = of_property_read_bool(np, "skip-config");
412 hub->gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
413 if (IS_ERR(hub->gpio_reset))
414 return dev_err_probe(dev, PTR_ERR(hub->gpio_reset),
417 if (of_property_read_u16(np, "vendor-id", &hub->vendor_id))
418 hub->vendor_id = USB251XB_DEF_VENDOR_ID;
420 if (of_property_read_u16(np, "product-id", &hub->product_id))
421 hub->product_id = data->product_id;
423 if (of_property_read_u16(np, "device-id", &hub->device_id))
424 hub->device_id = USB251XB_DEF_DEVICE_ID;
426 hub->conf_data1 = USB251XB_DEF_CONFIG_DATA_1;
427 if (of_property_read_bool(np, "self-powered")) {
428 hub->conf_data1 |= BIT(7);
430 /* Configure Over-Current sens when self-powered */
431 hub->conf_data1 &= ~BIT(2);
432 if (of_property_read_bool(np, "ganged-sensing"))
433 hub->conf_data1 &= ~BIT(1);
434 else if (of_property_read_bool(np, "individual-sensing"))
435 hub->conf_data1 |= BIT(1);
436 } else if (of_property_read_bool(np, "bus-powered")) {
437 hub->conf_data1 &= ~BIT(7);
439 /* Disable Over-Current sense when bus-powered */
440 hub->conf_data1 |= BIT(2);
443 if (of_property_read_bool(np, "disable-hi-speed"))
444 hub->conf_data1 |= BIT(5);
446 if (of_property_read_bool(np, "multi-tt"))
447 hub->conf_data1 |= BIT(4);
448 else if (of_property_read_bool(np, "single-tt"))
449 hub->conf_data1 &= ~BIT(4);
451 if (of_property_read_bool(np, "disable-eop"))
452 hub->conf_data1 |= BIT(3);
454 if (of_property_read_bool(np, "individual-port-switching"))
455 hub->conf_data1 |= BIT(0);
456 else if (of_property_read_bool(np, "ganged-port-switching"))
457 hub->conf_data1 &= ~BIT(0);
459 hub->conf_data2 = USB251XB_DEF_CONFIG_DATA_2;
460 if (of_property_read_bool(np, "dynamic-power-switching"))
461 hub->conf_data2 |= BIT(7);
463 if (!of_property_read_u32(np, "oc-delay-us", &property_u32)) {
466 hub->conf_data2 &= ~BIT(5);
467 hub->conf_data2 &= ~BIT(4);
470 hub->conf_data2 &= ~BIT(5);
471 hub->conf_data2 |= BIT(4);
474 hub->conf_data2 |= BIT(5);
475 hub->conf_data2 |= BIT(4);
478 hub->conf_data2 |= BIT(5);
479 hub->conf_data2 &= ~BIT(4);
483 if (of_property_read_bool(np, "compound-device"))
484 hub->conf_data2 |= BIT(3);
486 hub->conf_data3 = USB251XB_DEF_CONFIG_DATA_3;
487 if (of_property_read_bool(np, "port-mapping-mode"))
488 hub->conf_data3 |= BIT(3);
490 if (data->led_support && of_get_property(np, "led-usb-mode", NULL))
491 hub->conf_data3 &= ~BIT(1);
493 if (of_property_read_bool(np, "string-support"))
494 hub->conf_data3 |= BIT(0);
496 hub->non_rem_dev = USB251XB_DEF_NON_REMOVABLE_DEVICES;
497 usb251xb_get_ports_field(hub, "non-removable-ports", data->port_cnt,
498 true, &hub->non_rem_dev);
500 hub->port_disable_sp = USB251XB_DEF_PORT_DISABLE_SELF;
501 usb251xb_get_ports_field(hub, "sp-disabled-ports", data->port_cnt,
502 true, &hub->port_disable_sp);
504 hub->port_disable_bp = USB251XB_DEF_PORT_DISABLE_BUS;
505 usb251xb_get_ports_field(hub, "bp-disabled-ports", data->port_cnt,
506 true, &hub->port_disable_bp);
508 hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
509 if (!of_property_read_u32(np, "sp-max-total-current-microamp",
511 hub->max_power_sp = min_t(u8, property_u32 / 2000, 50);
513 hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
514 if (!of_property_read_u32(np, "bp-max-total-current-microamp",
516 hub->max_power_bp = min_t(u8, property_u32 / 2000, 255);
518 hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
519 if (!of_property_read_u32(np, "sp-max-removable-current-microamp",
521 hub->max_current_sp = min_t(u8, property_u32 / 2000, 50);
523 hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
524 if (!of_property_read_u32(np, "bp-max-removable-current-microamp",
526 hub->max_current_bp = min_t(u8, property_u32 / 2000, 255);
528 hub->power_on_time = USB251XB_DEF_POWER_ON_TIME;
529 if (!of_property_read_u32(np, "power-on-time-ms", &property_u32))
530 hub->power_on_time = min_t(u8, property_u32 / 2, 255);
532 if (of_property_read_u16(np, "language-id", &hub->lang_id))
533 hub->lang_id = USB251XB_DEF_LANGUAGE_ID;
535 if (of_property_read_u8(np, "boost-up", &hub->boost_up))
536 hub->boost_up = USB251XB_DEF_BOOST_UP;
541 hub->manufacturer_len = strlen(str) & 0xFF;
542 memset(hub->manufacturer, 0, USB251XB_STRING_BUFSIZE);
545 (wchar_t *)hub->manufacturer,
549 strscpy(str, cproperty_char ? : data->product_str, sizeof(str));
550 hub->product_len = strlen(str) & 0xFF;
551 memset(hub->product, 0, USB251XB_STRING_BUFSIZE);
554 (wchar_t *)hub->product,
560 hub->serial_len = strlen(str) & 0xFF;
561 memset(hub->serial, 0, USB251XB_STRING_BUFSIZE);
564 (wchar_t *)hub->serial,
568 * The datasheet documents the register as 'Port Swap' but in real the
571 hub->port_swap = USB251XB_DEF_PORT_SWAP;
572 usb251xb_get_ports_field(hub, "swap-dx-lanes", data->port_cnt,
573 false, &hub->port_swap);
578 hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE;
579 hub->boost_57 = USB251XB_DEF_BOOST_57;
580 hub->boost_14 = USB251XB_DEF_BOOST_14;
581 hub->port_map12 = USB251XB_DEF_PORT_MAP_12;
582 hub->port_map34 = USB251XB_DEF_PORT_MAP_34;
583 hub->port_map56 = USB251XB_DEF_PORT_MAP_56;
584 hub->port_map7 = USB251XB_DEF_PORT_MAP_7;
627 regulator_disable(hub->vdd);
632 struct device *dev = hub->dev;
633 struct device_node *np = dev->of_node;
644 * usb251x SMBus-slave SCL lane is muxed with CFG_SEL0 pin. So if anyone
648 * value without SMBus-slave interface activation. If the hub
649 * accidentally gets this mode, this will cause the driver SMBus-
650 * functions failure. Normally we could just lock the SMBus-segment the
651 * hub i2c-interface resides for the device-specific reset timing. But
653 * placed at the same i2c-bus segment. In this case an error should be
656 * the i2c-bus segment (it will cause a deadlock).
662 hub->vdd = devm_regulator_get(dev, "vdd");
663 if (IS_ERR(hub->vdd))
664 return PTR_ERR(hub->vdd);
666 err = regulator_enable(hub->vdd);
690 hub = devm_kzalloc(&i2c->dev, sizeof(struct usb251xb), GFP_KERNEL);
692 return -ENOMEM;
695 hub->dev = &i2c->dev;
696 hub->i2c = i2c;
706 return regulator_disable(hub->vdd);
715 err = regulator_enable(hub->vdd);