Lines Matching refs:hub
242 static int usb251x_check_gpio_chip(struct usb251xb *hub)
244 struct gpio_chip *gc = gpiod_to_chip(hub->gpio_reset);
245 struct i2c_adapter *adap = hub->i2c->adapter;
248 if (!hub->gpio_reset)
256 dev_err(hub->dev, "Reset GPIO chip is at the same i2c-bus\n");
263 static int usb251x_check_gpio_chip(struct usb251xb *hub)
269 static void usb251xb_reset(struct usb251xb *hub)
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);
280 /* wait for hub recovery/stabilization */
283 i2c_unlock_bus(hub->i2c->adapter, I2C_LOCK_SEGMENT);
286 static int usb251xb_connect(struct usb251xb *hub)
288 struct device *dev = hub->dev;
294 if (hub->skip_config) {
295 dev_info(dev, "Skip hub configuration, only attach.\n");
299 usb251xb_reset(hub);
301 err = i2c_smbus_write_i2c_block_data(hub->i2c,
304 dev_err(dev, "attaching hub failed: %d\n", err);
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;
349 usb251xb_reset(hub);
356 /* The first data byte transferred tells the hub how many data
365 err = i2c_smbus_write_i2c_block_data(hub->i2c, offset,
380 static void usb251xb_get_ports_field(struct usb251xb *hub,
384 struct device *dev = hub->dev;
397 static int usb251xb_get_ofdata(struct usb251xb *hub,
400 struct device *dev = hub->dev;
412 hub->skip_config = of_property_read_bool(np, "skip-config");
414 hub->gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
415 if (IS_ERR(hub->gpio_reset))
416 return dev_err_probe(dev, PTR_ERR(hub->gpio_reset),
419 if (of_property_read_u16(np, "vendor-id", &hub->vendor_id))
420 hub->vendor_id = USB251XB_DEF_VENDOR_ID;
422 if (of_property_read_u16(np, "product-id", &hub->product_id))
423 hub->product_id = data->product_id;
425 if (of_property_read_u16(np, "device-id", &hub->device_id))
426 hub->device_id = USB251XB_DEF_DEVICE_ID;
428 hub->conf_data1 = USB251XB_DEF_CONFIG_DATA_1;
430 hub->conf_data1 |= BIT(7);
433 hub->conf_data1 &= ~BIT(2);
435 hub->conf_data1 &= ~BIT(1);
437 hub->conf_data1 |= BIT(1);
439 hub->conf_data1 &= ~BIT(7);
442 hub->conf_data1 |= BIT(2);
446 hub->conf_data1 |= BIT(5);
449 hub->conf_data1 |= BIT(4);
451 hub->conf_data1 &= ~BIT(4);
454 hub->conf_data1 |= BIT(3);
457 hub->conf_data1 |= BIT(0);
459 hub->conf_data1 &= ~BIT(0);
461 hub->conf_data2 = USB251XB_DEF_CONFIG_DATA_2;
463 hub->conf_data2 |= BIT(7);
468 hub->conf_data2 &= ~BIT(5);
469 hub->conf_data2 &= ~BIT(4);
472 hub->conf_data2 &= ~BIT(5);
473 hub->conf_data2 |= BIT(4);
476 hub->conf_data2 |= BIT(5);
477 hub->conf_data2 |= BIT(4);
480 hub->conf_data2 |= BIT(5);
481 hub->conf_data2 &= ~BIT(4);
486 hub->conf_data2 |= BIT(3);
488 hub->conf_data3 = USB251XB_DEF_CONFIG_DATA_3;
490 hub->conf_data3 |= BIT(3);
493 hub->conf_data3 &= ~BIT(1);
496 hub->conf_data3 |= BIT(0);
498 hub->non_rem_dev = USB251XB_DEF_NON_REMOVABLE_DEVICES;
499 usb251xb_get_ports_field(hub, "non-removable-ports", data->port_cnt,
500 true, &hub->non_rem_dev);
502 hub->port_disable_sp = USB251XB_DEF_PORT_DISABLE_SELF;
503 usb251xb_get_ports_field(hub, "sp-disabled-ports", data->port_cnt,
504 true, &hub->port_disable_sp);
506 hub->port_disable_bp = USB251XB_DEF_PORT_DISABLE_BUS;
507 usb251xb_get_ports_field(hub, "bp-disabled-ports", data->port_cnt,
508 true, &hub->port_disable_bp);
510 hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF;
513 hub->max_power_sp = min_t(u8, property_u32 / 2000, 50);
515 hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS;
518 hub->max_power_bp = min_t(u8, property_u32 / 2000, 255);
520 hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF;
523 hub->max_current_sp = min_t(u8, property_u32 / 2000, 50);
525 hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS;
528 hub->max_current_bp = min_t(u8, property_u32 / 2000, 255);
530 hub->power_on_time = USB251XB_DEF_POWER_ON_TIME;
532 hub->power_on_time = min_t(u8, property_u32 / 2, 255);
534 if (of_property_read_u16(np, "language-id", &hub->lang_id))
535 hub->lang_id = USB251XB_DEF_LANGUAGE_ID;
537 if (of_property_read_u8(np, "boost-up", &hub->boost_up))
538 hub->boost_up = USB251XB_DEF_BOOST_UP;
543 hub->manufacturer_len = strlen(str) & 0xFF;
544 memset(hub->manufacturer, 0, USB251XB_STRING_BUFSIZE);
547 (wchar_t *)hub->manufacturer,
552 hub->product_len = strlen(str) & 0xFF;
553 memset(hub->product, 0, USB251XB_STRING_BUFSIZE);
556 (wchar_t *)hub->product,
562 hub->serial_len = strlen(str) & 0xFF;
563 memset(hub->serial, 0, USB251XB_STRING_BUFSIZE);
566 (wchar_t *)hub->serial,
573 hub->port_swap = USB251XB_DEF_PORT_SWAP;
574 usb251xb_get_ports_field(hub, "swap-dx-lanes", data->port_cnt,
575 false, &hub->port_swap);
580 hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE;
581 hub->boost_57 = USB251XB_DEF_BOOST_57;
582 hub->boost_14 = USB251XB_DEF_BOOST_14;
583 hub->port_map12 = USB251XB_DEF_PORT_MAP_12;
584 hub->port_map34 = USB251XB_DEF_PORT_MAP_34;
585 hub->port_map56 = USB251XB_DEF_PORT_MAP_56;
586 hub->port_map7 = USB251XB_DEF_PORT_MAP_7;
627 struct usb251xb *hub = data;
629 regulator_disable(hub->vdd);
632 static int usb251xb_probe(struct usb251xb *hub)
634 struct device *dev = hub->dev;
640 err = usb251xb_get_ofdata(hub, usb_data);
649 * tries to work with the bus at the moment the hub reset is released,
651 * one of the config modes makes the hub loading a default registers
652 * value without SMBus-slave interface activation. If the hub
655 * hub i2c-interface resides for the device-specific reset timing. But
656 * the GPIO controller, which is used to handle the hub reset, might be
659 * reset state (it may affect the hub configuration) and we can't lock
662 err = usb251x_check_gpio_chip(hub);
666 hub->vdd = devm_regulator_get(dev, "vdd");
667 if (IS_ERR(hub->vdd))
668 return PTR_ERR(hub->vdd);
670 err = regulator_enable(hub->vdd);
675 usb251xb_regulator_disable_action, hub);
679 err = usb251xb_connect(hub);
681 dev_err(dev, "Failed to connect hub (%d)\n", err);
692 struct usb251xb *hub;
694 hub = devm_kzalloc(&i2c->dev, sizeof(struct usb251xb), GFP_KERNEL);
695 if (!hub)
698 i2c_set_clientdata(i2c, hub);
699 hub->dev = &i2c->dev;
700 hub->i2c = i2c;
702 return usb251xb_probe(hub);
708 struct usb251xb *hub = i2c_get_clientdata(client);
710 return regulator_disable(hub->vdd);
716 struct usb251xb *hub = i2c_get_clientdata(client);
719 err = regulator_enable(hub->vdd);
723 return usb251xb_connect(hub);