Lines Matching +full:overrun +full:- +full:throttle +full:- +full:ms
1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2009 - 2013
7 * Copyright (C) 1999 - 2001
8 * Greg Kroah-Hartman (greg@kroah.com)
13 * See Documentation/usb/usb-serial.rst for more information on using this
16 * See http://ftdi-usb-sio.sourceforge.net for up to date testing info
24 /* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
28 assimilated :-) */
47 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober …
58 u16 last_set_data_value; /* the last data state set - needed for doing
68 speed_t force_baud; /* if non-zero, force the baud rate to
70 int force_rtscts; /* if non-zero, force RTS-CTS to always
127 * - it can support MUCH higher baudrates; up to:
131 * - it has a two byte status code.
132 * - it returns characters every 16ms (the FTDI does it every 40ms)
145 * /sys/bus/usb-serial/drivers/ftdi_sio/new_id and send a patch or report.
1021 /* ICP DAS I-756xU devices */
1037 /* U-Blox devices */
1059 [FTX] = "FT-X"
1116 .throttle = usb_serial_generic_throttle,
1198 /* hi-speed baud rate is 10-bit sampling instead of 16-bit */ in ftdi_2232h_baud_base_to_divisor()
1229 struct device *dev = &port->dev; in update_mctrl()
1234 dev_dbg(dev, "%s - DTR|RTS not being set|cleared\n", __func__); in update_mctrl()
1248 rv = usb_control_msg(port->serial->dev, in update_mctrl()
1249 usb_sndctrlpipe(port->serial->dev, 0), in update_mctrl()
1252 value, priv->interface, in update_mctrl()
1261 dev_dbg(dev, "%s - DTR %s, RTS %s\n", __func__, in update_mctrl()
1265 priv->last_dtr_rts = (priv->last_dtr_rts & ~clear) | set; in update_mctrl()
1275 struct device *dev = &port->dev; in get_ftdi_divisor()
1281 dev_dbg(dev, "%s - tty_get_baud_rate reports speed %d\n", __func__, baud); in get_ftdi_divisor()
1284 * Observe deprecated async-compatible custom_divisor hack, update in get_ftdi_divisor()
1288 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) && in get_ftdi_divisor()
1289 (priv->custom_divisor)) { in get_ftdi_divisor()
1290 baud = priv->baud_base / priv->custom_divisor; in get_ftdi_divisor()
1291 dev_dbg(dev, "%s - custom divisor %d sets baud rate to %d\n", in get_ftdi_divisor()
1292 __func__, priv->custom_divisor, baud); in get_ftdi_divisor()
1297 switch (priv->chip_type) { in get_ftdi_divisor()
1312 dev_dbg(dev, "%s - Baudrate (%d) requested is not supported\n", in get_ftdi_divisor()
1323 dev_dbg(dev, "%s - Baud rate too high!\n", __func__); in get_ftdi_divisor()
1332 case FTX: /* FT-X series */ in get_ftdi_divisor()
1335 port->serial->dev->descriptor.idProduct); in get_ftdi_divisor()
1346 dev_dbg(dev, "%s - Baud rate too high!\n", __func__); in get_ftdi_divisor()
1360 dev_dbg(dev, "%s - Baud rate too high!\n", __func__); in get_ftdi_divisor()
1366 } /* priv->chip_type */ in get_ftdi_divisor()
1369 dev_dbg(dev, "%s - Baud rate set to %d (divisor 0x%lX) on chip %s\n", in get_ftdi_divisor()
1371 ftdi_chip_name[priv->chip_type]); in get_ftdi_divisor()
1389 if ((priv->chip_type == FT2232C) || (priv->chip_type == FT2232H) || in change_speed()
1390 (priv->chip_type == FT4232H) || (priv->chip_type == FT232H)) { in change_speed()
1393 index = (u16)((index << 8) | priv->interface); in change_speed()
1396 rv = usb_control_msg(port->serial->dev, in change_speed()
1397 usb_sndctrlpipe(port->serial->dev, 0), in change_speed()
1408 struct usb_device *udev = port->serial->dev; in write_latency_timer()
1410 int l = priv->latency; in write_latency_timer()
1412 if (priv->chip_type == SIO || priv->chip_type == FT8U232AM) in write_latency_timer()
1413 return -EINVAL; in write_latency_timer()
1415 if (priv->flags & ASYNC_LOW_LATENCY) in write_latency_timer()
1418 dev_dbg(&port->dev, "%s: setting latency timer = %i\n", __func__, l); in write_latency_timer()
1424 l, priv->interface, in write_latency_timer()
1427 dev_err(&port->dev, "Unable to write latency timer: %i\n", rv); in write_latency_timer()
1434 struct usb_device *udev = port->serial->dev; in _read_latency_timer()
1440 return -ENOMEM; in _read_latency_timer()
1446 0, priv->interface, in _read_latency_timer()
1450 rv = -EIO; in _read_latency_timer()
1465 if (priv->chip_type == SIO || priv->chip_type == FT8U232AM) in read_latency_timer()
1466 return -EINVAL; in read_latency_timer()
1470 dev_err(&port->dev, "Unable to read latency timer: %i\n", rv); in read_latency_timer()
1474 priv->latency = rv; in read_latency_timer()
1482 struct usb_serial_port *port = tty->driver_data; in get_serial_info()
1485 ss->flags = priv->flags; in get_serial_info()
1486 ss->baud_base = priv->baud_base; in get_serial_info()
1487 ss->custom_divisor = priv->custom_divisor; in get_serial_info()
1494 struct usb_serial_port *port = tty->driver_data; in set_serial_info()
1498 mutex_lock(&priv->cfg_lock); in set_serial_info()
1504 if ((ss->flags ^ priv->flags) & ~ASYNC_USR_MASK) { in set_serial_info()
1505 mutex_unlock(&priv->cfg_lock); in set_serial_info()
1506 return -EPERM; in set_serial_info()
1508 priv->flags = ((priv->flags & ~ASYNC_USR_MASK) | in set_serial_info()
1509 (ss->flags & ASYNC_USR_MASK)); in set_serial_info()
1510 priv->custom_divisor = ss->custom_divisor; in set_serial_info()
1514 if (ss->baud_base != priv->baud_base) { in set_serial_info()
1515 mutex_unlock(&priv->cfg_lock); in set_serial_info()
1516 return -EINVAL; in set_serial_info()
1519 /* Make the changes - these are privileged changes! */ in set_serial_info()
1521 priv->flags = ((priv->flags & ~ASYNC_FLAGS) | in set_serial_info()
1522 (ss->flags & ASYNC_FLAGS)); in set_serial_info()
1523 priv->custom_divisor = ss->custom_divisor; in set_serial_info()
1528 if ((priv->flags ^ old_priv.flags) & ASYNC_SPD_MASK || in set_serial_info()
1529 ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && in set_serial_info()
1530 priv->custom_divisor != old_priv.custom_divisor)) { in set_serial_info()
1533 if (priv->flags & ASYNC_SPD_MASK) in set_serial_info()
1534 dev_warn_ratelimited(&port->dev, "use of SPD flags is deprecated\n"); in set_serial_info()
1538 mutex_unlock(&priv->cfg_lock); in set_serial_info()
1548 if (priv->transmit_empty) in get_lsr_info()
1552 return -EFAULT; in get_lsr_info()
1561 struct usb_serial *serial = port->serial; in ftdi_determine_type()
1562 struct usb_device *udev = serial->dev; in ftdi_determine_type()
1567 priv->baud_base = 48000000 / 2; in ftdi_determine_type()
1569 version = le16_to_cpu(udev->descriptor.bcdDevice); in ftdi_determine_type()
1570 interfaces = udev->actconfig->desc.bNumInterfaces; in ftdi_determine_type()
1571 dev_dbg(&port->dev, "%s: bcdDevice = 0x%x, bNumInterfaces = %u\n", __func__, in ftdi_determine_type()
1574 struct usb_interface *intf = serial->interface; in ftdi_determine_type()
1575 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; in ftdi_determine_type()
1579 priv->chip_type = FT4232H; in ftdi_determine_type()
1580 /* Hi-speed - baud clock runs at 120MHz */ in ftdi_determine_type()
1581 priv->baud_base = 120000000 / 2; in ftdi_determine_type()
1583 priv->chip_type = FT2232H; in ftdi_determine_type()
1584 /* Hi-speed - baud clock runs at 120MHz */ in ftdi_determine_type()
1585 priv->baud_base = 120000000 / 2; in ftdi_determine_type()
1587 priv->chip_type = FT2232C; in ftdi_determine_type()
1591 priv->interface = INTERFACE_A; in ftdi_determine_type()
1593 priv->interface = INTERFACE_B; in ftdi_determine_type()
1595 priv->interface = INTERFACE_C; in ftdi_determine_type()
1597 priv->interface = INTERFACE_D; in ftdi_determine_type()
1599 /* BM-type devices have a bug where bcdDevice gets set in ftdi_determine_type()
1602 dev_dbg(&port->dev, in ftdi_determine_type()
1603 "%s: something fishy - bcdDevice too low for multi-interface device\n", in ftdi_determine_type()
1608 priv->chip_type = SIO; in ftdi_determine_type()
1609 priv->baud_base = 12000000 / 16; in ftdi_determine_type()
1612 priv->chip_type = FT8U232AM; in ftdi_determine_type()
1618 if (udev->descriptor.iSerialNumber == 0 && in ftdi_determine_type()
1620 dev_dbg(&port->dev, in ftdi_determine_type()
1623 priv->chip_type = FT232BM; in ftdi_determine_type()
1627 priv->chip_type = FT232BM; in ftdi_determine_type()
1630 priv->chip_type = FT232RL; in ftdi_determine_type()
1633 priv->chip_type = FT232H; in ftdi_determine_type()
1635 /* Assume it's an FT-X series device */ in ftdi_determine_type()
1636 priv->chip_type = FTX; in ftdi_determine_type()
1639 dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]); in ftdi_determine_type()
1651 struct usb_interface *interface = port->serial->interface; in ftdi_set_max_packet_size()
1656 num_endpoints = interface->cur_altsetting->desc.bNumEndpoints; in ftdi_set_max_packet_size()
1662 * with an endpoint size of 0 - not good. In this case, we in ftdi_set_max_packet_size()
1667 ep_desc = &interface->cur_altsetting->endpoint[i].desc; in ftdi_set_max_packet_size()
1668 if (!ep_desc->wMaxPacketSize) { in ftdi_set_max_packet_size()
1669 ep_desc->wMaxPacketSize = cpu_to_le16(0x40); in ftdi_set_max_packet_size()
1670 dev_warn(&port->dev, "Overriding wMaxPacketSize on endpoint %d\n", in ftdi_set_max_packet_size()
1676 priv->max_packet_size = usb_endpoint_maxp(ep_desc); in ftdi_set_max_packet_size()
1691 if (priv->flags & ASYNC_LOW_LATENCY) in latency_timer_show()
1694 return sprintf(buf, "%i\n", priv->latency); in latency_timer_show()
1708 return -EINVAL; in latency_timer_store()
1710 priv->latency = v; in latency_timer_store()
1713 return -EIO; in latency_timer_store()
1725 struct usb_device *udev = port->serial->dev; in event_char_store()
1730 return -EINVAL; in event_char_store()
1732 dev_dbg(&port->dev, "%s: setting event char = 0x%03x\n", __func__, v); in event_char_store()
1738 v, priv->interface, in event_char_store()
1741 dev_dbg(&port->dev, "Unable to write event character: %i\n", rv); in event_char_store()
1742 return -EIO; in event_char_store()
1756 if (priv->chip_type != SIO) { in create_sysfs_attrs()
1757 dev_dbg(&port->dev, "sysfs attributes for %s\n", ftdi_chip_name[priv->chip_type]); in create_sysfs_attrs()
1758 retval = device_create_file(&port->dev, &dev_attr_event_char); in create_sysfs_attrs()
1760 (priv->chip_type == FT232BM || in create_sysfs_attrs()
1761 priv->chip_type == FT2232C || in create_sysfs_attrs()
1762 priv->chip_type == FT232RL || in create_sysfs_attrs()
1763 priv->chip_type == FT2232H || in create_sysfs_attrs()
1764 priv->chip_type == FT4232H || in create_sysfs_attrs()
1765 priv->chip_type == FT232H || in create_sysfs_attrs()
1766 priv->chip_type == FTX)) { in create_sysfs_attrs()
1767 retval = device_create_file(&port->dev, in create_sysfs_attrs()
1779 if (priv->chip_type != SIO) { in remove_sysfs_attrs()
1780 device_remove_file(&port->dev, &dev_attr_event_char); in remove_sysfs_attrs()
1781 if (priv->chip_type == FT232BM || in remove_sysfs_attrs()
1782 priv->chip_type == FT2232C || in remove_sysfs_attrs()
1783 priv->chip_type == FT232RL || in remove_sysfs_attrs()
1784 priv->chip_type == FT2232H || in remove_sysfs_attrs()
1785 priv->chip_type == FT4232H || in remove_sysfs_attrs()
1786 priv->chip_type == FT232H || in remove_sysfs_attrs()
1787 priv->chip_type == FTX) { in remove_sysfs_attrs()
1788 device_remove_file(&port->dev, &dev_attr_latency_timer); in remove_sysfs_attrs()
1799 struct usb_serial *serial = port->serial; in ftdi_set_bitmode()
1803 result = usb_autopm_get_interface(serial->interface); in ftdi_set_bitmode()
1807 val = (mode << 8) | (priv->gpio_output << 4) | priv->gpio_value; in ftdi_set_bitmode()
1808 result = usb_control_msg(serial->dev, in ftdi_set_bitmode()
1809 usb_sndctrlpipe(serial->dev, 0), in ftdi_set_bitmode()
1812 priv->interface, NULL, 0, WDR_TIMEOUT); in ftdi_set_bitmode()
1814 dev_err(&serial->interface->dev, in ftdi_set_bitmode()
1819 usb_autopm_put_interface(serial->interface); in ftdi_set_bitmode()
1833 priv->gpio_output = 0; in ftdi_exit_cbus_mode()
1834 priv->gpio_value = 0; in ftdi_exit_cbus_mode()
1844 if (priv->gpio_altfunc & BIT(offset)) in ftdi_gpio_request()
1845 return -ENODEV; in ftdi_gpio_request()
1847 mutex_lock(&priv->gpio_lock); in ftdi_gpio_request()
1848 if (!priv->gpio_used) { in ftdi_gpio_request()
1850 priv->gpio_output = 0x00; in ftdi_gpio_request()
1851 priv->gpio_value = 0x00; in ftdi_gpio_request()
1854 mutex_unlock(&priv->gpio_lock); in ftdi_gpio_request()
1858 priv->gpio_used = true; in ftdi_gpio_request()
1860 mutex_unlock(&priv->gpio_lock); in ftdi_gpio_request()
1868 struct usb_serial *serial = port->serial; in ftdi_read_cbus_pins()
1872 result = usb_autopm_get_interface(serial->interface); in ftdi_read_cbus_pins()
1878 usb_autopm_put_interface(serial->interface); in ftdi_read_cbus_pins()
1879 return -ENOMEM; in ftdi_read_cbus_pins()
1882 result = usb_control_msg(serial->dev, in ftdi_read_cbus_pins()
1883 usb_rcvctrlpipe(serial->dev, 0), in ftdi_read_cbus_pins()
1886 priv->interface, buf, 1, WDR_TIMEOUT); in ftdi_read_cbus_pins()
1889 result = -EIO; in ftdi_read_cbus_pins()
1895 usb_autopm_put_interface(serial->interface); in ftdi_read_cbus_pins()
1917 mutex_lock(&priv->gpio_lock); in ftdi_gpio_set()
1920 priv->gpio_value |= BIT(gpio); in ftdi_gpio_set()
1922 priv->gpio_value &= ~BIT(gpio); in ftdi_gpio_set()
1926 mutex_unlock(&priv->gpio_lock); in ftdi_gpio_set()
1950 mutex_lock(&priv->gpio_lock); in ftdi_gpio_set_multiple()
1952 priv->gpio_value &= ~(*mask); in ftdi_gpio_set_multiple()
1953 priv->gpio_value |= *bits & *mask; in ftdi_gpio_set_multiple()
1956 mutex_unlock(&priv->gpio_lock); in ftdi_gpio_set_multiple()
1964 return !(priv->gpio_output & BIT(gpio)); in ftdi_gpio_direction_get()
1973 mutex_lock(&priv->gpio_lock); in ftdi_gpio_direction_input()
1975 priv->gpio_output &= ~BIT(gpio); in ftdi_gpio_direction_input()
1978 mutex_unlock(&priv->gpio_lock); in ftdi_gpio_direction_input()
1990 mutex_lock(&priv->gpio_lock); in ftdi_gpio_direction_output()
1992 priv->gpio_output |= BIT(gpio); in ftdi_gpio_direction_output()
1994 priv->gpio_value |= BIT(gpio); in ftdi_gpio_direction_output()
1996 priv->gpio_value &= ~BIT(gpio); in ftdi_gpio_direction_output()
2000 mutex_unlock(&priv->gpio_lock); in ftdi_gpio_direction_output()
2011 return -EINVAL; in ftdi_read_eeprom()
2013 return -EINVAL; in ftdi_read_eeprom()
2019 rv = usb_control_msg(serial->dev, in ftdi_read_eeprom()
2020 usb_rcvctrlpipe(serial->dev, 0), in ftdi_read_eeprom()
2027 return -EIO; in ftdi_read_eeprom()
2048 return -ENOMEM; in ftdi_gpio_init_ft232h()
2050 ret = ftdi_read_eeprom(port->serial, buf, 0x1a, 4); in ftdi_gpio_init_ft232h()
2057 * 0x1a: X- (upper nibble -> AC5) in ftdi_gpio_init_ft232h()
2058 * 0x1b: -X (lower nibble -> AC6) in ftdi_gpio_init_ft232h()
2059 * 0x1c: XX (upper nibble -> AC9 | lower nibble -> AC8) in ftdi_gpio_init_ft232h()
2063 priv->gc.ngpio = 4; in ftdi_gpio_init_ft232h()
2064 priv->gpio_altfunc = 0xff; in ftdi_gpio_init_ft232h()
2066 for (i = 0; i < priv->gc.ngpio; ++i) { in ftdi_gpio_init_ft232h()
2068 priv->gpio_altfunc &= ~BIT(i); in ftdi_gpio_init_ft232h()
2088 return -ENOMEM; in ftdi_gpio_init_ft232r()
2090 ret = ftdi_read_eeprom(port->serial, buf, 0x14, 2); in ftdi_gpio_init_ft232r()
2095 dev_dbg(&port->dev, "cbus_config = 0x%04x\n", cbus_config); in ftdi_gpio_init_ft232r()
2097 priv->gc.ngpio = 4; in ftdi_gpio_init_ft232r()
2099 priv->gpio_altfunc = 0xff; in ftdi_gpio_init_ft232r()
2100 for (i = 0; i < priv->gc.ngpio; ++i) { in ftdi_gpio_init_ft232r()
2102 priv->gpio_altfunc &= ~BIT(i); in ftdi_gpio_init_ft232r()
2114 struct usb_serial *serial = port->serial; in ftdi_gpio_init_ftx()
2123 return -ENOMEM; in ftdi_gpio_init_ftx()
2131 priv->gc.ngpio = 4; in ftdi_gpio_init_ftx()
2134 priv->gpio_altfunc = 0xff; in ftdi_gpio_init_ftx()
2135 for (i = 0; i < priv->gc.ngpio; ++i) { in ftdi_gpio_init_ftx()
2137 priv->gpio_altfunc &= ~BIT(i); in ftdi_gpio_init_ftx()
2149 struct usb_serial *serial = port->serial; in ftdi_gpio_init()
2152 switch (priv->chip_type) { in ftdi_gpio_init()
2169 mutex_init(&priv->gpio_lock); in ftdi_gpio_init()
2171 priv->gc.label = "ftdi-cbus"; in ftdi_gpio_init()
2172 priv->gc.request = ftdi_gpio_request; in ftdi_gpio_init()
2173 priv->gc.get_direction = ftdi_gpio_direction_get; in ftdi_gpio_init()
2174 priv->gc.direction_input = ftdi_gpio_direction_input; in ftdi_gpio_init()
2175 priv->gc.direction_output = ftdi_gpio_direction_output; in ftdi_gpio_init()
2176 priv->gc.get = ftdi_gpio_get; in ftdi_gpio_init()
2177 priv->gc.set = ftdi_gpio_set; in ftdi_gpio_init()
2178 priv->gc.get_multiple = ftdi_gpio_get_multiple; in ftdi_gpio_init()
2179 priv->gc.set_multiple = ftdi_gpio_set_multiple; in ftdi_gpio_init()
2180 priv->gc.owner = THIS_MODULE; in ftdi_gpio_init()
2181 priv->gc.parent = &serial->interface->dev; in ftdi_gpio_init()
2182 priv->gc.base = -1; in ftdi_gpio_init()
2183 priv->gc.can_sleep = true; in ftdi_gpio_init()
2185 result = gpiochip_add_data(&priv->gc, port); in ftdi_gpio_init()
2187 priv->gpio_registered = true; in ftdi_gpio_init()
2196 if (priv->gpio_registered) { in ftdi_gpio_remove()
2197 gpiochip_remove(&priv->gc); in ftdi_gpio_remove()
2198 priv->gpio_registered = false; in ftdi_gpio_remove()
2201 if (priv->gpio_used) { in ftdi_gpio_remove()
2202 /* Exiting CBUS-mode does not reset pin states. */ in ftdi_gpio_remove()
2204 priv->gpio_used = false; in ftdi_gpio_remove()
2230 (struct ftdi_sio_quirk *)id->driver_info; in ftdi_sio_probe()
2232 if (quirk && quirk->probe) { in ftdi_sio_probe()
2233 int ret = quirk->probe(serial); in ftdi_sio_probe()
2238 usb_set_serial_data(serial, (void *)id->driver_info); in ftdi_sio_probe()
2246 const struct ftdi_sio_quirk *quirk = usb_get_serial_data(port->serial); in ftdi_sio_port_probe()
2251 return -ENOMEM; in ftdi_sio_port_probe()
2253 mutex_init(&priv->cfg_lock); in ftdi_sio_port_probe()
2255 if (quirk && quirk->port_probe) in ftdi_sio_port_probe()
2256 quirk->port_probe(priv); in ftdi_sio_port_probe()
2263 priv->latency = 16; in ftdi_sio_port_probe()
2269 dev_err(&port->serial->interface->dev, in ftdi_sio_port_probe()
2277 /* Setup for the USB-UIRT device, which requires hardwired
2282 priv->flags |= ASYNC_SPD_CUST; in ftdi_USB_UIRT_setup()
2283 priv->custom_divisor = 77; in ftdi_USB_UIRT_setup()
2284 priv->force_baud = 38400; in ftdi_USB_UIRT_setup()
2287 /* Setup for the HE-TIRA1 device, which requires hardwired
2288 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
2292 priv->flags |= ASYNC_SPD_CUST; in ftdi_HE_TIRA1_setup()
2293 priv->custom_divisor = 240; in ftdi_HE_TIRA1_setup()
2294 priv->force_baud = 38400; in ftdi_HE_TIRA1_setup()
2295 priv->force_rtscts = 1; in ftdi_HE_TIRA1_setup()
2299 * Module parameter to control latency timer for NDI FTDI-based USB devices.
2301 * to 1ms.
2305 /* Setup for the NDI FTDI-based USB devices, which requires hardwired
2312 struct usb_device *udev = serial->dev; in ftdi_NDI_device_setup()
2320 dev_dbg(&udev->dev, "%s setting NDI device latency to %d\n", __func__, latency); in ftdi_NDI_device_setup()
2321 dev_info(&udev->dev, "NDI device with a latency value of %d\n", latency); in ftdi_NDI_device_setup()
2332 * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
2338 struct usb_interface *intf = serial->interface; in ftdi_jtag_probe()
2339 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; in ftdi_jtag_probe()
2342 dev_info(&intf->dev, "Ignoring interface reserved for JTAG\n"); in ftdi_jtag_probe()
2343 return -ENODEV; in ftdi_jtag_probe()
2351 struct usb_device *udev = serial->dev; in ftdi_8u2232c_probe()
2353 if (udev->manufacturer && !strcmp(udev->manufacturer, "CALAO Systems")) in ftdi_8u2232c_probe()
2356 if (udev->product && in ftdi_8u2232c_probe()
2357 (!strcmp(udev->product, "Arrow USB Blaster") || in ftdi_8u2232c_probe()
2358 !strcmp(udev->product, "BeagleBone/XDS100V2") || in ftdi_8u2232c_probe()
2359 !strcmp(udev->product, "SNAP Connect E10"))) in ftdi_8u2232c_probe()
2367 * ST Micro Connect Lite are reserved for JTAG or other non-UART interfaces and
2370 * a conventional RS-232 UART.
2374 struct usb_interface *intf = serial->interface; in ftdi_stmclite_probe()
2375 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; in ftdi_stmclite_probe()
2378 dev_info(&intf->dev, "Ignoring interface reserved for JTAG\n"); in ftdi_stmclite_probe()
2379 return -ENODEV; in ftdi_stmclite_probe()
2400 struct usb_device *dev = port->serial->dev; in ftdi_open()
2408 priv->interface, NULL, 0, WDR_TIMEOUT); in ftdi_open()
2411 port->tty->termios - this would lose speed settings, etc. in ftdi_open()
2412 This is same behaviour as serial.c/rs_open() - Kuba */ in ftdi_open()
2427 if (usb_control_msg(port->serial->dev, in ftdi_dtr_rts()
2428 usb_sndctrlpipe(port->serial->dev, 0), in ftdi_dtr_rts()
2431 0, priv->interface, NULL, 0, in ftdi_dtr_rts()
2433 dev_err(&port->dev, "error from flowcontrol urb\n"); in ftdi_dtr_rts()
2459 if (priv->chip_type == SIO) { in ftdi_prepare_write_buffer()
2464 spin_lock_irqsave(&port->lock, flags); in ftdi_prepare_write_buffer()
2465 for (i = 0; i < size - 1; i += priv->max_packet_size) { in ftdi_prepare_write_buffer()
2466 len = min_t(int, size - i, priv->max_packet_size) - 1; in ftdi_prepare_write_buffer()
2467 c = kfifo_out(&port->write_fifo, &buffer[i + 1], len); in ftdi_prepare_write_buffer()
2470 port->icount.tx += c; in ftdi_prepare_write_buffer()
2474 spin_unlock_irqrestore(&port->lock, flags); in ftdi_prepare_write_buffer()
2476 count = kfifo_out_locked(&port->write_fifo, dest, size, in ftdi_prepare_write_buffer()
2477 &port->lock); in ftdi_prepare_write_buffer()
2478 port->icount.tx += count; in ftdi_prepare_write_buffer()
2495 dev_dbg(&port->dev, "malformed packet\n"); in ftdi_process_packet()
2503 if (status != priv->prev_status) { in ftdi_process_packet()
2504 char diff_status = status ^ priv->prev_status; in ftdi_process_packet()
2507 port->icount.cts++; in ftdi_process_packet()
2509 port->icount.dsr++; in ftdi_process_packet()
2511 port->icount.rng++; in ftdi_process_packet()
2515 port->icount.dcd++; in ftdi_process_packet()
2516 tty = tty_port_tty_get(&port->port); in ftdi_process_packet()
2523 wake_up_interruptible(&port->port.delta_msr_wait); in ftdi_process_packet()
2524 priv->prev_status = status; in ftdi_process_packet()
2529 priv->transmit_empty = 1; in ftdi_process_packet()
2531 priv->transmit_empty = 0; in ftdi_process_packet()
2538 * data payload to avoid over-reporting. in ftdi_process_packet()
2548 if (buf[1] & FTDI_RS_BI && buf[len - 1] == '\0') { in ftdi_process_packet()
2549 port->icount.brk++; in ftdi_process_packet()
2554 port->icount.parity++; in ftdi_process_packet()
2557 port->icount.frame++; in ftdi_process_packet()
2559 /* Overrun is special, not associated with a char */ in ftdi_process_packet()
2561 port->icount.overrun++; in ftdi_process_packet()
2562 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); in ftdi_process_packet()
2566 port->icount.rx += len - 2; in ftdi_process_packet()
2568 if (brkint || port->sysrq) { in ftdi_process_packet()
2570 if (brkint && i == len - 1) { in ftdi_process_packet()
2572 return len - 3; in ftdi_process_packet()
2577 tty_insert_flip_char(&port->port, buf[i], flag); in ftdi_process_packet()
2580 tty_insert_flip_string_fixed_flag(&port->port, buf + 2, flag, in ftdi_process_packet()
2581 len - 2); in ftdi_process_packet()
2584 return len - 2; in ftdi_process_packet()
2589 struct usb_serial_port *port = urb->context; in ftdi_process_read_urb()
2591 char *data = urb->transfer_buffer; in ftdi_process_read_urb()
2596 for (i = 0; i < urb->actual_length; i += priv->max_packet_size) { in ftdi_process_read_urb()
2597 len = min_t(int, urb->actual_length - i, priv->max_packet_size); in ftdi_process_read_urb()
2602 tty_flip_buffer_push(&port->port); in ftdi_process_read_urb()
2607 struct usb_serial_port *port = tty->driver_data; in ftdi_break_ctl()
2611 /* break_state = -1 to turn on break, and 0 to turn off break */ in ftdi_break_ctl()
2616 value = priv->last_set_data_value | FTDI_SIO_SET_BREAK; in ftdi_break_ctl()
2618 value = priv->last_set_data_value; in ftdi_break_ctl()
2620 if (usb_control_msg(port->serial->dev, in ftdi_break_ctl()
2621 usb_sndctrlpipe(port->serial->dev, 0), in ftdi_break_ctl()
2624 value , priv->interface, in ftdi_break_ctl()
2626 dev_err(&port->dev, "%s FAILED to enable/disable break state (state was %d)\n", in ftdi_break_ctl()
2630 dev_dbg(&port->dev, "%s break state is %d - urb is %d\n", __func__, in ftdi_break_ctl()
2649 /* old_termios contains the original termios settings and tty->termios contains
2656 struct usb_device *dev = port->serial->dev; in ftdi_set_termios()
2657 struct device *ddev = &port->dev; in ftdi_set_termios()
2659 struct ktermios *termios = &tty->termios; in ftdi_set_termios()
2660 unsigned int cflag = termios->c_cflag; in ftdi_set_termios()
2666 if (priv->force_baud && ((termios->c_cflag & CBAUD) != B0)) { in ftdi_set_termios()
2668 tty_encode_baud_rate(tty, priv->force_baud, in ftdi_set_termios()
2669 priv->force_baud); in ftdi_set_termios()
2672 /* Force RTS-CTS if this device requires it. */ in ftdi_set_termios()
2673 if (priv->force_rtscts) { in ftdi_set_termios()
2675 termios->c_cflag |= CRTSCTS; in ftdi_set_termios()
2695 termios->c_cflag &= ~CSIZE; in ftdi_set_termios()
2697 termios->c_cflag |= old_termios->c_cflag & CSIZE; in ftdi_set_termios()
2699 termios->c_cflag |= CS8; in ftdi_set_termios()
2702 cflag = termios->c_cflag; in ftdi_set_termios()
2707 if (old_termios->c_cflag == termios->c_cflag in ftdi_set_termios()
2708 && old_termios->c_ispeed == termios->c_ispeed in ftdi_set_termios()
2709 && old_termios->c_ospeed == termios->c_ospeed) in ftdi_set_termios()
2713 ftdi_sio_read_bulk_callback - need to examine what this means - in ftdi_set_termios()
2716 if ((old_termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB)) == in ftdi_set_termios()
2717 (termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB))) in ftdi_set_termios()
2754 - but is or'ed with this value */ in ftdi_set_termios()
2755 priv->last_set_data_value = value; in ftdi_set_termios()
2760 value , priv->interface, in ftdi_set_termios()
2773 0, priv->interface, in ftdi_set_termios()
2782 mutex_lock(&priv->cfg_lock); in ftdi_set_termios()
2785 mutex_unlock(&priv->cfg_lock); in ftdi_set_termios()
2787 if (old_termios && (old_termios->c_cflag & CBAUD) == B0) in ftdi_set_termios()
2792 /* Set hardware-assisted flow control */ in ftdi_set_termios()
2796 dev_dbg(&port->dev, "enabling rts/cts flow control\n"); in ftdi_set_termios()
2799 dev_dbg(&port->dev, "enabling xon/xoff flow control\n"); in ftdi_set_termios()
2803 dev_dbg(&port->dev, "disabling flow control\n"); in ftdi_set_termios()
2807 index |= priv->interface; in ftdi_set_termios()
2814 dev_err(&port->dev, "failed to set flow control: %d\n", ret); in ftdi_set_termios()
2818 * Get modem-control status.
2833 return -ENOMEM; in ftdi_get_modem_status()
2838 switch (priv->chip_type) { in ftdi_get_modem_status()
2853 ret = -EFAULT; in ftdi_get_modem_status()
2857 ret = usb_control_msg(port->serial->dev, in ftdi_get_modem_status()
2858 usb_rcvctrlpipe(port->serial->dev, 0), in ftdi_get_modem_status()
2861 0, priv->interface, in ftdi_get_modem_status()
2866 dev_err(&port->dev, "failed to get modem status: %d\n", ret); in ftdi_get_modem_status()
2868 ret = -EIO; in ftdi_get_modem_status()
2879 dev_dbg(&port->dev, "%s - 0x%02x%02x\n", __func__, status[0], in ftdi_get_modem_status()
2889 struct usb_serial_port *port = tty->driver_data; in ftdi_tiocmget()
2902 priv->last_dtr_rts; in ftdi_tiocmget()
2910 struct usb_serial_port *port = tty->driver_data; in ftdi_tiocmset()
2918 struct usb_serial_port *port = tty->driver_data; in ftdi_ioctl()
2928 return -ENOIOCTLCMD; in ftdi_ioctl()