Lines Matching +full:usb +full:- +full:to +full:- +full:serial
1 // SPDX-License-Identifier: GPL-2.0
3 * Silicon Laboratories CP210x USB to RS232 serial adaptor driver
7 * Support to set flow control line levels using TIOCMGET and TIOCMSET
8 * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow
9 * control thanks to Munir Nassar nassarmu@real-time.com
20 #include <linux/usb.h>
22 #include <linux/usb/serial.h>
27 #define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver"
59 { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */
60 { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */
61 { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
62 { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
63 { USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */
65 { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */
67 { USB_DEVICE(0x0908, 0x0070) }, /* Siemens SCALANCE LPE-9000 USB Serial Console */
68 { USB_DEVICE(0x0908, 0x01FF) }, /* Siemens RUGGEDCOM USB Serial Console */
71 { USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */
76 { USB_DEVICE(0x0FDE, 0xCA05) }, /* OWL Wireless Electricity Monitor CM-160 */
78 { USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */
80 { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
84 { USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */
85 { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
87 { USB_DEVICE(0x10C4, 0x804E) }, /* Software Bisque Paramount ME build-in converter */
91 { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
92 { USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */
105 { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */
110 { USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */
111 { USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */
115 { USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
116 { USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
117 { USB_DEVICE(0x10C4, 0x81D7) }, /* IAI Corp. RCB-CV-USB USB to RS485 Adaptor */
118 { USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
122 { USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */
127 { USB_DEVICE(0x10C4, 0x82AA) }, /* Silicon Labs IFS-USB-DATACABLE used with Quint UPS */
136 { USB_DEVICE(0x10C4, 0x83AA) }, /* Mark-10 Digital Force Gauge */
139 { USB_DEVICE(0x10C4, 0x8414) }, /* Decagon USB Cable Adapter */
140 { USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */
141 { USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
148 { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */
149 { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */
151 { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */
152 { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */
153 { USB_DEVICE(0x10C4, 0x87ED) }, /* IMST USB-Stick for Smart Meter */
154 { USB_DEVICE(0x10C4, 0x8856) }, /* CEL EM357 ZigBee USB Stick - LR */
155 { USB_DEVICE(0x10C4, 0x8857) }, /* CEL EM357 ZigBee USB Stick */
156 { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */
157 { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */
166 { USB_DEVICE(0x10C4, 0x89FB) }, /* Qivicon ZigBee USB Radio Stick */
167 { USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
168 { USB_DEVICE(0x10C4, 0x8A5B) }, /* CEL EM3588 ZigBee USB Stick */
169 { USB_DEVICE(0x10C4, 0x8A5E) }, /* CEL EM3588 ZigBee USB Stick Long Range */
170 { USB_DEVICE(0x10C4, 0x8B34) }, /* Qivicon ZigBee USB Radio Stick */
173 { USB_DEVICE(0x10C4, 0xEA63) }, /* Silicon Labs Windows Update (CP2101-4/CP2102N) */
175 { USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */
182 { USB_DEVICE(0x10C5, 0xEA61) }, /* Silicon Labs MobiData GPRS USB Modem */
183 { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */
187 { USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */
189 { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */
190 { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */
191 { USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */
192 { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */
193 { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */
194 { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */
195 { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */
198 { USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */
199 { USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */
200 …{ USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Powe…
201 { USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */
202 …{ USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Lo…
203 { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */
204 { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */
207 { USB_DEVICE(0x17A8, 0x0101) }, /* Kamstrup 868 MHz wM-Bus C-Mode Meter Reader (Int Ant) */
208 { USB_DEVICE(0x17A8, 0x0102) }, /* Kamstrup 868 MHz wM-Bus C-Mode Meter Reader (Ext Ant) */
210 { USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
211 { USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
220 { USB_DEVICE(0x1901, 0x0197) }, /* GE CS1000 M.2 Key E serial interface */
221 { USB_DEVICE(0x1901, 0x0198) }, /* GE CS1000 Display serial interface */
222 { USB_DEVICE(0x199B, 0xBA30) }, /* LORD WSDA-200-USB */
225 { USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
227 { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */
229 { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */
250 { USB_DEVICE(0x2184, 0x0030) }, /* GW Instek GDM-834x Digital Multimeter */
251 { USB_DEVICE(0x2626, 0xEA60) }, /* Aruba Networks 7xxx USB Serial Console */
252 { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
253 { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
254 { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */
255 { USB_DEVICE(0x3923, 0x7A0B) }, /* National Instruments USB Serial Console */
256 { USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
260 MODULE_DEVICE_TABLE(usb, id_table);
434 * CP210X_PURGE - 16 bits passed in wValue of USB request.
437 * writing 1 to all, however, purges cp2108 well enough to avoid the hang.
497 * on a CP2105 chip. Structure needs padding due to unused/unspecified bytes.
512 * on a CP2104 chip. Structure needs padding due to unused/unspecified bytes.
562 * Helper to get interface number when we only have struct usb_serial.
564 static u8 cp210x_interface_num(struct usb_serial *serial) in cp210x_interface_num() argument
568 cur_altsetting = serial->interface->cur_altsetting; in cp210x_interface_num()
570 return cur_altsetting->desc.bInterfaceNumber; in cp210x_interface_num()
574 * Reads a variable-sized block of CP210X_ registers, identified by req.
575 * Returns data into buf in native USB byte order.
580 struct usb_serial *serial = port->serial; in cp210x_read_reg_block() local
588 * FIXME Some callers don't bother to check for error, in cp210x_read_reg_block()
592 return -ENOMEM; in cp210x_read_reg_block()
595 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), in cp210x_read_reg_block()
597 port_priv->bInterfaceNumber, dmabuf, bufsize, in cp210x_read_reg_block()
603 dev_err(&port->dev, "failed get req 0x%x size %d status: %d\n", in cp210x_read_reg_block()
606 result = -EIO; in cp210x_read_reg_block()
609 * FIXME Some callers don't bother to check for error, in cp210x_read_reg_block()
621 * Reads any 32-bit CP210X_ register identified by req.
631 * FIXME Some callers don't bother to check for error, in cp210x_read_u32_reg()
644 * Reads any 16-bit CP210X_ register identified by req.
661 * Reads any 8-bit CP210X_ register identified by req.
669 * Reads a variable-sized vendor block of CP210X_ registers, identified by val.
670 * Returns data into buf in native USB byte order.
672 static int cp210x_read_vendor_block(struct usb_serial *serial, u8 type, u16 val, in cp210x_read_vendor_block() argument
680 return -ENOMEM; in cp210x_read_vendor_block()
682 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), in cp210x_read_vendor_block()
684 cp210x_interface_num(serial), dmabuf, bufsize, in cp210x_read_vendor_block()
690 dev_err(&serial->interface->dev, in cp210x_read_vendor_block()
691 "failed to get vendor val 0x%04x size %d: %d\n", val, in cp210x_read_vendor_block()
694 result = -EIO; in cp210x_read_vendor_block()
703 * Writes any 16-bit CP210X_ register (req) whose value is passed
704 * entirely in the wValue field of the USB request.
708 struct usb_serial *serial = port->serial; in cp210x_write_u16_reg() local
712 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), in cp210x_write_u16_reg()
714 port_priv->bInterfaceNumber, NULL, 0, in cp210x_write_u16_reg()
717 dev_err(&port->dev, "failed set request 0x%x status: %d\n", in cp210x_write_u16_reg()
725 * Writes a variable-sized block of CP210X_ registers, identified by req.
726 * Data in buf must be in native USB byte order.
731 struct usb_serial *serial = port->serial; in cp210x_write_reg_block() local
738 return -ENOMEM; in cp210x_write_reg_block()
740 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), in cp210x_write_reg_block()
742 port_priv->bInterfaceNumber, dmabuf, bufsize, in cp210x_write_reg_block()
750 dev_err(&port->dev, "failed set req 0x%x size %d status: %d\n", in cp210x_write_reg_block()
753 result = -EIO; in cp210x_write_reg_block()
760 * Writes any 32-bit CP210X_ register identified by req.
773 * Writes a variable-sized vendor block of CP210X_ registers, identified by val.
774 * Data in buf must be in native USB byte order.
776 static int cp210x_write_vendor_block(struct usb_serial *serial, u8 type, in cp210x_write_vendor_block() argument
784 return -ENOMEM; in cp210x_write_vendor_block()
786 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), in cp210x_write_vendor_block()
788 cp210x_interface_num(serial), dmabuf, bufsize, in cp210x_write_vendor_block()
796 dev_err(&serial->interface->dev, in cp210x_write_vendor_block()
797 "failed to set vendor val 0x%04x size %d: %d\n", val, in cp210x_write_vendor_block()
800 result = -EIO; in cp210x_write_vendor_block()
833 port_priv->has_swapped_line_ctl = true; in cp210x_detect_swapped_line_ctl()
842 * to workaround cp2108 bug and get correct value.
853 /* Workaround swapped bytes in 16-bit value from CP210X_GET_LINE_CTL */ in cp210x_get_line_ctl()
854 if (port_priv->has_swapped_line_ctl) in cp210x_get_line_ctl()
867 dev_err(&port->dev, "%s - Unable to enable UART\n", __func__); in cp210x_open()
890 port_priv->event_mode = false; in cp210x_open()
901 /* Clear both queues; cp2108 needs this to avoid an occasional hang */ in cp210x_close()
906 /* Disabling the interface disables event-insertion mode. */ in cp210x_close()
907 port_priv->event_mode = false; in cp210x_close()
913 port->icount.brk++; in cp210x_process_lsr()
916 port->icount.parity++; in cp210x_process_lsr()
919 port->icount.frame++; in cp210x_process_lsr()
924 port->icount.overrun++; in cp210x_process_lsr()
925 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); in cp210x_process_lsr()
933 switch (port_priv->event_state) { in cp210x_process_char()
936 port_priv->event_state = ES_ESCAPE; in cp210x_process_char()
943 dev_dbg(&port->dev, "%s - escape char\n", __func__); in cp210x_process_char()
945 port_priv->event_state = ES_DATA; in cp210x_process_char()
948 port_priv->event_state = ES_LSR_DATA_0; in cp210x_process_char()
951 port_priv->event_state = ES_LSR; in cp210x_process_char()
954 port_priv->event_state = ES_MSR; in cp210x_process_char()
957 dev_err(&port->dev, "malformed event 0x%02x\n", *ch); in cp210x_process_char()
958 port_priv->event_state = ES_DATA; in cp210x_process_char()
963 port_priv->lsr = *ch; in cp210x_process_char()
964 port_priv->event_state = ES_LSR_DATA_1; in cp210x_process_char()
967 dev_dbg(&port->dev, "%s - lsr = 0x%02x, data = 0x%02x\n", in cp210x_process_char()
968 __func__, port_priv->lsr, *ch); in cp210x_process_char()
969 cp210x_process_lsr(port, port_priv->lsr, flag); in cp210x_process_char()
970 port_priv->event_state = ES_DATA; in cp210x_process_char()
973 dev_dbg(&port->dev, "%s - lsr = 0x%02x\n", __func__, *ch); in cp210x_process_char()
974 port_priv->lsr = *ch; in cp210x_process_char()
975 cp210x_process_lsr(port, port_priv->lsr, flag); in cp210x_process_char()
976 port_priv->event_state = ES_DATA; in cp210x_process_char()
979 dev_dbg(&port->dev, "%s - msr = 0x%02x\n", __func__, *ch); in cp210x_process_char()
981 port_priv->event_state = ES_DATA; in cp210x_process_char()
990 struct usb_serial_port *port = urb->context; in cp210x_process_read_urb()
992 unsigned char *ch = urb->transfer_buffer; in cp210x_process_read_urb()
996 if (!urb->actual_length) in cp210x_process_read_urb()
999 if (port_priv->event_mode) { in cp210x_process_read_urb()
1000 for (i = 0; i < urb->actual_length; i++, ch++) { in cp210x_process_read_urb()
1006 tty_insert_flip_char(&port->port, *ch, flag); in cp210x_process_read_urb()
1009 tty_insert_flip_string(&port->port, ch, urb->actual_length); in cp210x_process_read_urb()
1011 tty_flip_buffer_push(&port->port); in cp210x_process_read_urb()
1020 struct usb_serial *serial = port->serial; in cp210x_get_tx_queue_byte_count() local
1027 return -ENOMEM; in cp210x_get_tx_queue_byte_count()
1029 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), in cp210x_get_tx_queue_byte_count()
1031 0, port_priv->bInterfaceNumber, sts, sizeof(*sts), in cp210x_get_tx_queue_byte_count()
1034 *count = le32_to_cpu(sts->ulAmountInOutQueue); in cp210x_get_tx_queue_byte_count()
1037 dev_err(&port->dev, "failed to get comm status: %d\n", result); in cp210x_get_tx_queue_byte_count()
1039 result = -EIO; in cp210x_get_tx_queue_byte_count()
1063 * termios structure to reflect the state of the device
1071 cp210x_get_termios_port(tty->driver_data, in cp210x_get_termios()
1072 &tty->termios.c_cflag, &baud); in cp210x_get_termios()
1088 struct device *dev = &port->dev; in cp210x_get_termios_port()
1098 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); in cp210x_get_termios_port()
1107 dev_dbg(dev, "%s - data bits = 5\n", __func__); in cp210x_get_termios_port()
1111 dev_dbg(dev, "%s - data bits = 6\n", __func__); in cp210x_get_termios_port()
1115 dev_dbg(dev, "%s - data bits = 7\n", __func__); in cp210x_get_termios_port()
1119 dev_dbg(dev, "%s - data bits = 8\n", __func__); in cp210x_get_termios_port()
1123 dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__); in cp210x_get_termios_port()
1130 dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__); in cp210x_get_termios_port()
1140 dev_dbg(dev, "%s - parity = NONE\n", __func__); in cp210x_get_termios_port()
1144 dev_dbg(dev, "%s - parity = ODD\n", __func__); in cp210x_get_termios_port()
1148 dev_dbg(dev, "%s - parity = EVEN\n", __func__); in cp210x_get_termios_port()
1153 dev_dbg(dev, "%s - parity = MARK\n", __func__); in cp210x_get_termios_port()
1157 dev_dbg(dev, "%s - parity = SPACE\n", __func__); in cp210x_get_termios_port()
1162 dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__); in cp210x_get_termios_port()
1172 dev_dbg(dev, "%s - stop bits = 1\n", __func__); in cp210x_get_termios_port()
1175 dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__); in cp210x_get_termios_port()
1180 dev_dbg(dev, "%s - stop bits = 2\n", __func__); in cp210x_get_termios_port()
1184 dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__); in cp210x_get_termios_port()
1194 dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); in cp210x_get_termios_port()
1197 * auto-RTS and RTS is deasserted but it leaves auto-CTS when in cp210x_get_termios_port()
1198 * in hardware flow control mode. When re-opening the port, if in cp210x_get_termios_port()
1199 * auto-CTS is enabled on the cp210x, then auto-RTS must be in cp210x_get_termios_port()
1200 * re-enabled in the driver. in cp210x_get_termios_port()
1213 dev_dbg(dev, "%s - flow control = NONE\n", __func__); in cp210x_get_termios_port()
1297 * The device will map a requested rate to a supported one, but the result
1300 * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud,
1315 struct usb_serial *serial = port->serial; in cp210x_change_speed() local
1316 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_change_speed()
1320 * This maps the requested rate to the actual rate, a valid rate on in cp210x_change_speed()
1321 * cp2102 or cp2103, or to an arbitrary rate in [1M, max_speed]. in cp210x_change_speed()
1325 baud = clamp(tty->termios.c_ospeed, priv->min_speed, priv->max_speed); in cp210x_change_speed()
1327 if (priv->use_actual_rate) in cp210x_change_speed()
1332 dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); in cp210x_change_speed()
1334 dev_warn(&port->dev, "failed to set baud rate to %u\n", baud); in cp210x_change_speed()
1336 baud = old_termios->c_ospeed; in cp210x_change_speed()
1346 struct cp210x_serial_private *priv = usb_get_serial_data(port->serial); in cp210x_enable_event_mode()
1350 if (port_priv->event_mode) in cp210x_enable_event_mode()
1353 if (priv->no_event_mode) in cp210x_enable_event_mode()
1356 port_priv->event_state = ES_DATA; in cp210x_enable_event_mode()
1357 port_priv->event_mode = true; in cp210x_enable_event_mode()
1361 dev_err(&port->dev, "failed to enable events: %d\n", ret); in cp210x_enable_event_mode()
1362 port_priv->event_mode = false; in cp210x_enable_event_mode()
1371 if (!port_priv->event_mode) in cp210x_disable_event_mode()
1376 dev_err(&port->dev, "failed to disable events: %d\n", ret); in cp210x_disable_event_mode()
1380 port_priv->event_mode = false; in cp210x_disable_event_mode()
1386 struct device *dev = &port->dev; in cp210x_set_termios()
1390 cflag = tty->termios.c_cflag; in cp210x_set_termios()
1391 old_cflag = old_termios->c_cflag; in cp210x_set_termios()
1393 if (tty->termios.c_ospeed != old_termios->c_ospeed) in cp210x_set_termios()
1396 /* If the number of data bits is to be updated */ in cp210x_set_termios()
1403 dev_dbg(dev, "%s - data bits = 5\n", __func__); in cp210x_set_termios()
1407 dev_dbg(dev, "%s - data bits = 6\n", __func__); in cp210x_set_termios()
1411 dev_dbg(dev, "%s - data bits = 7\n", __func__); in cp210x_set_termios()
1416 dev_dbg(dev, "%s - data bits = 8\n", __func__); in cp210x_set_termios()
1431 dev_dbg(dev, "%s - parity = MARK\n", __func__); in cp210x_set_termios()
1434 dev_dbg(dev, "%s - parity = SPACE\n", __func__); in cp210x_set_termios()
1439 dev_dbg(dev, "%s - parity = ODD\n", __func__); in cp210x_set_termios()
1442 dev_dbg(dev, "%s - parity = EVEN\n", __func__); in cp210x_set_termios()
1455 dev_dbg(dev, "%s - stop bits = 2\n", __func__); in cp210x_set_termios()
1458 dev_dbg(dev, "%s - stop bits = 1\n", __func__); in cp210x_set_termios()
1473 dev_dbg(dev, "%s - read ulControlHandshake=0x%08x, ulFlowReplace=0x%08x\n", in cp210x_set_termios()
1487 dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__); in cp210x_set_termios()
1494 dev_dbg(dev, "%s - flow control = NONE\n", __func__); in cp210x_set_termios()
1497 dev_dbg(dev, "%s - write ulControlHandshake=0x%08x, ulFlowReplace=0x%08x\n", in cp210x_set_termios()
1506 * Enable event-insertion mode only if input parity checking is in cp210x_set_termios()
1518 struct usb_serial_port *port = tty->driver_data; in cp210x_tiocmset()
1544 dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control); in cp210x_tiocmset_port()
1559 struct usb_serial_port *port = tty->driver_data; in cp210x_tiocmget()
1574 dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control); in cp210x_tiocmget()
1581 struct usb_serial_port *port = tty->driver_data; in cp210x_break_ctl()
1588 dev_dbg(&port->dev, "%s - turning break %s\n", __func__, in cp210x_break_ctl()
1596 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_request() local
1597 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_request()
1599 if (priv->gpio_altfunc & BIT(offset)) in cp210x_gpio_request()
1600 return -ENODEV; in cp210x_gpio_request()
1607 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_get() local
1608 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_get()
1613 if (priv->partnum == CP210X_PARTNUM_CP2105) in cp210x_gpio_get()
1616 result = usb_autopm_get_interface(serial->interface); in cp210x_gpio_get()
1620 result = cp210x_read_vendor_block(serial, req_type, in cp210x_gpio_get()
1622 usb_autopm_put_interface(serial->interface); in cp210x_gpio_get()
1631 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_set() local
1632 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_set()
1643 result = usb_autopm_get_interface(serial->interface); in cp210x_gpio_set()
1647 if (priv->partnum == CP210X_PARTNUM_CP2105) { in cp210x_gpio_set()
1648 result = cp210x_write_vendor_block(serial, in cp210x_gpio_set()
1655 result = usb_control_msg(serial->dev, in cp210x_gpio_set()
1656 usb_sndctrlpipe(serial->dev, 0), in cp210x_gpio_set()
1664 usb_autopm_put_interface(serial->interface); in cp210x_gpio_set()
1667 dev_err(&serial->interface->dev, "failed to set GPIO value: %d\n", in cp210x_gpio_set()
1674 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_direction_get() local
1675 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_direction_get()
1677 return priv->gpio_input & BIT(gpio); in cp210x_gpio_direction_get()
1682 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_direction_input() local
1683 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_direction_input()
1685 if (priv->partnum == CP210X_PARTNUM_CP2105) { in cp210x_gpio_direction_input()
1687 return -ENOTSUPP; in cp210x_gpio_direction_input()
1690 /* push-pull pins cannot be changed to be inputs */ in cp210x_gpio_direction_input()
1691 if (priv->gpio_pushpull & BIT(gpio)) in cp210x_gpio_direction_input()
1692 return -EINVAL; in cp210x_gpio_direction_input()
1694 /* make sure to release pin if it is being driven low */ in cp210x_gpio_direction_input()
1697 priv->gpio_input |= BIT(gpio); in cp210x_gpio_direction_input()
1705 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_direction_output() local
1706 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_direction_output()
1708 priv->gpio_input &= ~BIT(gpio); in cp210x_gpio_direction_output()
1717 struct usb_serial *serial = gpiochip_get_data(gc); in cp210x_gpio_set_config() local
1718 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_set_config()
1723 (priv->gpio_pushpull & BIT(gpio))) in cp210x_gpio_set_config()
1727 !(priv->gpio_pushpull & BIT(gpio))) in cp210x_gpio_set_config()
1730 return -ENOTSUPP; in cp210x_gpio_set_config()
1735 * are made unavailable by configuring the use of GPIO. This is believed to be
1736 * only applicable to the cp2105 at this point, the other devices supported by
1738 * signals and are thus expected to have very different initialisation.
1740 static int cp2105_gpioconf_init(struct usb_serial *serial) in cp2105_gpioconf_init() argument
1742 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp2105_gpioconf_init()
1745 u8 intf_num = cp210x_interface_num(serial); in cp2105_gpioconf_init()
1749 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, in cp2105_gpioconf_init()
1755 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, in cp2105_gpioconf_init()
1761 /* 2 banks of GPIO - One for the pins taken from each serial port */ in cp2105_gpioconf_init()
1763 priv->gc.ngpio = 2; in cp2105_gpioconf_init()
1767 priv->gpio_altfunc = 0xff; in cp2105_gpioconf_init()
1772 priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) & in cp2105_gpioconf_init()
1776 priv->gc.ngpio = 3; in cp2105_gpioconf_init()
1780 priv->gpio_altfunc = 0xff; in cp2105_gpioconf_init()
1785 priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) & in cp2105_gpioconf_init()
1789 return -ENODEV; in cp2105_gpioconf_init()
1794 priv->gpio_altfunc |= BIT(0); in cp2105_gpioconf_init()
1797 priv->gpio_altfunc |= BIT(1); in cp2105_gpioconf_init()
1800 priv->gpio_input = 0; in cp2105_gpioconf_init()
1805 static int cp2104_gpioconf_init(struct usb_serial *serial) in cp2104_gpioconf_init() argument
1807 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp2104_gpioconf_init()
1814 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, in cp2104_gpioconf_init()
1820 priv->gc.ngpio = 4; in cp2104_gpioconf_init()
1823 priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) & in cp2104_gpioconf_init()
1832 priv->gpio_altfunc |= BIT(0); in cp2104_gpioconf_init()
1834 priv->gpio_altfunc |= BIT(1); in cp2104_gpioconf_init()
1836 priv->gpio_altfunc |= BIT(2); in cp2104_gpioconf_init()
1843 for (i = 0; i < priv->gc.ngpio; ++i) { in cp2104_gpioconf_init()
1845 * Set direction to "input" iff pin is open-drain and reset in cp2104_gpioconf_init()
1848 if (!(priv->gpio_pushpull & BIT(i)) && (gpio_latch & BIT(i))) in cp2104_gpioconf_init()
1849 priv->gpio_input |= BIT(i); in cp2104_gpioconf_init()
1855 static int cp2102n_gpioconf_init(struct usb_serial *serial) in cp2102n_gpioconf_init() argument
1857 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp2102n_gpioconf_init()
1873 … https://www.silabs.com/community/interface/knowledge-base.entry.html/2017/03/31/cp2102n_setconfig… in cp2102n_gpioconf_init()
1877 return -ENOMEM; in cp2102n_gpioconf_init()
1879 result = cp210x_read_vendor_block(serial, in cp2102n_gpioconf_init()
1898 return -ENOTSUPP; in cp2102n_gpioconf_init()
1900 priv->gc.ngpio = 4; in cp2102n_gpioconf_init()
1904 * the direction of an open-drain pin. in cp2102n_gpioconf_init()
1908 /* 0 indicates open-drain mode, 1 is push-pull */ in cp2102n_gpioconf_init()
1909 priv->gpio_pushpull = (gpio_pushpull >> 3) & 0x0f; in cp2102n_gpioconf_init()
1912 if (priv->partnum == CP210X_PARTNUM_CP2102N_QFN20) { in cp2102n_gpioconf_init()
1915 priv->gpio_altfunc |= BIT(0); in cp2102n_gpioconf_init()
1917 priv->gpio_altfunc |= BIT(1); in cp2102n_gpioconf_init()
1919 priv->gpio_altfunc |= BIT(2); in cp2102n_gpioconf_init()
1921 priv->gpio_altfunc |= BIT(3); in cp2102n_gpioconf_init()
1923 priv->gpio_altfunc = (gpio_ctrl >> 2) & 0x0f; in cp2102n_gpioconf_init()
1926 if (priv->partnum == CP210X_PARTNUM_CP2102N_QFN28) { in cp2102n_gpioconf_init()
1928 * For the QFN28 package, GPIO4-6 are controlled by in cp2102n_gpioconf_init()
1930 * Contrary to the document linked above, the bits for in cp2102n_gpioconf_init()
1934 priv->gc.ngpio = 7; in cp2102n_gpioconf_init()
1936 priv->gpio_pushpull |= (gpio_pushpull & 7) << 4; in cp2102n_gpioconf_init()
1941 * it only knows open-drain and push-pull modes which is set at in cp2102n_gpioconf_init()
1942 * factory. An open-drain pin can function both as an in cp2102n_gpioconf_init()
1943 * input or an output. We emulate input mode for open-drain pins in cp2102n_gpioconf_init()
1945 * push-pull pins to be set as an input. in cp2102n_gpioconf_init()
1947 for (i = 0; i < priv->gc.ngpio; ++i) { in cp2102n_gpioconf_init()
1949 * Set direction to "input" iff pin is open-drain and reset in cp2102n_gpioconf_init()
1952 if (!(priv->gpio_pushpull & BIT(i)) && (gpio_latch & BIT(i))) in cp2102n_gpioconf_init()
1953 priv->gpio_input |= BIT(i); in cp2102n_gpioconf_init()
1959 static int cp210x_gpio_init(struct usb_serial *serial) in cp210x_gpio_init() argument
1961 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_init()
1964 switch (priv->partnum) { in cp210x_gpio_init()
1966 result = cp2104_gpioconf_init(serial); in cp210x_gpio_init()
1969 result = cp2105_gpioconf_init(serial); in cp210x_gpio_init()
1974 result = cp2102n_gpioconf_init(serial); in cp210x_gpio_init()
1983 priv->gc.label = "cp210x"; in cp210x_gpio_init()
1984 priv->gc.request = cp210x_gpio_request; in cp210x_gpio_init()
1985 priv->gc.get_direction = cp210x_gpio_direction_get; in cp210x_gpio_init()
1986 priv->gc.direction_input = cp210x_gpio_direction_input; in cp210x_gpio_init()
1987 priv->gc.direction_output = cp210x_gpio_direction_output; in cp210x_gpio_init()
1988 priv->gc.get = cp210x_gpio_get; in cp210x_gpio_init()
1989 priv->gc.set = cp210x_gpio_set; in cp210x_gpio_init()
1990 priv->gc.set_config = cp210x_gpio_set_config; in cp210x_gpio_init()
1991 priv->gc.owner = THIS_MODULE; in cp210x_gpio_init()
1992 priv->gc.parent = &serial->interface->dev; in cp210x_gpio_init()
1993 priv->gc.base = -1; in cp210x_gpio_init()
1994 priv->gc.can_sleep = true; in cp210x_gpio_init()
1996 result = gpiochip_add_data(&priv->gc, serial); in cp210x_gpio_init()
1998 priv->gpio_registered = true; in cp210x_gpio_init()
2003 static void cp210x_gpio_remove(struct usb_serial *serial) in cp210x_gpio_remove() argument
2005 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_gpio_remove()
2007 if (priv->gpio_registered) { in cp210x_gpio_remove()
2008 gpiochip_remove(&priv->gc); in cp210x_gpio_remove()
2009 priv->gpio_registered = false; in cp210x_gpio_remove()
2015 static int cp210x_gpio_init(struct usb_serial *serial) in cp210x_gpio_init() argument
2020 static void cp210x_gpio_remove(struct usb_serial *serial) in cp210x_gpio_remove() argument
2022 /* Nothing to do */ in cp210x_gpio_remove()
2029 struct usb_serial *serial = port->serial; in cp210x_port_probe() local
2035 return -ENOMEM; in cp210x_port_probe()
2037 port_priv->bInterfaceNumber = cp210x_interface_num(serial); in cp210x_port_probe()
2060 static void cp210x_init_max_speed(struct usb_serial *serial) in cp210x_init_max_speed() argument
2062 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_init_max_speed()
2067 switch (priv->partnum) { in cp210x_init_max_speed()
2083 if (cp210x_interface_num(serial) == 0) { in cp210x_init_max_speed()
2102 priv->min_speed = min; in cp210x_init_max_speed()
2103 priv->max_speed = max; in cp210x_init_max_speed()
2104 priv->use_actual_rate = use_actual_rate; in cp210x_init_max_speed()
2107 static void cp2102_determine_quirks(struct usb_serial *serial) in cp2102_determine_quirks() argument
2109 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp2102_determine_quirks()
2117 * Some (possibly counterfeit) CP2102 do not support event-insertion in cp2102_determine_quirks()
2118 * mode and respond differently to malformed vendor requests. in cp2102_determine_quirks()
2120 * two-byte part-number request. in cp2102_determine_quirks()
2122 ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), in cp2102_determine_quirks()
2126 dev_dbg(&serial->interface->dev, in cp2102_determine_quirks()
2127 "device does not support event-insertion mode\n"); in cp2102_determine_quirks()
2128 priv->no_event_mode = true; in cp2102_determine_quirks()
2134 static void cp210x_determine_quirks(struct usb_serial *serial) in cp210x_determine_quirks() argument
2136 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_determine_quirks()
2138 switch (priv->partnum) { in cp210x_determine_quirks()
2140 cp2102_determine_quirks(serial); in cp210x_determine_quirks()
2147 static int cp210x_attach(struct usb_serial *serial) in cp210x_attach() argument
2154 return -ENOMEM; in cp210x_attach()
2156 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, in cp210x_attach()
2157 CP210X_GET_PARTNUM, &priv->partnum, in cp210x_attach()
2158 sizeof(priv->partnum)); in cp210x_attach()
2160 dev_warn(&serial->interface->dev, in cp210x_attach()
2162 priv->partnum = CP210X_PARTNUM_UNKNOWN; in cp210x_attach()
2165 usb_set_serial_data(serial, priv); in cp210x_attach()
2167 cp210x_determine_quirks(serial); in cp210x_attach()
2168 cp210x_init_max_speed(serial); in cp210x_attach()
2170 result = cp210x_gpio_init(serial); in cp210x_attach()
2172 dev_err(&serial->interface->dev, "GPIO initialisation failed: %d\n", in cp210x_attach()
2179 static void cp210x_disconnect(struct usb_serial *serial) in cp210x_disconnect() argument
2181 cp210x_gpio_remove(serial); in cp210x_disconnect()
2184 static void cp210x_release(struct usb_serial *serial) in cp210x_release() argument
2186 struct cp210x_serial_private *priv = usb_get_serial_data(serial); in cp210x_release()
2188 cp210x_gpio_remove(serial); in cp210x_release()