8  *	Supports the following Moxa USB to serial converters:
19 #include <linux/serial.h>
27 #include <linux/usb/serial.h>
105 /* Definitions for serial event type */
212 static int mxuport_recv_ctrl_urb(struct usb_serial *serial,  in mxuport_recv_ctrl_urb()  argument
218 	status = usb_control_msg(serial->dev,  in mxuport_recv_ctrl_urb()
219 				 usb_rcvctrlpipe(serial->dev, 0),  in mxuport_recv_ctrl_urb()
226 		dev_err(&serial->interface->dev,  in mxuport_recv_ctrl_urb()
233 		dev_err(&serial->interface->dev,  in mxuport_recv_ctrl_urb()
243 static int mxuport_send_ctrl_data_urb(struct usb_serial *serial,  in mxuport_send_ctrl_data_urb()  argument
250 	status = usb_control_msg(serial->dev,  in mxuport_send_ctrl_data_urb()
251 				 usb_sndctrlpipe(serial->dev, 0),  in mxuport_send_ctrl_data_urb()
258 		dev_err(&serial->interface->dev,  in mxuport_send_ctrl_data_urb()
265 		dev_err(&serial->interface->dev,  in mxuport_send_ctrl_data_urb()
275 static int mxuport_send_ctrl_urb(struct usb_serial *serial,  in mxuport_send_ctrl_urb()  argument
278 	return mxuport_send_ctrl_data_urb(serial, request, value, index,  in mxuport_send_ctrl_urb()
294 	struct usb_serial *serial = port->serial;  in mxuport_throttle()  local
298 	mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_RX_HOST_EN,  in mxuport_throttle()
313 	struct usb_serial *serial = port->serial;  in mxuport_unthrottle()  local
317 	mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_RX_HOST_EN,  in mxuport_unthrottle()
473 	struct usb_serial *serial = port->serial;  in mxuport_process_read_urb_demux_data()  local
489 		if (rcv_port >= serial->num_ports) {  in mxuport_process_read_urb_demux_data()
495 		demux_port = serial->port[rcv_port];  in mxuport_process_read_urb_demux_data()
520 	struct usb_serial *serial = port->serial;  in mxuport_process_read_urb_demux_event()  local
536 		if (rcv_port >= serial->num_ports) {  in mxuport_process_read_urb_demux_event()
542 		demux_port = serial->port[rcv_port];  in mxuport_process_read_urb_demux_event()
559  * contain serial data or events.
564 	struct usb_serial *serial = port->serial;  in mxuport_process_read_urb()  local
566 	if (port == serial->port[0])  in mxuport_process_read_urb()
569 	if (port == serial->port[1])  in mxuport_process_read_urb()
579 	struct usb_serial *serial = port->serial;  in mxuport_tx_empty()  local
589 	err = mxuport_recv_ctrl_urb(serial, RQ_VENDOR_GET_OUTQUEUE, 0,  in mxuport_tx_empty()
607 	struct usb_serial *serial = port->serial;  in mxuport_set_mcr()  local
612 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_MCR,  in mxuport_set_mcr()
623 	struct usb_serial *serial = port->serial;  in mxuport_set_dtr()  local
628 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_DTR,  in mxuport_set_dtr()
645 	struct usb_serial *serial = port->serial;  in mxuport_set_rts()  local
673 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_RTS,  in mxuport_set_rts()
772 				    struct usb_serial *serial)  in mxuport_set_termios_flow()  argument
791 		err = mxuport_send_ctrl_data_urb(serial, RQ_VENDOR_SET_CHARS,  in mxuport_set_termios_flow()
803 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_XONXOFF,  in mxuport_set_termios_flow()
846 	struct usb_serial *serial = port->serial;  in mxuport_set_termios()  local
910 	err = mxuport_send_ctrl_data_urb(serial, RQ_VENDOR_SET_LINE,  in mxuport_set_termios()
915 	err = mxuport_set_termios_flow(tty, old_termios, port, serial);  in mxuport_set_termios()
926 	err = mxuport_send_ctrl_data_urb(serial, RQ_VENDOR_SET_BAUD,  in mxuport_set_termios()
945 static int mxuport_calc_num_ports(struct usb_serial *serial,  in mxuport_calc_num_ports()  argument
948 	unsigned long features = (unsigned long)usb_get_serial_data(serial);  in mxuport_calc_num_ports()
961 		dev_warn(&serial->interface->dev,  in mxuport_calc_num_ports()
981 static int mxuport_get_fw_version(struct usb_serial *serial, u32 *version)  in mxuport_get_fw_version()  argument
991 	err = mxuport_recv_ctrl_urb(serial, RQ_VENDOR_GET_VERSION, 0, 0,  in mxuport_get_fw_version()
1006 static int mxuport_download_fw(struct usb_serial *serial,  in mxuport_download_fw()  argument
1018 	dev_dbg(&serial->interface->dev, "Starting firmware download...\n");  in mxuport_download_fw()
1019 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_START_FW_DOWN, 0, 0);  in mxuport_download_fw()
1028 		err = mxuport_send_ctrl_data_urb(serial, RQ_VENDOR_FW_DATA,  in mxuport_download_fw()
1031 			mxuport_send_ctrl_urb(serial, RQ_VENDOR_STOP_FW_DOWN,  in mxuport_download_fw()
1042 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_STOP_FW_DOWN, 0, 0);  in mxuport_download_fw()
1047 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_QUERY_FW_READY, 0, 0);  in mxuport_download_fw()
1054 static int mxuport_probe(struct usb_serial *serial,  in mxuport_probe()  argument
1057 	u16 productid = le16_to_cpu(serial->dev->descriptor.idProduct);  in mxuport_probe()
1065 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_QUERY_FW_CONFIG, 0, 0);  in mxuport_probe()
1067 		mxuport_send_ctrl_urb(serial, RQ_VENDOR_RESET_DEVICE, 0, 0);  in mxuport_probe()
1071 	err = mxuport_get_fw_version(serial, &version);  in mxuport_probe()
1075 	dev_dbg(&serial->interface->dev, "Device firmware version v%x.%x.%x\n",  in mxuport_probe()
1082 	err = request_firmware(&fw_p, buf, &serial->interface->dev);  in mxuport_probe()
1084 		dev_warn(&serial->interface->dev, "Firmware %s not found\n",  in mxuport_probe()
1093 		dev_dbg(&serial->interface->dev,  in mxuport_probe()
1098 			err = mxuport_download_fw(serial, fw_p);  in mxuport_probe()
1101 			err  = mxuport_get_fw_version(serial, &version);  in mxuport_probe()
1107 	dev_info(&serial->interface->dev,  in mxuport_probe()
1117 	usb_set_serial_data(serial, (void *)id->driver_info);  in mxuport_probe()
1127 	struct usb_serial *serial = port->serial;  in mxuport_port_probe()  local
1143 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_FIFO_DISABLE,  in mxuport_port_probe()
1149 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_HIGH_PERFOR,  in mxuport_port_probe()
1155 	return mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_INTERFACE,  in mxuport_port_probe()
1160 static int mxuport_attach(struct usb_serial *serial)  in mxuport_attach()  argument
1162 	struct usb_serial_port *port0 = serial->port[0];  in mxuport_attach()
1163 	struct usb_serial_port *port1 = serial->port[1];  in mxuport_attach()
1186 static void mxuport_release(struct usb_serial *serial)  in mxuport_release()  argument
1188 	struct usb_serial_port *port0 = serial->port[0];  in mxuport_release()
1189 	struct usb_serial_port *port1 = serial->port[1];  in mxuport_release()
1198 	struct usb_serial *serial = port->serial;  in mxuport_open()  local
1202 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_RX_HOST_EN,  in mxuport_open()
1207 	err = mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_OPEN,  in mxuport_open()
1210 		mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_RX_HOST_EN,  in mxuport_open()
1230 	struct usb_serial *serial = port->serial;  in mxuport_close()  local
1232 	mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_OPEN, 0,  in mxuport_close()
1235 	mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_RX_HOST_EN, 0,  in mxuport_close()
1243 	struct usb_serial *serial = port->serial;  in mxuport_break_ctl()  local
1254 	mxuport_send_ctrl_urb(serial, RQ_VENDOR_SET_BREAK,  in mxuport_break_ctl()
1258 static int mxuport_resume(struct usb_serial *serial)  in mxuport_resume()  argument
1266 		port = serial->port[i];  in mxuport_resume()
1273 	for (i = 0; i < serial->num_ports; i++) {  in mxuport_resume()
1274 		port = serial->port[i];  in mxuport_resume()