3  * USB Serial Console driver
18 #include <linux/serial.h>
20 #include <linux/usb/serial.h>
33  * USB Serial console driver
35  * Much of the code here is copied from drivers/char/serial.c
36  * and implements a phony serial console in the same way that
37  * serial.c does so that in case some software queries it,
40  * Things that are different from the way the serial port code
41  * does things, is that we call the lower level usb-serial
52  * serial.c code, except that the specifier is "ttyUSB" instead
64 	struct usb_serial *serial;  in usb_console_setup()  local
115 	serial = port->serial;  in usb_console_setup()
117 	retval = usb_autopm_get_interface(serial->interface);  in usb_console_setup()
127 		if (serial->type->set_termios) {  in usb_console_setup()
153 		retval = serial->type->open(NULL, port);  in usb_console_setup()
159 		if (serial->type->set_termios) {  in usb_console_setup()
163 			serial->type->set_termios(tty, port, &dummy);  in usb_console_setup()
178 	mutex_unlock(&serial->disc_mutex);  in usb_console_setup()
187 	usb_autopm_put_interface(serial->interface);  in usb_console_setup()
189 	usb_serial_put(serial);  in usb_console_setup()
190 	mutex_unlock(&serial->disc_mutex);  in usb_console_setup()
199 	struct usb_serial *serial;  in usb_console_write()  local
202 	if (!port || port->serial->dev->state == USB_STATE_NOTATTACHED)  in usb_console_write()
204 	serial = port->serial;  in usb_console_write()
229 		retval = serial->type->write(NULL, port, buf, i);  in usb_console_write()
234 			retval = serial->type->write(NULL, port, &cr, 1);  in usb_console_write()
264 void usb_serial_console_disconnect(struct usb_serial *serial)  in usb_serial_console_disconnect()  argument
266 	if (serial->port[0] && serial->port[0] == usbcons_info.port) {  in usb_serial_console_disconnect()
268 		usb_serial_put(serial);  in usb_serial_console_disconnect()
288 		pr_debug("registering the USB serial console.\n");  in usb_serial_console_init()