1 // SPDX-License-Identifier: GPL-2.0
8  * μPD78F0730 8-bit Single-Chip Microcontroller
9  * USB-to-Serial Conversion Software
10  * <https://www.renesas.com/en-eu/doc/DocumentServer/026/U19660EJ1V0AN00.pdf>
13  * - data bits: 7 or 8
14  * - stop bits: 1 or 2
15  * - parity: even, odd or none
16  * - flow control: none
17  * - baud rates: 0, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 153600
18  * - signals: DTR, RTS and BREAK
32 	{ USB_DEVICE(0x0409, 0x0063) }, /* V850ESJX3-STICK */
34 	{ USB_DEVICE(0x064B, 0x7825) }, /* Analog Devices EVAL-ADXL362Z-DB */
49 /* Op-codes of control commands */
61 /* Stop-bit modes in UPD78F0730_CMD_LINE_CONTROL command */
66 /* Parity modes in UPD78F0730_CMD_LINE_CONTROL command */
131 	struct usb_device *usbdev = port->serial->dev;  in upd78f0730_send_ctl()
136 		return -EINVAL;  in upd78f0730_send_ctl()
140 		return -ENOMEM;  in upd78f0730_send_ctl()
149 		struct device *dev = &port->dev;  in upd78f0730_send_ctl()
166 		return -ENOMEM;  in upd78f0730_port_probe()
168 	mutex_init(&private->lock);  in upd78f0730_port_probe()
179 	mutex_destroy(&private->lock);  in upd78f0730_port_remove()
186 	struct usb_serial_port *port = tty->driver_data;  in upd78f0730_tiocmget()
192 	mutex_lock(&private->lock);  in upd78f0730_tiocmget()
193 	signals = private->line_signals;  in upd78f0730_tiocmget()
194 	mutex_unlock(&private->lock);  in upd78f0730_tiocmget()
199 	dev_dbg(&port->dev, "%s - res = %x\n", __func__, res);  in upd78f0730_tiocmget()
207 	struct usb_serial_port *port = tty->driver_data;  in upd78f0730_tiocmset()
210 	struct device *dev = &port->dev;  in upd78f0730_tiocmset()
215 	mutex_lock(&private->lock);  in upd78f0730_tiocmset()
217 		private->line_signals |= UPD78F0730_DTR;  in upd78f0730_tiocmset()
218 		dev_dbg(dev, "%s - set DTR\n", __func__);  in upd78f0730_tiocmset()
221 		private->line_signals |= UPD78F0730_RTS;  in upd78f0730_tiocmset()
222 		dev_dbg(dev, "%s - set RTS\n", __func__);  in upd78f0730_tiocmset()
225 		private->line_signals &= ~UPD78F0730_DTR;  in upd78f0730_tiocmset()
226 		dev_dbg(dev, "%s - clear DTR\n", __func__);  in upd78f0730_tiocmset()
229 		private->line_signals &= ~UPD78F0730_RTS;  in upd78f0730_tiocmset()
230 		dev_dbg(dev, "%s - clear RTS\n", __func__);  in upd78f0730_tiocmset()
233 	request.params = private->line_signals;  in upd78f0730_tiocmset()
236 	mutex_unlock(&private->lock);  in upd78f0730_tiocmset()
244 	struct usb_serial_port *port = tty->driver_data;  in upd78f0730_break_ctl()
246 	struct device *dev = &port->dev;  in upd78f0730_break_ctl()
250 	mutex_lock(&private->lock);  in upd78f0730_break_ctl()
252 		private->line_signals |= UPD78F0730_BREAK;  in upd78f0730_break_ctl()
253 		dev_dbg(dev, "%s - set BREAK\n", __func__);  in upd78f0730_break_ctl()
255 		private->line_signals &= ~UPD78F0730_BREAK;  in upd78f0730_break_ctl()
256 		dev_dbg(dev, "%s - clear BREAK\n", __func__);  in upd78f0730_break_ctl()
259 	request.params = private->line_signals;  in upd78f0730_break_ctl()
262 	mutex_unlock(&private->lock);  in upd78f0730_break_ctl()
267 	struct tty_struct *tty = port->port.tty;  in upd78f0730_dtr_rts()
287 	for (i = ARRAY_SIZE(supported) - 1; i >= 0; i--) {  in upd78f0730_get_baud_rate()
302 	struct device *dev = &port->dev;  in upd78f0730_set_termios()
306 	if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))  in upd78f0730_set_termios()
311 	else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)  in upd78f0730_set_termios()
318 	dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud_rate);  in upd78f0730_set_termios()
323 		dev_dbg(dev, "%s - 7 data bits\n", __func__);  in upd78f0730_set_termios()
326 		tty->termios.c_cflag &= ~CSIZE;  in upd78f0730_set_termios()
327 		tty->termios.c_cflag |= CS8;  in upd78f0730_set_termios()
332 		dev_dbg(dev, "%s - 8 data bits\n", __func__);  in upd78f0730_set_termios()
339 			dev_dbg(dev, "%s - odd parity\n", __func__);  in upd78f0730_set_termios()
342 			dev_dbg(dev, "%s - even parity\n", __func__);  in upd78f0730_set_termios()
346 			tty->termios.c_cflag &= ~CMSPAR;  in upd78f0730_set_termios()
347 			dev_warn(dev, "MARK/SPACE parity is not supported\n");  in upd78f0730_set_termios()
351 		dev_dbg(dev, "%s - no parity\n", __func__);  in upd78f0730_set_termios()
356 		dev_dbg(dev, "%s - 2 stop bits\n", __func__);  in upd78f0730_set_termios()
359 		dev_dbg(dev, "%s - 1 stop bit\n", __func__);  in upd78f0730_set_termios()
363 		tty->termios.c_cflag &= ~CRTSCTS;  in upd78f0730_set_termios()
367 		tty->termios.c_iflag &= ~(IXOFF | IXON);  in upd78f0730_set_termios()
371 	dev_dbg(dev, "%s - no flow control\n", __func__);  in upd78f0730_set_termios()