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()
155 			res = -EIO;  in upd78f0730_send_ctl()
169 		return -ENOMEM;  in upd78f0730_port_probe()
171 	mutex_init(&private->lock);  in upd78f0730_port_probe()
182 	mutex_destroy(&private->lock);  in upd78f0730_port_remove()
190 	struct device *dev = tty->dev;  in upd78f0730_tiocmget()
192 	struct usb_serial_port *port = tty->driver_data;  in upd78f0730_tiocmget()
198 	mutex_lock(&private->lock);  in upd78f0730_tiocmget()
199 	signals = private->line_signals;  in upd78f0730_tiocmget()
200 	mutex_unlock(&private->lock);  in upd78f0730_tiocmget()
205 	dev_dbg(dev, "%s - res = %x\n", __func__, res);  in upd78f0730_tiocmget()
213 	struct device *dev = tty->dev;  in upd78f0730_tiocmset()
214 	struct usb_serial_port *port = tty->driver_data;  in upd78f0730_tiocmset()
221 	mutex_lock(&private->lock);  in upd78f0730_tiocmset()
223 		private->line_signals |= UPD78F0730_DTR;  in upd78f0730_tiocmset()
224 		dev_dbg(dev, "%s - set DTR\n", __func__);  in upd78f0730_tiocmset()
227 		private->line_signals |= UPD78F0730_RTS;  in upd78f0730_tiocmset()
228 		dev_dbg(dev, "%s - set RTS\n", __func__);  in upd78f0730_tiocmset()
231 		private->line_signals &= ~UPD78F0730_DTR;  in upd78f0730_tiocmset()
232 		dev_dbg(dev, "%s - clear DTR\n", __func__);  in upd78f0730_tiocmset()
235 		private->line_signals &= ~UPD78F0730_RTS;  in upd78f0730_tiocmset()
236 		dev_dbg(dev, "%s - clear RTS\n", __func__);  in upd78f0730_tiocmset()
239 	request.params = private->line_signals;  in upd78f0730_tiocmset()
242 	mutex_unlock(&private->lock);  in upd78f0730_tiocmset()
249 	struct device *dev = tty->dev;  in upd78f0730_break_ctl()
251 	struct usb_serial_port *port = tty->driver_data;  in upd78f0730_break_ctl()
256 	mutex_lock(&private->lock);  in upd78f0730_break_ctl()
258 		private->line_signals |= UPD78F0730_BREAK;  in upd78f0730_break_ctl()
259 		dev_dbg(dev, "%s - set BREAK\n", __func__);  in upd78f0730_break_ctl()
261 		private->line_signals &= ~UPD78F0730_BREAK;  in upd78f0730_break_ctl()
262 		dev_dbg(dev, "%s - clear BREAK\n", __func__);  in upd78f0730_break_ctl()
265 	request.params = private->line_signals;  in upd78f0730_break_ctl()
268 	mutex_unlock(&private->lock);  in upd78f0730_break_ctl()
273 	struct tty_struct *tty = port->port.tty;  in upd78f0730_dtr_rts()
293 	for (i = ARRAY_SIZE(supported) - 1; i >= 0; i--) {  in upd78f0730_get_baud_rate()
308 	struct device *dev = &port->dev;  in upd78f0730_set_termios()
312 	if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))  in upd78f0730_set_termios()
317 	else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)  in upd78f0730_set_termios()
324 	dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud_rate);  in upd78f0730_set_termios()
329 		dev_dbg(dev, "%s - 7 data bits\n", __func__);  in upd78f0730_set_termios()
332 		tty->termios.c_cflag &= ~CSIZE;  in upd78f0730_set_termios()
333 		tty->termios.c_cflag |= CS8;  in upd78f0730_set_termios()
338 		dev_dbg(dev, "%s - 8 data bits\n", __func__);  in upd78f0730_set_termios()
345 			dev_dbg(dev, "%s - odd parity\n", __func__);  in upd78f0730_set_termios()
348 			dev_dbg(dev, "%s - even parity\n", __func__);  in upd78f0730_set_termios()
352 			tty->termios.c_cflag &= ~CMSPAR;  in upd78f0730_set_termios()
353 			dev_warn(dev, "MARK/SPACE parity is not supported\n");  in upd78f0730_set_termios()
357 		dev_dbg(dev, "%s - no parity\n", __func__);  in upd78f0730_set_termios()
362 		dev_dbg(dev, "%s - 2 stop bits\n", __func__);  in upd78f0730_set_termios()
365 		dev_dbg(dev, "%s - 1 stop bit\n", __func__);  in upd78f0730_set_termios()
369 		tty->termios.c_cflag &= ~CRTSCTS;  in upd78f0730_set_termios()
373 		tty->termios.c_iflag &= ~(IXOFF | IXON);  in upd78f0730_set_termios()
377 	dev_dbg(dev, "%s - no flow control\n", __func__);  in upd78f0730_set_termios()