2 * Prolific PL2303 USB to serial adaptor driver
4 * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com)
5 * Copyright (C) 2003 IBM Corp.
7 * Original driver for 2.2.x by anonymous
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License version
11 * 2 as published by the Free Software Foundation.
13 * See Documentation/usb/usb-serial.txt for more information on using this
18 #include <linux/kernel.h>
19 #include <linux/errno.h>
20 #include <linux/init.h>
21 #include <linux/slab.h>
22 #include <linux/tty.h>
23 #include <linux/tty_driver.h>
24 #include <linux/tty_flip.h>
25 #include <linux/serial.h>
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/spinlock.h>
29 #include <linux/uaccess.h>
30 #include <linux/usb.h>
31 #include <linux/usb/serial.h>
37 #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver"
39 static const struct usb_device_id id_table[] = {
40 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) },
41 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },
42 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) },
43 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) },
44 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
45 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
46 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
47 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
48 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
49 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
50 { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
51 { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
52 { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
53 { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
54 { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
55 { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) },
56 { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) },
57 { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) },
58 { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) },
59 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) },
60 { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) },
61 { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) },
62 { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) },
63 { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) },
64 { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) },
65 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) },
66 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) },
67 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) },
68 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) },
69 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) },
70 { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */
71 { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) },
72 { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) },
73 { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) },
74 { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) },
75 { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) },
76 { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) },
77 { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) },
78 { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) },
79 { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) },
80 { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) },
81 { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) },
82 { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) },
83 { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) },
84 { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) },
85 { USB_DEVICE(HP_VENDOR_ID, HP_LD960_PRODUCT_ID) },
86 { USB_DEVICE(HP_VENDOR_ID, HP_LCM220_PRODUCT_ID) },
87 { USB_DEVICE(HP_VENDOR_ID, HP_LCM960_PRODUCT_ID) },
88 { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
89 { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) },
90 { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
91 { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
92 { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
93 { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
94 { } /* Terminating entry */
97 MODULE_DEVICE_TABLE(usb, id_table);
99 #define SET_LINE_REQUEST_TYPE 0x21
100 #define SET_LINE_REQUEST 0x20
102 #define SET_CONTROL_REQUEST_TYPE 0x21
103 #define SET_CONTROL_REQUEST 0x22
104 #define CONTROL_DTR 0x01
105 #define CONTROL_RTS 0x02
107 #define BREAK_REQUEST_TYPE 0x21
108 #define BREAK_REQUEST 0x23
109 #define BREAK_ON 0xffff
110 #define BREAK_OFF 0x0000
112 #define GET_LINE_REQUEST_TYPE 0xa1
113 #define GET_LINE_REQUEST 0x21
115 #define VENDOR_WRITE_REQUEST_TYPE 0x40
116 #define VENDOR_WRITE_REQUEST 0x01
118 #define VENDOR_READ_REQUEST_TYPE 0xc0
119 #define VENDOR_READ_REQUEST 0x01
121 #define UART_STATE 0x08
122 #define UART_STATE_TRANSIENT_MASK 0x74
123 #define UART_DCD 0x01
124 #define UART_DSR 0x02
125 #define UART_BREAK_ERROR 0x04
126 #define UART_RING 0x08
127 #define UART_FRAME_ERROR 0x10
128 #define UART_PARITY_ERROR 0x20
129 #define UART_OVERRUN_ERROR 0x40
130 #define UART_CTS 0x80
134 type_0, /* don't know the difference between type 0 and */
135 type_1, /* type 1, until someone from prolific tells us... */
136 HX, /* HX version of the pl2303 chip */
139 struct pl2303_serial_private {
140 enum pl2303_type type;
143 struct pl2303_private {
151 static int pl2303_vendor_read(__u16 value, __u16 index,
152 struct usb_serial *serial, unsigned char *buf)
154 int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
155 VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
156 value, index, buf, 1, 100);
157 dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n",
158 VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index,
163 static int pl2303_vendor_write(__u16 value, __u16 index,
164 struct usb_serial *serial)
166 int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
167 VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
168 value, index, NULL, 0, 100);
169 dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n",
170 VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index,
175 static int pl2303_startup(struct usb_serial *serial)
177 struct pl2303_serial_private *spriv;
178 enum pl2303_type type = type_0;
181 spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
185 buf = kmalloc(10, GFP_KERNEL);
191 if (serial->dev->descriptor.bDeviceClass == 0x02)
193 else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
195 else if (serial->dev->descriptor.bDeviceClass == 0x00)
197 else if (serial->dev->descriptor.bDeviceClass == 0xFF)
199 dev_dbg(&serial->interface->dev, "device type: %d\n", type);
202 usb_set_serial_data(serial, spriv);
204 pl2303_vendor_read(0x8484, 0, serial, buf);
205 pl2303_vendor_write(0x0404, 0, serial);
206 pl2303_vendor_read(0x8484, 0, serial, buf);
207 pl2303_vendor_read(0x8383, 0, serial, buf);
208 pl2303_vendor_read(0x8484, 0, serial, buf);
209 pl2303_vendor_write(0x0404, 1, serial);
210 pl2303_vendor_read(0x8484, 0, serial, buf);
211 pl2303_vendor_read(0x8383, 0, serial, buf);
212 pl2303_vendor_write(0, 1, serial);
213 pl2303_vendor_write(1, 0, serial);
215 pl2303_vendor_write(2, 0x44, serial);
217 pl2303_vendor_write(2, 0x24, serial);
223 static void pl2303_release(struct usb_serial *serial)
225 struct pl2303_serial_private *spriv;
227 spriv = usb_get_serial_data(serial);
231 static int pl2303_port_probe(struct usb_serial_port *port)
233 struct pl2303_private *priv;
235 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
239 spin_lock_init(&priv->lock);
241 usb_set_serial_port_data(port, priv);
246 static int pl2303_port_remove(struct usb_serial_port *port)
248 struct pl2303_private *priv;
250 priv = usb_get_serial_port_data(port);
256 static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value)
258 struct usb_device *dev = port->serial->dev;
261 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
262 SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
263 value, 0, NULL, 0, 100);
264 dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__,
269 static void pl2303_set_termios(struct tty_struct *tty,
270 struct usb_serial_port *port, struct ktermios *old_termios)
272 struct usb_serial *serial = port->serial;
273 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
274 struct pl2303_private *priv = usb_get_serial_port_data(port);
281 const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600,
282 4800, 7200, 9600, 14400, 19200, 28800, 38400,
283 57600, 115200, 230400, 460800, 614400,
284 921600, 1228800, 2457600, 3000000, 6000000 };
285 int baud_floor, baud_ceil;
288 if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
291 cflag = tty->termios.c_cflag;
293 buf = kzalloc(7, GFP_KERNEL);
295 dev_err(&port->dev, "%s - out of memory.\n", __func__);
296 /* Report back no change occurred */
298 tty->termios = *old_termios;
302 i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
303 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
305 dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i,
306 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
308 switch (cflag & CSIZE) {
323 dev_dbg(&port->dev, "data bits = %d\n", buf[6]);
325 /* For reference buf[0]:buf[3] baud rate value */
326 /* NOTE: Only the values defined in baud_sup are supported !
327 * => if unsupported values are set, the PL2303 seems to use
328 * 9600 baud (at least my PL2303X always does)
330 baud = tty_get_baud_rate(tty);
331 dev_dbg(&port->dev, "baud requested = %d\n", baud);
333 /* Set baudrate to nearest supported value */
334 for (k=0; k<ARRAY_SIZE(baud_sup); k++) {
335 if (baud_sup[k] / baud) {
336 baud_ceil = baud_sup[k];
340 baud_floor = baud_sup[k-1];
341 if ((baud_ceil % baud)
342 > (baud % baud_floor))
350 if (baud > 1228800) {
351 /* type_0, type_1 only support up to 1228800 baud */
352 if (spriv->type != HX)
354 else if (baud > 6000000)
357 dev_dbg(&port->dev, "baud set = %d\n", baud);
358 if (baud <= 115200) {
359 buf[0] = baud & 0xff;
360 buf[1] = (baud >> 8) & 0xff;
361 buf[2] = (baud >> 16) & 0xff;
362 buf[3] = (baud >> 24) & 0xff;
364 /* apparently the formula for higher speeds is:
365 * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
367 unsigned tmp = 12*1000*1000*32 / baud;
370 buf[1] = (tmp >= 256);
379 /* For reference buf[4]=0 is 1 stop bits */
380 /* For reference buf[4]=1 is 1.5 stop bits */
381 /* For reference buf[4]=2 is 2 stop bits */
382 if (cflag & CSTOPB) {
383 /* NOTE: Comply with "real" UARTs / RS232:
384 * use 1.5 instead of 2 stop bits with 5 data bits
386 if ((cflag & CSIZE) == CS5) {
388 dev_dbg(&port->dev, "stop bits = 1.5\n");
391 dev_dbg(&port->dev, "stop bits = 2\n");
395 dev_dbg(&port->dev, "stop bits = 1\n");
398 if (cflag & PARENB) {
399 /* For reference buf[5]=0 is none parity */
400 /* For reference buf[5]=1 is odd parity */
401 /* For reference buf[5]=2 is even parity */
402 /* For reference buf[5]=3 is mark parity */
403 /* For reference buf[5]=4 is space parity */
404 if (cflag & PARODD) {
405 if (cflag & CMSPAR) {
407 dev_dbg(&port->dev, "parity = mark\n");
410 dev_dbg(&port->dev, "parity = odd\n");
413 if (cflag & CMSPAR) {
415 dev_dbg(&port->dev, "parity = space\n");
418 dev_dbg(&port->dev, "parity = even\n");
423 dev_dbg(&port->dev, "parity = none\n");
427 * Some PL2303 are known to lose bytes if you change serial settings
428 * even to the same values as before. Thus we actually need to filter
429 * in this specific case.
431 * Note that the tty_termios_hw_change check above is not sufficient
432 * as a previously requested baud rate may differ from the one
433 * actually used (and stored in old_termios).
435 * NOTE: No additional locking needed for line_settings as it is
436 * only used in set_termios, which is serialised against itself.
438 if (!old_termios || memcmp(buf, priv->line_settings, 7)) {
439 i = usb_control_msg(serial->dev,
440 usb_sndctrlpipe(serial->dev, 0),
441 SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
444 dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i);
447 memcpy(priv->line_settings, buf, 7);
450 /* change control lines if we are switching to or from B0 */
451 spin_lock_irqsave(&priv->lock, flags);
452 control = priv->line_control;
453 if ((cflag & CBAUD) == B0)
454 priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
455 else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
456 priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
457 if (control != priv->line_control) {
458 control = priv->line_control;
459 spin_unlock_irqrestore(&priv->lock, flags);
460 pl2303_set_control_lines(port, control);
462 spin_unlock_irqrestore(&priv->lock, flags);
465 buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
467 i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
468 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
470 dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i,
471 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
473 if (cflag & CRTSCTS) {
474 if (spriv->type == HX)
475 pl2303_vendor_write(0x0, 0x61, serial);
477 pl2303_vendor_write(0x0, 0x41, serial);
479 pl2303_vendor_write(0x0, 0x0, serial);
482 /* Save resulting baud rate */
484 tty_encode_baud_rate(tty, baud, baud);
489 static void pl2303_dtr_rts(struct usb_serial_port *port, int on)
491 struct pl2303_private *priv = usb_get_serial_port_data(port);
495 spin_lock_irqsave(&priv->lock, flags);
496 /* Change DTR and RTS */
498 priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
500 priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
501 control = priv->line_control;
502 spin_unlock_irqrestore(&priv->lock, flags);
503 pl2303_set_control_lines(port, control);
506 static void pl2303_close(struct usb_serial_port *port)
508 usb_serial_generic_close(port);
509 usb_kill_urb(port->interrupt_in_urb);
512 static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
514 struct usb_serial *serial = port->serial;
515 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
518 if (spriv->type != HX) {
519 usb_clear_halt(serial->dev, port->write_urb->pipe);
520 usb_clear_halt(serial->dev, port->read_urb->pipe);
522 /* reset upstream data pipes */
523 pl2303_vendor_write(8, 0, serial);
524 pl2303_vendor_write(9, 0, serial);
529 pl2303_set_termios(tty, port, NULL);
531 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
533 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
534 " error %d\n", __func__, result);
538 result = usb_serial_generic_open(tty, port);
540 usb_kill_urb(port->interrupt_in_urb);
544 port->port.drain_delay = 256;
548 static int pl2303_tiocmset(struct tty_struct *tty,
549 unsigned int set, unsigned int clear)
551 struct usb_serial_port *port = tty->driver_data;
552 struct pl2303_private *priv = usb_get_serial_port_data(port);
557 spin_lock_irqsave(&priv->lock, flags);
559 priv->line_control |= CONTROL_RTS;
561 priv->line_control |= CONTROL_DTR;
562 if (clear & TIOCM_RTS)
563 priv->line_control &= ~CONTROL_RTS;
564 if (clear & TIOCM_DTR)
565 priv->line_control &= ~CONTROL_DTR;
566 control = priv->line_control;
567 spin_unlock_irqrestore(&priv->lock, flags);
569 ret = pl2303_set_control_lines(port, control);
571 return usb_translate_errors(ret);
576 static int pl2303_tiocmget(struct tty_struct *tty)
578 struct usb_serial_port *port = tty->driver_data;
579 struct pl2303_private *priv = usb_get_serial_port_data(port);
585 spin_lock_irqsave(&priv->lock, flags);
586 mcr = priv->line_control;
587 status = priv->line_status;
588 spin_unlock_irqrestore(&priv->lock, flags);
590 result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
591 | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
592 | ((status & UART_CTS) ? TIOCM_CTS : 0)
593 | ((status & UART_DSR) ? TIOCM_DSR : 0)
594 | ((status & UART_RING) ? TIOCM_RI : 0)
595 | ((status & UART_DCD) ? TIOCM_CD : 0);
597 dev_dbg(&port->dev, "%s - result = %x\n", __func__, result);
602 static int pl2303_carrier_raised(struct usb_serial_port *port)
604 struct pl2303_private *priv = usb_get_serial_port_data(port);
605 if (priv->line_status & UART_DCD)
610 static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg)
612 struct usb_serial_port *port = tty->driver_data;
613 struct pl2303_private *priv = usb_get_serial_port_data(port);
615 unsigned int prevstatus;
617 unsigned int changed;
619 spin_lock_irqsave(&priv->lock, flags);
620 prevstatus = priv->line_status;
621 spin_unlock_irqrestore(&priv->lock, flags);
624 interruptible_sleep_on(&port->port.delta_msr_wait);
625 /* see if a signal did it */
626 if (signal_pending(current))
629 if (port->serial->disconnected)
632 spin_lock_irqsave(&priv->lock, flags);
633 status = priv->line_status;
634 spin_unlock_irqrestore(&priv->lock, flags);
636 changed = prevstatus ^ status;
638 if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
639 ((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
640 ((arg & TIOCM_CD) && (changed & UART_DCD)) ||
641 ((arg & TIOCM_CTS) && (changed & UART_CTS))) {
650 static int pl2303_ioctl(struct tty_struct *tty,
651 unsigned int cmd, unsigned long arg)
653 struct serial_struct ser;
654 struct usb_serial_port *port = tty->driver_data;
656 dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd);
660 memset(&ser, 0, sizeof ser);
661 ser.type = PORT_16654;
662 ser.line = port->serial->minor;
663 ser.port = port->number;
664 ser.baud_base = 460800;
666 if (copy_to_user((void __user *)arg, &ser, sizeof ser))
671 dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd);
677 static void pl2303_break_ctl(struct tty_struct *tty, int break_state)
679 struct usb_serial_port *port = tty->driver_data;
680 struct usb_serial *serial = port->serial;
684 if (break_state == 0)
688 dev_dbg(&port->dev, "%s - turning break %s\n", __func__,
689 state == BREAK_OFF ? "off" : "on");
691 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
692 BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
695 dev_err(&port->dev, "error sending break = %d\n", result);
698 static void pl2303_update_line_status(struct usb_serial_port *port,
700 unsigned int actual_length)
703 struct pl2303_private *priv = usb_get_serial_port_data(port);
704 struct tty_struct *tty;
706 u8 status_idx = UART_STATE;
707 u8 length = UART_STATE + 1;
711 idv = le16_to_cpu(port->serial->dev->descriptor.idVendor);
712 idp = le16_to_cpu(port->serial->dev->descriptor.idProduct);
715 if (idv == SIEMENS_VENDOR_ID) {
716 if (idp == SIEMENS_PRODUCT_ID_X65 ||
717 idp == SIEMENS_PRODUCT_ID_SX1 ||
718 idp == SIEMENS_PRODUCT_ID_X75) {
725 if (actual_length < length)
728 /* Save off the uart status for others to look at */
729 spin_lock_irqsave(&priv->lock, flags);
730 prev_line_status = priv->line_status;
731 priv->line_status = data[status_idx];
732 spin_unlock_irqrestore(&priv->lock, flags);
733 if (priv->line_status & UART_BREAK_ERROR)
734 usb_serial_handle_break(port);
735 wake_up_interruptible(&port->port.delta_msr_wait);
737 tty = tty_port_tty_get(&port->port);
740 if ((priv->line_status ^ prev_line_status) & UART_DCD)
741 usb_serial_handle_dcd_change(port, tty,
742 priv->line_status & UART_DCD);
746 static void pl2303_read_int_callback(struct urb *urb)
748 struct usb_serial_port *port = urb->context;
749 unsigned char *data = urb->transfer_buffer;
750 unsigned int actual_length = urb->actual_length;
751 int status = urb->status;
761 /* this urb is terminated, clean up */
762 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
766 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
771 usb_serial_debug_data(&port->dev, __func__,
772 urb->actual_length, urb->transfer_buffer);
774 pl2303_update_line_status(port, data, actual_length);
777 retval = usb_submit_urb(urb, GFP_ATOMIC);
780 "%s - usb_submit_urb failed with result %d\n",
784 static void pl2303_process_read_urb(struct urb *urb)
786 struct usb_serial_port *port = urb->context;
787 struct pl2303_private *priv = usb_get_serial_port_data(port);
788 unsigned char *data = urb->transfer_buffer;
789 char tty_flag = TTY_NORMAL;
794 /* update line status */
795 spin_lock_irqsave(&priv->lock, flags);
796 line_status = priv->line_status;
797 priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
798 spin_unlock_irqrestore(&priv->lock, flags);
799 wake_up_interruptible(&port->port.delta_msr_wait);
801 if (!urb->actual_length)
804 /* break takes precedence over parity, */
805 /* which takes precedence over framing errors */
806 if (line_status & UART_BREAK_ERROR)
807 tty_flag = TTY_BREAK;
808 else if (line_status & UART_PARITY_ERROR)
809 tty_flag = TTY_PARITY;
810 else if (line_status & UART_FRAME_ERROR)
811 tty_flag = TTY_FRAME;
812 dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag);
814 /* overrun is special, not associated with a char */
815 if (line_status & UART_OVERRUN_ERROR)
816 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
818 if (port->port.console && port->sysrq) {
819 for (i = 0; i < urb->actual_length; ++i)
820 if (!usb_serial_handle_sysrq_char(port, data[i]))
821 tty_insert_flip_char(&port->port, data[i],
824 tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
828 tty_flip_buffer_push(&port->port);
831 /* All of the device info needed for the PL2303 SIO serial converter */
832 static struct usb_serial_driver pl2303_device = {
834 .owner = THIS_MODULE,
837 .id_table = id_table,
840 .bulk_out_size = 256,
842 .close = pl2303_close,
843 .dtr_rts = pl2303_dtr_rts,
844 .carrier_raised = pl2303_carrier_raised,
845 .ioctl = pl2303_ioctl,
846 .break_ctl = pl2303_break_ctl,
847 .set_termios = pl2303_set_termios,
848 .tiocmget = pl2303_tiocmget,
849 .tiocmset = pl2303_tiocmset,
850 .tiocmiwait = pl2303_tiocmiwait,
851 .process_read_urb = pl2303_process_read_urb,
852 .read_int_callback = pl2303_read_int_callback,
853 .attach = pl2303_startup,
854 .release = pl2303_release,
855 .port_probe = pl2303_port_probe,
856 .port_remove = pl2303_port_remove,
859 static struct usb_serial_driver * const serial_drivers[] = {
863 module_usb_serial_driver(serial_drivers, id_table);
865 MODULE_DESCRIPTION(DRIVER_DESC);
866 MODULE_LICENSE("GPL");