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(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
86 { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) },
87 { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
88 { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
89 { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
90 { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
91 { } /* Terminating entry */
94 MODULE_DEVICE_TABLE(usb, id_table);
96 #define SET_LINE_REQUEST_TYPE 0x21
97 #define SET_LINE_REQUEST 0x20
99 #define SET_CONTROL_REQUEST_TYPE 0x21
100 #define SET_CONTROL_REQUEST 0x22
101 #define CONTROL_DTR 0x01
102 #define CONTROL_RTS 0x02
104 #define BREAK_REQUEST_TYPE 0x21
105 #define BREAK_REQUEST 0x23
106 #define BREAK_ON 0xffff
107 #define BREAK_OFF 0x0000
109 #define GET_LINE_REQUEST_TYPE 0xa1
110 #define GET_LINE_REQUEST 0x21
112 #define VENDOR_WRITE_REQUEST_TYPE 0x40
113 #define VENDOR_WRITE_REQUEST 0x01
115 #define VENDOR_READ_REQUEST_TYPE 0xc0
116 #define VENDOR_READ_REQUEST 0x01
118 #define UART_STATE 0x08
119 #define UART_STATE_TRANSIENT_MASK 0x74
120 #define UART_DCD 0x01
121 #define UART_DSR 0x02
122 #define UART_BREAK_ERROR 0x04
123 #define UART_RING 0x08
124 #define UART_FRAME_ERROR 0x10
125 #define UART_PARITY_ERROR 0x20
126 #define UART_OVERRUN_ERROR 0x40
127 #define UART_CTS 0x80
131 type_0, /* don't know the difference between type 0 and */
132 type_1, /* type 1, until someone from prolific tells us... */
133 HX, /* HX version of the pl2303 chip */
136 struct pl2303_serial_private {
137 enum pl2303_type type;
140 struct pl2303_private {
146 static int pl2303_vendor_read(__u16 value, __u16 index,
147 struct usb_serial *serial, unsigned char *buf)
149 int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
150 VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
151 value, index, buf, 1, 100);
152 dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n",
153 VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index,
158 static int pl2303_vendor_write(__u16 value, __u16 index,
159 struct usb_serial *serial)
161 int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
162 VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
163 value, index, NULL, 0, 100);
164 dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n",
165 VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index,
170 static int pl2303_startup(struct usb_serial *serial)
172 struct pl2303_serial_private *spriv;
173 enum pl2303_type type = type_0;
176 spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
180 buf = kmalloc(10, GFP_KERNEL);
186 if (serial->dev->descriptor.bDeviceClass == 0x02)
188 else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
190 else if (serial->dev->descriptor.bDeviceClass == 0x00)
192 else if (serial->dev->descriptor.bDeviceClass == 0xFF)
194 dev_dbg(&serial->interface->dev, "device type: %d\n", type);
197 usb_set_serial_data(serial, spriv);
199 pl2303_vendor_read(0x8484, 0, serial, buf);
200 pl2303_vendor_write(0x0404, 0, serial);
201 pl2303_vendor_read(0x8484, 0, serial, buf);
202 pl2303_vendor_read(0x8383, 0, serial, buf);
203 pl2303_vendor_read(0x8484, 0, serial, buf);
204 pl2303_vendor_write(0x0404, 1, serial);
205 pl2303_vendor_read(0x8484, 0, serial, buf);
206 pl2303_vendor_read(0x8383, 0, serial, buf);
207 pl2303_vendor_write(0, 1, serial);
208 pl2303_vendor_write(1, 0, serial);
210 pl2303_vendor_write(2, 0x44, serial);
212 pl2303_vendor_write(2, 0x24, serial);
218 static void pl2303_release(struct usb_serial *serial)
220 struct pl2303_serial_private *spriv;
222 spriv = usb_get_serial_data(serial);
226 static int pl2303_port_probe(struct usb_serial_port *port)
228 struct pl2303_private *priv;
230 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
234 spin_lock_init(&priv->lock);
236 usb_set_serial_port_data(port, priv);
241 static int pl2303_port_remove(struct usb_serial_port *port)
243 struct pl2303_private *priv;
245 priv = usb_get_serial_port_data(port);
251 static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value)
253 struct usb_device *dev = port->serial->dev;
256 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
257 SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
258 value, 0, NULL, 0, 100);
259 dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__,
264 static void pl2303_set_termios(struct tty_struct *tty,
265 struct usb_serial_port *port, struct ktermios *old_termios)
267 struct usb_serial *serial = port->serial;
268 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
269 struct pl2303_private *priv = usb_get_serial_port_data(port);
276 const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600,
277 4800, 7200, 9600, 14400, 19200, 28800, 38400,
278 57600, 115200, 230400, 460800, 614400,
279 921600, 1228800, 2457600, 3000000, 6000000 };
280 int baud_floor, baud_ceil;
283 /* The PL2303 is reported to lose bytes if you change
284 serial settings even to the same values as before. Thus
285 we actually need to filter in this specific case */
287 if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
290 cflag = tty->termios.c_cflag;
292 buf = kzalloc(7, GFP_KERNEL);
294 dev_err(&port->dev, "%s - out of memory.\n", __func__);
295 /* Report back no change occurred */
297 tty->termios = *old_termios;
301 i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
302 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
304 dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i,
305 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]);
326 /* For reference buf[0]:buf[3] baud rate value */
327 /* NOTE: Only the values defined in baud_sup are supported !
328 * => if unsupported values are set, the PL2303 seems to use
329 * 9600 baud (at least my PL2303X always does)
331 baud = tty_get_baud_rate(tty);
332 dev_dbg(&port->dev, "baud requested = %d\n", baud);
334 /* Set baudrate to nearest supported value */
335 for (k=0; k<ARRAY_SIZE(baud_sup); k++) {
336 if (baud_sup[k] / baud) {
337 baud_ceil = baud_sup[k];
341 baud_floor = baud_sup[k-1];
342 if ((baud_ceil % baud)
343 > (baud % baud_floor))
351 if (baud > 1228800) {
352 /* type_0, type_1 only support up to 1228800 baud */
353 if (spriv->type != HX)
355 else if (baud > 6000000)
358 dev_dbg(&port->dev, "baud set = %d\n", baud);
359 if (baud <= 115200) {
360 buf[0] = baud & 0xff;
361 buf[1] = (baud >> 8) & 0xff;
362 buf[2] = (baud >> 16) & 0xff;
363 buf[3] = (baud >> 24) & 0xff;
365 /* apparently the formula for higher speeds is:
366 * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
368 unsigned tmp = 12*1000*1000*32 / baud;
371 buf[1] = (tmp >= 256);
380 /* For reference buf[4]=0 is 1 stop bits */
381 /* For reference buf[4]=1 is 1.5 stop bits */
382 /* For reference buf[4]=2 is 2 stop bits */
383 if (cflag & CSTOPB) {
384 /* NOTE: Comply with "real" UARTs / RS232:
385 * use 1.5 instead of 2 stop bits with 5 data bits
387 if ((cflag & CSIZE) == CS5) {
389 dev_dbg(&port->dev, "stop bits = 1.5\n");
392 dev_dbg(&port->dev, "stop bits = 2\n");
396 dev_dbg(&port->dev, "stop bits = 1\n");
399 if (cflag & PARENB) {
400 /* For reference buf[5]=0 is none parity */
401 /* For reference buf[5]=1 is odd parity */
402 /* For reference buf[5]=2 is even parity */
403 /* For reference buf[5]=3 is mark parity */
404 /* For reference buf[5]=4 is space parity */
405 if (cflag & PARODD) {
406 if (cflag & CMSPAR) {
408 dev_dbg(&port->dev, "parity = mark\n");
411 dev_dbg(&port->dev, "parity = odd\n");
414 if (cflag & CMSPAR) {
416 dev_dbg(&port->dev, "parity = space\n");
419 dev_dbg(&port->dev, "parity = even\n");
424 dev_dbg(&port->dev, "parity = none\n");
427 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
428 SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
430 dev_dbg(&port->dev, "0x21:0x20:0:0 %d\n", i);
432 /* change control lines if we are switching to or from B0 */
433 spin_lock_irqsave(&priv->lock, flags);
434 control = priv->line_control;
435 if ((cflag & CBAUD) == B0)
436 priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
437 else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
438 priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
439 if (control != priv->line_control) {
440 control = priv->line_control;
441 spin_unlock_irqrestore(&priv->lock, flags);
442 pl2303_set_control_lines(port, control);
444 spin_unlock_irqrestore(&priv->lock, flags);
447 buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
449 i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
450 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
452 dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x\n", i,
453 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
455 if (cflag & CRTSCTS) {
456 if (spriv->type == HX)
457 pl2303_vendor_write(0x0, 0x61, serial);
459 pl2303_vendor_write(0x0, 0x41, serial);
461 pl2303_vendor_write(0x0, 0x0, serial);
464 /* Save resulting baud rate */
466 tty_encode_baud_rate(tty, baud, baud);
471 static void pl2303_dtr_rts(struct usb_serial_port *port, int on)
473 struct pl2303_private *priv = usb_get_serial_port_data(port);
477 spin_lock_irqsave(&priv->lock, flags);
478 /* Change DTR and RTS */
480 priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
482 priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
483 control = priv->line_control;
484 spin_unlock_irqrestore(&priv->lock, flags);
485 pl2303_set_control_lines(port, control);
488 static void pl2303_close(struct usb_serial_port *port)
490 usb_serial_generic_close(port);
491 usb_kill_urb(port->interrupt_in_urb);
494 static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
496 struct usb_serial *serial = port->serial;
497 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
500 if (spriv->type != HX) {
501 usb_clear_halt(serial->dev, port->write_urb->pipe);
502 usb_clear_halt(serial->dev, port->read_urb->pipe);
504 /* reset upstream data pipes */
505 pl2303_vendor_write(8, 0, serial);
506 pl2303_vendor_write(9, 0, serial);
511 pl2303_set_termios(tty, port, NULL);
513 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
515 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
516 " error %d\n", __func__, result);
520 result = usb_serial_generic_open(tty, port);
522 usb_kill_urb(port->interrupt_in_urb);
526 port->port.drain_delay = 256;
530 static int pl2303_tiocmset(struct tty_struct *tty,
531 unsigned int set, unsigned int clear)
533 struct usb_serial_port *port = tty->driver_data;
534 struct pl2303_private *priv = usb_get_serial_port_data(port);
539 spin_lock_irqsave(&priv->lock, flags);
541 priv->line_control |= CONTROL_RTS;
543 priv->line_control |= CONTROL_DTR;
544 if (clear & TIOCM_RTS)
545 priv->line_control &= ~CONTROL_RTS;
546 if (clear & TIOCM_DTR)
547 priv->line_control &= ~CONTROL_DTR;
548 control = priv->line_control;
549 spin_unlock_irqrestore(&priv->lock, flags);
551 ret = pl2303_set_control_lines(port, control);
553 return usb_translate_errors(ret);
558 static int pl2303_tiocmget(struct tty_struct *tty)
560 struct usb_serial_port *port = tty->driver_data;
561 struct pl2303_private *priv = usb_get_serial_port_data(port);
567 spin_lock_irqsave(&priv->lock, flags);
568 mcr = priv->line_control;
569 status = priv->line_status;
570 spin_unlock_irqrestore(&priv->lock, flags);
572 result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
573 | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
574 | ((status & UART_CTS) ? TIOCM_CTS : 0)
575 | ((status & UART_DSR) ? TIOCM_DSR : 0)
576 | ((status & UART_RING) ? TIOCM_RI : 0)
577 | ((status & UART_DCD) ? TIOCM_CD : 0);
579 dev_dbg(&port->dev, "%s - result = %x\n", __func__, result);
584 static int pl2303_carrier_raised(struct usb_serial_port *port)
586 struct pl2303_private *priv = usb_get_serial_port_data(port);
587 if (priv->line_status & UART_DCD)
592 static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg)
594 struct usb_serial_port *port = tty->driver_data;
595 struct pl2303_private *priv = usb_get_serial_port_data(port);
597 unsigned int prevstatus;
599 unsigned int changed;
601 spin_lock_irqsave(&priv->lock, flags);
602 prevstatus = priv->line_status;
603 spin_unlock_irqrestore(&priv->lock, flags);
606 interruptible_sleep_on(&port->port.delta_msr_wait);
607 /* see if a signal did it */
608 if (signal_pending(current))
611 if (port->serial->disconnected)
614 spin_lock_irqsave(&priv->lock, flags);
615 status = priv->line_status;
616 spin_unlock_irqrestore(&priv->lock, flags);
618 changed = prevstatus ^ status;
620 if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
621 ((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
622 ((arg & TIOCM_CD) && (changed & UART_DCD)) ||
623 ((arg & TIOCM_CTS) && (changed & UART_CTS))) {
632 static int pl2303_ioctl(struct tty_struct *tty,
633 unsigned int cmd, unsigned long arg)
635 struct serial_struct ser;
636 struct usb_serial_port *port = tty->driver_data;
638 dev_dbg(&port->dev, "%s cmd = 0x%04x\n", __func__, cmd);
642 memset(&ser, 0, sizeof ser);
643 ser.type = PORT_16654;
644 ser.line = port->serial->minor;
645 ser.port = port->number;
646 ser.baud_base = 460800;
648 if (copy_to_user((void __user *)arg, &ser, sizeof ser))
653 dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd);
659 static void pl2303_break_ctl(struct tty_struct *tty, int break_state)
661 struct usb_serial_port *port = tty->driver_data;
662 struct usb_serial *serial = port->serial;
666 if (break_state == 0)
670 dev_dbg(&port->dev, "%s - turning break %s\n", __func__,
671 state == BREAK_OFF ? "off" : "on");
673 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
674 BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
677 dev_err(&port->dev, "error sending break = %d\n", result);
680 static void pl2303_update_line_status(struct usb_serial_port *port,
682 unsigned int actual_length)
685 struct pl2303_private *priv = usb_get_serial_port_data(port);
686 struct tty_struct *tty;
688 u8 status_idx = UART_STATE;
689 u8 length = UART_STATE + 1;
693 idv = le16_to_cpu(port->serial->dev->descriptor.idVendor);
694 idp = le16_to_cpu(port->serial->dev->descriptor.idProduct);
697 if (idv == SIEMENS_VENDOR_ID) {
698 if (idp == SIEMENS_PRODUCT_ID_X65 ||
699 idp == SIEMENS_PRODUCT_ID_SX1 ||
700 idp == SIEMENS_PRODUCT_ID_X75) {
707 if (actual_length < length)
710 /* Save off the uart status for others to look at */
711 spin_lock_irqsave(&priv->lock, flags);
712 prev_line_status = priv->line_status;
713 priv->line_status = data[status_idx];
714 spin_unlock_irqrestore(&priv->lock, flags);
715 if (priv->line_status & UART_BREAK_ERROR)
716 usb_serial_handle_break(port);
717 wake_up_interruptible(&port->port.delta_msr_wait);
719 tty = tty_port_tty_get(&port->port);
722 if ((priv->line_status ^ prev_line_status) & UART_DCD)
723 usb_serial_handle_dcd_change(port, tty,
724 priv->line_status & UART_DCD);
728 static void pl2303_read_int_callback(struct urb *urb)
730 struct usb_serial_port *port = urb->context;
731 unsigned char *data = urb->transfer_buffer;
732 unsigned int actual_length = urb->actual_length;
733 int status = urb->status;
743 /* this urb is terminated, clean up */
744 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
748 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
753 usb_serial_debug_data(&port->dev, __func__,
754 urb->actual_length, urb->transfer_buffer);
756 pl2303_update_line_status(port, data, actual_length);
759 retval = usb_submit_urb(urb, GFP_ATOMIC);
762 "%s - usb_submit_urb failed with result %d\n",
766 static void pl2303_process_read_urb(struct urb *urb)
768 struct usb_serial_port *port = urb->context;
769 struct pl2303_private *priv = usb_get_serial_port_data(port);
770 unsigned char *data = urb->transfer_buffer;
771 char tty_flag = TTY_NORMAL;
776 /* update line status */
777 spin_lock_irqsave(&priv->lock, flags);
778 line_status = priv->line_status;
779 priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
780 spin_unlock_irqrestore(&priv->lock, flags);
781 wake_up_interruptible(&port->port.delta_msr_wait);
783 if (!urb->actual_length)
786 /* break takes precedence over parity, */
787 /* which takes precedence over framing errors */
788 if (line_status & UART_BREAK_ERROR)
789 tty_flag = TTY_BREAK;
790 else if (line_status & UART_PARITY_ERROR)
791 tty_flag = TTY_PARITY;
792 else if (line_status & UART_FRAME_ERROR)
793 tty_flag = TTY_FRAME;
794 dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, tty_flag);
796 /* overrun is special, not associated with a char */
797 if (line_status & UART_OVERRUN_ERROR)
798 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
800 if (port->port.console && port->sysrq) {
801 for (i = 0; i < urb->actual_length; ++i)
802 if (!usb_serial_handle_sysrq_char(port, data[i]))
803 tty_insert_flip_char(&port->port, data[i],
806 tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
810 tty_flip_buffer_push(&port->port);
813 /* All of the device info needed for the PL2303 SIO serial converter */
814 static struct usb_serial_driver pl2303_device = {
816 .owner = THIS_MODULE,
819 .id_table = id_table,
822 .bulk_out_size = 256,
824 .close = pl2303_close,
825 .dtr_rts = pl2303_dtr_rts,
826 .carrier_raised = pl2303_carrier_raised,
827 .ioctl = pl2303_ioctl,
828 .break_ctl = pl2303_break_ctl,
829 .set_termios = pl2303_set_termios,
830 .tiocmget = pl2303_tiocmget,
831 .tiocmset = pl2303_tiocmset,
832 .tiocmiwait = pl2303_tiocmiwait,
833 .process_read_urb = pl2303_process_read_urb,
834 .read_int_callback = pl2303_read_int_callback,
835 .attach = pl2303_startup,
836 .release = pl2303_release,
837 .port_probe = pl2303_port_probe,
838 .port_remove = pl2303_port_remove,
841 static struct usb_serial_driver * const serial_drivers[] = {
845 module_usb_serial_driver(serial_drivers, id_table);
847 MODULE_DESCRIPTION(DRIVER_DESC);
848 MODULE_LICENSE("GPL");