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>
32 #include <asm/unaligned.h>
38 #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver"
40 static const struct usb_device_id id_table
[] = {
41 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID
) },
42 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_RSAQ2
) },
43 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_DCU11
) },
44 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_RSAQ3
) },
45 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_PHAROS
) },
46 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_ALDIGA
) },
47 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_MMX
) },
48 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_GPRS
) },
49 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_HCR331
) },
50 { USB_DEVICE(PL2303_VENDOR_ID
, PL2303_PRODUCT_ID_MOTOROLA
) },
51 { USB_DEVICE(IODATA_VENDOR_ID
, IODATA_PRODUCT_ID
) },
52 { USB_DEVICE(IODATA_VENDOR_ID
, IODATA_PRODUCT_ID_RSAQ5
) },
53 { USB_DEVICE(ATEN_VENDOR_ID
, ATEN_PRODUCT_ID
) },
54 { USB_DEVICE(ATEN_VENDOR_ID2
, ATEN_PRODUCT_ID
) },
55 { USB_DEVICE(ELCOM_VENDOR_ID
, ELCOM_PRODUCT_ID
) },
56 { USB_DEVICE(ELCOM_VENDOR_ID
, ELCOM_PRODUCT_ID_UCSGT
) },
57 { USB_DEVICE(ITEGNO_VENDOR_ID
, ITEGNO_PRODUCT_ID
) },
58 { USB_DEVICE(ITEGNO_VENDOR_ID
, ITEGNO_PRODUCT_ID_2080
) },
59 { USB_DEVICE(MA620_VENDOR_ID
, MA620_PRODUCT_ID
) },
60 { USB_DEVICE(RATOC_VENDOR_ID
, RATOC_PRODUCT_ID
) },
61 { USB_DEVICE(TRIPP_VENDOR_ID
, TRIPP_PRODUCT_ID
) },
62 { USB_DEVICE(RADIOSHACK_VENDOR_ID
, RADIOSHACK_PRODUCT_ID
) },
63 { USB_DEVICE(DCU10_VENDOR_ID
, DCU10_PRODUCT_ID
) },
64 { USB_DEVICE(SITECOM_VENDOR_ID
, SITECOM_PRODUCT_ID
) },
65 { USB_DEVICE(ALCATEL_VENDOR_ID
, ALCATEL_PRODUCT_ID
) },
66 { USB_DEVICE(SAMSUNG_VENDOR_ID
, SAMSUNG_PRODUCT_ID
) },
67 { USB_DEVICE(SIEMENS_VENDOR_ID
, SIEMENS_PRODUCT_ID_SX1
) },
68 { USB_DEVICE(SIEMENS_VENDOR_ID
, SIEMENS_PRODUCT_ID_X65
) },
69 { USB_DEVICE(SIEMENS_VENDOR_ID
, SIEMENS_PRODUCT_ID_X75
) },
70 { USB_DEVICE(SIEMENS_VENDOR_ID
, SIEMENS_PRODUCT_ID_EF81
) },
71 { USB_DEVICE(BENQ_VENDOR_ID
, BENQ_PRODUCT_ID_S81
) }, /* Benq/Siemens S81 */
72 { USB_DEVICE(SYNTECH_VENDOR_ID
, SYNTECH_PRODUCT_ID
) },
73 { USB_DEVICE(NOKIA_CA42_VENDOR_ID
, NOKIA_CA42_PRODUCT_ID
) },
74 { USB_DEVICE(CA_42_CA42_VENDOR_ID
, CA_42_CA42_PRODUCT_ID
) },
75 { USB_DEVICE(SAGEM_VENDOR_ID
, SAGEM_PRODUCT_ID
) },
76 { USB_DEVICE(LEADTEK_VENDOR_ID
, LEADTEK_9531_PRODUCT_ID
) },
77 { USB_DEVICE(SPEEDDRAGON_VENDOR_ID
, SPEEDDRAGON_PRODUCT_ID
) },
78 { USB_DEVICE(DATAPILOT_U2_VENDOR_ID
, DATAPILOT_U2_PRODUCT_ID
) },
79 { USB_DEVICE(BELKIN_VENDOR_ID
, BELKIN_PRODUCT_ID
) },
80 { USB_DEVICE(ALCOR_VENDOR_ID
, ALCOR_PRODUCT_ID
) },
81 { USB_DEVICE(WS002IN_VENDOR_ID
, WS002IN_PRODUCT_ID
) },
82 { USB_DEVICE(COREGA_VENDOR_ID
, COREGA_PRODUCT_ID
) },
83 { USB_DEVICE(YCCABLE_VENDOR_ID
, YCCABLE_PRODUCT_ID
) },
84 { USB_DEVICE(SUPERIAL_VENDOR_ID
, SUPERIAL_PRODUCT_ID
) },
85 { USB_DEVICE(HP_VENDOR_ID
, HP_LD220_PRODUCT_ID
) },
86 { USB_DEVICE(CRESSI_VENDOR_ID
, CRESSI_EDY_PRODUCT_ID
) },
87 { USB_DEVICE(ZEAGLE_VENDOR_ID
, ZEAGLE_N2ITION3_PRODUCT_ID
) },
88 { USB_DEVICE(SONY_VENDOR_ID
, SONY_QN3USB_PRODUCT_ID
) },
89 { USB_DEVICE(SANWA_VENDOR_ID
, SANWA_PRODUCT_ID
) },
90 { USB_DEVICE(ADLINK_VENDOR_ID
, ADLINK_ND6530_PRODUCT_ID
) },
91 { USB_DEVICE(SMART_VENDOR_ID
, SMART_PRODUCT_ID
) },
92 { } /* Terminating entry */
95 MODULE_DEVICE_TABLE(usb
, id_table
);
97 #define SET_LINE_REQUEST_TYPE 0x21
98 #define SET_LINE_REQUEST 0x20
100 #define SET_CONTROL_REQUEST_TYPE 0x21
101 #define SET_CONTROL_REQUEST 0x22
102 #define CONTROL_DTR 0x01
103 #define CONTROL_RTS 0x02
105 #define BREAK_REQUEST_TYPE 0x21
106 #define BREAK_REQUEST 0x23
107 #define BREAK_ON 0xffff
108 #define BREAK_OFF 0x0000
110 #define GET_LINE_REQUEST_TYPE 0xa1
111 #define GET_LINE_REQUEST 0x21
113 #define VENDOR_WRITE_REQUEST_TYPE 0x40
114 #define VENDOR_WRITE_REQUEST 0x01
116 #define VENDOR_READ_REQUEST_TYPE 0xc0
117 #define VENDOR_READ_REQUEST 0x01
119 #define UART_STATE 0x08
120 #define UART_STATE_TRANSIENT_MASK 0x74
121 #define UART_DCD 0x01
122 #define UART_DSR 0x02
123 #define UART_BREAK_ERROR 0x04
124 #define UART_RING 0x08
125 #define UART_FRAME_ERROR 0x10
126 #define UART_PARITY_ERROR 0x20
127 #define UART_OVERRUN_ERROR 0x40
128 #define UART_CTS 0x80
132 type_0
, /* don't know the difference between type 0 and */
133 type_1
, /* type 1, until someone from prolific tells us... */
134 HX
, /* HX version of the pl2303 chip */
137 struct pl2303_serial_private
{
138 enum pl2303_type type
;
141 struct pl2303_private
{
147 static int pl2303_vendor_read(__u16 value
, __u16 index
,
148 struct usb_serial
*serial
, unsigned char *buf
)
150 int res
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
151 VENDOR_READ_REQUEST
, VENDOR_READ_REQUEST_TYPE
,
152 value
, index
, buf
, 1, 100);
153 dev_dbg(&serial
->interface
->dev
, "0x%x:0x%x:0x%x:0x%x %d - %x\n",
154 VENDOR_READ_REQUEST_TYPE
, VENDOR_READ_REQUEST
, value
, index
,
159 static int pl2303_vendor_write(__u16 value
, __u16 index
,
160 struct usb_serial
*serial
)
162 int res
= usb_control_msg(serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0),
163 VENDOR_WRITE_REQUEST
, VENDOR_WRITE_REQUEST_TYPE
,
164 value
, index
, NULL
, 0, 100);
165 dev_dbg(&serial
->interface
->dev
, "0x%x:0x%x:0x%x:0x%x %d\n",
166 VENDOR_WRITE_REQUEST_TYPE
, VENDOR_WRITE_REQUEST
, value
, index
,
171 static int pl2303_startup(struct usb_serial
*serial
)
173 struct pl2303_serial_private
*spriv
;
174 enum pl2303_type type
= type_0
;
177 spriv
= kzalloc(sizeof(*spriv
), GFP_KERNEL
);
181 buf
= kmalloc(10, GFP_KERNEL
);
187 if (serial
->dev
->descriptor
.bDeviceClass
== 0x02)
189 else if (serial
->dev
->descriptor
.bMaxPacketSize0
== 0x40)
191 else if (serial
->dev
->descriptor
.bDeviceClass
== 0x00)
193 else if (serial
->dev
->descriptor
.bDeviceClass
== 0xFF)
195 dev_dbg(&serial
->interface
->dev
, "device type: %d\n", type
);
198 usb_set_serial_data(serial
, spriv
);
200 pl2303_vendor_read(0x8484, 0, serial
, buf
);
201 pl2303_vendor_write(0x0404, 0, serial
);
202 pl2303_vendor_read(0x8484, 0, serial
, buf
);
203 pl2303_vendor_read(0x8383, 0, serial
, buf
);
204 pl2303_vendor_read(0x8484, 0, serial
, buf
);
205 pl2303_vendor_write(0x0404, 1, serial
);
206 pl2303_vendor_read(0x8484, 0, serial
, buf
);
207 pl2303_vendor_read(0x8383, 0, serial
, buf
);
208 pl2303_vendor_write(0, 1, serial
);
209 pl2303_vendor_write(1, 0, serial
);
211 pl2303_vendor_write(2, 0x44, serial
);
213 pl2303_vendor_write(2, 0x24, serial
);
219 static void pl2303_release(struct usb_serial
*serial
)
221 struct pl2303_serial_private
*spriv
;
223 spriv
= usb_get_serial_data(serial
);
227 static int pl2303_port_probe(struct usb_serial_port
*port
)
229 struct pl2303_private
*priv
;
231 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
235 spin_lock_init(&priv
->lock
);
237 usb_set_serial_port_data(port
, priv
);
239 port
->port
.drain_delay
= 256;
244 static int pl2303_port_remove(struct usb_serial_port
*port
)
246 struct pl2303_private
*priv
;
248 priv
= usb_get_serial_port_data(port
);
254 static int pl2303_set_control_lines(struct usb_serial_port
*port
, u8 value
)
256 struct usb_device
*dev
= port
->serial
->dev
;
259 retval
= usb_control_msg(dev
, usb_sndctrlpipe(dev
, 0),
260 SET_CONTROL_REQUEST
, SET_CONTROL_REQUEST_TYPE
,
261 value
, 0, NULL
, 0, 100);
262 dev_dbg(&port
->dev
, "%s - value = %d, retval = %d\n", __func__
,
267 static void pl2303_encode_baudrate(struct tty_struct
*tty
,
268 struct usb_serial_port
*port
,
271 const int baud_sup
[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600,
272 4800, 7200, 9600, 14400, 19200, 28800, 38400,
273 57600, 115200, 230400, 460800, 500000, 614400,
274 921600, 1228800, 2457600, 3000000, 6000000 };
276 struct usb_serial
*serial
= port
->serial
;
277 struct pl2303_serial_private
*spriv
= usb_get_serial_data(serial
);
282 * NOTE: Only the values defined in baud_sup are supported!
283 * => if unsupported values are set, the PL2303 seems to use
284 * 9600 baud (at least my PL2303X always does)
286 baud
= tty_get_baud_rate(tty
);
287 dev_dbg(&port
->dev
, "baud requested = %d\n", baud
);
291 /* Set baudrate to nearest supported value */
292 for (i
= 0; i
< ARRAY_SIZE(baud_sup
); ++i
) {
293 if (baud_sup
[i
] > baud
)
297 if (i
== ARRAY_SIZE(baud_sup
))
298 baud
= baud_sup
[i
- 1];
299 else if (i
> 0 && (baud_sup
[i
] - baud
) > (baud
- baud_sup
[i
- 1]))
300 baud
= baud_sup
[i
- 1];
304 /* type_0, type_1 only support up to 1228800 baud */
305 if (spriv
->type
!= HX
)
306 baud
= min_t(int, baud
, 1228800);
308 if (spriv
->type
!= HX
|| baud
<= 115200) {
309 /* Direct (standard) baud rate encoding method */
310 put_unaligned_le32(baud
, buf
);
313 * NOTE: it's not clear if the type_0/1 chips
314 * support this method
316 * Apparently the formula for higher speeds is:
317 * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
319 unsigned tmp
= 12000000 * 32 / baud
;
322 buf
[1] = (tmp
>= 256);
330 /* Save resulting baud rate */
331 tty_encode_baud_rate(tty
, baud
, baud
);
332 dev_dbg(&port
->dev
, "baud set = %d\n", baud
);
335 static void pl2303_set_termios(struct tty_struct
*tty
,
336 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
338 struct usb_serial
*serial
= port
->serial
;
339 struct pl2303_serial_private
*spriv
= usb_get_serial_data(serial
);
340 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
347 * The PL2303 is reported to lose bytes if you change serial settings
348 * even to the same values as before. Thus we actually need to filter
349 * in this specific case.
351 if (old_termios
&& !tty_termios_hw_change(&tty
->termios
, old_termios
))
354 buf
= kzalloc(7, GFP_KERNEL
);
356 dev_err(&port
->dev
, "%s - out of memory.\n", __func__
);
357 /* Report back no change occurred */
359 tty
->termios
= *old_termios
;
363 i
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
364 GET_LINE_REQUEST
, GET_LINE_REQUEST_TYPE
,
366 dev_dbg(&port
->dev
, "0xa1:0x21:0:0 %d - %7ph\n", i
, buf
);
369 switch (C_CSIZE(tty
)) {
383 dev_dbg(&port
->dev
, "data bits = %d\n", buf
[6]);
386 /* For reference buf[0]:buf[3] baud rate value */
387 pl2303_encode_baudrate(tty
, port
, &buf
[0]);
389 /* For reference buf[4]=0 is 1 stop bits */
390 /* For reference buf[4]=1 is 1.5 stop bits */
391 /* For reference buf[4]=2 is 2 stop bits */
394 * NOTE: Comply with "real" UARTs / RS232:
395 * use 1.5 instead of 2 stop bits with 5 data bits
397 if (C_CSIZE(tty
) == CS5
) {
399 dev_dbg(&port
->dev
, "stop bits = 1.5\n");
402 dev_dbg(&port
->dev
, "stop bits = 2\n");
406 dev_dbg(&port
->dev
, "stop bits = 1\n");
410 /* For reference buf[5]=0 is none parity */
411 /* For reference buf[5]=1 is odd parity */
412 /* For reference buf[5]=2 is even parity */
413 /* For reference buf[5]=3 is mark parity */
414 /* For reference buf[5]=4 is space parity */
416 if (tty
->termios
.c_cflag
& CMSPAR
) {
418 dev_dbg(&port
->dev
, "parity = mark\n");
421 dev_dbg(&port
->dev
, "parity = odd\n");
424 if (tty
->termios
.c_cflag
& CMSPAR
) {
426 dev_dbg(&port
->dev
, "parity = space\n");
429 dev_dbg(&port
->dev
, "parity = even\n");
434 dev_dbg(&port
->dev
, "parity = none\n");
437 i
= usb_control_msg(serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0),
438 SET_LINE_REQUEST
, SET_LINE_REQUEST_TYPE
,
440 dev_dbg(&port
->dev
, "0x21:0x20:0:0 %d\n", i
);
442 /* change control lines if we are switching to or from B0 */
443 spin_lock_irqsave(&priv
->lock
, flags
);
444 control
= priv
->line_control
;
445 if (C_BAUD(tty
) == B0
)
446 priv
->line_control
&= ~(CONTROL_DTR
| CONTROL_RTS
);
447 else if (old_termios
&& (old_termios
->c_cflag
& CBAUD
) == B0
)
448 priv
->line_control
|= (CONTROL_DTR
| CONTROL_RTS
);
449 if (control
!= priv
->line_control
) {
450 control
= priv
->line_control
;
451 spin_unlock_irqrestore(&priv
->lock
, flags
);
452 pl2303_set_control_lines(port
, control
);
454 spin_unlock_irqrestore(&priv
->lock
, flags
);
458 i
= usb_control_msg(serial
->dev
, usb_rcvctrlpipe(serial
->dev
, 0),
459 GET_LINE_REQUEST
, GET_LINE_REQUEST_TYPE
,
461 dev_dbg(&port
->dev
, "0xa1:0x21:0:0 %d - %7ph\n", i
, buf
);
463 if (C_CRTSCTS(tty
)) {
464 if (spriv
->type
== HX
)
465 pl2303_vendor_write(0x0, 0x61, serial
);
467 pl2303_vendor_write(0x0, 0x41, serial
);
469 pl2303_vendor_write(0x0, 0x0, serial
);
475 static void pl2303_dtr_rts(struct usb_serial_port
*port
, int on
)
477 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
481 spin_lock_irqsave(&priv
->lock
, flags
);
482 /* Change DTR and RTS */
484 priv
->line_control
|= (CONTROL_DTR
| CONTROL_RTS
);
486 priv
->line_control
&= ~(CONTROL_DTR
| CONTROL_RTS
);
487 control
= priv
->line_control
;
488 spin_unlock_irqrestore(&priv
->lock
, flags
);
489 pl2303_set_control_lines(port
, control
);
492 static void pl2303_close(struct usb_serial_port
*port
)
494 usb_serial_generic_close(port
);
495 usb_kill_urb(port
->interrupt_in_urb
);
498 static int pl2303_open(struct tty_struct
*tty
, struct usb_serial_port
*port
)
500 struct usb_serial
*serial
= port
->serial
;
501 struct pl2303_serial_private
*spriv
= usb_get_serial_data(serial
);
504 if (spriv
->type
!= HX
) {
505 usb_clear_halt(serial
->dev
, port
->write_urb
->pipe
);
506 usb_clear_halt(serial
->dev
, port
->read_urb
->pipe
);
508 /* reset upstream data pipes */
509 pl2303_vendor_write(8, 0, serial
);
510 pl2303_vendor_write(9, 0, serial
);
515 pl2303_set_termios(tty
, port
, NULL
);
517 result
= usb_submit_urb(port
->interrupt_in_urb
, GFP_KERNEL
);
519 dev_err(&port
->dev
, "%s - failed submitting interrupt urb,"
520 " error %d\n", __func__
, result
);
524 result
= usb_serial_generic_open(tty
, port
);
526 usb_kill_urb(port
->interrupt_in_urb
);
533 static int pl2303_tiocmset(struct tty_struct
*tty
,
534 unsigned int set
, unsigned int clear
)
536 struct usb_serial_port
*port
= tty
->driver_data
;
537 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
542 spin_lock_irqsave(&priv
->lock
, flags
);
544 priv
->line_control
|= CONTROL_RTS
;
546 priv
->line_control
|= CONTROL_DTR
;
547 if (clear
& TIOCM_RTS
)
548 priv
->line_control
&= ~CONTROL_RTS
;
549 if (clear
& TIOCM_DTR
)
550 priv
->line_control
&= ~CONTROL_DTR
;
551 control
= priv
->line_control
;
552 spin_unlock_irqrestore(&priv
->lock
, flags
);
554 ret
= pl2303_set_control_lines(port
, control
);
556 return usb_translate_errors(ret
);
561 static int pl2303_tiocmget(struct tty_struct
*tty
)
563 struct usb_serial_port
*port
= tty
->driver_data
;
564 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
570 spin_lock_irqsave(&priv
->lock
, flags
);
571 mcr
= priv
->line_control
;
572 status
= priv
->line_status
;
573 spin_unlock_irqrestore(&priv
->lock
, flags
);
575 result
= ((mcr
& CONTROL_DTR
) ? TIOCM_DTR
: 0)
576 | ((mcr
& CONTROL_RTS
) ? TIOCM_RTS
: 0)
577 | ((status
& UART_CTS
) ? TIOCM_CTS
: 0)
578 | ((status
& UART_DSR
) ? TIOCM_DSR
: 0)
579 | ((status
& UART_RING
) ? TIOCM_RI
: 0)
580 | ((status
& UART_DCD
) ? TIOCM_CD
: 0);
582 dev_dbg(&port
->dev
, "%s - result = %x\n", __func__
, result
);
587 static int pl2303_carrier_raised(struct usb_serial_port
*port
)
589 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
590 if (priv
->line_status
& UART_DCD
)
595 static int pl2303_tiocmiwait(struct tty_struct
*tty
, unsigned long arg
)
597 struct usb_serial_port
*port
= tty
->driver_data
;
598 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
600 unsigned int prevstatus
;
602 unsigned int changed
;
604 spin_lock_irqsave(&priv
->lock
, flags
);
605 prevstatus
= priv
->line_status
;
606 spin_unlock_irqrestore(&priv
->lock
, flags
);
609 interruptible_sleep_on(&port
->port
.delta_msr_wait
);
610 /* see if a signal did it */
611 if (signal_pending(current
))
614 if (port
->serial
->disconnected
)
617 spin_lock_irqsave(&priv
->lock
, flags
);
618 status
= priv
->line_status
;
619 spin_unlock_irqrestore(&priv
->lock
, flags
);
621 changed
= prevstatus
^ status
;
623 if (((arg
& TIOCM_RNG
) && (changed
& UART_RING
)) ||
624 ((arg
& TIOCM_DSR
) && (changed
& UART_DSR
)) ||
625 ((arg
& TIOCM_CD
) && (changed
& UART_DCD
)) ||
626 ((arg
& TIOCM_CTS
) && (changed
& UART_CTS
))) {
635 static int pl2303_ioctl(struct tty_struct
*tty
,
636 unsigned int cmd
, unsigned long arg
)
638 struct serial_struct ser
;
639 struct usb_serial_port
*port
= tty
->driver_data
;
641 dev_dbg(&port
->dev
, "%s cmd = 0x%04x\n", __func__
, cmd
);
645 memset(&ser
, 0, sizeof ser
);
646 ser
.type
= PORT_16654
;
647 ser
.line
= port
->minor
;
648 ser
.port
= port
->port_number
;
649 ser
.baud_base
= 460800;
651 if (copy_to_user((void __user
*)arg
, &ser
, sizeof ser
))
656 dev_dbg(&port
->dev
, "%s not supported = 0x%04x\n", __func__
, cmd
);
662 static void pl2303_break_ctl(struct tty_struct
*tty
, int break_state
)
664 struct usb_serial_port
*port
= tty
->driver_data
;
665 struct usb_serial
*serial
= port
->serial
;
669 if (break_state
== 0)
673 dev_dbg(&port
->dev
, "%s - turning break %s\n", __func__
,
674 state
== BREAK_OFF
? "off" : "on");
676 result
= usb_control_msg(serial
->dev
, usb_sndctrlpipe(serial
->dev
, 0),
677 BREAK_REQUEST
, BREAK_REQUEST_TYPE
, state
,
680 dev_err(&port
->dev
, "error sending break = %d\n", result
);
683 static void pl2303_update_line_status(struct usb_serial_port
*port
,
685 unsigned int actual_length
)
688 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
689 struct tty_struct
*tty
;
691 u8 status_idx
= UART_STATE
;
692 u8 length
= UART_STATE
+ 1;
696 idv
= le16_to_cpu(port
->serial
->dev
->descriptor
.idVendor
);
697 idp
= le16_to_cpu(port
->serial
->dev
->descriptor
.idProduct
);
700 if (idv
== SIEMENS_VENDOR_ID
) {
701 if (idp
== SIEMENS_PRODUCT_ID_X65
||
702 idp
== SIEMENS_PRODUCT_ID_SX1
||
703 idp
== SIEMENS_PRODUCT_ID_X75
) {
710 if (actual_length
< length
)
713 /* Save off the uart status for others to look at */
714 spin_lock_irqsave(&priv
->lock
, flags
);
715 prev_line_status
= priv
->line_status
;
716 priv
->line_status
= data
[status_idx
];
717 spin_unlock_irqrestore(&priv
->lock
, flags
);
718 if (priv
->line_status
& UART_BREAK_ERROR
)
719 usb_serial_handle_break(port
);
720 wake_up_interruptible(&port
->port
.delta_msr_wait
);
722 tty
= tty_port_tty_get(&port
->port
);
725 if ((priv
->line_status
^ prev_line_status
) & UART_DCD
)
726 usb_serial_handle_dcd_change(port
, tty
,
727 priv
->line_status
& UART_DCD
);
731 static void pl2303_read_int_callback(struct urb
*urb
)
733 struct usb_serial_port
*port
= urb
->context
;
734 unsigned char *data
= urb
->transfer_buffer
;
735 unsigned int actual_length
= urb
->actual_length
;
736 int status
= urb
->status
;
746 /* this urb is terminated, clean up */
747 dev_dbg(&port
->dev
, "%s - urb shutting down with status: %d\n",
751 dev_dbg(&port
->dev
, "%s - nonzero urb status received: %d\n",
756 usb_serial_debug_data(&port
->dev
, __func__
,
757 urb
->actual_length
, urb
->transfer_buffer
);
759 pl2303_update_line_status(port
, data
, actual_length
);
762 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
765 "%s - usb_submit_urb failed with result %d\n",
769 static void pl2303_process_read_urb(struct urb
*urb
)
771 struct usb_serial_port
*port
= urb
->context
;
772 struct pl2303_private
*priv
= usb_get_serial_port_data(port
);
773 unsigned char *data
= urb
->transfer_buffer
;
774 char tty_flag
= TTY_NORMAL
;
779 /* update line status */
780 spin_lock_irqsave(&priv
->lock
, flags
);
781 line_status
= priv
->line_status
;
782 priv
->line_status
&= ~UART_STATE_TRANSIENT_MASK
;
783 spin_unlock_irqrestore(&priv
->lock
, flags
);
784 wake_up_interruptible(&port
->port
.delta_msr_wait
);
786 if (!urb
->actual_length
)
789 /* break takes precedence over parity, */
790 /* which takes precedence over framing errors */
791 if (line_status
& UART_BREAK_ERROR
)
792 tty_flag
= TTY_BREAK
;
793 else if (line_status
& UART_PARITY_ERROR
)
794 tty_flag
= TTY_PARITY
;
795 else if (line_status
& UART_FRAME_ERROR
)
796 tty_flag
= TTY_FRAME
;
798 if (tty_flag
!= TTY_NORMAL
)
799 dev_dbg(&port
->dev
, "%s - tty_flag = %d\n", __func__
,
801 /* overrun is special, not associated with a char */
802 if (line_status
& UART_OVERRUN_ERROR
)
803 tty_insert_flip_char(&port
->port
, 0, TTY_OVERRUN
);
805 if (port
->port
.console
&& port
->sysrq
) {
806 for (i
= 0; i
< urb
->actual_length
; ++i
)
807 if (!usb_serial_handle_sysrq_char(port
, data
[i
]))
808 tty_insert_flip_char(&port
->port
, data
[i
],
811 tty_insert_flip_string_fixed_flag(&port
->port
, data
, tty_flag
,
815 tty_flip_buffer_push(&port
->port
);
818 /* All of the device info needed for the PL2303 SIO serial converter */
819 static struct usb_serial_driver pl2303_device
= {
821 .owner
= THIS_MODULE
,
824 .id_table
= id_table
,
827 .bulk_out_size
= 256,
829 .close
= pl2303_close
,
830 .dtr_rts
= pl2303_dtr_rts
,
831 .carrier_raised
= pl2303_carrier_raised
,
832 .ioctl
= pl2303_ioctl
,
833 .break_ctl
= pl2303_break_ctl
,
834 .set_termios
= pl2303_set_termios
,
835 .tiocmget
= pl2303_tiocmget
,
836 .tiocmset
= pl2303_tiocmset
,
837 .tiocmiwait
= pl2303_tiocmiwait
,
838 .process_read_urb
= pl2303_process_read_urb
,
839 .read_int_callback
= pl2303_read_int_callback
,
840 .attach
= pl2303_startup
,
841 .release
= pl2303_release
,
842 .port_probe
= pl2303_port_probe
,
843 .port_remove
= pl2303_port_remove
,
846 static struct usb_serial_driver
* const serial_drivers
[] = {
850 module_usb_serial_driver(serial_drivers
, id_table
);
852 MODULE_DESCRIPTION(DRIVER_DESC
);
853 MODULE_LICENSE("GPL");