2 * KLSI KL5KUSB105 chip RS232 converter driver
4 * Copyright (C) 2001 Utz-Uwe Haus <haus@uuhaus.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * All information about the device was acquired using SniffUSB ans snoopUSB
13 * It was written out of frustration with the PalmConnect USB Serial adapter
15 * Neither Palm, nor their contractor (MCCI) or their supplier (KLSI) provided
16 * information that was not already available.
18 * It seems that KLSI bought some silicon-design information from ScanLogic,
19 * whose SL11R processor is at the core of the KL5KUSB chipset from KLSI.
20 * KLSI has firmware available for their devices; it is probable that the
21 * firmware differs from that used by KLSI in their products. If you have an
22 * original KLSI device and can provide some information on it, I would be
23 * most interested in adding support for it here. If you have any information
24 * on the protocol used (or find errors in my reverse-engineered stuff), please
27 * The code was only tested with a PalmConnect USB adapter; if you
28 * are adventurous, try it with any KLSI-based device and let me know how it
29 * breaks so that I can fix it!
33 * check modem line signals
34 * implement handshaking or decide that we do not support it
38 * 0.3a - implemented pools of write URBs
39 * 0.3 - alpha version for public testing
40 * 0.2 - TIOCMGET works, so autopilot(1) can be used!
41 * 0.1 - can be used to to pilot-xfer -p /dev/ttyUSB0 -l
43 * The driver skeleton is mainly based on mct_u232.c and various other
44 * pieces of code shamelessly copied from the drivers/usb/serial/ directory.
48 #include <linux/kernel.h>
49 #include <linux/errno.h>
50 #include <linux/init.h>
51 #include <linux/slab.h>
52 #include <linux/tty.h>
53 #include <linux/tty_driver.h>
54 #include <linux/tty_flip.h>
55 #include <linux/module.h>
56 #include <asm/uaccess.h>
57 #include <asm/unaligned.h>
58 #include <linux/usb.h>
59 #include <linux/usb/serial.h>
60 #include "kl5kusb105.h"
67 #define DRIVER_VERSION "v0.3a"
68 #define DRIVER_AUTHOR "Utz-Uwe Haus <haus@uuhaus.de>"
69 #define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver"
75 static int klsi_105_startup (struct usb_serial
*serial
);
76 static void klsi_105_shutdown (struct usb_serial
*serial
);
77 static int klsi_105_open (struct usb_serial_port
*port
,
79 static void klsi_105_close (struct usb_serial_port
*port
,
81 static int klsi_105_write (struct usb_serial_port
*port
,
82 const unsigned char *buf
,
84 static void klsi_105_write_bulk_callback (struct urb
*urb
);
85 static int klsi_105_chars_in_buffer (struct usb_serial_port
*port
);
86 static int klsi_105_write_room (struct usb_serial_port
*port
);
88 static void klsi_105_read_bulk_callback (struct urb
*urb
);
89 static void klsi_105_set_termios (struct usb_serial_port
*port
,
90 struct ktermios
*old
);
91 static void klsi_105_throttle (struct usb_serial_port
*port
);
92 static void klsi_105_unthrottle (struct usb_serial_port
*port
);
94 static void klsi_105_break_ctl (struct usb_serial_port *port,
97 static int klsi_105_tiocmget (struct usb_serial_port
*port
,
99 static int klsi_105_tiocmset (struct usb_serial_port
*port
,
100 struct file
*file
, unsigned int set
,
104 * All of the device info needed for the KLSI converters.
106 static struct usb_device_id id_table
[] = {
107 { USB_DEVICE(PALMCONNECT_VID
, PALMCONNECT_PID
) },
108 { USB_DEVICE(KLSI_VID
, KLSI_KL5KUSB105D_PID
) },
109 { } /* Terminating entry */
112 MODULE_DEVICE_TABLE (usb
, id_table
);
114 static struct usb_driver kl5kusb105d_driver
= {
115 .name
= "kl5kusb105d",
116 .probe
= usb_serial_probe
,
117 .disconnect
= usb_serial_disconnect
,
118 .id_table
= id_table
,
122 static struct usb_serial_driver kl5kusb105d_device
= {
124 .owner
= THIS_MODULE
,
125 .name
= "kl5kusb105d",
127 .description
= "KL5KUSB105D / PalmConnect",
128 .usb_driver
= &kl5kusb105d_driver
,
129 .id_table
= id_table
,
131 .open
= klsi_105_open
,
132 .close
= klsi_105_close
,
133 .write
= klsi_105_write
,
134 .write_bulk_callback
= klsi_105_write_bulk_callback
,
135 .chars_in_buffer
= klsi_105_chars_in_buffer
,
136 .write_room
= klsi_105_write_room
,
137 .read_bulk_callback
=klsi_105_read_bulk_callback
,
138 .set_termios
= klsi_105_set_termios
,
139 /*.break_ctl = klsi_105_break_ctl,*/
140 .tiocmget
= klsi_105_tiocmget
,
141 .tiocmset
= klsi_105_tiocmset
,
142 .attach
= klsi_105_startup
,
143 .shutdown
= klsi_105_shutdown
,
144 .throttle
= klsi_105_throttle
,
145 .unthrottle
= klsi_105_unthrottle
,
148 struct klsi_105_port_settings
{
149 __u8 pktlen
; /* always 5, it seems */
154 } __attribute__ ((packed
));
156 /* we implement a pool of NUM_URBS urbs per usb_serial */
158 #define URB_TRANSFER_BUFFER_SIZE 64
159 struct klsi_105_private
{
160 struct klsi_105_port_settings cfg
;
161 struct ktermios termios
;
162 unsigned long line_state
; /* modem line settings */
164 struct urb
* write_urb_pool
[NUM_URBS
];
166 unsigned long bytes_in
;
167 unsigned long bytes_out
;
172 * Handle vendor specific USB requests
176 #define KLSI_TIMEOUT 5000 /* default urb timeout */
178 static int klsi_105_chg_port_settings(struct usb_serial_port
*port
,
179 struct klsi_105_port_settings
*settings
)
183 rc
= usb_control_msg(port
->serial
->dev
,
184 usb_sndctrlpipe(port
->serial
->dev
, 0),
185 KL5KUSB105A_SIO_SET_DATA
,
186 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_INTERFACE
,
190 sizeof(struct klsi_105_port_settings
),
193 err("Change port settings failed (error = %d)", rc
);
194 info("%s - %d byte block, baudrate %x, databits %d, u1 %d, u2 %d",
197 settings
->baudrate
, settings
->databits
,
198 settings
->unknown1
, settings
->unknown2
);
200 } /* klsi_105_chg_port_settings */
202 /* translate a 16-bit status value from the device to linux's TIO bits */
203 static unsigned long klsi_105_status2linestate(const __u16 status
)
205 unsigned long res
= 0;
207 res
= ((status
& KL5KUSB105A_DSR
) ? TIOCM_DSR
: 0)
208 | ((status
& KL5KUSB105A_CTS
) ? TIOCM_CTS
: 0)
214 * Read line control via vendor command and return result through
217 /* It seems that the status buffer has always only 2 bytes length */
218 #define KLSI_STATUSBUF_LEN 2
219 static int klsi_105_get_line_state(struct usb_serial_port
*port
,
220 unsigned long *line_state_p
)
223 __u8 status_buf
[KLSI_STATUSBUF_LEN
] = { -1,-1};
226 info("%s - sending SIO Poll request", __func__
);
227 rc
= usb_control_msg(port
->serial
->dev
,
228 usb_rcvctrlpipe(port
->serial
->dev
, 0),
229 KL5KUSB105A_SIO_POLL
,
230 USB_TYPE_VENDOR
| USB_DIR_IN
,
233 status_buf
, KLSI_STATUSBUF_LEN
,
237 err("Reading line status failed (error = %d)", rc
);
239 status
= le16_to_cpu(get_unaligned((__le16
*)status_buf
));
241 info("%s - read status %x %x", __func__
,
242 status_buf
[0], status_buf
[1]);
244 *line_state_p
= klsi_105_status2linestate(status
);
252 * Driver's tty interface functions
255 static int klsi_105_startup (struct usb_serial
*serial
)
257 struct klsi_105_private
*priv
;
260 /* check if we support the product id (see keyspan.c)
264 /* allocate the private data structure */
265 for (i
=0; i
<serial
->num_ports
; i
++) {
266 priv
= kmalloc(sizeof(struct klsi_105_private
),
269 dbg("%skmalloc for klsi_105_private failed.", __func__
);
273 /* set initial values for control structures */
274 priv
->cfg
.pktlen
= 5;
275 priv
->cfg
.baudrate
= kl5kusb105a_sio_b9600
;
276 priv
->cfg
.databits
= kl5kusb105a_dtb_8
;
277 priv
->cfg
.unknown1
= 0;
278 priv
->cfg
.unknown2
= 1;
280 priv
->line_state
= 0;
284 usb_set_serial_port_data(serial
->port
[i
], priv
);
286 spin_lock_init (&priv
->lock
);
287 for (j
=0; j
<NUM_URBS
; j
++) {
288 struct urb
* urb
= usb_alloc_urb(0, GFP_KERNEL
);
290 priv
->write_urb_pool
[j
] = urb
;
292 err("No more urbs???");
296 urb
->transfer_buffer
= kmalloc (URB_TRANSFER_BUFFER_SIZE
,
298 if (!urb
->transfer_buffer
) {
299 err("%s - out of memory for urb buffers.", __func__
);
304 /* priv->termios is left uninitalized until port opening */
305 init_waitqueue_head(&serial
->port
[i
]->write_wait
);
311 for (; i
>= 0; i
--) {
312 priv
= usb_get_serial_port_data(serial
->port
[i
]);
313 for (j
=0; j
< NUM_URBS
; j
++) {
314 if (priv
->write_urb_pool
[j
]) {
315 kfree(priv
->write_urb_pool
[j
]->transfer_buffer
);
316 usb_free_urb(priv
->write_urb_pool
[j
]);
319 usb_set_serial_port_data(serial
->port
[i
], NULL
);
322 } /* klsi_105_startup */
325 static void klsi_105_shutdown (struct usb_serial
*serial
)
331 /* stop reads and writes on all ports */
332 for (i
=0; i
< serial
->num_ports
; ++i
) {
333 struct klsi_105_private
*priv
= usb_get_serial_port_data(serial
->port
[i
]);
337 /* kill our write urb pool */
339 struct urb
**write_urbs
= priv
->write_urb_pool
;
340 spin_lock_irqsave(&priv
->lock
,flags
);
342 for (j
= 0; j
< NUM_URBS
; j
++) {
344 /* FIXME - uncomment the following
345 * usb_kill_urb call when the host
346 * controllers get fixed to set
347 * urb->dev = NULL after the urb is
348 * finished. Otherwise this call
350 /* usb_kill_urb(write_urbs[j]); */
351 kfree(write_urbs
[j
]->transfer_buffer
);
352 usb_free_urb (write_urbs
[j
]);
356 spin_unlock_irqrestore (&priv
->lock
, flags
);
359 usb_set_serial_port_data(serial
->port
[i
], NULL
);
362 } /* klsi_105_shutdown */
364 static int klsi_105_open (struct usb_serial_port
*port
, struct file
*filp
)
366 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
370 unsigned long line_state
;
371 struct klsi_105_port_settings cfg
;
374 dbg("%s port %d", __func__
, port
->number
);
376 /* force low_latency on so that our tty_push actually forces
378 * port->tty->low_latency = 1; */
380 /* Do a defined restart:
381 * Set up sane default baud rate and send the 'READ_ON'
383 * FIXME: set modem line control (how?)
384 * Then read the modem line control and store values in
388 cfg
.baudrate
= kl5kusb105a_sio_b9600
;
389 cfg
.databits
= kl5kusb105a_dtb_8
;
392 klsi_105_chg_port_settings(port
, &cfg
);
394 /* set up termios structure */
395 spin_lock_irqsave (&priv
->lock
, flags
);
396 priv
->termios
.c_iflag
= port
->tty
->termios
->c_iflag
;
397 priv
->termios
.c_oflag
= port
->tty
->termios
->c_oflag
;
398 priv
->termios
.c_cflag
= port
->tty
->termios
->c_cflag
;
399 priv
->termios
.c_lflag
= port
->tty
->termios
->c_lflag
;
400 for (i
=0; i
<NCCS
; i
++)
401 priv
->termios
.c_cc
[i
] = port
->tty
->termios
->c_cc
[i
];
402 priv
->cfg
.pktlen
= cfg
.pktlen
;
403 priv
->cfg
.baudrate
= cfg
.baudrate
;
404 priv
->cfg
.databits
= cfg
.databits
;
405 priv
->cfg
.unknown1
= cfg
.unknown1
;
406 priv
->cfg
.unknown2
= cfg
.unknown2
;
407 spin_unlock_irqrestore (&priv
->lock
, flags
);
409 /* READ_ON and urb submission */
410 usb_fill_bulk_urb(port
->read_urb
, port
->serial
->dev
,
411 usb_rcvbulkpipe(port
->serial
->dev
,
412 port
->bulk_in_endpointAddress
),
413 port
->read_urb
->transfer_buffer
,
414 port
->read_urb
->transfer_buffer_length
,
415 klsi_105_read_bulk_callback
,
418 rc
= usb_submit_urb(port
->read_urb
, GFP_KERNEL
);
420 err("%s - failed submitting read urb, error %d", __func__
, rc
);
425 rc
= usb_control_msg(port
->serial
->dev
,
426 usb_sndctrlpipe(port
->serial
->dev
,0),
427 KL5KUSB105A_SIO_CONFIGURE
,
428 USB_TYPE_VENDOR
|USB_DIR_OUT
|USB_RECIP_INTERFACE
,
429 KL5KUSB105A_SIO_CONFIGURE_READ_ON
,
435 err("Enabling read failed (error = %d)", rc
);
438 dbg("%s - enabled reading", __func__
);
440 rc
= klsi_105_get_line_state(port
, &line_state
);
442 spin_lock_irqsave (&priv
->lock
, flags
);
443 priv
->line_state
= line_state
;
444 spin_unlock_irqrestore (&priv
->lock
, flags
);
445 dbg("%s - read line state 0x%lx", __func__
, line_state
);
452 } /* klsi_105_open */
455 static void klsi_105_close (struct usb_serial_port
*port
, struct file
*filp
)
457 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
460 dbg("%s port %d", __func__
, port
->number
);
462 mutex_lock(&port
->serial
->disc_mutex
);
463 if (!port
->serial
->disconnected
) {
465 rc
= usb_control_msg (port
->serial
->dev
,
466 usb_sndctrlpipe(port
->serial
->dev
, 0),
467 KL5KUSB105A_SIO_CONFIGURE
,
468 USB_TYPE_VENDOR
| USB_DIR_OUT
,
469 KL5KUSB105A_SIO_CONFIGURE_READ_OFF
,
474 err("Disabling read failed (error = %d)", rc
);
476 mutex_unlock(&port
->serial
->disc_mutex
);
478 /* shutdown our bulk reads and writes */
479 usb_kill_urb(port
->write_urb
);
480 usb_kill_urb(port
->read_urb
);
481 /* unlink our write pool */
483 /* wgg - do I need this? I think so. */
484 usb_kill_urb(port
->interrupt_in_urb
);
485 info("kl5kusb105 port stats: %ld bytes in, %ld bytes out", priv
->bytes_in
, priv
->bytes_out
);
486 } /* klsi_105_close */
489 /* We need to write a complete 64-byte data block and encode the
490 * number actually sent in the first double-byte, LSB-order. That
491 * leaves at most 62 bytes of payload.
493 #define KLSI_105_DATA_OFFSET 2 /* in the bulk urb data block */
496 static int klsi_105_write (struct usb_serial_port
*port
,
497 const unsigned char *buf
, int count
)
499 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
503 dbg("%s - port %d", __func__
, port
->number
);
506 /* try to find a free urb (write 0 bytes if none) */
507 struct urb
*urb
= NULL
;
510 /* since the pool is per-port we might not need the spin lock !? */
511 spin_lock_irqsave (&priv
->lock
, flags
);
512 for (i
=0; i
<NUM_URBS
; i
++) {
513 if (priv
->write_urb_pool
[i
]->status
!= -EINPROGRESS
) {
514 urb
= priv
->write_urb_pool
[i
];
515 dbg("%s - using pool URB %d", __func__
, i
);
519 spin_unlock_irqrestore (&priv
->lock
, flags
);
522 dbg("%s - no more free urbs", __func__
);
526 if (urb
->transfer_buffer
== NULL
) {
527 urb
->transfer_buffer
= kmalloc (URB_TRANSFER_BUFFER_SIZE
, GFP_ATOMIC
);
528 if (urb
->transfer_buffer
== NULL
) {
529 err("%s - no more kernel memory...", __func__
);
534 size
= min (count
, port
->bulk_out_size
- KLSI_105_DATA_OFFSET
);
535 size
= min (size
, URB_TRANSFER_BUFFER_SIZE
- KLSI_105_DATA_OFFSET
);
537 memcpy (urb
->transfer_buffer
+ KLSI_105_DATA_OFFSET
, buf
, size
);
539 /* write payload size into transfer buffer */
540 ((__u8
*)urb
->transfer_buffer
)[0] = (__u8
) (size
& 0xFF);
541 ((__u8
*)urb
->transfer_buffer
)[1] = (__u8
) ((size
& 0xFF00)>>8);
544 usb_fill_bulk_urb(urb
, port
->serial
->dev
,
545 usb_sndbulkpipe(port
->serial
->dev
,
546 port
->bulk_out_endpointAddress
),
547 urb
->transfer_buffer
,
548 URB_TRANSFER_BUFFER_SIZE
,
549 klsi_105_write_bulk_callback
,
552 /* send the data out the bulk port */
553 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
555 err("%s - failed submitting write urb, error %d", __func__
, result
);
563 /* lockless, but it's for debug info only... */
564 priv
->bytes_out
+=bytes_sent
;
566 return bytes_sent
; /* that's how much we wrote */
567 } /* klsi_105_write */
569 static void klsi_105_write_bulk_callback ( struct urb
*urb
)
571 struct usb_serial_port
*port
= urb
->context
;
572 int status
= urb
->status
;
574 dbg("%s - port %d", __func__
, port
->number
);
577 dbg("%s - nonzero write bulk status received: %d", __func__
,
582 usb_serial_port_softint(port
);
583 } /* klsi_105_write_bulk_completion_callback */
586 /* return number of characters currently in the writing process */
587 static int klsi_105_chars_in_buffer (struct usb_serial_port
*port
)
592 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
594 spin_lock_irqsave (&priv
->lock
, flags
);
596 for (i
= 0; i
< NUM_URBS
; ++i
) {
597 if (priv
->write_urb_pool
[i
]->status
== -EINPROGRESS
) {
598 chars
+= URB_TRANSFER_BUFFER_SIZE
;
602 spin_unlock_irqrestore (&priv
->lock
, flags
);
604 dbg("%s - returns %d", __func__
, chars
);
608 static int klsi_105_write_room (struct usb_serial_port
*port
)
613 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
615 spin_lock_irqsave (&priv
->lock
, flags
);
616 for (i
= 0; i
< NUM_URBS
; ++i
) {
617 if (priv
->write_urb_pool
[i
]->status
!= -EINPROGRESS
) {
618 room
+= URB_TRANSFER_BUFFER_SIZE
;
622 spin_unlock_irqrestore (&priv
->lock
, flags
);
624 dbg("%s - returns %d", __func__
, room
);
630 static void klsi_105_read_bulk_callback (struct urb
*urb
)
632 struct usb_serial_port
*port
= urb
->context
;
633 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
634 struct tty_struct
*tty
;
635 unsigned char *data
= urb
->transfer_buffer
;
637 int status
= urb
->status
;
639 dbg("%s - port %d", __func__
, port
->number
);
641 /* The urb might have been killed. */
643 dbg("%s - nonzero read bulk status received: %d", __func__
,
648 /* The data received is again preceded by a length double-byte in LSB-
649 * first order (see klsi_105_write() )
651 if (urb
->actual_length
== 0) {
652 /* empty urbs seem to happen, we ignore them */
653 /* dbg("%s - emtpy URB", __func__); */
655 } else if (urb
->actual_length
<= 2) {
656 dbg("%s - size %d URB not understood", __func__
,
658 usb_serial_debug_data(debug
, &port
->dev
, __func__
,
659 urb
->actual_length
, data
);
661 int bytes_sent
= ((__u8
*) data
)[0] +
662 ((unsigned int) ((__u8
*) data
)[1] << 8);
664 /* we should immediately resubmit the URB, before attempting
665 * to pass the data on to the tty layer. But that needs locking
666 * against re-entry an then mixed-up data because of
667 * intermixed tty_flip_buffer_push()s
670 usb_serial_debug_data(debug
, &port
->dev
, __func__
,
671 urb
->actual_length
, data
);
673 if (bytes_sent
+ 2 > urb
->actual_length
) {
674 dbg("%s - trying to read more data than available"
675 " (%d vs. %d)", __func__
,
676 bytes_sent
+2, urb
->actual_length
);
677 /* cap at implied limit */
678 bytes_sent
= urb
->actual_length
- 2;
681 tty_buffer_request_room(tty
, bytes_sent
);
682 tty_insert_flip_string(tty
, data
+ 2, bytes_sent
);
683 tty_flip_buffer_push(tty
);
685 /* again lockless, but debug info only */
686 priv
->bytes_in
+= bytes_sent
;
688 /* Continue trying to always read */
689 usb_fill_bulk_urb(port
->read_urb
, port
->serial
->dev
,
690 usb_rcvbulkpipe(port
->serial
->dev
,
691 port
->bulk_in_endpointAddress
),
692 port
->read_urb
->transfer_buffer
,
693 port
->read_urb
->transfer_buffer_length
,
694 klsi_105_read_bulk_callback
,
696 rc
= usb_submit_urb(port
->read_urb
, GFP_ATOMIC
);
698 err("%s - failed resubmitting read urb, error %d", __func__
, rc
);
699 } /* klsi_105_read_bulk_callback */
702 static void klsi_105_set_termios (struct usb_serial_port
*port
,
703 struct ktermios
*old_termios
)
705 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
706 struct tty_struct
*tty
= port
->tty
;
707 unsigned int iflag
= tty
->termios
->c_iflag
;
708 unsigned int old_iflag
= old_termios
->c_iflag
;
709 unsigned int cflag
= tty
->termios
->c_cflag
;
710 unsigned int old_cflag
= old_termios
->c_cflag
;
711 struct klsi_105_port_settings cfg
;
715 /* lock while we are modifying the settings */
716 spin_lock_irqsave (&priv
->lock
, flags
);
721 baud
= tty_get_baud_rate(tty
);
723 if( (cflag
& CBAUD
) != (old_cflag
& CBAUD
) ) {
724 /* reassert DTR and (maybe) RTS on transition from B0 */
725 if( (old_cflag
& CBAUD
) == B0
) {
726 dbg("%s: baud was B0", __func__
);
728 priv
->control_state
|= TIOCM_DTR
;
729 /* don't set RTS if using hardware flow control */
730 if (!(old_cflag
& CRTSCTS
)) {
731 priv
->control_state
|= TIOCM_RTS
;
733 mct_u232_set_modem_ctrl(serial
, priv
->control_state
);
738 case 0: /* handled below */
741 priv
->cfg
.baudrate
= kl5kusb105a_sio_b1200
;
744 priv
->cfg
.baudrate
= kl5kusb105a_sio_b2400
;
747 priv
->cfg
.baudrate
= kl5kusb105a_sio_b4800
;
750 priv
->cfg
.baudrate
= kl5kusb105a_sio_b9600
;
753 priv
->cfg
.baudrate
= kl5kusb105a_sio_b19200
;
756 priv
->cfg
.baudrate
= kl5kusb105a_sio_b38400
;
759 priv
->cfg
.baudrate
= kl5kusb105a_sio_b57600
;
762 priv
->cfg
.baudrate
= kl5kusb105a_sio_b115200
;
765 dbg("KLSI USB->Serial converter:"
766 " unsupported baudrate request, using default"
768 priv
->cfg
.baudrate
= kl5kusb105a_sio_b9600
;
772 if ((cflag
& CBAUD
) == B0
) {
773 dbg("%s: baud is B0", __func__
);
774 /* Drop RTS and DTR */
775 /* maybe this should be simulated by sending read
776 * disable and read enable messages?
780 priv
->control_state
&= ~(TIOCM_DTR
| TIOCM_RTS
);
781 mct_u232_set_modem_ctrl(serial
, priv
->control_state
);
784 tty_encode_baud_rate(tty
, baud
, baud
);
786 if ((cflag
& CSIZE
) != (old_cflag
& CSIZE
)) {
787 /* set the number of data bits */
788 switch (cflag
& CSIZE
) {
790 dbg("%s - 5 bits/byte not supported", __func__
);
791 spin_unlock_irqrestore (&priv
->lock
, flags
);
794 dbg("%s - 6 bits/byte not supported", __func__
);
795 spin_unlock_irqrestore (&priv
->lock
, flags
);
798 priv
->cfg
.databits
= kl5kusb105a_dtb_7
;
801 priv
->cfg
.databits
= kl5kusb105a_dtb_8
;
804 err("CSIZE was not CS5-CS8, using default of 8");
805 priv
->cfg
.databits
= kl5kusb105a_dtb_8
;
811 * Update line control register (LCR)
813 if ((cflag
& (PARENB
|PARODD
)) != (old_cflag
& (PARENB
|PARODD
))
814 || (cflag
& CSTOPB
) != (old_cflag
& CSTOPB
) ) {
816 /* Not currently supported */
817 tty
->termios
->c_cflag
&= ~(PARENB
|PARODD
|CSTOPB
);
823 priv
->last_lcr
|= (cflag
& PARODD
) ?
824 MCT_U232_PARITY_ODD
: MCT_U232_PARITY_EVEN
;
826 priv
->last_lcr
|= MCT_U232_PARITY_NONE
;
828 /* set the number of stop bits */
829 priv
->last_lcr
|= (cflag
& CSTOPB
) ?
830 MCT_U232_STOP_BITS_2
: MCT_U232_STOP_BITS_1
;
832 mct_u232_set_line_ctrl(serial
, priv
->last_lcr
);
838 * Set flow control: well, I do not really now how to handle DTR/RTS.
839 * Just do what we have seen with SniffUSB on Win98.
841 if( (iflag
& IXOFF
) != (old_iflag
& IXOFF
)
842 || (iflag
& IXON
) != (old_iflag
& IXON
)
843 || (cflag
& CRTSCTS
) != (old_cflag
& CRTSCTS
) ) {
845 /* Not currently supported */
846 tty
->termios
->c_cflag
&= ~CRTSCTS
;
847 /* Drop DTR/RTS if no flow control otherwise assert */
849 if ((iflag
& IXOFF
) || (iflag
& IXON
) || (cflag
& CRTSCTS
) )
850 priv
->control_state
|= TIOCM_DTR
| TIOCM_RTS
;
852 priv
->control_state
&= ~(TIOCM_DTR
| TIOCM_RTS
);
853 mct_u232_set_modem_ctrl(serial
, priv
->control_state
);
857 memcpy (&cfg
, &priv
->cfg
, sizeof(cfg
));
858 spin_unlock_irqrestore (&priv
->lock
, flags
);
860 /* now commit changes to device */
861 klsi_105_chg_port_settings(port
, &cfg
);
862 } /* klsi_105_set_termios */
866 static void mct_u232_break_ctl( struct usb_serial_port
*port
, int break_state
)
868 struct usb_serial
*serial
= port
->serial
;
869 struct mct_u232_private
*priv
= (struct mct_u232_private
*)port
->private;
870 unsigned char lcr
= priv
->last_lcr
;
872 dbg("%sstate=%d", __func__
, break_state
);
875 lcr
|= MCT_U232_SET_BREAK
;
877 mct_u232_set_line_ctrl(serial
, lcr
);
878 } /* mct_u232_break_ctl */
881 static int klsi_105_tiocmget (struct usb_serial_port
*port
, struct file
*file
)
883 struct klsi_105_private
*priv
= usb_get_serial_port_data(port
);
886 unsigned long line_state
;
887 dbg("%s - request, just guessing", __func__
);
889 rc
= klsi_105_get_line_state(port
, &line_state
);
891 err("Reading line control failed (error = %d)", rc
);
892 /* better return value? EAGAIN? */
896 spin_lock_irqsave (&priv
->lock
, flags
);
897 priv
->line_state
= line_state
;
898 spin_unlock_irqrestore (&priv
->lock
, flags
);
899 dbg("%s - read line state 0x%lx", __func__
, line_state
);
900 return (int)line_state
;
903 static int klsi_105_tiocmset (struct usb_serial_port
*port
, struct file
*file
,
904 unsigned int set
, unsigned int clear
)
906 int retval
= -EINVAL
;
910 /* if this ever gets implemented, it should be done something like this:
911 struct usb_serial *serial = port->serial;
912 struct klsi_105_private *priv = usb_get_serial_port_data(port);
916 spin_lock_irqsave (&priv->lock, flags);
918 priv->control_state |= TIOCM_RTS;
920 priv->control_state |= TIOCM_DTR;
921 if (clear & TIOCM_RTS)
922 priv->control_state &= ~TIOCM_RTS;
923 if (clear & TIOCM_DTR)
924 priv->control_state &= ~TIOCM_DTR;
925 control = priv->control_state;
926 spin_unlock_irqrestore (&priv->lock, flags);
927 retval = mct_u232_set_modem_ctrl(serial, control);
932 static void klsi_105_throttle (struct usb_serial_port
*port
)
934 dbg("%s - port %d", __func__
, port
->number
);
935 usb_kill_urb(port
->read_urb
);
938 static void klsi_105_unthrottle (struct usb_serial_port
*port
)
942 dbg("%s - port %d", __func__
, port
->number
);
944 port
->read_urb
->dev
= port
->serial
->dev
;
945 result
= usb_submit_urb(port
->read_urb
, GFP_ATOMIC
);
947 err("%s - failed submitting read urb, error %d", __func__
,
953 static int __init
klsi_105_init (void)
956 retval
= usb_serial_register(&kl5kusb105d_device
);
958 goto failed_usb_serial_register
;
959 retval
= usb_register(&kl5kusb105d_driver
);
961 goto failed_usb_register
;
963 info(DRIVER_DESC
" " DRIVER_VERSION
);
966 usb_serial_deregister(&kl5kusb105d_device
);
967 failed_usb_serial_register
:
972 static void __exit
klsi_105_exit (void)
974 usb_deregister (&kl5kusb105d_driver
);
975 usb_serial_deregister (&kl5kusb105d_device
);
979 module_init (klsi_105_init
);
980 module_exit (klsi_105_exit
);
982 MODULE_AUTHOR( DRIVER_AUTHOR
);
983 MODULE_DESCRIPTION( DRIVER_DESC
);
984 MODULE_LICENSE("GPL");
987 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
988 MODULE_PARM_DESC(debug
, "enable extensive debugging messages");
990 /* vim: set sts=8 ts=8 sw=8: */