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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * KLSI KL5KUSB105 chip RS232 converter driver
3 *
4 * Copyright (C) 2001 Utz-Uwe Haus <haus@uuhaus.de>
5 *
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.
10 *
11 * All information about the device was acquired using SniffUSB ans snoopUSB
12 * on Windows98.
13 * It was written out of frustration with the PalmConnect USB Serial adapter
14 * sold by Palm Inc.
15 * Neither Palm, nor their contractor (MCCI) or their supplier (KLSI) provided
16 * information that was not already available.
17 *
Alan Cox0c265f42008-07-22 11:14:00 +010018 * It seems that KLSI bought some silicon-design information from ScanLogic,
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 * 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
Alan Cox0c265f42008-07-22 11:14:00 +010022 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 * on the protocol used (or find errors in my reverse-engineered stuff), please
25 * let me know.
26 *
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!
30 */
31
32/* TODO:
33 * check modem line signals
34 * implement handshaking or decide that we do not support it
35 */
36
37/* History:
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
42 *
Alan Cox0c265f42008-07-22 11:14:00 +010043 * The driver skeleton is mainly based on mct_u232.c and various other
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 * pieces of code shamelessly copied from the drivers/usb/serial/ directory.
45 */
46
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#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>
Alan Cox0c265f42008-07-22 11:14:00 +010056#include <linux/uaccess.h>
Al Virofd05e722008-04-28 07:00:16 +010057#include <asm/unaligned.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#include <linux/usb.h>
Greg Kroah-Hartmana9698882006-07-11 21:22:58 -070059#include <linux/usb/serial.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#include "kl5kusb105.h"
61
62static int debug;
63
64/*
65 * Version Information
66 */
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"
70
71
72/*
73 * Function prototypes
74 */
Alan Cox0c265f42008-07-22 11:14:00 +010075static int klsi_105_startup(struct usb_serial *serial);
76static void klsi_105_shutdown(struct usb_serial *serial);
77static int klsi_105_open(struct tty_struct *tty,
78 struct usb_serial_port *port, struct file *filp);
79static void klsi_105_close(struct tty_struct *tty,
80 struct usb_serial_port *port, struct file *filp);
81static int klsi_105_write(struct tty_struct *tty,
82 struct usb_serial_port *port, const unsigned char *buf, int count);
83static void klsi_105_write_bulk_callback(struct urb *urb);
84static int klsi_105_chars_in_buffer(struct tty_struct *tty);
85static int klsi_105_write_room(struct tty_struct *tty);
86static void klsi_105_read_bulk_callback(struct urb *urb);
87static void klsi_105_set_termios(struct tty_struct *tty,
88 struct usb_serial_port *port, struct ktermios *old);
89static void klsi_105_throttle(struct tty_struct *tty);
90static void klsi_105_unthrottle(struct tty_struct *tty);
91static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file);
92static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file,
93 unsigned int set, unsigned int clear);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95/*
96 * All of the device info needed for the KLSI converters.
97 */
98static struct usb_device_id id_table [] = {
99 { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
100 { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
101 { } /* Terminating entry */
102};
103
Alan Cox0c265f42008-07-22 11:14:00 +0100104MODULE_DEVICE_TABLE(usb, id_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
106static struct usb_driver kl5kusb105d_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 .name = "kl5kusb105d",
108 .probe = usb_serial_probe,
109 .disconnect = usb_serial_disconnect,
110 .id_table = id_table,
Greg Kroah-Hartmanba9dc652005-11-16 13:41:28 -0800111 .no_dynamic_id = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112};
113
Greg Kroah-Hartmanea653702005-06-20 21:15:16 -0700114static struct usb_serial_driver kl5kusb105d_device = {
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -0700115 .driver = {
116 .owner = THIS_MODULE,
Greg Kroah-Hartman269bda12005-06-20 21:15:16 -0700117 .name = "kl5kusb105d",
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -0700118 },
Greg Kroah-Hartman269bda12005-06-20 21:15:16 -0700119 .description = "KL5KUSB105D / PalmConnect",
Johannes Hölzld9b1b782006-12-17 21:50:24 +0100120 .usb_driver = &kl5kusb105d_driver,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 .id_table = id_table,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 .num_ports = 1,
123 .open = klsi_105_open,
124 .close = klsi_105_close,
125 .write = klsi_105_write,
126 .write_bulk_callback = klsi_105_write_bulk_callback,
127 .chars_in_buffer = klsi_105_chars_in_buffer,
128 .write_room = klsi_105_write_room,
Alan Cox0c265f42008-07-22 11:14:00 +0100129 .read_bulk_callback = klsi_105_read_bulk_callback,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 .set_termios = klsi_105_set_termios,
131 /*.break_ctl = klsi_105_break_ctl,*/
132 .tiocmget = klsi_105_tiocmget,
133 .tiocmset = klsi_105_tiocmset,
134 .attach = klsi_105_startup,
135 .shutdown = klsi_105_shutdown,
136 .throttle = klsi_105_throttle,
137 .unthrottle = klsi_105_unthrottle,
138};
139
140struct klsi_105_port_settings {
141 __u8 pktlen; /* always 5, it seems */
142 __u8 baudrate;
143 __u8 databits;
144 __u8 unknown1;
145 __u8 unknown2;
146} __attribute__ ((packed));
147
148/* we implement a pool of NUM_URBS urbs per usb_serial */
149#define NUM_URBS 1
150#define URB_TRANSFER_BUFFER_SIZE 64
151struct klsi_105_private {
152 struct klsi_105_port_settings cfg;
Alan Cox606d0992006-12-08 02:38:45 -0800153 struct ktermios termios;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 unsigned long line_state; /* modem line settings */
155 /* write pool */
Alan Cox0c265f42008-07-22 11:14:00 +0100156 struct urb *write_urb_pool[NUM_URBS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 spinlock_t lock;
158 unsigned long bytes_in;
159 unsigned long bytes_out;
160};
161
162
163/*
164 * Handle vendor specific USB requests
165 */
166
167
168#define KLSI_TIMEOUT 5000 /* default urb timeout */
169
170static int klsi_105_chg_port_settings(struct usb_serial_port *port,
171 struct klsi_105_port_settings *settings)
172{
173 int rc;
174
Alan Cox0c265f42008-07-22 11:14:00 +0100175 rc = usb_control_msg(port->serial->dev,
176 usb_sndctrlpipe(port->serial->dev, 0),
177 KL5KUSB105A_SIO_SET_DATA,
178 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE,
179 0, /* value */
180 0, /* index */
181 settings,
182 sizeof(struct klsi_105_port_settings),
183 KLSI_TIMEOUT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 if (rc < 0)
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700185 dev_err(&port->dev,
186 "Change port settings failed (error = %d)\n", rc);
Greg Kroah-Hartmanc197a8d2008-08-18 13:21:04 -0700187 dev_info(&port->serial->dev->dev,
188 "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n",
189 settings->pktlen, settings->baudrate, settings->databits,
190 settings->unknown1, settings->unknown2);
Alan Cox0c265f42008-07-22 11:14:00 +0100191 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192} /* klsi_105_chg_port_settings */
193
194/* translate a 16-bit status value from the device to linux's TIO bits */
195static unsigned long klsi_105_status2linestate(const __u16 status)
196{
197 unsigned long res = 0;
198
199 res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0)
200 | ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0)
201 ;
202
203 return res;
204}
Alan Cox0c265f42008-07-22 11:14:00 +0100205/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 * Read line control via vendor command and return result through
Alan Cox0c265f42008-07-22 11:14:00 +0100207 * *line_state_p
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 */
209/* It seems that the status buffer has always only 2 bytes length */
210#define KLSI_STATUSBUF_LEN 2
211static int klsi_105_get_line_state(struct usb_serial_port *port,
212 unsigned long *line_state_p)
213{
214 int rc;
Alan Cox0c265f42008-07-22 11:14:00 +0100215 __u8 status_buf[KLSI_STATUSBUF_LEN] = { -1, -1};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 __u16 status;
217
Greg Kroah-Hartmanc197a8d2008-08-18 13:21:04 -0700218 dev_info(&port->serial->dev->dev, "sending SIO Poll request\n");
Alan Cox0c265f42008-07-22 11:14:00 +0100219 rc = usb_control_msg(port->serial->dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 usb_rcvctrlpipe(port->serial->dev, 0),
221 KL5KUSB105A_SIO_POLL,
Alan Cox0c265f42008-07-22 11:14:00 +0100222 USB_TYPE_VENDOR | USB_DIR_IN,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 0, /* value */
224 0, /* index */
225 status_buf, KLSI_STATUSBUF_LEN,
226 10000
227 );
228 if (rc < 0)
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700229 dev_err(&port->dev, "Reading line status failed (error = %d)\n",
230 rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 else {
Harvey Harrisonbd2c7842008-05-01 20:52:57 -0700232 status = get_unaligned_le16(status_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Greg Kroah-Hartmanc197a8d2008-08-18 13:21:04 -0700234 dev_info(&port->serial->dev->dev, "read status %x %x",
235 status_buf[0], status_buf[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
237 *line_state_p = klsi_105_status2linestate(status);
238 }
Alan Cox0c265f42008-07-22 11:14:00 +0100239 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240}
241
242
243/*
244 * Driver's tty interface functions
245 */
246
Alan Cox0c265f42008-07-22 11:14:00 +0100247static int klsi_105_startup(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248{
249 struct klsi_105_private *priv;
Oliver Neukum9306fff2007-03-29 11:23:54 +0200250 int i, j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
252 /* check if we support the product id (see keyspan.c)
253 * FIXME
254 */
255
256 /* allocate the private data structure */
Alan Cox0c265f42008-07-22 11:14:00 +0100257 for (i = 0; i < serial->num_ports; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 priv = kmalloc(sizeof(struct klsi_105_private),
259 GFP_KERNEL);
260 if (!priv) {
Harvey Harrison441b62c2008-03-03 16:08:34 -0800261 dbg("%skmalloc for klsi_105_private failed.", __func__);
Oliver Neukum9306fff2007-03-29 11:23:54 +0200262 i--;
263 goto err_cleanup;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 }
265 /* set initial values for control structures */
266 priv->cfg.pktlen = 5;
267 priv->cfg.baudrate = kl5kusb105a_sio_b9600;
268 priv->cfg.databits = kl5kusb105a_dtb_8;
269 priv->cfg.unknown1 = 0;
270 priv->cfg.unknown2 = 1;
271
272 priv->line_state = 0;
273
274 priv->bytes_in = 0;
275 priv->bytes_out = 0;
276 usb_set_serial_port_data(serial->port[i], priv);
277
Alan Cox0c265f42008-07-22 11:14:00 +0100278 spin_lock_init(&priv->lock);
279 for (j = 0; j < NUM_URBS; j++) {
280 struct urb *urb = usb_alloc_urb(0, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
282 priv->write_urb_pool[j] = urb;
283 if (urb == NULL) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700284 dev_err(&serial->dev->dev, "No more urbs???\n");
Oliver Neukum9306fff2007-03-29 11:23:54 +0200285 goto err_cleanup;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 }
287
Alan Cox0c265f42008-07-22 11:14:00 +0100288 urb->transfer_buffer =
289 kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 if (!urb->transfer_buffer) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700291 dev_err(&serial->dev->dev,
292 "%s - out of memory for urb buffers.\n",
293 __func__);
Oliver Neukum9306fff2007-03-29 11:23:54 +0200294 goto err_cleanup;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 }
296 }
297
298 /* priv->termios is left uninitalized until port opening */
299 init_waitqueue_head(&serial->port[i]->write_wait);
300 }
Alan Cox0c265f42008-07-22 11:14:00 +0100301
Oliver Neukum9306fff2007-03-29 11:23:54 +0200302 return 0;
303
304err_cleanup:
305 for (; i >= 0; i--) {
306 priv = usb_get_serial_port_data(serial->port[i]);
Alan Cox0c265f42008-07-22 11:14:00 +0100307 for (j = 0; j < NUM_URBS; j++) {
Oliver Neukum9306fff2007-03-29 11:23:54 +0200308 if (priv->write_urb_pool[j]) {
309 kfree(priv->write_urb_pool[j]->transfer_buffer);
310 usb_free_urb(priv->write_urb_pool[j]);
311 }
312 }
313 usb_set_serial_port_data(serial->port[i], NULL);
314 }
315 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316} /* klsi_105_startup */
317
318
Alan Cox0c265f42008-07-22 11:14:00 +0100319static void klsi_105_shutdown(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320{
321 int i;
Alan Cox0c265f42008-07-22 11:14:00 +0100322
Harvey Harrison441b62c2008-03-03 16:08:34 -0800323 dbg("%s", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
325 /* stop reads and writes on all ports */
Alan Cox0c265f42008-07-22 11:14:00 +0100326 for (i = 0; i < serial->num_ports; ++i) {
327 struct klsi_105_private *priv =
328 usb_get_serial_port_data(serial->port[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 unsigned long flags;
330
331 if (priv) {
332 /* kill our write urb pool */
333 int j;
334 struct urb **write_urbs = priv->write_urb_pool;
Alan Cox0c265f42008-07-22 11:14:00 +0100335 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
337 for (j = 0; j < NUM_URBS; j++) {
338 if (write_urbs[j]) {
339 /* FIXME - uncomment the following
340 * usb_kill_urb call when the host
341 * controllers get fixed to set
342 * urb->dev = NULL after the urb is
343 * finished. Otherwise this call
344 * oopses. */
345 /* usb_kill_urb(write_urbs[j]); */
Jesper Juhl1bc3c9e2005-04-18 17:39:34 -0700346 kfree(write_urbs[j]->transfer_buffer);
Alan Cox0c265f42008-07-22 11:14:00 +0100347 usb_free_urb(write_urbs[j]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 }
349 }
Alan Cox0c265f42008-07-22 11:14:00 +0100350 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 kfree(priv);
352 usb_set_serial_port_data(serial->port[i], NULL);
353 }
354 }
355} /* klsi_105_shutdown */
356
Alan Cox95da3102008-07-22 11:09:07 +0100357static int klsi_105_open(struct tty_struct *tty,
358 struct usb_serial_port *port, struct file *filp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359{
360 struct klsi_105_private *priv = usb_get_serial_port_data(port);
361 int retval = 0;
362 int rc;
363 int i;
364 unsigned long line_state;
365 struct klsi_105_port_settings cfg;
366 unsigned long flags;
367
Harvey Harrison441b62c2008-03-03 16:08:34 -0800368 dbg("%s port %d", __func__, port->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
370 /* force low_latency on so that our tty_push actually forces
371 * the data through
Alan Cox95da3102008-07-22 11:09:07 +0100372 * tty->low_latency = 1; */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373
374 /* Do a defined restart:
375 * Set up sane default baud rate and send the 'READ_ON'
Alan Cox0c265f42008-07-22 11:14:00 +0100376 * vendor command.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 * FIXME: set modem line control (how?)
378 * Then read the modem line control and store values in
379 * priv->line_state.
380 */
381 cfg.pktlen = 5;
382 cfg.baudrate = kl5kusb105a_sio_b9600;
383 cfg.databits = kl5kusb105a_dtb_8;
384 cfg.unknown1 = 0;
385 cfg.unknown2 = 1;
386 klsi_105_chg_port_settings(port, &cfg);
Alan Cox0c265f42008-07-22 11:14:00 +0100387
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 /* set up termios structure */
Alan Cox0c265f42008-07-22 11:14:00 +0100389 spin_lock_irqsave(&priv->lock, flags);
Alan Cox95da3102008-07-22 11:09:07 +0100390 priv->termios.c_iflag = tty->termios->c_iflag;
391 priv->termios.c_oflag = tty->termios->c_oflag;
392 priv->termios.c_cflag = tty->termios->c_cflag;
393 priv->termios.c_lflag = tty->termios->c_lflag;
Alan Cox0c265f42008-07-22 11:14:00 +0100394 for (i = 0; i < NCCS; i++)
Alan Cox95da3102008-07-22 11:09:07 +0100395 priv->termios.c_cc[i] = tty->termios->c_cc[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 priv->cfg.pktlen = cfg.pktlen;
397 priv->cfg.baudrate = cfg.baudrate;
398 priv->cfg.databits = cfg.databits;
399 priv->cfg.unknown1 = cfg.unknown1;
400 priv->cfg.unknown2 = cfg.unknown2;
Alan Cox0c265f42008-07-22 11:14:00 +0100401 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
403 /* READ_ON and urb submission */
Alan Cox0c265f42008-07-22 11:14:00 +0100404 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 usb_rcvbulkpipe(port->serial->dev,
406 port->bulk_in_endpointAddress),
407 port->read_urb->transfer_buffer,
408 port->read_urb->transfer_buffer_length,
409 klsi_105_read_bulk_callback,
410 port);
411
412 rc = usb_submit_urb(port->read_urb, GFP_KERNEL);
413 if (rc) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700414 dev_err(&port->dev, "%s - failed submitting read urb, "
415 "error %d\n", __func__, rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 retval = rc;
417 goto exit;
418 }
419
420 rc = usb_control_msg(port->serial->dev,
Alan Cox0c265f42008-07-22 11:14:00 +0100421 usb_sndctrlpipe(port->serial->dev, 0),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 KL5KUSB105A_SIO_CONFIGURE,
423 USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE,
424 KL5KUSB105A_SIO_CONFIGURE_READ_ON,
425 0, /* index */
426 NULL,
427 0,
428 KLSI_TIMEOUT);
429 if (rc < 0) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700430 dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 retval = rc;
Alan Cox0c265f42008-07-22 11:14:00 +0100432 } else
Harvey Harrison441b62c2008-03-03 16:08:34 -0800433 dbg("%s - enabled reading", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434
435 rc = klsi_105_get_line_state(port, &line_state);
436 if (rc >= 0) {
Alan Cox0c265f42008-07-22 11:14:00 +0100437 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 priv->line_state = line_state;
Alan Cox0c265f42008-07-22 11:14:00 +0100439 spin_unlock_irqrestore(&priv->lock, flags);
Harvey Harrison441b62c2008-03-03 16:08:34 -0800440 dbg("%s - read line state 0x%lx", __func__, line_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 retval = 0;
442 } else
443 retval = rc;
444
445exit:
446 return retval;
447} /* klsi_105_open */
448
449
Alan Cox95da3102008-07-22 11:09:07 +0100450static void klsi_105_close(struct tty_struct *tty,
451 struct usb_serial_port *port, struct file *filp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452{
453 struct klsi_105_private *priv = usb_get_serial_port_data(port);
454 int rc;
455
Harvey Harrison441b62c2008-03-03 16:08:34 -0800456 dbg("%s port %d", __func__, port->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457
Oliver Neukum3edbc982008-01-22 12:47:15 +0100458 mutex_lock(&port->serial->disc_mutex);
459 if (!port->serial->disconnected) {
460 /* send READ_OFF */
Alan Cox0c265f42008-07-22 11:14:00 +0100461 rc = usb_control_msg(port->serial->dev,
462 usb_sndctrlpipe(port->serial->dev, 0),
463 KL5KUSB105A_SIO_CONFIGURE,
464 USB_TYPE_VENDOR | USB_DIR_OUT,
465 KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
466 0, /* index */
467 NULL, 0,
468 KLSI_TIMEOUT);
Oliver Neukum3edbc982008-01-22 12:47:15 +0100469 if (rc < 0)
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700470 dev_err(&port->dev,
471 "Disabling read failed (error = %d)\n", rc);
Oliver Neukum3edbc982008-01-22 12:47:15 +0100472 }
473 mutex_unlock(&port->serial->disc_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474
475 /* shutdown our bulk reads and writes */
476 usb_kill_urb(port->write_urb);
477 usb_kill_urb(port->read_urb);
478 /* unlink our write pool */
479 /* FIXME */
480 /* wgg - do I need this? I think so. */
481 usb_kill_urb(port->interrupt_in_urb);
Greg Kroah-Hartmanc197a8d2008-08-18 13:21:04 -0700482 dev_info(&port->serial->dev->dev,
483 "port stats: %ld bytes in, %ld bytes out\n",
484 priv->bytes_in, priv->bytes_out);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485} /* klsi_105_close */
486
487
488/* We need to write a complete 64-byte data block and encode the
Alan Cox0c265f42008-07-22 11:14:00 +0100489 * number actually sent in the first double-byte, LSB-order. That
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 * leaves at most 62 bytes of payload.
491 */
492#define KLSI_105_DATA_OFFSET 2 /* in the bulk urb data block */
493
494
Alan Cox95da3102008-07-22 11:09:07 +0100495static int klsi_105_write(struct tty_struct *tty,
496 struct usb_serial_port *port, const unsigned char *buf, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497{
498 struct klsi_105_private *priv = usb_get_serial_port_data(port);
499 int result, size;
Alan Cox0c265f42008-07-22 11:14:00 +0100500 int bytes_sent = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Harvey Harrison441b62c2008-03-03 16:08:34 -0800502 dbg("%s - port %d", __func__, port->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
504 while (count > 0) {
505 /* try to find a free urb (write 0 bytes if none) */
506 struct urb *urb = NULL;
507 unsigned long flags;
508 int i;
Alan Cox0c265f42008-07-22 11:14:00 +0100509 /* since the pool is per-port we might not need
510 the spin lock !? */
511 spin_lock_irqsave(&priv->lock, flags);
512 for (i = 0; i < NUM_URBS; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 if (priv->write_urb_pool[i]->status != -EINPROGRESS) {
514 urb = priv->write_urb_pool[i];
Harvey Harrison441b62c2008-03-03 16:08:34 -0800515 dbg("%s - using pool URB %d", __func__, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 break;
517 }
518 }
Alan Cox0c265f42008-07-22 11:14:00 +0100519 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520
Alan Cox0c265f42008-07-22 11:14:00 +0100521 if (urb == NULL) {
Harvey Harrison441b62c2008-03-03 16:08:34 -0800522 dbg("%s - no more free urbs", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 goto exit;
524 }
525
526 if (urb->transfer_buffer == NULL) {
Alan Cox0c265f42008-07-22 11:14:00 +0100527 urb->transfer_buffer =
528 kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 if (urb->transfer_buffer == NULL) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700530 dev_err(&port->dev,
531 "%s - no more kernel memory...\n",
532 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 goto exit;
534 }
535 }
536
Alan Cox0c265f42008-07-22 11:14:00 +0100537 size = min(count, port->bulk_out_size - KLSI_105_DATA_OFFSET);
538 size = min(size, URB_TRANSFER_BUFFER_SIZE -
539 KLSI_105_DATA_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
Alan Cox0c265f42008-07-22 11:14:00 +0100541 memcpy(urb->transfer_buffer + KLSI_105_DATA_OFFSET, buf, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542
543 /* write payload size into transfer buffer */
544 ((__u8 *)urb->transfer_buffer)[0] = (__u8) (size & 0xFF);
545 ((__u8 *)urb->transfer_buffer)[1] = (__u8) ((size & 0xFF00)>>8);
546
547 /* set up our urb */
548 usb_fill_bulk_urb(urb, port->serial->dev,
549 usb_sndbulkpipe(port->serial->dev,
550 port->bulk_out_endpointAddress),
551 urb->transfer_buffer,
552 URB_TRANSFER_BUFFER_SIZE,
553 klsi_105_write_bulk_callback,
554 port);
555
556 /* send the data out the bulk port */
557 result = usb_submit_urb(urb, GFP_ATOMIC);
558 if (result) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700559 dev_err(&port->dev,
560 "%s - failed submitting write urb, error %d\n",
561 __func__, result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 goto exit;
563 }
564 buf += size;
565 bytes_sent += size;
566 count -= size;
567 }
568exit:
569 /* lockless, but it's for debug info only... */
Alan Cox0c265f42008-07-22 11:14:00 +0100570 priv->bytes_out += bytes_sent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571
572 return bytes_sent; /* that's how much we wrote */
573} /* klsi_105_write */
574
Alan Cox0c265f42008-07-22 11:14:00 +0100575static void klsi_105_write_bulk_callback(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576{
Ming Leicdc97792008-02-24 18:41:47 +0800577 struct usb_serial_port *port = urb->context;
Greg Kroah-Hartman17c1b352007-06-15 15:44:13 -0700578 int status = urb->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
Harvey Harrison441b62c2008-03-03 16:08:34 -0800580 dbg("%s - port %d", __func__, port->number);
Greg Kroah-Hartman17c1b352007-06-15 15:44:13 -0700581
582 if (status) {
Harvey Harrison441b62c2008-03-03 16:08:34 -0800583 dbg("%s - nonzero write bulk status received: %d", __func__,
Greg Kroah-Hartman17c1b352007-06-15 15:44:13 -0700584 status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 return;
586 }
587
Pete Zaitcevcf2c7482006-05-22 21:58:49 -0700588 usb_serial_port_softint(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589} /* klsi_105_write_bulk_completion_callback */
590
591
592/* return number of characters currently in the writing process */
Alan Cox0c265f42008-07-22 11:14:00 +0100593static int klsi_105_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594{
Alan Cox95da3102008-07-22 11:09:07 +0100595 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 int chars = 0;
597 int i;
598 unsigned long flags;
599 struct klsi_105_private *priv = usb_get_serial_port_data(port);
600
Alan Cox0c265f42008-07-22 11:14:00 +0100601 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602
603 for (i = 0; i < NUM_URBS; ++i) {
Alan Cox0c265f42008-07-22 11:14:00 +0100604 if (priv->write_urb_pool[i]->status == -EINPROGRESS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 chars += URB_TRANSFER_BUFFER_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 }
607
Alan Cox0c265f42008-07-22 11:14:00 +0100608 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609
Harvey Harrison441b62c2008-03-03 16:08:34 -0800610 dbg("%s - returns %d", __func__, chars);
Alan Cox0c265f42008-07-22 11:14:00 +0100611 return chars;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612}
613
Alan Cox0c265f42008-07-22 11:14:00 +0100614static int klsi_105_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615{
Alan Cox95da3102008-07-22 11:09:07 +0100616 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 unsigned long flags;
618 int i;
619 int room = 0;
620 struct klsi_105_private *priv = usb_get_serial_port_data(port);
621
Alan Cox0c265f42008-07-22 11:14:00 +0100622 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 for (i = 0; i < NUM_URBS; ++i) {
Alan Cox0c265f42008-07-22 11:14:00 +0100624 if (priv->write_urb_pool[i]->status != -EINPROGRESS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 room += URB_TRANSFER_BUFFER_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 }
627
Alan Cox0c265f42008-07-22 11:14:00 +0100628 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Harvey Harrison441b62c2008-03-03 16:08:34 -0800630 dbg("%s - returns %d", __func__, room);
Alan Cox0c265f42008-07-22 11:14:00 +0100631 return room;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632}
633
634
635
Alan Cox0c265f42008-07-22 11:14:00 +0100636static void klsi_105_read_bulk_callback(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637{
Ming Leicdc97792008-02-24 18:41:47 +0800638 struct usb_serial_port *port = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 struct klsi_105_private *priv = usb_get_serial_port_data(port);
640 struct tty_struct *tty;
641 unsigned char *data = urb->transfer_buffer;
642 int rc;
Greg Kroah-Hartman17c1b352007-06-15 15:44:13 -0700643 int status = urb->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644
Harvey Harrison441b62c2008-03-03 16:08:34 -0800645 dbg("%s - port %d", __func__, port->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
647 /* The urb might have been killed. */
Greg Kroah-Hartman17c1b352007-06-15 15:44:13 -0700648 if (status) {
Harvey Harrison441b62c2008-03-03 16:08:34 -0800649 dbg("%s - nonzero read bulk status received: %d", __func__,
Greg Kroah-Hartman17c1b352007-06-15 15:44:13 -0700650 status);
651 return;
652 }
653
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 /* The data received is again preceded by a length double-byte in LSB-
655 * first order (see klsi_105_write() )
656 */
657 if (urb->actual_length == 0) {
658 /* empty urbs seem to happen, we ignore them */
Harvey Harrison441b62c2008-03-03 16:08:34 -0800659 /* dbg("%s - emtpy URB", __func__); */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 ;
661 } else if (urb->actual_length <= 2) {
Harvey Harrison441b62c2008-03-03 16:08:34 -0800662 dbg("%s - size %d URB not understood", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 urb->actual_length);
Harvey Harrison441b62c2008-03-03 16:08:34 -0800664 usb_serial_debug_data(debug, &port->dev, __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 urb->actual_length, data);
666 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 int bytes_sent = ((__u8 *) data)[0] +
668 ((unsigned int) ((__u8 *) data)[1] << 8);
Alan Cox4a90f092008-10-13 10:39:46 +0100669 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 /* we should immediately resubmit the URB, before attempting
671 * to pass the data on to the tty layer. But that needs locking
672 * against re-entry an then mixed-up data because of
673 * intermixed tty_flip_buffer_push()s
674 * FIXME
Alan Cox0c265f42008-07-22 11:14:00 +0100675 */
Harvey Harrison441b62c2008-03-03 16:08:34 -0800676 usb_serial_debug_data(debug, &port->dev, __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 urb->actual_length, data);
678
679 if (bytes_sent + 2 > urb->actual_length) {
680 dbg("%s - trying to read more data than available"
Harvey Harrison441b62c2008-03-03 16:08:34 -0800681 " (%d vs. %d)", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 bytes_sent+2, urb->actual_length);
683 /* cap at implied limit */
684 bytes_sent = urb->actual_length - 2;
685 }
686
Alan Cox33f0f882006-01-09 20:54:13 -0800687 tty_buffer_request_room(tty, bytes_sent);
688 tty_insert_flip_string(tty, data + 2, bytes_sent);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 tty_flip_buffer_push(tty);
Alan Cox4a90f092008-10-13 10:39:46 +0100690 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691
692 /* again lockless, but debug info only */
693 priv->bytes_in += bytes_sent;
694 }
695 /* Continue trying to always read */
Alan Cox0c265f42008-07-22 11:14:00 +0100696 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 usb_rcvbulkpipe(port->serial->dev,
698 port->bulk_in_endpointAddress),
699 port->read_urb->transfer_buffer,
700 port->read_urb->transfer_buffer_length,
701 klsi_105_read_bulk_callback,
702 port);
703 rc = usb_submit_urb(port->read_urb, GFP_ATOMIC);
704 if (rc)
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700705 dev_err(&port->dev,
706 "%s - failed resubmitting read urb, error %d\n",
707 __func__, rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708} /* klsi_105_read_bulk_callback */
709
710
Alan Cox0c265f42008-07-22 11:14:00 +0100711static void klsi_105_set_termios(struct tty_struct *tty,
712 struct usb_serial_port *port,
713 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714{
715 struct klsi_105_private *priv = usb_get_serial_port_data(port);
Alan Coxa5b6f602008-04-08 17:16:06 +0100716 unsigned int iflag = tty->termios->c_iflag;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 unsigned int old_iflag = old_termios->c_iflag;
Alan Coxa5b6f602008-04-08 17:16:06 +0100718 unsigned int cflag = tty->termios->c_cflag;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719 unsigned int old_cflag = old_termios->c_cflag;
720 struct klsi_105_port_settings cfg;
721 unsigned long flags;
Alan Coxa5b6f602008-04-08 17:16:06 +0100722 speed_t baud;
Alan Cox0c265f42008-07-22 11:14:00 +0100723
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 /* lock while we are modifying the settings */
Alan Cox0c265f42008-07-22 11:14:00 +0100725 spin_lock_irqsave(&priv->lock, flags);
726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 /*
728 * Update baud rate
729 */
Alan Coxa5b6f602008-04-08 17:16:06 +0100730 baud = tty_get_baud_rate(tty);
731
Alan Cox0c265f42008-07-22 11:14:00 +0100732 if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
733 /* reassert DTR and (maybe) RTS on transition from B0 */
734 if ((old_cflag & CBAUD) == B0) {
Harvey Harrison441b62c2008-03-03 16:08:34 -0800735 dbg("%s: baud was B0", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736#if 0
737 priv->control_state |= TIOCM_DTR;
738 /* don't set RTS if using hardware flow control */
Alan Cox0c265f42008-07-22 11:14:00 +0100739 if (!(old_cflag & CRTSCTS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 priv->control_state |= TIOCM_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 mct_u232_set_modem_ctrl(serial, priv->control_state);
742#endif
743 }
Alan Coxa5b6f602008-04-08 17:16:06 +0100744 }
Alan Cox0c265f42008-07-22 11:14:00 +0100745 switch (baud) {
746 case 0: /* handled below */
747 break;
748 case 1200:
749 priv->cfg.baudrate = kl5kusb105a_sio_b1200;
750 break;
751 case 2400:
752 priv->cfg.baudrate = kl5kusb105a_sio_b2400;
753 break;
754 case 4800:
755 priv->cfg.baudrate = kl5kusb105a_sio_b4800;
756 break;
757 case 9600:
758 priv->cfg.baudrate = kl5kusb105a_sio_b9600;
759 break;
760 case 19200:
761 priv->cfg.baudrate = kl5kusb105a_sio_b19200;
762 break;
763 case 38400:
764 priv->cfg.baudrate = kl5kusb105a_sio_b38400;
765 break;
766 case 57600:
767 priv->cfg.baudrate = kl5kusb105a_sio_b57600;
768 break;
769 case 115200:
770 priv->cfg.baudrate = kl5kusb105a_sio_b115200;
771 break;
772 default:
773 dbg("KLSI USB->Serial converter:"
774 " unsupported baudrate request, using default of 9600");
Alan Cox3f6ff6e2007-08-10 14:53:34 -0700775 priv->cfg.baudrate = kl5kusb105a_sio_b9600;
Alan Cox0c265f42008-07-22 11:14:00 +0100776 baud = 9600;
777 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 }
Alan Cox0c265f42008-07-22 11:14:00 +0100779 if ((cflag & CBAUD) == B0) {
Alan Coxa5b6f602008-04-08 17:16:06 +0100780 dbg("%s: baud is B0", __func__);
781 /* Drop RTS and DTR */
782 /* maybe this should be simulated by sending read
783 * disable and read enable messages?
784 */
785 ;
786#if 0
787 priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
Alan Cox0c265f42008-07-22 11:14:00 +0100788 mct_u232_set_modem_ctrl(serial, priv->control_state);
Alan Coxa5b6f602008-04-08 17:16:06 +0100789#endif
790 }
791 tty_encode_baud_rate(tty, baud, baud);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
793 if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
794 /* set the number of data bits */
795 switch (cflag & CSIZE) {
796 case CS5:
Harvey Harrison441b62c2008-03-03 16:08:34 -0800797 dbg("%s - 5 bits/byte not supported", __func__);
Alan Cox0c265f42008-07-22 11:14:00 +0100798 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 return ;
800 case CS6:
Harvey Harrison441b62c2008-03-03 16:08:34 -0800801 dbg("%s - 6 bits/byte not supported", __func__);
Alan Cox0c265f42008-07-22 11:14:00 +0100802 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 return ;
804 case CS7:
805 priv->cfg.databits = kl5kusb105a_dtb_7;
806 break;
807 case CS8:
808 priv->cfg.databits = kl5kusb105a_dtb_8;
809 break;
810 default:
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700811 dev_err(&port->dev,
812 "CSIZE was not CS5-CS8, using default of 8\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 priv->cfg.databits = kl5kusb105a_dtb_8;
814 break;
815 }
816 }
817
818 /*
819 * Update line control register (LCR)
820 */
821 if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))
Alan Cox0c265f42008-07-22 11:14:00 +0100822 || (cflag & CSTOPB) != (old_cflag & CSTOPB)) {
Alan Coxa5b6f602008-04-08 17:16:06 +0100823 /* Not currently supported */
824 tty->termios->c_cflag &= ~(PARENB|PARODD|CSTOPB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825#if 0
826 priv->last_lcr = 0;
827
828 /* set the parity */
829 if (cflag & PARENB)
830 priv->last_lcr |= (cflag & PARODD) ?
831 MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN;
832 else
833 priv->last_lcr |= MCT_U232_PARITY_NONE;
834
835 /* set the number of stop bits */
836 priv->last_lcr |= (cflag & CSTOPB) ?
837 MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;
838
839 mct_u232_set_line_ctrl(serial, priv->last_lcr);
840#endif
841 ;
842 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 /*
844 * Set flow control: well, I do not really now how to handle DTR/RTS.
845 * Just do what we have seen with SniffUSB on Win98.
846 */
Alan Cox0c265f42008-07-22 11:14:00 +0100847 if ((iflag & IXOFF) != (old_iflag & IXOFF)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 || (iflag & IXON) != (old_iflag & IXON)
Alan Cox0c265f42008-07-22 11:14:00 +0100849 || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
Alan Coxa5b6f602008-04-08 17:16:06 +0100850 /* Not currently supported */
851 tty->termios->c_cflag &= ~CRTSCTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 /* Drop DTR/RTS if no flow control otherwise assert */
853#if 0
Alan Cox0c265f42008-07-22 11:14:00 +0100854 if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855 priv->control_state |= TIOCM_DTR | TIOCM_RTS;
856 else
857 priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
858 mct_u232_set_modem_ctrl(serial, priv->control_state);
859#endif
860 ;
861 }
Alan Cox0c265f42008-07-22 11:14:00 +0100862 memcpy(&cfg, &priv->cfg, sizeof(cfg));
863 spin_unlock_irqrestore(&priv->lock, flags);
864
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 /* now commit changes to device */
866 klsi_105_chg_port_settings(port, &cfg);
867} /* klsi_105_set_termios */
868
869
870#if 0
Alan Cox0c265f42008-07-22 11:14:00 +0100871static void mct_u232_break_ctl(struct tty_struct *tty, int break_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872{
Alan Cox95da3102008-07-22 11:09:07 +0100873 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 struct usb_serial *serial = port->serial;
Alan Cox0c265f42008-07-22 11:14:00 +0100875 struct mct_u232_private *priv =
876 (struct mct_u232_private *)port->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 unsigned char lcr = priv->last_lcr;
878
Harvey Harrison441b62c2008-03-03 16:08:34 -0800879 dbg("%sstate=%d", __func__, break_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
Alan Cox6b447f042009-01-02 13:48:56 +0000881 /* LOCKING */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882 if (break_state)
883 lcr |= MCT_U232_SET_BREAK;
884
885 mct_u232_set_line_ctrl(serial, lcr);
886} /* mct_u232_break_ctl */
887#endif
888
Alan Cox0c265f42008-07-22 11:14:00 +0100889static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890{
Alan Cox95da3102008-07-22 11:09:07 +0100891 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 struct klsi_105_private *priv = usb_get_serial_port_data(port);
893 unsigned long flags;
894 int rc;
895 unsigned long line_state;
Harvey Harrison441b62c2008-03-03 16:08:34 -0800896 dbg("%s - request, just guessing", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
898 rc = klsi_105_get_line_state(port, &line_state);
899 if (rc < 0) {
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700900 dev_err(&port->dev,
901 "Reading line control failed (error = %d)\n", rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 /* better return value? EAGAIN? */
903 return rc;
904 }
905
Alan Cox0c265f42008-07-22 11:14:00 +0100906 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 priv->line_state = line_state;
Alan Cox0c265f42008-07-22 11:14:00 +0100908 spin_unlock_irqrestore(&priv->lock, flags);
Harvey Harrison441b62c2008-03-03 16:08:34 -0800909 dbg("%s - read line state 0x%lx", __func__, line_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 return (int)line_state;
911}
912
Alan Cox0c265f42008-07-22 11:14:00 +0100913static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file,
914 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915{
916 int retval = -EINVAL;
Alan Cox0c265f42008-07-22 11:14:00 +0100917
Harvey Harrison441b62c2008-03-03 16:08:34 -0800918 dbg("%s", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
920/* if this ever gets implemented, it should be done something like this:
921 struct usb_serial *serial = port->serial;
922 struct klsi_105_private *priv = usb_get_serial_port_data(port);
923 unsigned long flags;
924 int control;
925
926 spin_lock_irqsave (&priv->lock, flags);
927 if (set & TIOCM_RTS)
928 priv->control_state |= TIOCM_RTS;
929 if (set & TIOCM_DTR)
930 priv->control_state |= TIOCM_DTR;
931 if (clear & TIOCM_RTS)
932 priv->control_state &= ~TIOCM_RTS;
933 if (clear & TIOCM_DTR)
934 priv->control_state &= ~TIOCM_DTR;
935 control = priv->control_state;
936 spin_unlock_irqrestore (&priv->lock, flags);
937 retval = mct_u232_set_modem_ctrl(serial, control);
938*/
939 return retval;
940}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941
Alan Cox0c265f42008-07-22 11:14:00 +0100942static void klsi_105_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943{
Alan Cox95da3102008-07-22 11:09:07 +0100944 struct usb_serial_port *port = tty->driver_data;
Harvey Harrison441b62c2008-03-03 16:08:34 -0800945 dbg("%s - port %d", __func__, port->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 usb_kill_urb(port->read_urb);
947}
948
Alan Cox0c265f42008-07-22 11:14:00 +0100949static void klsi_105_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950{
Alan Cox95da3102008-07-22 11:09:07 +0100951 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 int result;
953
Harvey Harrison441b62c2008-03-03 16:08:34 -0800954 dbg("%s - port %d", __func__, port->number);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
956 port->read_urb->dev = port->serial->dev;
957 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
958 if (result)
Greg Kroah-Hartman194343d2008-08-20 16:56:34 -0700959 dev_err(&port->dev,
960 "%s - failed submitting read urb, error %d\n",
961 __func__, result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962}
963
964
965
Alan Cox0c265f42008-07-22 11:14:00 +0100966static int __init klsi_105_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967{
968 int retval;
969 retval = usb_serial_register(&kl5kusb105d_device);
970 if (retval)
971 goto failed_usb_serial_register;
972 retval = usb_register(&kl5kusb105d_driver);
973 if (retval)
974 goto failed_usb_register;
975
Greg Kroah-Hartmanc197a8d2008-08-18 13:21:04 -0700976 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
977 DRIVER_DESC "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 return 0;
979failed_usb_register:
980 usb_serial_deregister(&kl5kusb105d_device);
981failed_usb_serial_register:
982 return retval;
983}
984
985
Alan Cox0c265f42008-07-22 11:14:00 +0100986static void __exit klsi_105_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987{
Alan Cox0c265f42008-07-22 11:14:00 +0100988 usb_deregister(&kl5kusb105d_driver);
989 usb_serial_deregister(&kl5kusb105d_device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990}
991
992
Alan Cox0c265f42008-07-22 11:14:00 +0100993module_init(klsi_105_init);
994module_exit(klsi_105_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995
Alan Cox0c265f42008-07-22 11:14:00 +0100996MODULE_AUTHOR(DRIVER_AUTHOR);
997MODULE_DESCRIPTION(DRIVER_DESC);
998MODULE_LICENSE("GPL");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999
1000
1001module_param(debug, bool, S_IRUGO | S_IWUSR);
1002MODULE_PARM_DESC(debug, "enable extensive debugging messages");
1003
1004/* vim: set sts=8 ts=8 sw=8: */