Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * KLSI KL5KUSB105 chip RS232 converter driver | |
3 | * | |
60b3013c | 4 | * Copyright (C) 2010 Johan Hovold <jhovold@gmail.com> |
1da177e4 LT |
5 | * Copyright (C) 2001 Utz-Uwe Haus <haus@uuhaus.de> |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * All information about the device was acquired using SniffUSB ans snoopUSB | |
13 | * on Windows98. | |
14 | * It was written out of frustration with the PalmConnect USB Serial adapter | |
15 | * sold by Palm Inc. | |
16 | * Neither Palm, nor their contractor (MCCI) or their supplier (KLSI) provided | |
17 | * information that was not already available. | |
18 | * | |
0c265f4e | 19 | * It seems that KLSI bought some silicon-design information from ScanLogic, |
1da177e4 LT |
20 | * whose SL11R processor is at the core of the KL5KUSB chipset from KLSI. |
21 | * KLSI has firmware available for their devices; it is probable that the | |
22 | * firmware differs from that used by KLSI in their products. If you have an | |
0c265f4e AC |
23 | * original KLSI device and can provide some information on it, I would be |
24 | * most interested in adding support for it here. If you have any information | |
1da177e4 LT |
25 | * on the protocol used (or find errors in my reverse-engineered stuff), please |
26 | * let me know. | |
27 | * | |
28 | * The code was only tested with a PalmConnect USB adapter; if you | |
29 | * are adventurous, try it with any KLSI-based device and let me know how it | |
30 | * breaks so that I can fix it! | |
31 | */ | |
32 | ||
33 | /* TODO: | |
34 | * check modem line signals | |
35 | * implement handshaking or decide that we do not support it | |
36 | */ | |
37 | ||
1da177e4 LT |
38 | #include <linux/kernel.h> |
39 | #include <linux/errno.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/tty.h> | |
43 | #include <linux/tty_driver.h> | |
44 | #include <linux/tty_flip.h> | |
45 | #include <linux/module.h> | |
0c265f4e | 46 | #include <linux/uaccess.h> |
fd05e720 | 47 | #include <asm/unaligned.h> |
1da177e4 | 48 | #include <linux/usb.h> |
a969888c | 49 | #include <linux/usb/serial.h> |
1da177e4 LT |
50 | #include "kl5kusb105.h" |
51 | ||
90ab5ee9 | 52 | static bool debug; |
1da177e4 LT |
53 | |
54 | /* | |
55 | * Version Information | |
56 | */ | |
60b3013c JH |
57 | #define DRIVER_VERSION "v0.4" |
58 | #define DRIVER_AUTHOR "Utz-Uwe Haus <haus@uuhaus.de>, Johan Hovold <jhovold@gmail.com>" | |
1da177e4 LT |
59 | #define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver" |
60 | ||
61 | ||
62 | /* | |
63 | * Function prototypes | |
64 | */ | |
0c265f4e | 65 | static int klsi_105_startup(struct usb_serial *serial); |
f9c99bb8 | 66 | static void klsi_105_release(struct usb_serial *serial); |
a509a7e4 | 67 | static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 68 | static void klsi_105_close(struct usb_serial_port *port); |
0c265f4e AC |
69 | static void klsi_105_set_termios(struct tty_struct *tty, |
70 | struct usb_serial_port *port, struct ktermios *old); | |
60b33c13 | 71 | static int klsi_105_tiocmget(struct tty_struct *tty); |
20b9d177 | 72 | static int klsi_105_tiocmset(struct tty_struct *tty, |
0c265f4e | 73 | unsigned int set, unsigned int clear); |
60b3013c JH |
74 | static void klsi_105_process_read_urb(struct urb *urb); |
75 | static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, | |
76 | void *dest, size_t size); | |
1da177e4 LT |
77 | |
78 | /* | |
79 | * All of the device info needed for the KLSI converters. | |
80 | */ | |
7d40d7e8 | 81 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
82 | { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) }, |
83 | { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) }, | |
84 | { } /* Terminating entry */ | |
85 | }; | |
86 | ||
0c265f4e | 87 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 88 | |
ea65370d | 89 | static struct usb_serial_driver kl5kusb105d_device = { |
18fcac35 GKH |
90 | .driver = { |
91 | .owner = THIS_MODULE, | |
269bda1c | 92 | .name = "kl5kusb105d", |
18fcac35 | 93 | }, |
ff8c195f | 94 | .description = "KL5KUSB105D / PalmConnect", |
ff8c195f JH |
95 | .id_table = id_table, |
96 | .num_ports = 1, | |
60b3013c | 97 | .bulk_out_size = 64, |
ff8c195f JH |
98 | .open = klsi_105_open, |
99 | .close = klsi_105_close, | |
ff8c195f JH |
100 | .set_termios = klsi_105_set_termios, |
101 | /*.break_ctl = klsi_105_break_ctl,*/ | |
102 | .tiocmget = klsi_105_tiocmget, | |
103 | .tiocmset = klsi_105_tiocmset, | |
104 | .attach = klsi_105_startup, | |
ff8c195f | 105 | .release = klsi_105_release, |
60b3013c JH |
106 | .throttle = usb_serial_generic_throttle, |
107 | .unthrottle = usb_serial_generic_unthrottle, | |
108 | .process_read_urb = klsi_105_process_read_urb, | |
109 | .prepare_write_buffer = klsi_105_prepare_write_buffer, | |
1da177e4 LT |
110 | }; |
111 | ||
4d2a7aff AS |
112 | static struct usb_serial_driver * const serial_drivers[] = { |
113 | &kl5kusb105d_device, NULL | |
114 | }; | |
115 | ||
1da177e4 LT |
116 | struct klsi_105_port_settings { |
117 | __u8 pktlen; /* always 5, it seems */ | |
118 | __u8 baudrate; | |
119 | __u8 databits; | |
120 | __u8 unknown1; | |
121 | __u8 unknown2; | |
122 | } __attribute__ ((packed)); | |
123 | ||
1da177e4 LT |
124 | struct klsi_105_private { |
125 | struct klsi_105_port_settings cfg; | |
606d099c | 126 | struct ktermios termios; |
1da177e4 | 127 | unsigned long line_state; /* modem line settings */ |
1da177e4 | 128 | spinlock_t lock; |
1da177e4 LT |
129 | }; |
130 | ||
131 | ||
132 | /* | |
133 | * Handle vendor specific USB requests | |
134 | */ | |
135 | ||
136 | ||
137 | #define KLSI_TIMEOUT 5000 /* default urb timeout */ | |
138 | ||
139 | static int klsi_105_chg_port_settings(struct usb_serial_port *port, | |
140 | struct klsi_105_port_settings *settings) | |
141 | { | |
142 | int rc; | |
143 | ||
0c265f4e AC |
144 | rc = usb_control_msg(port->serial->dev, |
145 | usb_sndctrlpipe(port->serial->dev, 0), | |
146 | KL5KUSB105A_SIO_SET_DATA, | |
147 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE, | |
148 | 0, /* value */ | |
149 | 0, /* index */ | |
150 | settings, | |
151 | sizeof(struct klsi_105_port_settings), | |
152 | KLSI_TIMEOUT); | |
1da177e4 | 153 | if (rc < 0) |
194343d9 GKH |
154 | dev_err(&port->dev, |
155 | "Change port settings failed (error = %d)\n", rc); | |
c197a8db GKH |
156 | dev_info(&port->serial->dev->dev, |
157 | "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n", | |
158 | settings->pktlen, settings->baudrate, settings->databits, | |
159 | settings->unknown1, settings->unknown2); | |
0c265f4e | 160 | return rc; |
ff8c195f | 161 | } |
1da177e4 LT |
162 | |
163 | /* translate a 16-bit status value from the device to linux's TIO bits */ | |
164 | static unsigned long klsi_105_status2linestate(const __u16 status) | |
165 | { | |
166 | unsigned long res = 0; | |
167 | ||
168 | res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0) | |
169 | | ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0) | |
170 | ; | |
171 | ||
172 | return res; | |
173 | } | |
ff8c195f | 174 | |
0c265f4e | 175 | /* |
1da177e4 | 176 | * Read line control via vendor command and return result through |
0c265f4e | 177 | * *line_state_p |
1da177e4 LT |
178 | */ |
179 | /* It seems that the status buffer has always only 2 bytes length */ | |
180 | #define KLSI_STATUSBUF_LEN 2 | |
181 | static int klsi_105_get_line_state(struct usb_serial_port *port, | |
182 | unsigned long *line_state_p) | |
183 | { | |
184 | int rc; | |
abf492e7 | 185 | u8 *status_buf; |
1da177e4 LT |
186 | __u16 status; |
187 | ||
c197a8db | 188 | dev_info(&port->serial->dev->dev, "sending SIO Poll request\n"); |
abf492e7 JH |
189 | |
190 | status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL); | |
191 | if (!status_buf) { | |
192 | dev_err(&port->dev, "%s - out of memory for status buffer.\n", | |
193 | __func__); | |
194 | return -ENOMEM; | |
195 | } | |
196 | status_buf[0] = 0xff; | |
197 | status_buf[1] = 0xff; | |
0c265f4e | 198 | rc = usb_control_msg(port->serial->dev, |
1da177e4 LT |
199 | usb_rcvctrlpipe(port->serial->dev, 0), |
200 | KL5KUSB105A_SIO_POLL, | |
0c265f4e | 201 | USB_TYPE_VENDOR | USB_DIR_IN, |
1da177e4 LT |
202 | 0, /* value */ |
203 | 0, /* index */ | |
204 | status_buf, KLSI_STATUSBUF_LEN, | |
205 | 10000 | |
206 | ); | |
207 | if (rc < 0) | |
194343d9 GKH |
208 | dev_err(&port->dev, "Reading line status failed (error = %d)\n", |
209 | rc); | |
1da177e4 | 210 | else { |
bd2c7845 | 211 | status = get_unaligned_le16(status_buf); |
1da177e4 | 212 | |
c197a8db GKH |
213 | dev_info(&port->serial->dev->dev, "read status %x %x", |
214 | status_buf[0], status_buf[1]); | |
1da177e4 LT |
215 | |
216 | *line_state_p = klsi_105_status2linestate(status); | |
217 | } | |
abf492e7 JH |
218 | |
219 | kfree(status_buf); | |
0c265f4e | 220 | return rc; |
1da177e4 LT |
221 | } |
222 | ||
223 | ||
224 | /* | |
225 | * Driver's tty interface functions | |
226 | */ | |
227 | ||
0c265f4e | 228 | static int klsi_105_startup(struct usb_serial *serial) |
1da177e4 LT |
229 | { |
230 | struct klsi_105_private *priv; | |
60b3013c | 231 | int i; |
1da177e4 LT |
232 | |
233 | /* check if we support the product id (see keyspan.c) | |
234 | * FIXME | |
235 | */ | |
236 | ||
237 | /* allocate the private data structure */ | |
0c265f4e | 238 | for (i = 0; i < serial->num_ports; i++) { |
1da177e4 LT |
239 | priv = kmalloc(sizeof(struct klsi_105_private), |
240 | GFP_KERNEL); | |
241 | if (!priv) { | |
441b62c1 | 242 | dbg("%skmalloc for klsi_105_private failed.", __func__); |
9306fff1 ON |
243 | i--; |
244 | goto err_cleanup; | |
1da177e4 LT |
245 | } |
246 | /* set initial values for control structures */ | |
247 | priv->cfg.pktlen = 5; | |
248 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
249 | priv->cfg.databits = kl5kusb105a_dtb_8; | |
250 | priv->cfg.unknown1 = 0; | |
251 | priv->cfg.unknown2 = 1; | |
252 | ||
253 | priv->line_state = 0; | |
254 | ||
1da177e4 LT |
255 | usb_set_serial_port_data(serial->port[i], priv); |
256 | ||
0c265f4e | 257 | spin_lock_init(&priv->lock); |
1da177e4 | 258 | |
421f91d2 | 259 | /* priv->termios is left uninitialized until port opening */ |
1da177e4 LT |
260 | init_waitqueue_head(&serial->port[i]->write_wait); |
261 | } | |
0c265f4e | 262 | |
9306fff1 ON |
263 | return 0; |
264 | ||
265 | err_cleanup: | |
266 | for (; i >= 0; i--) { | |
267 | priv = usb_get_serial_port_data(serial->port[i]); | |
313b0d80 | 268 | kfree(priv); |
9306fff1 ON |
269 | usb_set_serial_port_data(serial->port[i], NULL); |
270 | } | |
271 | return -ENOMEM; | |
ff8c195f | 272 | } |
1da177e4 | 273 | |
f9c99bb8 AS |
274 | static void klsi_105_release(struct usb_serial *serial) |
275 | { | |
276 | int i; | |
277 | ||
60b3013c JH |
278 | for (i = 0; i < serial->num_ports; ++i) |
279 | kfree(usb_get_serial_port_data(serial->port[i])); | |
ff8c195f | 280 | } |
1da177e4 | 281 | |
a509a7e4 | 282 | static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
283 | { |
284 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
285 | int retval = 0; | |
286 | int rc; | |
287 | int i; | |
288 | unsigned long line_state; | |
abf492e7 | 289 | struct klsi_105_port_settings *cfg; |
1da177e4 LT |
290 | unsigned long flags; |
291 | ||
1da177e4 LT |
292 | /* Do a defined restart: |
293 | * Set up sane default baud rate and send the 'READ_ON' | |
0c265f4e | 294 | * vendor command. |
1da177e4 LT |
295 | * FIXME: set modem line control (how?) |
296 | * Then read the modem line control and store values in | |
297 | * priv->line_state. | |
298 | */ | |
abf492e7 JH |
299 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
300 | if (!cfg) { | |
301 | dev_err(&port->dev, "%s - out of memory for config buffer.\n", | |
302 | __func__); | |
303 | return -ENOMEM; | |
304 | } | |
305 | cfg->pktlen = 5; | |
306 | cfg->baudrate = kl5kusb105a_sio_b9600; | |
307 | cfg->databits = kl5kusb105a_dtb_8; | |
308 | cfg->unknown1 = 0; | |
309 | cfg->unknown2 = 1; | |
310 | klsi_105_chg_port_settings(port, cfg); | |
0c265f4e | 311 | |
1da177e4 | 312 | /* set up termios structure */ |
0c265f4e | 313 | spin_lock_irqsave(&priv->lock, flags); |
adc8d746 AC |
314 | priv->termios.c_iflag = tty->termios.c_iflag; |
315 | priv->termios.c_oflag = tty->termios.c_oflag; | |
316 | priv->termios.c_cflag = tty->termios.c_cflag; | |
317 | priv->termios.c_lflag = tty->termios.c_lflag; | |
0c265f4e | 318 | for (i = 0; i < NCCS; i++) |
adc8d746 | 319 | priv->termios.c_cc[i] = tty->termios.c_cc[i]; |
abf492e7 JH |
320 | priv->cfg.pktlen = cfg->pktlen; |
321 | priv->cfg.baudrate = cfg->baudrate; | |
322 | priv->cfg.databits = cfg->databits; | |
323 | priv->cfg.unknown1 = cfg->unknown1; | |
324 | priv->cfg.unknown2 = cfg->unknown2; | |
0c265f4e | 325 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
326 | |
327 | /* READ_ON and urb submission */ | |
60b3013c | 328 | rc = usb_serial_generic_open(tty, port); |
1da177e4 | 329 | if (rc) { |
1da177e4 LT |
330 | retval = rc; |
331 | goto exit; | |
332 | } | |
333 | ||
334 | rc = usb_control_msg(port->serial->dev, | |
0c265f4e | 335 | usb_sndctrlpipe(port->serial->dev, 0), |
1da177e4 LT |
336 | KL5KUSB105A_SIO_CONFIGURE, |
337 | USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE, | |
338 | KL5KUSB105A_SIO_CONFIGURE_READ_ON, | |
339 | 0, /* index */ | |
340 | NULL, | |
341 | 0, | |
342 | KLSI_TIMEOUT); | |
343 | if (rc < 0) { | |
194343d9 | 344 | dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc); |
1da177e4 | 345 | retval = rc; |
0c265f4e | 346 | } else |
441b62c1 | 347 | dbg("%s - enabled reading", __func__); |
1da177e4 LT |
348 | |
349 | rc = klsi_105_get_line_state(port, &line_state); | |
350 | if (rc >= 0) { | |
0c265f4e | 351 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 352 | priv->line_state = line_state; |
0c265f4e | 353 | spin_unlock_irqrestore(&priv->lock, flags); |
441b62c1 | 354 | dbg("%s - read line state 0x%lx", __func__, line_state); |
1da177e4 LT |
355 | retval = 0; |
356 | } else | |
357 | retval = rc; | |
358 | ||
359 | exit: | |
abf492e7 | 360 | kfree(cfg); |
1da177e4 | 361 | return retval; |
ff8c195f | 362 | } |
1da177e4 | 363 | |
335f8514 | 364 | static void klsi_105_close(struct usb_serial_port *port) |
1da177e4 | 365 | { |
1da177e4 LT |
366 | int rc; |
367 | ||
3edbc986 ON |
368 | mutex_lock(&port->serial->disc_mutex); |
369 | if (!port->serial->disconnected) { | |
370 | /* send READ_OFF */ | |
0c265f4e AC |
371 | rc = usb_control_msg(port->serial->dev, |
372 | usb_sndctrlpipe(port->serial->dev, 0), | |
373 | KL5KUSB105A_SIO_CONFIGURE, | |
374 | USB_TYPE_VENDOR | USB_DIR_OUT, | |
375 | KL5KUSB105A_SIO_CONFIGURE_READ_OFF, | |
376 | 0, /* index */ | |
377 | NULL, 0, | |
378 | KLSI_TIMEOUT); | |
3edbc986 | 379 | if (rc < 0) |
194343d9 GKH |
380 | dev_err(&port->dev, |
381 | "Disabling read failed (error = %d)\n", rc); | |
3edbc986 ON |
382 | } |
383 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
384 | |
385 | /* shutdown our bulk reads and writes */ | |
60b3013c JH |
386 | usb_serial_generic_close(port); |
387 | ||
1da177e4 LT |
388 | /* wgg - do I need this? I think so. */ |
389 | usb_kill_urb(port->interrupt_in_urb); | |
ff8c195f | 390 | } |
1da177e4 LT |
391 | |
392 | /* We need to write a complete 64-byte data block and encode the | |
0c265f4e | 393 | * number actually sent in the first double-byte, LSB-order. That |
1da177e4 LT |
394 | * leaves at most 62 bytes of payload. |
395 | */ | |
60b3013c JH |
396 | #define KLSI_HDR_LEN 2 |
397 | static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, | |
398 | void *dest, size_t size) | |
1da177e4 | 399 | { |
60b3013c JH |
400 | unsigned char *buf = dest; |
401 | int count; | |
17c1b35a | 402 | |
60b3013c JH |
403 | count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size, |
404 | &port->lock); | |
405 | put_unaligned_le16(count, buf); | |
1da177e4 | 406 | |
60b3013c | 407 | return count + KLSI_HDR_LEN; |
ff8c195f | 408 | } |
1da177e4 | 409 | |
60b3013c JH |
410 | /* The data received is preceded by a length double-byte in LSB-first order. |
411 | */ | |
412 | static void klsi_105_process_read_urb(struct urb *urb) | |
1da177e4 | 413 | { |
cdc97792 | 414 | struct usb_serial_port *port = urb->context; |
1da177e4 | 415 | unsigned char *data = urb->transfer_buffer; |
60b3013c JH |
416 | struct tty_struct *tty; |
417 | unsigned len; | |
1da177e4 | 418 | |
60b3013c JH |
419 | /* empty urbs seem to happen, we ignore them */ |
420 | if (!urb->actual_length) | |
421 | return; | |
1da177e4 | 422 | |
60b3013c JH |
423 | if (urb->actual_length <= KLSI_HDR_LEN) { |
424 | dbg("%s - malformed packet", __func__); | |
17c1b35a GKH |
425 | return; |
426 | } | |
427 | ||
60b3013c JH |
428 | tty = tty_port_tty_get(&port->port); |
429 | if (!tty) | |
430 | return; | |
1da177e4 | 431 | |
60b3013c JH |
432 | len = get_unaligned_le16(data); |
433 | if (len > urb->actual_length - KLSI_HDR_LEN) { | |
434 | dbg("%s - packet length mismatch", __func__); | |
435 | len = urb->actual_length - KLSI_HDR_LEN; | |
1da177e4 | 436 | } |
60b3013c JH |
437 | |
438 | tty_insert_flip_string(tty, data + KLSI_HDR_LEN, len); | |
439 | tty_flip_buffer_push(tty); | |
440 | tty_kref_put(tty); | |
ff8c195f | 441 | } |
1da177e4 | 442 | |
0c265f4e AC |
443 | static void klsi_105_set_termios(struct tty_struct *tty, |
444 | struct usb_serial_port *port, | |
445 | struct ktermios *old_termios) | |
1da177e4 LT |
446 | { |
447 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
adc8d746 | 448 | unsigned int iflag = tty->termios.c_iflag; |
1da177e4 | 449 | unsigned int old_iflag = old_termios->c_iflag; |
adc8d746 | 450 | unsigned int cflag = tty->termios.c_cflag; |
1da177e4 | 451 | unsigned int old_cflag = old_termios->c_cflag; |
abf492e7 | 452 | struct klsi_105_port_settings *cfg; |
1da177e4 | 453 | unsigned long flags; |
a5b6f60c | 454 | speed_t baud; |
0c265f4e | 455 | |
abf492e7 JH |
456 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
457 | if (!cfg) { | |
458 | dev_err(&port->dev, "%s - out of memory for config buffer.\n", | |
459 | __func__); | |
460 | return; | |
461 | } | |
462 | ||
1da177e4 | 463 | /* lock while we are modifying the settings */ |
0c265f4e AC |
464 | spin_lock_irqsave(&priv->lock, flags); |
465 | ||
1da177e4 LT |
466 | /* |
467 | * Update baud rate | |
468 | */ | |
a5b6f60c AC |
469 | baud = tty_get_baud_rate(tty); |
470 | ||
0c265f4e AC |
471 | if ((cflag & CBAUD) != (old_cflag & CBAUD)) { |
472 | /* reassert DTR and (maybe) RTS on transition from B0 */ | |
473 | if ((old_cflag & CBAUD) == B0) { | |
441b62c1 | 474 | dbg("%s: baud was B0", __func__); |
1da177e4 LT |
475 | #if 0 |
476 | priv->control_state |= TIOCM_DTR; | |
477 | /* don't set RTS if using hardware flow control */ | |
0c265f4e | 478 | if (!(old_cflag & CRTSCTS)) |
1da177e4 | 479 | priv->control_state |= TIOCM_RTS; |
1da177e4 LT |
480 | mct_u232_set_modem_ctrl(serial, priv->control_state); |
481 | #endif | |
482 | } | |
a5b6f60c | 483 | } |
0c265f4e AC |
484 | switch (baud) { |
485 | case 0: /* handled below */ | |
486 | break; | |
487 | case 1200: | |
488 | priv->cfg.baudrate = kl5kusb105a_sio_b1200; | |
489 | break; | |
490 | case 2400: | |
491 | priv->cfg.baudrate = kl5kusb105a_sio_b2400; | |
492 | break; | |
493 | case 4800: | |
494 | priv->cfg.baudrate = kl5kusb105a_sio_b4800; | |
495 | break; | |
496 | case 9600: | |
497 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
498 | break; | |
499 | case 19200: | |
500 | priv->cfg.baudrate = kl5kusb105a_sio_b19200; | |
501 | break; | |
502 | case 38400: | |
503 | priv->cfg.baudrate = kl5kusb105a_sio_b38400; | |
504 | break; | |
505 | case 57600: | |
506 | priv->cfg.baudrate = kl5kusb105a_sio_b57600; | |
507 | break; | |
508 | case 115200: | |
509 | priv->cfg.baudrate = kl5kusb105a_sio_b115200; | |
510 | break; | |
511 | default: | |
512 | dbg("KLSI USB->Serial converter:" | |
513 | " unsupported baudrate request, using default of 9600"); | |
3f6ff6ef | 514 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; |
0c265f4e AC |
515 | baud = 9600; |
516 | break; | |
a5b6f60c | 517 | } |
0c265f4e | 518 | if ((cflag & CBAUD) == B0) { |
a5b6f60c AC |
519 | dbg("%s: baud is B0", __func__); |
520 | /* Drop RTS and DTR */ | |
521 | /* maybe this should be simulated by sending read | |
522 | * disable and read enable messages? | |
523 | */ | |
524 | ; | |
1da177e4 | 525 | #if 0 |
a5b6f60c | 526 | priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); |
0c265f4e | 527 | mct_u232_set_modem_ctrl(serial, priv->control_state); |
1da177e4 | 528 | #endif |
1da177e4 | 529 | } |
a5b6f60c | 530 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 LT |
531 | |
532 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { | |
533 | /* set the number of data bits */ | |
534 | switch (cflag & CSIZE) { | |
535 | case CS5: | |
441b62c1 | 536 | dbg("%s - 5 bits/byte not supported", __func__); |
0c265f4e | 537 | spin_unlock_irqrestore(&priv->lock, flags); |
abf492e7 | 538 | goto err; |
1da177e4 | 539 | case CS6: |
441b62c1 | 540 | dbg("%s - 6 bits/byte not supported", __func__); |
0c265f4e | 541 | spin_unlock_irqrestore(&priv->lock, flags); |
abf492e7 | 542 | goto err; |
1da177e4 LT |
543 | case CS7: |
544 | priv->cfg.databits = kl5kusb105a_dtb_7; | |
545 | break; | |
546 | case CS8: | |
547 | priv->cfg.databits = kl5kusb105a_dtb_8; | |
548 | break; | |
549 | default: | |
194343d9 GKH |
550 | dev_err(&port->dev, |
551 | "CSIZE was not CS5-CS8, using default of 8\n"); | |
1da177e4 LT |
552 | priv->cfg.databits = kl5kusb105a_dtb_8; |
553 | break; | |
554 | } | |
555 | } | |
556 | ||
557 | /* | |
558 | * Update line control register (LCR) | |
559 | */ | |
560 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD)) | |
0c265f4e | 561 | || (cflag & CSTOPB) != (old_cflag & CSTOPB)) { |
a5b6f60c | 562 | /* Not currently supported */ |
adc8d746 | 563 | tty->termios.c_cflag &= ~(PARENB|PARODD|CSTOPB); |
1da177e4 LT |
564 | #if 0 |
565 | priv->last_lcr = 0; | |
566 | ||
567 | /* set the parity */ | |
568 | if (cflag & PARENB) | |
569 | priv->last_lcr |= (cflag & PARODD) ? | |
570 | MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN; | |
571 | else | |
572 | priv->last_lcr |= MCT_U232_PARITY_NONE; | |
573 | ||
574 | /* set the number of stop bits */ | |
575 | priv->last_lcr |= (cflag & CSTOPB) ? | |
576 | MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1; | |
577 | ||
578 | mct_u232_set_line_ctrl(serial, priv->last_lcr); | |
579 | #endif | |
580 | ; | |
581 | } | |
1da177e4 LT |
582 | /* |
583 | * Set flow control: well, I do not really now how to handle DTR/RTS. | |
584 | * Just do what we have seen with SniffUSB on Win98. | |
585 | */ | |
0c265f4e | 586 | if ((iflag & IXOFF) != (old_iflag & IXOFF) |
1da177e4 | 587 | || (iflag & IXON) != (old_iflag & IXON) |
0c265f4e | 588 | || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { |
a5b6f60c | 589 | /* Not currently supported */ |
adc8d746 | 590 | tty->termios.c_cflag &= ~CRTSCTS; |
1da177e4 LT |
591 | /* Drop DTR/RTS if no flow control otherwise assert */ |
592 | #if 0 | |
0c265f4e | 593 | if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS)) |
1da177e4 LT |
594 | priv->control_state |= TIOCM_DTR | TIOCM_RTS; |
595 | else | |
596 | priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); | |
597 | mct_u232_set_modem_ctrl(serial, priv->control_state); | |
598 | #endif | |
599 | ; | |
600 | } | |
abf492e7 | 601 | memcpy(cfg, &priv->cfg, sizeof(*cfg)); |
0c265f4e AC |
602 | spin_unlock_irqrestore(&priv->lock, flags); |
603 | ||
1da177e4 | 604 | /* now commit changes to device */ |
abf492e7 JH |
605 | klsi_105_chg_port_settings(port, cfg); |
606 | err: | |
607 | kfree(cfg); | |
ff8c195f | 608 | } |
1da177e4 LT |
609 | |
610 | #if 0 | |
0c265f4e | 611 | static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 612 | { |
95da310e | 613 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 614 | struct usb_serial *serial = port->serial; |
0c265f4e AC |
615 | struct mct_u232_private *priv = |
616 | (struct mct_u232_private *)port->private; | |
1da177e4 LT |
617 | unsigned char lcr = priv->last_lcr; |
618 | ||
441b62c1 | 619 | dbg("%sstate=%d", __func__, break_state); |
1da177e4 | 620 | |
6b447f04 | 621 | /* LOCKING */ |
1da177e4 LT |
622 | if (break_state) |
623 | lcr |= MCT_U232_SET_BREAK; | |
624 | ||
625 | mct_u232_set_line_ctrl(serial, lcr); | |
ff8c195f | 626 | } |
1da177e4 LT |
627 | #endif |
628 | ||
60b33c13 | 629 | static int klsi_105_tiocmget(struct tty_struct *tty) |
1da177e4 | 630 | { |
95da310e | 631 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
632 | struct klsi_105_private *priv = usb_get_serial_port_data(port); |
633 | unsigned long flags; | |
634 | int rc; | |
635 | unsigned long line_state; | |
1da177e4 LT |
636 | |
637 | rc = klsi_105_get_line_state(port, &line_state); | |
638 | if (rc < 0) { | |
194343d9 GKH |
639 | dev_err(&port->dev, |
640 | "Reading line control failed (error = %d)\n", rc); | |
1da177e4 LT |
641 | /* better return value? EAGAIN? */ |
642 | return rc; | |
643 | } | |
644 | ||
0c265f4e | 645 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 646 | priv->line_state = line_state; |
0c265f4e | 647 | spin_unlock_irqrestore(&priv->lock, flags); |
441b62c1 | 648 | dbg("%s - read line state 0x%lx", __func__, line_state); |
1da177e4 LT |
649 | return (int)line_state; |
650 | } | |
651 | ||
20b9d177 | 652 | static int klsi_105_tiocmset(struct tty_struct *tty, |
0c265f4e | 653 | unsigned int set, unsigned int clear) |
1da177e4 LT |
654 | { |
655 | int retval = -EINVAL; | |
0c265f4e | 656 | |
1da177e4 LT |
657 | /* if this ever gets implemented, it should be done something like this: |
658 | struct usb_serial *serial = port->serial; | |
659 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
660 | unsigned long flags; | |
661 | int control; | |
662 | ||
663 | spin_lock_irqsave (&priv->lock, flags); | |
664 | if (set & TIOCM_RTS) | |
665 | priv->control_state |= TIOCM_RTS; | |
666 | if (set & TIOCM_DTR) | |
667 | priv->control_state |= TIOCM_DTR; | |
668 | if (clear & TIOCM_RTS) | |
669 | priv->control_state &= ~TIOCM_RTS; | |
670 | if (clear & TIOCM_DTR) | |
671 | priv->control_state &= ~TIOCM_DTR; | |
672 | control = priv->control_state; | |
673 | spin_unlock_irqrestore (&priv->lock, flags); | |
674 | retval = mct_u232_set_modem_ctrl(serial, control); | |
675 | */ | |
676 | return retval; | |
677 | } | |
1da177e4 | 678 | |
68e24113 | 679 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 | 680 | |
0c265f4e AC |
681 | MODULE_AUTHOR(DRIVER_AUTHOR); |
682 | MODULE_DESCRIPTION(DRIVER_DESC); | |
683 | MODULE_LICENSE("GPL"); | |
1da177e4 | 684 | |
1da177e4 LT |
685 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
686 | MODULE_PARM_DESC(debug, "enable extensive debugging messages"); |