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 LT |
88 | |
89 | static struct usb_driver kl5kusb105d_driver = { | |
1da177e4 LT |
90 | .name = "kl5kusb105d", |
91 | .probe = usb_serial_probe, | |
92 | .disconnect = usb_serial_disconnect, | |
93 | .id_table = id_table, | |
94 | }; | |
95 | ||
ea65370d | 96 | static struct usb_serial_driver kl5kusb105d_device = { |
18fcac35 GKH |
97 | .driver = { |
98 | .owner = THIS_MODULE, | |
269bda1c | 99 | .name = "kl5kusb105d", |
18fcac35 | 100 | }, |
ff8c195f | 101 | .description = "KL5KUSB105D / PalmConnect", |
ff8c195f JH |
102 | .id_table = id_table, |
103 | .num_ports = 1, | |
60b3013c | 104 | .bulk_out_size = 64, |
ff8c195f JH |
105 | .open = klsi_105_open, |
106 | .close = klsi_105_close, | |
ff8c195f JH |
107 | .set_termios = klsi_105_set_termios, |
108 | /*.break_ctl = klsi_105_break_ctl,*/ | |
109 | .tiocmget = klsi_105_tiocmget, | |
110 | .tiocmset = klsi_105_tiocmset, | |
111 | .attach = klsi_105_startup, | |
ff8c195f | 112 | .release = klsi_105_release, |
60b3013c JH |
113 | .throttle = usb_serial_generic_throttle, |
114 | .unthrottle = usb_serial_generic_unthrottle, | |
115 | .process_read_urb = klsi_105_process_read_urb, | |
116 | .prepare_write_buffer = klsi_105_prepare_write_buffer, | |
1da177e4 LT |
117 | }; |
118 | ||
4d2a7aff AS |
119 | static struct usb_serial_driver * const serial_drivers[] = { |
120 | &kl5kusb105d_device, NULL | |
121 | }; | |
122 | ||
1da177e4 LT |
123 | struct klsi_105_port_settings { |
124 | __u8 pktlen; /* always 5, it seems */ | |
125 | __u8 baudrate; | |
126 | __u8 databits; | |
127 | __u8 unknown1; | |
128 | __u8 unknown2; | |
129 | } __attribute__ ((packed)); | |
130 | ||
1da177e4 LT |
131 | struct klsi_105_private { |
132 | struct klsi_105_port_settings cfg; | |
606d099c | 133 | struct ktermios termios; |
1da177e4 | 134 | unsigned long line_state; /* modem line settings */ |
1da177e4 | 135 | spinlock_t lock; |
1da177e4 LT |
136 | }; |
137 | ||
138 | ||
139 | /* | |
140 | * Handle vendor specific USB requests | |
141 | */ | |
142 | ||
143 | ||
144 | #define KLSI_TIMEOUT 5000 /* default urb timeout */ | |
145 | ||
146 | static int klsi_105_chg_port_settings(struct usb_serial_port *port, | |
147 | struct klsi_105_port_settings *settings) | |
148 | { | |
149 | int rc; | |
150 | ||
0c265f4e AC |
151 | rc = usb_control_msg(port->serial->dev, |
152 | usb_sndctrlpipe(port->serial->dev, 0), | |
153 | KL5KUSB105A_SIO_SET_DATA, | |
154 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE, | |
155 | 0, /* value */ | |
156 | 0, /* index */ | |
157 | settings, | |
158 | sizeof(struct klsi_105_port_settings), | |
159 | KLSI_TIMEOUT); | |
1da177e4 | 160 | if (rc < 0) |
194343d9 GKH |
161 | dev_err(&port->dev, |
162 | "Change port settings failed (error = %d)\n", rc); | |
c197a8db GKH |
163 | dev_info(&port->serial->dev->dev, |
164 | "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n", | |
165 | settings->pktlen, settings->baudrate, settings->databits, | |
166 | settings->unknown1, settings->unknown2); | |
0c265f4e | 167 | return rc; |
ff8c195f | 168 | } |
1da177e4 LT |
169 | |
170 | /* translate a 16-bit status value from the device to linux's TIO bits */ | |
171 | static unsigned long klsi_105_status2linestate(const __u16 status) | |
172 | { | |
173 | unsigned long res = 0; | |
174 | ||
175 | res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0) | |
176 | | ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0) | |
177 | ; | |
178 | ||
179 | return res; | |
180 | } | |
ff8c195f | 181 | |
0c265f4e | 182 | /* |
1da177e4 | 183 | * Read line control via vendor command and return result through |
0c265f4e | 184 | * *line_state_p |
1da177e4 LT |
185 | */ |
186 | /* It seems that the status buffer has always only 2 bytes length */ | |
187 | #define KLSI_STATUSBUF_LEN 2 | |
188 | static int klsi_105_get_line_state(struct usb_serial_port *port, | |
189 | unsigned long *line_state_p) | |
190 | { | |
191 | int rc; | |
abf492e7 | 192 | u8 *status_buf; |
1da177e4 LT |
193 | __u16 status; |
194 | ||
c197a8db | 195 | dev_info(&port->serial->dev->dev, "sending SIO Poll request\n"); |
abf492e7 JH |
196 | |
197 | status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL); | |
198 | if (!status_buf) { | |
199 | dev_err(&port->dev, "%s - out of memory for status buffer.\n", | |
200 | __func__); | |
201 | return -ENOMEM; | |
202 | } | |
203 | status_buf[0] = 0xff; | |
204 | status_buf[1] = 0xff; | |
0c265f4e | 205 | rc = usb_control_msg(port->serial->dev, |
1da177e4 LT |
206 | usb_rcvctrlpipe(port->serial->dev, 0), |
207 | KL5KUSB105A_SIO_POLL, | |
0c265f4e | 208 | USB_TYPE_VENDOR | USB_DIR_IN, |
1da177e4 LT |
209 | 0, /* value */ |
210 | 0, /* index */ | |
211 | status_buf, KLSI_STATUSBUF_LEN, | |
212 | 10000 | |
213 | ); | |
214 | if (rc < 0) | |
194343d9 GKH |
215 | dev_err(&port->dev, "Reading line status failed (error = %d)\n", |
216 | rc); | |
1da177e4 | 217 | else { |
bd2c7845 | 218 | status = get_unaligned_le16(status_buf); |
1da177e4 | 219 | |
c197a8db GKH |
220 | dev_info(&port->serial->dev->dev, "read status %x %x", |
221 | status_buf[0], status_buf[1]); | |
1da177e4 LT |
222 | |
223 | *line_state_p = klsi_105_status2linestate(status); | |
224 | } | |
abf492e7 JH |
225 | |
226 | kfree(status_buf); | |
0c265f4e | 227 | return rc; |
1da177e4 LT |
228 | } |
229 | ||
230 | ||
231 | /* | |
232 | * Driver's tty interface functions | |
233 | */ | |
234 | ||
0c265f4e | 235 | static int klsi_105_startup(struct usb_serial *serial) |
1da177e4 LT |
236 | { |
237 | struct klsi_105_private *priv; | |
60b3013c | 238 | int i; |
1da177e4 LT |
239 | |
240 | /* check if we support the product id (see keyspan.c) | |
241 | * FIXME | |
242 | */ | |
243 | ||
244 | /* allocate the private data structure */ | |
0c265f4e | 245 | for (i = 0; i < serial->num_ports; i++) { |
1da177e4 LT |
246 | priv = kmalloc(sizeof(struct klsi_105_private), |
247 | GFP_KERNEL); | |
248 | if (!priv) { | |
441b62c1 | 249 | dbg("%skmalloc for klsi_105_private failed.", __func__); |
9306fff1 ON |
250 | i--; |
251 | goto err_cleanup; | |
1da177e4 LT |
252 | } |
253 | /* set initial values for control structures */ | |
254 | priv->cfg.pktlen = 5; | |
255 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
256 | priv->cfg.databits = kl5kusb105a_dtb_8; | |
257 | priv->cfg.unknown1 = 0; | |
258 | priv->cfg.unknown2 = 1; | |
259 | ||
260 | priv->line_state = 0; | |
261 | ||
1da177e4 LT |
262 | usb_set_serial_port_data(serial->port[i], priv); |
263 | ||
0c265f4e | 264 | spin_lock_init(&priv->lock); |
1da177e4 | 265 | |
421f91d2 | 266 | /* priv->termios is left uninitialized until port opening */ |
1da177e4 LT |
267 | init_waitqueue_head(&serial->port[i]->write_wait); |
268 | } | |
0c265f4e | 269 | |
9306fff1 ON |
270 | return 0; |
271 | ||
272 | err_cleanup: | |
273 | for (; i >= 0; i--) { | |
274 | priv = usb_get_serial_port_data(serial->port[i]); | |
313b0d80 | 275 | kfree(priv); |
9306fff1 ON |
276 | usb_set_serial_port_data(serial->port[i], NULL); |
277 | } | |
278 | return -ENOMEM; | |
ff8c195f | 279 | } |
1da177e4 | 280 | |
f9c99bb8 AS |
281 | static void klsi_105_release(struct usb_serial *serial) |
282 | { | |
283 | int i; | |
284 | ||
60b3013c JH |
285 | for (i = 0; i < serial->num_ports; ++i) |
286 | kfree(usb_get_serial_port_data(serial->port[i])); | |
ff8c195f | 287 | } |
1da177e4 | 288 | |
a509a7e4 | 289 | static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
290 | { |
291 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
292 | int retval = 0; | |
293 | int rc; | |
294 | int i; | |
295 | unsigned long line_state; | |
abf492e7 | 296 | struct klsi_105_port_settings *cfg; |
1da177e4 LT |
297 | unsigned long flags; |
298 | ||
1da177e4 LT |
299 | /* Do a defined restart: |
300 | * Set up sane default baud rate and send the 'READ_ON' | |
0c265f4e | 301 | * vendor command. |
1da177e4 LT |
302 | * FIXME: set modem line control (how?) |
303 | * Then read the modem line control and store values in | |
304 | * priv->line_state. | |
305 | */ | |
abf492e7 JH |
306 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
307 | if (!cfg) { | |
308 | dev_err(&port->dev, "%s - out of memory for config buffer.\n", | |
309 | __func__); | |
310 | return -ENOMEM; | |
311 | } | |
312 | cfg->pktlen = 5; | |
313 | cfg->baudrate = kl5kusb105a_sio_b9600; | |
314 | cfg->databits = kl5kusb105a_dtb_8; | |
315 | cfg->unknown1 = 0; | |
316 | cfg->unknown2 = 1; | |
317 | klsi_105_chg_port_settings(port, cfg); | |
0c265f4e | 318 | |
1da177e4 | 319 | /* set up termios structure */ |
0c265f4e | 320 | spin_lock_irqsave(&priv->lock, flags); |
95da310e AC |
321 | priv->termios.c_iflag = tty->termios->c_iflag; |
322 | priv->termios.c_oflag = tty->termios->c_oflag; | |
323 | priv->termios.c_cflag = tty->termios->c_cflag; | |
324 | priv->termios.c_lflag = tty->termios->c_lflag; | |
0c265f4e | 325 | for (i = 0; i < NCCS; i++) |
95da310e | 326 | priv->termios.c_cc[i] = tty->termios->c_cc[i]; |
abf492e7 JH |
327 | priv->cfg.pktlen = cfg->pktlen; |
328 | priv->cfg.baudrate = cfg->baudrate; | |
329 | priv->cfg.databits = cfg->databits; | |
330 | priv->cfg.unknown1 = cfg->unknown1; | |
331 | priv->cfg.unknown2 = cfg->unknown2; | |
0c265f4e | 332 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
333 | |
334 | /* READ_ON and urb submission */ | |
60b3013c | 335 | rc = usb_serial_generic_open(tty, port); |
1da177e4 | 336 | if (rc) { |
1da177e4 LT |
337 | retval = rc; |
338 | goto exit; | |
339 | } | |
340 | ||
341 | rc = usb_control_msg(port->serial->dev, | |
0c265f4e | 342 | usb_sndctrlpipe(port->serial->dev, 0), |
1da177e4 LT |
343 | KL5KUSB105A_SIO_CONFIGURE, |
344 | USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE, | |
345 | KL5KUSB105A_SIO_CONFIGURE_READ_ON, | |
346 | 0, /* index */ | |
347 | NULL, | |
348 | 0, | |
349 | KLSI_TIMEOUT); | |
350 | if (rc < 0) { | |
194343d9 | 351 | dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc); |
1da177e4 | 352 | retval = rc; |
0c265f4e | 353 | } else |
441b62c1 | 354 | dbg("%s - enabled reading", __func__); |
1da177e4 LT |
355 | |
356 | rc = klsi_105_get_line_state(port, &line_state); | |
357 | if (rc >= 0) { | |
0c265f4e | 358 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 359 | priv->line_state = line_state; |
0c265f4e | 360 | spin_unlock_irqrestore(&priv->lock, flags); |
441b62c1 | 361 | dbg("%s - read line state 0x%lx", __func__, line_state); |
1da177e4 LT |
362 | retval = 0; |
363 | } else | |
364 | retval = rc; | |
365 | ||
366 | exit: | |
abf492e7 | 367 | kfree(cfg); |
1da177e4 | 368 | return retval; |
ff8c195f | 369 | } |
1da177e4 | 370 | |
335f8514 | 371 | static void klsi_105_close(struct usb_serial_port *port) |
1da177e4 | 372 | { |
1da177e4 LT |
373 | int rc; |
374 | ||
3edbc986 ON |
375 | mutex_lock(&port->serial->disc_mutex); |
376 | if (!port->serial->disconnected) { | |
377 | /* send READ_OFF */ | |
0c265f4e AC |
378 | rc = usb_control_msg(port->serial->dev, |
379 | usb_sndctrlpipe(port->serial->dev, 0), | |
380 | KL5KUSB105A_SIO_CONFIGURE, | |
381 | USB_TYPE_VENDOR | USB_DIR_OUT, | |
382 | KL5KUSB105A_SIO_CONFIGURE_READ_OFF, | |
383 | 0, /* index */ | |
384 | NULL, 0, | |
385 | KLSI_TIMEOUT); | |
3edbc986 | 386 | if (rc < 0) |
194343d9 GKH |
387 | dev_err(&port->dev, |
388 | "Disabling read failed (error = %d)\n", rc); | |
3edbc986 ON |
389 | } |
390 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
391 | |
392 | /* shutdown our bulk reads and writes */ | |
60b3013c JH |
393 | usb_serial_generic_close(port); |
394 | ||
1da177e4 LT |
395 | /* wgg - do I need this? I think so. */ |
396 | usb_kill_urb(port->interrupt_in_urb); | |
ff8c195f | 397 | } |
1da177e4 LT |
398 | |
399 | /* We need to write a complete 64-byte data block and encode the | |
0c265f4e | 400 | * number actually sent in the first double-byte, LSB-order. That |
1da177e4 LT |
401 | * leaves at most 62 bytes of payload. |
402 | */ | |
60b3013c JH |
403 | #define KLSI_HDR_LEN 2 |
404 | static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, | |
405 | void *dest, size_t size) | |
1da177e4 | 406 | { |
60b3013c JH |
407 | unsigned char *buf = dest; |
408 | int count; | |
17c1b35a | 409 | |
60b3013c JH |
410 | count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size, |
411 | &port->lock); | |
412 | put_unaligned_le16(count, buf); | |
1da177e4 | 413 | |
60b3013c | 414 | return count + KLSI_HDR_LEN; |
ff8c195f | 415 | } |
1da177e4 | 416 | |
60b3013c JH |
417 | /* The data received is preceded by a length double-byte in LSB-first order. |
418 | */ | |
419 | static void klsi_105_process_read_urb(struct urb *urb) | |
1da177e4 | 420 | { |
cdc97792 | 421 | struct usb_serial_port *port = urb->context; |
1da177e4 | 422 | unsigned char *data = urb->transfer_buffer; |
60b3013c JH |
423 | struct tty_struct *tty; |
424 | unsigned len; | |
1da177e4 | 425 | |
60b3013c JH |
426 | /* empty urbs seem to happen, we ignore them */ |
427 | if (!urb->actual_length) | |
428 | return; | |
1da177e4 | 429 | |
60b3013c JH |
430 | if (urb->actual_length <= KLSI_HDR_LEN) { |
431 | dbg("%s - malformed packet", __func__); | |
17c1b35a GKH |
432 | return; |
433 | } | |
434 | ||
60b3013c JH |
435 | tty = tty_port_tty_get(&port->port); |
436 | if (!tty) | |
437 | return; | |
1da177e4 | 438 | |
60b3013c JH |
439 | len = get_unaligned_le16(data); |
440 | if (len > urb->actual_length - KLSI_HDR_LEN) { | |
441 | dbg("%s - packet length mismatch", __func__); | |
442 | len = urb->actual_length - KLSI_HDR_LEN; | |
1da177e4 | 443 | } |
60b3013c JH |
444 | |
445 | tty_insert_flip_string(tty, data + KLSI_HDR_LEN, len); | |
446 | tty_flip_buffer_push(tty); | |
447 | tty_kref_put(tty); | |
ff8c195f | 448 | } |
1da177e4 | 449 | |
0c265f4e AC |
450 | static void klsi_105_set_termios(struct tty_struct *tty, |
451 | struct usb_serial_port *port, | |
452 | struct ktermios *old_termios) | |
1da177e4 LT |
453 | { |
454 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
a5b6f60c | 455 | unsigned int iflag = tty->termios->c_iflag; |
1da177e4 | 456 | unsigned int old_iflag = old_termios->c_iflag; |
a5b6f60c | 457 | unsigned int cflag = tty->termios->c_cflag; |
1da177e4 | 458 | unsigned int old_cflag = old_termios->c_cflag; |
abf492e7 | 459 | struct klsi_105_port_settings *cfg; |
1da177e4 | 460 | unsigned long flags; |
a5b6f60c | 461 | speed_t baud; |
0c265f4e | 462 | |
abf492e7 JH |
463 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
464 | if (!cfg) { | |
465 | dev_err(&port->dev, "%s - out of memory for config buffer.\n", | |
466 | __func__); | |
467 | return; | |
468 | } | |
469 | ||
1da177e4 | 470 | /* lock while we are modifying the settings */ |
0c265f4e AC |
471 | spin_lock_irqsave(&priv->lock, flags); |
472 | ||
1da177e4 LT |
473 | /* |
474 | * Update baud rate | |
475 | */ | |
a5b6f60c AC |
476 | baud = tty_get_baud_rate(tty); |
477 | ||
0c265f4e AC |
478 | if ((cflag & CBAUD) != (old_cflag & CBAUD)) { |
479 | /* reassert DTR and (maybe) RTS on transition from B0 */ | |
480 | if ((old_cflag & CBAUD) == B0) { | |
441b62c1 | 481 | dbg("%s: baud was B0", __func__); |
1da177e4 LT |
482 | #if 0 |
483 | priv->control_state |= TIOCM_DTR; | |
484 | /* don't set RTS if using hardware flow control */ | |
0c265f4e | 485 | if (!(old_cflag & CRTSCTS)) |
1da177e4 | 486 | priv->control_state |= TIOCM_RTS; |
1da177e4 LT |
487 | mct_u232_set_modem_ctrl(serial, priv->control_state); |
488 | #endif | |
489 | } | |
a5b6f60c | 490 | } |
0c265f4e AC |
491 | switch (baud) { |
492 | case 0: /* handled below */ | |
493 | break; | |
494 | case 1200: | |
495 | priv->cfg.baudrate = kl5kusb105a_sio_b1200; | |
496 | break; | |
497 | case 2400: | |
498 | priv->cfg.baudrate = kl5kusb105a_sio_b2400; | |
499 | break; | |
500 | case 4800: | |
501 | priv->cfg.baudrate = kl5kusb105a_sio_b4800; | |
502 | break; | |
503 | case 9600: | |
504 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
505 | break; | |
506 | case 19200: | |
507 | priv->cfg.baudrate = kl5kusb105a_sio_b19200; | |
508 | break; | |
509 | case 38400: | |
510 | priv->cfg.baudrate = kl5kusb105a_sio_b38400; | |
511 | break; | |
512 | case 57600: | |
513 | priv->cfg.baudrate = kl5kusb105a_sio_b57600; | |
514 | break; | |
515 | case 115200: | |
516 | priv->cfg.baudrate = kl5kusb105a_sio_b115200; | |
517 | break; | |
518 | default: | |
519 | dbg("KLSI USB->Serial converter:" | |
520 | " unsupported baudrate request, using default of 9600"); | |
3f6ff6ef | 521 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; |
0c265f4e AC |
522 | baud = 9600; |
523 | break; | |
a5b6f60c | 524 | } |
0c265f4e | 525 | if ((cflag & CBAUD) == B0) { |
a5b6f60c AC |
526 | dbg("%s: baud is B0", __func__); |
527 | /* Drop RTS and DTR */ | |
528 | /* maybe this should be simulated by sending read | |
529 | * disable and read enable messages? | |
530 | */ | |
531 | ; | |
1da177e4 | 532 | #if 0 |
a5b6f60c | 533 | priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); |
0c265f4e | 534 | mct_u232_set_modem_ctrl(serial, priv->control_state); |
1da177e4 | 535 | #endif |
1da177e4 | 536 | } |
a5b6f60c | 537 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 LT |
538 | |
539 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { | |
540 | /* set the number of data bits */ | |
541 | switch (cflag & CSIZE) { | |
542 | case CS5: | |
441b62c1 | 543 | dbg("%s - 5 bits/byte not supported", __func__); |
0c265f4e | 544 | spin_unlock_irqrestore(&priv->lock, flags); |
abf492e7 | 545 | goto err; |
1da177e4 | 546 | case CS6: |
441b62c1 | 547 | dbg("%s - 6 bits/byte not supported", __func__); |
0c265f4e | 548 | spin_unlock_irqrestore(&priv->lock, flags); |
abf492e7 | 549 | goto err; |
1da177e4 LT |
550 | case CS7: |
551 | priv->cfg.databits = kl5kusb105a_dtb_7; | |
552 | break; | |
553 | case CS8: | |
554 | priv->cfg.databits = kl5kusb105a_dtb_8; | |
555 | break; | |
556 | default: | |
194343d9 GKH |
557 | dev_err(&port->dev, |
558 | "CSIZE was not CS5-CS8, using default of 8\n"); | |
1da177e4 LT |
559 | priv->cfg.databits = kl5kusb105a_dtb_8; |
560 | break; | |
561 | } | |
562 | } | |
563 | ||
564 | /* | |
565 | * Update line control register (LCR) | |
566 | */ | |
567 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD)) | |
0c265f4e | 568 | || (cflag & CSTOPB) != (old_cflag & CSTOPB)) { |
a5b6f60c AC |
569 | /* Not currently supported */ |
570 | tty->termios->c_cflag &= ~(PARENB|PARODD|CSTOPB); | |
1da177e4 LT |
571 | #if 0 |
572 | priv->last_lcr = 0; | |
573 | ||
574 | /* set the parity */ | |
575 | if (cflag & PARENB) | |
576 | priv->last_lcr |= (cflag & PARODD) ? | |
577 | MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN; | |
578 | else | |
579 | priv->last_lcr |= MCT_U232_PARITY_NONE; | |
580 | ||
581 | /* set the number of stop bits */ | |
582 | priv->last_lcr |= (cflag & CSTOPB) ? | |
583 | MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1; | |
584 | ||
585 | mct_u232_set_line_ctrl(serial, priv->last_lcr); | |
586 | #endif | |
587 | ; | |
588 | } | |
1da177e4 LT |
589 | /* |
590 | * Set flow control: well, I do not really now how to handle DTR/RTS. | |
591 | * Just do what we have seen with SniffUSB on Win98. | |
592 | */ | |
0c265f4e | 593 | if ((iflag & IXOFF) != (old_iflag & IXOFF) |
1da177e4 | 594 | || (iflag & IXON) != (old_iflag & IXON) |
0c265f4e | 595 | || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { |
a5b6f60c AC |
596 | /* Not currently supported */ |
597 | tty->termios->c_cflag &= ~CRTSCTS; | |
1da177e4 LT |
598 | /* Drop DTR/RTS if no flow control otherwise assert */ |
599 | #if 0 | |
0c265f4e | 600 | if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS)) |
1da177e4 LT |
601 | priv->control_state |= TIOCM_DTR | TIOCM_RTS; |
602 | else | |
603 | priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); | |
604 | mct_u232_set_modem_ctrl(serial, priv->control_state); | |
605 | #endif | |
606 | ; | |
607 | } | |
abf492e7 | 608 | memcpy(cfg, &priv->cfg, sizeof(*cfg)); |
0c265f4e AC |
609 | spin_unlock_irqrestore(&priv->lock, flags); |
610 | ||
1da177e4 | 611 | /* now commit changes to device */ |
abf492e7 JH |
612 | klsi_105_chg_port_settings(port, cfg); |
613 | err: | |
614 | kfree(cfg); | |
ff8c195f | 615 | } |
1da177e4 LT |
616 | |
617 | #if 0 | |
0c265f4e | 618 | static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 619 | { |
95da310e | 620 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 621 | struct usb_serial *serial = port->serial; |
0c265f4e AC |
622 | struct mct_u232_private *priv = |
623 | (struct mct_u232_private *)port->private; | |
1da177e4 LT |
624 | unsigned char lcr = priv->last_lcr; |
625 | ||
441b62c1 | 626 | dbg("%sstate=%d", __func__, break_state); |
1da177e4 | 627 | |
6b447f04 | 628 | /* LOCKING */ |
1da177e4 LT |
629 | if (break_state) |
630 | lcr |= MCT_U232_SET_BREAK; | |
631 | ||
632 | mct_u232_set_line_ctrl(serial, lcr); | |
ff8c195f | 633 | } |
1da177e4 LT |
634 | #endif |
635 | ||
60b33c13 | 636 | static int klsi_105_tiocmget(struct tty_struct *tty) |
1da177e4 | 637 | { |
95da310e | 638 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
639 | struct klsi_105_private *priv = usb_get_serial_port_data(port); |
640 | unsigned long flags; | |
641 | int rc; | |
642 | unsigned long line_state; | |
1da177e4 LT |
643 | |
644 | rc = klsi_105_get_line_state(port, &line_state); | |
645 | if (rc < 0) { | |
194343d9 GKH |
646 | dev_err(&port->dev, |
647 | "Reading line control failed (error = %d)\n", rc); | |
1da177e4 LT |
648 | /* better return value? EAGAIN? */ |
649 | return rc; | |
650 | } | |
651 | ||
0c265f4e | 652 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 653 | priv->line_state = line_state; |
0c265f4e | 654 | spin_unlock_irqrestore(&priv->lock, flags); |
441b62c1 | 655 | dbg("%s - read line state 0x%lx", __func__, line_state); |
1da177e4 LT |
656 | return (int)line_state; |
657 | } | |
658 | ||
20b9d177 | 659 | static int klsi_105_tiocmset(struct tty_struct *tty, |
0c265f4e | 660 | unsigned int set, unsigned int clear) |
1da177e4 LT |
661 | { |
662 | int retval = -EINVAL; | |
0c265f4e | 663 | |
1da177e4 LT |
664 | /* if this ever gets implemented, it should be done something like this: |
665 | struct usb_serial *serial = port->serial; | |
666 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
667 | unsigned long flags; | |
668 | int control; | |
669 | ||
670 | spin_lock_irqsave (&priv->lock, flags); | |
671 | if (set & TIOCM_RTS) | |
672 | priv->control_state |= TIOCM_RTS; | |
673 | if (set & TIOCM_DTR) | |
674 | priv->control_state |= TIOCM_DTR; | |
675 | if (clear & TIOCM_RTS) | |
676 | priv->control_state &= ~TIOCM_RTS; | |
677 | if (clear & TIOCM_DTR) | |
678 | priv->control_state &= ~TIOCM_DTR; | |
679 | control = priv->control_state; | |
680 | spin_unlock_irqrestore (&priv->lock, flags); | |
681 | retval = mct_u232_set_modem_ctrl(serial, control); | |
682 | */ | |
683 | return retval; | |
684 | } | |
1da177e4 | 685 | |
11f79858 | 686 | module_usb_serial_driver(kl5kusb105d_driver, serial_drivers); |
1da177e4 | 687 | |
0c265f4e AC |
688 | MODULE_AUTHOR(DRIVER_AUTHOR); |
689 | MODULE_DESCRIPTION(DRIVER_DESC); | |
690 | MODULE_LICENSE("GPL"); | |
1da177e4 | 691 | |
1da177e4 LT |
692 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
693 | MODULE_PARM_DESC(debug, "enable extensive debugging messages"); |