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 | ||
60b3013c | 52 | #define DRIVER_AUTHOR "Utz-Uwe Haus <haus@uuhaus.de>, Johan Hovold <jhovold@gmail.com>" |
1da177e4 LT |
53 | #define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver" |
54 | ||
55 | ||
56 | /* | |
57 | * Function prototypes | |
58 | */ | |
99a6f73c JH |
59 | static int klsi_105_port_probe(struct usb_serial_port *port); |
60 | static int klsi_105_port_remove(struct usb_serial_port *port); | |
a509a7e4 | 61 | static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 62 | static void klsi_105_close(struct usb_serial_port *port); |
0c265f4e AC |
63 | static void klsi_105_set_termios(struct tty_struct *tty, |
64 | struct usb_serial_port *port, struct ktermios *old); | |
60b33c13 | 65 | static int klsi_105_tiocmget(struct tty_struct *tty); |
20b9d177 | 66 | static int klsi_105_tiocmset(struct tty_struct *tty, |
0c265f4e | 67 | unsigned int set, unsigned int clear); |
60b3013c JH |
68 | static void klsi_105_process_read_urb(struct urb *urb); |
69 | static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, | |
70 | void *dest, size_t size); | |
1da177e4 LT |
71 | |
72 | /* | |
73 | * All of the device info needed for the KLSI converters. | |
74 | */ | |
7d40d7e8 | 75 | static const struct usb_device_id id_table[] = { |
1da177e4 LT |
76 | { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) }, |
77 | { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) }, | |
78 | { } /* Terminating entry */ | |
79 | }; | |
80 | ||
0c265f4e | 81 | MODULE_DEVICE_TABLE(usb, id_table); |
1da177e4 | 82 | |
ea65370d | 83 | static struct usb_serial_driver kl5kusb105d_device = { |
18fcac35 GKH |
84 | .driver = { |
85 | .owner = THIS_MODULE, | |
269bda1c | 86 | .name = "kl5kusb105d", |
18fcac35 | 87 | }, |
ff8c195f | 88 | .description = "KL5KUSB105D / PalmConnect", |
ff8c195f JH |
89 | .id_table = id_table, |
90 | .num_ports = 1, | |
60b3013c | 91 | .bulk_out_size = 64, |
ff8c195f JH |
92 | .open = klsi_105_open, |
93 | .close = klsi_105_close, | |
ff8c195f JH |
94 | .set_termios = klsi_105_set_termios, |
95 | /*.break_ctl = klsi_105_break_ctl,*/ | |
96 | .tiocmget = klsi_105_tiocmget, | |
97 | .tiocmset = klsi_105_tiocmset, | |
99a6f73c JH |
98 | .port_probe = klsi_105_port_probe, |
99 | .port_remove = klsi_105_port_remove, | |
60b3013c JH |
100 | .throttle = usb_serial_generic_throttle, |
101 | .unthrottle = usb_serial_generic_unthrottle, | |
102 | .process_read_urb = klsi_105_process_read_urb, | |
103 | .prepare_write_buffer = klsi_105_prepare_write_buffer, | |
1da177e4 LT |
104 | }; |
105 | ||
4d2a7aff AS |
106 | static struct usb_serial_driver * const serial_drivers[] = { |
107 | &kl5kusb105d_device, NULL | |
108 | }; | |
109 | ||
1da177e4 LT |
110 | struct klsi_105_port_settings { |
111 | __u8 pktlen; /* always 5, it seems */ | |
112 | __u8 baudrate; | |
113 | __u8 databits; | |
114 | __u8 unknown1; | |
115 | __u8 unknown2; | |
116 | } __attribute__ ((packed)); | |
117 | ||
1da177e4 LT |
118 | struct klsi_105_private { |
119 | struct klsi_105_port_settings cfg; | |
606d099c | 120 | struct ktermios termios; |
1da177e4 | 121 | unsigned long line_state; /* modem line settings */ |
1da177e4 | 122 | spinlock_t lock; |
1da177e4 LT |
123 | }; |
124 | ||
125 | ||
126 | /* | |
127 | * Handle vendor specific USB requests | |
128 | */ | |
129 | ||
130 | ||
131 | #define KLSI_TIMEOUT 5000 /* default urb timeout */ | |
132 | ||
133 | static int klsi_105_chg_port_settings(struct usb_serial_port *port, | |
134 | struct klsi_105_port_settings *settings) | |
135 | { | |
136 | int rc; | |
137 | ||
0c265f4e AC |
138 | rc = usb_control_msg(port->serial->dev, |
139 | usb_sndctrlpipe(port->serial->dev, 0), | |
140 | KL5KUSB105A_SIO_SET_DATA, | |
141 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE, | |
142 | 0, /* value */ | |
143 | 0, /* index */ | |
144 | settings, | |
145 | sizeof(struct klsi_105_port_settings), | |
146 | KLSI_TIMEOUT); | |
1da177e4 | 147 | if (rc < 0) |
194343d9 GKH |
148 | dev_err(&port->dev, |
149 | "Change port settings failed (error = %d)\n", rc); | |
c197a8db GKH |
150 | dev_info(&port->serial->dev->dev, |
151 | "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n", | |
152 | settings->pktlen, settings->baudrate, settings->databits, | |
153 | settings->unknown1, settings->unknown2); | |
0c265f4e | 154 | return rc; |
ff8c195f | 155 | } |
1da177e4 LT |
156 | |
157 | /* translate a 16-bit status value from the device to linux's TIO bits */ | |
158 | static unsigned long klsi_105_status2linestate(const __u16 status) | |
159 | { | |
160 | unsigned long res = 0; | |
161 | ||
162 | res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0) | |
163 | | ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0) | |
164 | ; | |
165 | ||
166 | return res; | |
167 | } | |
ff8c195f | 168 | |
0c265f4e | 169 | /* |
1da177e4 | 170 | * Read line control via vendor command and return result through |
0c265f4e | 171 | * *line_state_p |
1da177e4 LT |
172 | */ |
173 | /* It seems that the status buffer has always only 2 bytes length */ | |
174 | #define KLSI_STATUSBUF_LEN 2 | |
175 | static int klsi_105_get_line_state(struct usb_serial_port *port, | |
176 | unsigned long *line_state_p) | |
177 | { | |
178 | int rc; | |
abf492e7 | 179 | u8 *status_buf; |
1da177e4 LT |
180 | __u16 status; |
181 | ||
c197a8db | 182 | dev_info(&port->serial->dev->dev, "sending SIO Poll request\n"); |
abf492e7 JH |
183 | |
184 | status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL); | |
185 | if (!status_buf) { | |
186 | dev_err(&port->dev, "%s - out of memory for status buffer.\n", | |
187 | __func__); | |
188 | return -ENOMEM; | |
189 | } | |
190 | status_buf[0] = 0xff; | |
191 | status_buf[1] = 0xff; | |
0c265f4e | 192 | rc = usb_control_msg(port->serial->dev, |
1da177e4 LT |
193 | usb_rcvctrlpipe(port->serial->dev, 0), |
194 | KL5KUSB105A_SIO_POLL, | |
0c265f4e | 195 | USB_TYPE_VENDOR | USB_DIR_IN, |
1da177e4 LT |
196 | 0, /* value */ |
197 | 0, /* index */ | |
198 | status_buf, KLSI_STATUSBUF_LEN, | |
199 | 10000 | |
200 | ); | |
201 | if (rc < 0) | |
194343d9 GKH |
202 | dev_err(&port->dev, "Reading line status failed (error = %d)\n", |
203 | rc); | |
1da177e4 | 204 | else { |
bd2c7845 | 205 | status = get_unaligned_le16(status_buf); |
1da177e4 | 206 | |
c197a8db GKH |
207 | dev_info(&port->serial->dev->dev, "read status %x %x", |
208 | status_buf[0], status_buf[1]); | |
1da177e4 LT |
209 | |
210 | *line_state_p = klsi_105_status2linestate(status); | |
211 | } | |
abf492e7 JH |
212 | |
213 | kfree(status_buf); | |
0c265f4e | 214 | return rc; |
1da177e4 LT |
215 | } |
216 | ||
217 | ||
218 | /* | |
219 | * Driver's tty interface functions | |
220 | */ | |
221 | ||
99a6f73c | 222 | static int klsi_105_port_probe(struct usb_serial_port *port) |
1da177e4 LT |
223 | { |
224 | struct klsi_105_private *priv; | |
1da177e4 | 225 | |
99a6f73c JH |
226 | priv = kmalloc(sizeof(*priv), GFP_KERNEL); |
227 | if (!priv) | |
228 | return -ENOMEM; | |
1da177e4 | 229 | |
99a6f73c JH |
230 | /* set initial values for control structures */ |
231 | priv->cfg.pktlen = 5; | |
232 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
233 | priv->cfg.databits = kl5kusb105a_dtb_8; | |
234 | priv->cfg.unknown1 = 0; | |
235 | priv->cfg.unknown2 = 1; | |
1da177e4 | 236 | |
99a6f73c | 237 | priv->line_state = 0; |
1da177e4 | 238 | |
99a6f73c | 239 | spin_lock_init(&priv->lock); |
1da177e4 | 240 | |
99a6f73c | 241 | /* priv->termios is left uninitialized until port opening */ |
1da177e4 | 242 | |
99a6f73c | 243 | usb_set_serial_port_data(port, priv); |
0c265f4e | 244 | |
9306fff1 | 245 | return 0; |
ff8c195f | 246 | } |
1da177e4 | 247 | |
99a6f73c | 248 | static int klsi_105_port_remove(struct usb_serial_port *port) |
f9c99bb8 | 249 | { |
99a6f73c | 250 | struct klsi_105_private *priv; |
f9c99bb8 | 251 | |
99a6f73c JH |
252 | priv = usb_get_serial_port_data(port); |
253 | kfree(priv); | |
254 | ||
255 | return 0; | |
ff8c195f | 256 | } |
1da177e4 | 257 | |
a509a7e4 | 258 | static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
259 | { |
260 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
261 | int retval = 0; | |
262 | int rc; | |
263 | int i; | |
264 | unsigned long line_state; | |
abf492e7 | 265 | struct klsi_105_port_settings *cfg; |
1da177e4 LT |
266 | unsigned long flags; |
267 | ||
1da177e4 LT |
268 | /* Do a defined restart: |
269 | * Set up sane default baud rate and send the 'READ_ON' | |
0c265f4e | 270 | * vendor command. |
1da177e4 LT |
271 | * FIXME: set modem line control (how?) |
272 | * Then read the modem line control and store values in | |
273 | * priv->line_state. | |
274 | */ | |
abf492e7 JH |
275 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
276 | if (!cfg) { | |
277 | dev_err(&port->dev, "%s - out of memory for config buffer.\n", | |
278 | __func__); | |
279 | return -ENOMEM; | |
280 | } | |
281 | cfg->pktlen = 5; | |
282 | cfg->baudrate = kl5kusb105a_sio_b9600; | |
283 | cfg->databits = kl5kusb105a_dtb_8; | |
284 | cfg->unknown1 = 0; | |
285 | cfg->unknown2 = 1; | |
286 | klsi_105_chg_port_settings(port, cfg); | |
0c265f4e | 287 | |
1da177e4 | 288 | /* set up termios structure */ |
0c265f4e | 289 | spin_lock_irqsave(&priv->lock, flags); |
adc8d746 AC |
290 | priv->termios.c_iflag = tty->termios.c_iflag; |
291 | priv->termios.c_oflag = tty->termios.c_oflag; | |
292 | priv->termios.c_cflag = tty->termios.c_cflag; | |
293 | priv->termios.c_lflag = tty->termios.c_lflag; | |
0c265f4e | 294 | for (i = 0; i < NCCS; i++) |
adc8d746 | 295 | priv->termios.c_cc[i] = tty->termios.c_cc[i]; |
abf492e7 JH |
296 | priv->cfg.pktlen = cfg->pktlen; |
297 | priv->cfg.baudrate = cfg->baudrate; | |
298 | priv->cfg.databits = cfg->databits; | |
299 | priv->cfg.unknown1 = cfg->unknown1; | |
300 | priv->cfg.unknown2 = cfg->unknown2; | |
0c265f4e | 301 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
302 | |
303 | /* READ_ON and urb submission */ | |
60b3013c | 304 | rc = usb_serial_generic_open(tty, port); |
1da177e4 | 305 | if (rc) { |
1da177e4 LT |
306 | retval = rc; |
307 | goto exit; | |
308 | } | |
309 | ||
310 | rc = usb_control_msg(port->serial->dev, | |
0c265f4e | 311 | usb_sndctrlpipe(port->serial->dev, 0), |
1da177e4 LT |
312 | KL5KUSB105A_SIO_CONFIGURE, |
313 | USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE, | |
314 | KL5KUSB105A_SIO_CONFIGURE_READ_ON, | |
315 | 0, /* index */ | |
316 | NULL, | |
317 | 0, | |
318 | KLSI_TIMEOUT); | |
319 | if (rc < 0) { | |
194343d9 | 320 | dev_err(&port->dev, "Enabling read failed (error = %d)\n", rc); |
1da177e4 | 321 | retval = rc; |
0c265f4e | 322 | } else |
1ad7604f | 323 | dev_dbg(&port->dev, "%s - enabled reading\n", __func__); |
1da177e4 LT |
324 | |
325 | rc = klsi_105_get_line_state(port, &line_state); | |
326 | if (rc >= 0) { | |
0c265f4e | 327 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 328 | priv->line_state = line_state; |
0c265f4e | 329 | spin_unlock_irqrestore(&priv->lock, flags); |
1ad7604f | 330 | dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state); |
1da177e4 LT |
331 | retval = 0; |
332 | } else | |
333 | retval = rc; | |
334 | ||
335 | exit: | |
abf492e7 | 336 | kfree(cfg); |
1da177e4 | 337 | return retval; |
ff8c195f | 338 | } |
1da177e4 | 339 | |
335f8514 | 340 | static void klsi_105_close(struct usb_serial_port *port) |
1da177e4 | 341 | { |
1da177e4 LT |
342 | int rc; |
343 | ||
3edbc986 ON |
344 | mutex_lock(&port->serial->disc_mutex); |
345 | if (!port->serial->disconnected) { | |
346 | /* send READ_OFF */ | |
0c265f4e AC |
347 | rc = usb_control_msg(port->serial->dev, |
348 | usb_sndctrlpipe(port->serial->dev, 0), | |
349 | KL5KUSB105A_SIO_CONFIGURE, | |
350 | USB_TYPE_VENDOR | USB_DIR_OUT, | |
351 | KL5KUSB105A_SIO_CONFIGURE_READ_OFF, | |
352 | 0, /* index */ | |
353 | NULL, 0, | |
354 | KLSI_TIMEOUT); | |
3edbc986 | 355 | if (rc < 0) |
194343d9 GKH |
356 | dev_err(&port->dev, |
357 | "Disabling read failed (error = %d)\n", rc); | |
3edbc986 ON |
358 | } |
359 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
360 | |
361 | /* shutdown our bulk reads and writes */ | |
60b3013c JH |
362 | usb_serial_generic_close(port); |
363 | ||
1da177e4 LT |
364 | /* wgg - do I need this? I think so. */ |
365 | usb_kill_urb(port->interrupt_in_urb); | |
ff8c195f | 366 | } |
1da177e4 LT |
367 | |
368 | /* We need to write a complete 64-byte data block and encode the | |
0c265f4e | 369 | * number actually sent in the first double-byte, LSB-order. That |
1da177e4 LT |
370 | * leaves at most 62 bytes of payload. |
371 | */ | |
60b3013c JH |
372 | #define KLSI_HDR_LEN 2 |
373 | static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, | |
374 | void *dest, size_t size) | |
1da177e4 | 375 | { |
60b3013c JH |
376 | unsigned char *buf = dest; |
377 | int count; | |
17c1b35a | 378 | |
60b3013c JH |
379 | count = kfifo_out_locked(&port->write_fifo, buf + KLSI_HDR_LEN, size, |
380 | &port->lock); | |
381 | put_unaligned_le16(count, buf); | |
1da177e4 | 382 | |
60b3013c | 383 | return count + KLSI_HDR_LEN; |
ff8c195f | 384 | } |
1da177e4 | 385 | |
60b3013c JH |
386 | /* The data received is preceded by a length double-byte in LSB-first order. |
387 | */ | |
388 | static void klsi_105_process_read_urb(struct urb *urb) | |
1da177e4 | 389 | { |
cdc97792 | 390 | struct usb_serial_port *port = urb->context; |
1da177e4 | 391 | unsigned char *data = urb->transfer_buffer; |
60b3013c | 392 | unsigned len; |
1da177e4 | 393 | |
60b3013c JH |
394 | /* empty urbs seem to happen, we ignore them */ |
395 | if (!urb->actual_length) | |
396 | return; | |
1da177e4 | 397 | |
60b3013c | 398 | if (urb->actual_length <= KLSI_HDR_LEN) { |
1ad7604f | 399 | dev_dbg(&port->dev, "%s - malformed packet\n", __func__); |
17c1b35a GKH |
400 | return; |
401 | } | |
402 | ||
60b3013c JH |
403 | len = get_unaligned_le16(data); |
404 | if (len > urb->actual_length - KLSI_HDR_LEN) { | |
1ad7604f | 405 | dev_dbg(&port->dev, "%s - packet length mismatch\n", __func__); |
60b3013c | 406 | len = urb->actual_length - KLSI_HDR_LEN; |
1da177e4 | 407 | } |
60b3013c | 408 | |
05c7cd39 | 409 | tty_insert_flip_string(&port->port, data + KLSI_HDR_LEN, len); |
2e124b4a | 410 | tty_flip_buffer_push(&port->port); |
ff8c195f | 411 | } |
1da177e4 | 412 | |
0c265f4e AC |
413 | static void klsi_105_set_termios(struct tty_struct *tty, |
414 | struct usb_serial_port *port, | |
415 | struct ktermios *old_termios) | |
1da177e4 LT |
416 | { |
417 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
1ad7604f | 418 | struct device *dev = &port->dev; |
adc8d746 | 419 | unsigned int iflag = tty->termios.c_iflag; |
1da177e4 | 420 | unsigned int old_iflag = old_termios->c_iflag; |
adc8d746 | 421 | unsigned int cflag = tty->termios.c_cflag; |
1da177e4 | 422 | unsigned int old_cflag = old_termios->c_cflag; |
abf492e7 | 423 | struct klsi_105_port_settings *cfg; |
1da177e4 | 424 | unsigned long flags; |
a5b6f60c | 425 | speed_t baud; |
0c265f4e | 426 | |
abf492e7 JH |
427 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
428 | if (!cfg) { | |
1ad7604f | 429 | dev_err(dev, "%s - out of memory for config buffer.\n", __func__); |
abf492e7 JH |
430 | return; |
431 | } | |
432 | ||
1da177e4 | 433 | /* lock while we are modifying the settings */ |
0c265f4e AC |
434 | spin_lock_irqsave(&priv->lock, flags); |
435 | ||
1da177e4 LT |
436 | /* |
437 | * Update baud rate | |
438 | */ | |
a5b6f60c AC |
439 | baud = tty_get_baud_rate(tty); |
440 | ||
0c265f4e AC |
441 | if ((cflag & CBAUD) != (old_cflag & CBAUD)) { |
442 | /* reassert DTR and (maybe) RTS on transition from B0 */ | |
443 | if ((old_cflag & CBAUD) == B0) { | |
1ad7604f | 444 | dev_dbg(dev, "%s: baud was B0\n", __func__); |
1da177e4 LT |
445 | #if 0 |
446 | priv->control_state |= TIOCM_DTR; | |
447 | /* don't set RTS if using hardware flow control */ | |
0c265f4e | 448 | if (!(old_cflag & CRTSCTS)) |
1da177e4 | 449 | priv->control_state |= TIOCM_RTS; |
1da177e4 LT |
450 | mct_u232_set_modem_ctrl(serial, priv->control_state); |
451 | #endif | |
452 | } | |
a5b6f60c | 453 | } |
0c265f4e AC |
454 | switch (baud) { |
455 | case 0: /* handled below */ | |
456 | break; | |
457 | case 1200: | |
458 | priv->cfg.baudrate = kl5kusb105a_sio_b1200; | |
459 | break; | |
460 | case 2400: | |
461 | priv->cfg.baudrate = kl5kusb105a_sio_b2400; | |
462 | break; | |
463 | case 4800: | |
464 | priv->cfg.baudrate = kl5kusb105a_sio_b4800; | |
465 | break; | |
466 | case 9600: | |
467 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
468 | break; | |
469 | case 19200: | |
470 | priv->cfg.baudrate = kl5kusb105a_sio_b19200; | |
471 | break; | |
472 | case 38400: | |
473 | priv->cfg.baudrate = kl5kusb105a_sio_b38400; | |
474 | break; | |
475 | case 57600: | |
476 | priv->cfg.baudrate = kl5kusb105a_sio_b57600; | |
477 | break; | |
478 | case 115200: | |
479 | priv->cfg.baudrate = kl5kusb105a_sio_b115200; | |
480 | break; | |
481 | default: | |
1ad7604f GKH |
482 | dev_dbg(dev, "KLSI USB->Serial converter: unsupported baudrate request, using default of 9600"); |
483 | priv->cfg.baudrate = kl5kusb105a_sio_b9600; | |
0c265f4e AC |
484 | baud = 9600; |
485 | break; | |
a5b6f60c | 486 | } |
0c265f4e | 487 | if ((cflag & CBAUD) == B0) { |
1ad7604f | 488 | dev_dbg(dev, "%s: baud is B0\n", __func__); |
a5b6f60c AC |
489 | /* Drop RTS and DTR */ |
490 | /* maybe this should be simulated by sending read | |
491 | * disable and read enable messages? | |
492 | */ | |
493 | ; | |
1da177e4 | 494 | #if 0 |
a5b6f60c | 495 | priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); |
0c265f4e | 496 | mct_u232_set_modem_ctrl(serial, priv->control_state); |
1da177e4 | 497 | #endif |
1da177e4 | 498 | } |
a5b6f60c | 499 | tty_encode_baud_rate(tty, baud, baud); |
1da177e4 LT |
500 | |
501 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { | |
502 | /* set the number of data bits */ | |
503 | switch (cflag & CSIZE) { | |
504 | case CS5: | |
1ad7604f | 505 | dev_dbg(dev, "%s - 5 bits/byte not supported\n", __func__); |
0c265f4e | 506 | spin_unlock_irqrestore(&priv->lock, flags); |
abf492e7 | 507 | goto err; |
1da177e4 | 508 | case CS6: |
1ad7604f | 509 | dev_dbg(dev, "%s - 6 bits/byte not supported\n", __func__); |
0c265f4e | 510 | spin_unlock_irqrestore(&priv->lock, flags); |
abf492e7 | 511 | goto err; |
1da177e4 LT |
512 | case CS7: |
513 | priv->cfg.databits = kl5kusb105a_dtb_7; | |
514 | break; | |
515 | case CS8: | |
516 | priv->cfg.databits = kl5kusb105a_dtb_8; | |
517 | break; | |
518 | default: | |
1ad7604f | 519 | dev_err(dev, "CSIZE was not CS5-CS8, using default of 8\n"); |
1da177e4 LT |
520 | priv->cfg.databits = kl5kusb105a_dtb_8; |
521 | break; | |
522 | } | |
523 | } | |
524 | ||
525 | /* | |
526 | * Update line control register (LCR) | |
527 | */ | |
528 | if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD)) | |
0c265f4e | 529 | || (cflag & CSTOPB) != (old_cflag & CSTOPB)) { |
a5b6f60c | 530 | /* Not currently supported */ |
adc8d746 | 531 | tty->termios.c_cflag &= ~(PARENB|PARODD|CSTOPB); |
1da177e4 LT |
532 | #if 0 |
533 | priv->last_lcr = 0; | |
534 | ||
535 | /* set the parity */ | |
536 | if (cflag & PARENB) | |
537 | priv->last_lcr |= (cflag & PARODD) ? | |
538 | MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN; | |
539 | else | |
540 | priv->last_lcr |= MCT_U232_PARITY_NONE; | |
541 | ||
542 | /* set the number of stop bits */ | |
543 | priv->last_lcr |= (cflag & CSTOPB) ? | |
544 | MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1; | |
545 | ||
546 | mct_u232_set_line_ctrl(serial, priv->last_lcr); | |
547 | #endif | |
548 | ; | |
549 | } | |
1da177e4 LT |
550 | /* |
551 | * Set flow control: well, I do not really now how to handle DTR/RTS. | |
552 | * Just do what we have seen with SniffUSB on Win98. | |
553 | */ | |
0c265f4e | 554 | if ((iflag & IXOFF) != (old_iflag & IXOFF) |
1da177e4 | 555 | || (iflag & IXON) != (old_iflag & IXON) |
0c265f4e | 556 | || (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) { |
a5b6f60c | 557 | /* Not currently supported */ |
adc8d746 | 558 | tty->termios.c_cflag &= ~CRTSCTS; |
1da177e4 LT |
559 | /* Drop DTR/RTS if no flow control otherwise assert */ |
560 | #if 0 | |
0c265f4e | 561 | if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS)) |
1da177e4 LT |
562 | priv->control_state |= TIOCM_DTR | TIOCM_RTS; |
563 | else | |
564 | priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); | |
565 | mct_u232_set_modem_ctrl(serial, priv->control_state); | |
566 | #endif | |
567 | ; | |
568 | } | |
abf492e7 | 569 | memcpy(cfg, &priv->cfg, sizeof(*cfg)); |
0c265f4e AC |
570 | spin_unlock_irqrestore(&priv->lock, flags); |
571 | ||
1da177e4 | 572 | /* now commit changes to device */ |
abf492e7 JH |
573 | klsi_105_chg_port_settings(port, cfg); |
574 | err: | |
575 | kfree(cfg); | |
ff8c195f | 576 | } |
1da177e4 LT |
577 | |
578 | #if 0 | |
0c265f4e | 579 | static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) |
1da177e4 | 580 | { |
95da310e | 581 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 582 | struct usb_serial *serial = port->serial; |
0c265f4e AC |
583 | struct mct_u232_private *priv = |
584 | (struct mct_u232_private *)port->private; | |
1da177e4 LT |
585 | unsigned char lcr = priv->last_lcr; |
586 | ||
1ad7604f | 587 | dev_dbg(&port->dev, "%s - state=%d\n", __func__, break_state); |
1da177e4 | 588 | |
6b447f04 | 589 | /* LOCKING */ |
1da177e4 LT |
590 | if (break_state) |
591 | lcr |= MCT_U232_SET_BREAK; | |
592 | ||
593 | mct_u232_set_line_ctrl(serial, lcr); | |
ff8c195f | 594 | } |
1da177e4 LT |
595 | #endif |
596 | ||
60b33c13 | 597 | static int klsi_105_tiocmget(struct tty_struct *tty) |
1da177e4 | 598 | { |
95da310e | 599 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
600 | struct klsi_105_private *priv = usb_get_serial_port_data(port); |
601 | unsigned long flags; | |
602 | int rc; | |
603 | unsigned long line_state; | |
1da177e4 LT |
604 | |
605 | rc = klsi_105_get_line_state(port, &line_state); | |
606 | if (rc < 0) { | |
194343d9 GKH |
607 | dev_err(&port->dev, |
608 | "Reading line control failed (error = %d)\n", rc); | |
1da177e4 LT |
609 | /* better return value? EAGAIN? */ |
610 | return rc; | |
611 | } | |
612 | ||
0c265f4e | 613 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 614 | priv->line_state = line_state; |
0c265f4e | 615 | spin_unlock_irqrestore(&priv->lock, flags); |
1ad7604f | 616 | dev_dbg(&port->dev, "%s - read line state 0x%lx\n", __func__, line_state); |
1da177e4 LT |
617 | return (int)line_state; |
618 | } | |
619 | ||
20b9d177 | 620 | static int klsi_105_tiocmset(struct tty_struct *tty, |
0c265f4e | 621 | unsigned int set, unsigned int clear) |
1da177e4 LT |
622 | { |
623 | int retval = -EINVAL; | |
0c265f4e | 624 | |
1da177e4 LT |
625 | /* if this ever gets implemented, it should be done something like this: |
626 | struct usb_serial *serial = port->serial; | |
627 | struct klsi_105_private *priv = usb_get_serial_port_data(port); | |
628 | unsigned long flags; | |
629 | int control; | |
630 | ||
631 | spin_lock_irqsave (&priv->lock, flags); | |
632 | if (set & TIOCM_RTS) | |
633 | priv->control_state |= TIOCM_RTS; | |
634 | if (set & TIOCM_DTR) | |
635 | priv->control_state |= TIOCM_DTR; | |
636 | if (clear & TIOCM_RTS) | |
637 | priv->control_state &= ~TIOCM_RTS; | |
638 | if (clear & TIOCM_DTR) | |
639 | priv->control_state &= ~TIOCM_DTR; | |
640 | control = priv->control_state; | |
641 | spin_unlock_irqrestore (&priv->lock, flags); | |
642 | retval = mct_u232_set_modem_ctrl(serial, control); | |
643 | */ | |
644 | return retval; | |
645 | } | |
1da177e4 | 646 | |
68e24113 | 647 | module_usb_serial_driver(serial_drivers, id_table); |
1da177e4 | 648 | |
0c265f4e AC |
649 | MODULE_AUTHOR(DRIVER_AUTHOR); |
650 | MODULE_DESCRIPTION(DRIVER_DESC); | |
651 | MODULE_LICENSE("GPL"); |