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1da177e4 LT |
1 | /*****************************************************************************/ |
2 | ||
3 | /* | |
4 | * uss720.c -- USS720 USB Parport Cable. | |
5 | * | |
6 | * Copyright (C) 1999 | |
7 | * Thomas Sailer (sailer@ife.ee.ethz.ch) | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | * | |
23 | * Based on parport_pc.c | |
24 | * | |
25 | * History: | |
26 | * 0.1 04.08.99 Created | |
27 | * 0.2 07.08.99 Some fixes mainly suggested by Tim Waugh | |
28 | * Interrupt handling currently disabled because | |
29 | * usb_request_irq crashes somewhere within ohci.c | |
30 | * for no apparent reason (that is for me, anyway) | |
31 | * ECP currently untested | |
32 | * 0.3 10.08.99 fixing merge errors | |
33 | * 0.4 13.08.99 Added Vendor/Product ID of Brad Hard's cable | |
34 | * 0.5 20.09.99 usb_control_msg wrapper used | |
35 | * Nov01.00 usb_device_table support by Adam J. Richter | |
36 | * 08.04.01 Identify version on module load. gb | |
37 | * | |
38 | */ | |
39 | ||
40 | /*****************************************************************************/ | |
41 | ||
42 | #include <linux/module.h> | |
43 | #include <linux/socket.h> | |
44 | #include <linux/parport.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/usb.h> | |
47 | #include <linux/delay.h> | |
48 | ||
49 | /* | |
50 | * Version Information | |
51 | */ | |
52 | #define DRIVER_VERSION "v0.5" | |
53 | #define DRIVER_AUTHOR "Thomas M. Sailer, sailer@ife.ee.ethz.ch" | |
54 | #define DRIVER_DESC "USB Parport Cable driver for Cables using the Lucent Technologies USS720 Chip" | |
55 | ||
56 | /* --------------------------------------------------------------------- */ | |
57 | ||
58 | struct parport_uss720_private { | |
59 | struct usb_device *usbdev; | |
60 | void *irqhandle; | |
61 | unsigned int irqpipe; | |
62 | unsigned char reg[7]; /* USB registers */ | |
63 | }; | |
64 | ||
65 | /* --------------------------------------------------------------------- */ | |
66 | ||
67 | static int get_1284_register(struct parport *pp, unsigned char reg, unsigned char *val) | |
68 | { | |
69 | struct parport_uss720_private *priv = pp->private_data; | |
70 | struct usb_device *usbdev = priv->usbdev; | |
71 | static const unsigned char regindex[9] = { | |
72 | 4, 0, 1, 5, 5, 0, 2, 3, 6 | |
73 | }; | |
74 | int ret; | |
75 | ||
76 | if (!usbdev) | |
77 | return -1; | |
78 | ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev,0), 3, 0xc0, ((unsigned int)reg) << 8, 0, priv->reg, 7, 1000); | |
79 | if (ret != 7) { | |
80 | printk(KERN_DEBUG "uss720: get_1284_register(%d) failed, status 0x%x expected 7\n", | |
81 | (unsigned int)reg, ret); | |
82 | ret = -1; | |
83 | } else { | |
84 | #if 0 | |
85 | printk(KERN_DEBUG "uss720: get_1284_register(%d) return %02x %02x %02x %02x %02x %02x %02x\n", | |
86 | (unsigned int)reg, (unsigned int)priv->reg[0], (unsigned int)priv->reg[1], | |
87 | (unsigned int)priv->reg[2], (unsigned int)priv->reg[3], (unsigned int)priv->reg[4], | |
88 | (unsigned int)priv->reg[5], (unsigned int)priv->reg[6]); | |
89 | #endif | |
90 | /* if nAck interrupts are enabled and we have an interrupt, call the interrupt procedure */ | |
91 | if (priv->reg[2] & priv->reg[1] & 0x10) | |
92 | parport_generic_irq(0, pp, NULL); | |
93 | ret = 0; | |
94 | } | |
95 | if (val) | |
96 | *val = priv->reg[(reg >= 9) ? 0 : regindex[reg]]; | |
97 | return ret; | |
98 | } | |
99 | ||
100 | static int set_1284_register(struct parport *pp, unsigned char reg, unsigned char val) | |
101 | { | |
102 | struct parport_uss720_private *priv = pp->private_data; | |
103 | struct usb_device *usbdev = priv->usbdev; | |
104 | int ret; | |
105 | ||
106 | if (!usbdev) | |
107 | return -1; | |
108 | ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev,0), 4, 0x40, (((unsigned int)reg) << 8) | val, 0, NULL, 0, 1000); | |
109 | if (ret) { | |
110 | printk(KERN_DEBUG "uss720: set_1284_register(%u,0x%02x) failed, status 0x%x\n", | |
111 | (unsigned int)reg, (unsigned int)val, ret); | |
112 | } else { | |
113 | #if 0 | |
114 | printk(KERN_DEBUG "uss720: set_1284_register(%u,0x%02x)\n", | |
115 | (unsigned int)reg, (unsigned int)val); | |
116 | #endif | |
117 | } | |
118 | return ret; | |
119 | } | |
120 | ||
121 | /* --------------------------------------------------------------------- */ | |
122 | ||
123 | /* ECR modes */ | |
124 | #define ECR_SPP 00 | |
125 | #define ECR_PS2 01 | |
126 | #define ECR_PPF 02 | |
127 | #define ECR_ECP 03 | |
128 | #define ECR_EPP 04 | |
129 | ||
130 | /* Safely change the mode bits in the ECR */ | |
131 | static int change_mode(struct parport *pp, int m) | |
132 | { | |
133 | struct parport_uss720_private *priv = pp->private_data; | |
134 | int mode; | |
135 | ||
136 | if (get_1284_register(pp, 6, NULL)) | |
137 | return -EIO; | |
138 | /* Bits <7:5> contain the mode. */ | |
139 | mode = (priv->reg[2] >> 5) & 0x7; | |
140 | if (mode == m) | |
141 | return 0; | |
142 | /* We have to go through mode 000 or 001 */ | |
143 | if (mode > ECR_PS2 && m > ECR_PS2) | |
144 | if (change_mode(pp, ECR_PS2)) | |
145 | return -EIO; | |
146 | ||
147 | if (m <= ECR_PS2 && !(priv->reg[1] & 0x20)) { | |
148 | /* This mode resets the FIFO, so we may | |
149 | * have to wait for it to drain first. */ | |
150 | unsigned long expire = jiffies + pp->physport->cad->timeout; | |
151 | switch (mode) { | |
152 | case ECR_PPF: /* Parallel Port FIFO mode */ | |
153 | case ECR_ECP: /* ECP Parallel Port mode */ | |
154 | /* Poll slowly. */ | |
155 | for (;;) { | |
156 | if (get_1284_register(pp, 6, NULL)) | |
157 | return -EIO; | |
158 | if (priv->reg[2] & 0x01) | |
159 | break; | |
160 | if (time_after_eq (jiffies, expire)) | |
161 | /* The FIFO is stuck. */ | |
162 | return -EBUSY; | |
163 | msleep_interruptible(10); | |
164 | if (signal_pending (current)) | |
165 | break; | |
166 | } | |
167 | } | |
168 | } | |
169 | /* Set the mode. */ | |
170 | if (set_1284_register(pp, 6, m << 5)) | |
171 | return -EIO; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Clear TIMEOUT BIT in EPP MODE | |
177 | */ | |
178 | static int clear_epp_timeout(struct parport *pp) | |
179 | { | |
180 | unsigned char stat; | |
181 | ||
182 | if (get_1284_register(pp, 1, &stat)) | |
183 | return 1; | |
184 | return stat & 1; | |
185 | } | |
186 | ||
187 | /* | |
188 | * Access functions. | |
189 | */ | |
190 | #if 0 | |
191 | static int uss720_irq(int usbstatus, void *buffer, int len, void *dev_id) | |
192 | { | |
193 | struct parport *pp = (struct parport *)dev_id; | |
194 | struct parport_uss720_private *priv = pp->private_data; | |
195 | ||
196 | if (usbstatus != 0 || len < 4 || !buffer) | |
197 | return 1; | |
198 | memcpy(priv->reg, buffer, 4); | |
199 | /* if nAck interrupts are enabled and we have an interrupt, call the interrupt procedure */ | |
200 | if (priv->reg[2] & priv->reg[1] & 0x10) | |
201 | parport_generic_irq(0, pp, NULL); | |
202 | return 1; | |
203 | } | |
204 | #endif | |
205 | ||
206 | static void parport_uss720_write_data(struct parport *pp, unsigned char d) | |
207 | { | |
208 | set_1284_register(pp, 0, d); | |
209 | } | |
210 | ||
211 | static unsigned char parport_uss720_read_data(struct parport *pp) | |
212 | { | |
213 | unsigned char ret; | |
214 | ||
215 | if (get_1284_register(pp, 0, &ret)) | |
216 | return 0; | |
217 | return ret; | |
218 | } | |
219 | ||
220 | static void parport_uss720_write_control(struct parport *pp, unsigned char d) | |
221 | { | |
222 | struct parport_uss720_private *priv = pp->private_data; | |
223 | ||
224 | d = (d & 0xf) | (priv->reg[1] & 0xf0); | |
225 | if (set_1284_register(pp, 2, d)) | |
226 | return; | |
227 | priv->reg[1] = d; | |
228 | } | |
229 | ||
230 | static unsigned char parport_uss720_read_control(struct parport *pp) | |
231 | { | |
232 | struct parport_uss720_private *priv = pp->private_data; | |
233 | return priv->reg[1] & 0xf; /* Use soft copy */ | |
234 | } | |
235 | ||
236 | static unsigned char parport_uss720_frob_control(struct parport *pp, unsigned char mask, unsigned char val) | |
237 | { | |
238 | struct parport_uss720_private *priv = pp->private_data; | |
239 | unsigned char d; | |
240 | ||
241 | mask &= 0x0f; | |
242 | val &= 0x0f; | |
243 | d = (priv->reg[1] & (~mask)) ^ val; | |
244 | if (set_1284_register(pp, 2, d)) | |
245 | return 0; | |
246 | priv->reg[1] = d; | |
247 | return d & 0xf; | |
248 | } | |
249 | ||
250 | static unsigned char parport_uss720_read_status(struct parport *pp) | |
251 | { | |
252 | unsigned char ret; | |
253 | ||
254 | if (get_1284_register(pp, 1, &ret)) | |
255 | return 0; | |
256 | return ret & 0xf8; | |
257 | } | |
258 | ||
259 | static void parport_uss720_disable_irq(struct parport *pp) | |
260 | { | |
261 | struct parport_uss720_private *priv = pp->private_data; | |
262 | unsigned char d; | |
263 | ||
264 | d = priv->reg[1] & ~0x10; | |
265 | if (set_1284_register(pp, 2, d)) | |
266 | return; | |
267 | priv->reg[1] = d; | |
268 | } | |
269 | ||
270 | static void parport_uss720_enable_irq(struct parport *pp) | |
271 | { | |
272 | struct parport_uss720_private *priv = pp->private_data; | |
273 | unsigned char d; | |
274 | ||
275 | d = priv->reg[1] | 0x10; | |
276 | if (set_1284_register(pp, 2, d)) | |
277 | return; | |
278 | priv->reg[1] = d; | |
279 | } | |
280 | ||
281 | static void parport_uss720_data_forward (struct parport *pp) | |
282 | { | |
283 | struct parport_uss720_private *priv = pp->private_data; | |
284 | unsigned char d; | |
285 | ||
286 | d = priv->reg[1] & ~0x20; | |
287 | if (set_1284_register(pp, 2, d)) | |
288 | return; | |
289 | priv->reg[1] = d; | |
290 | } | |
291 | ||
292 | static void parport_uss720_data_reverse (struct parport *pp) | |
293 | { | |
294 | struct parport_uss720_private *priv = pp->private_data; | |
295 | unsigned char d; | |
296 | ||
297 | d = priv->reg[1] | 0x20; | |
298 | if (set_1284_register(pp, 2, d)) | |
299 | return; | |
300 | priv->reg[1] = d; | |
301 | } | |
302 | ||
303 | static void parport_uss720_init_state(struct pardevice *dev, struct parport_state *s) | |
304 | { | |
305 | s->u.pc.ctr = 0xc | (dev->irq_func ? 0x10 : 0x0); | |
306 | s->u.pc.ecr = 0x24; | |
307 | } | |
308 | ||
309 | static void parport_uss720_save_state(struct parport *pp, struct parport_state *s) | |
310 | { | |
311 | struct parport_uss720_private *priv = pp->private_data; | |
312 | ||
313 | if (get_1284_register(pp, 2, NULL)) | |
314 | return; | |
315 | s->u.pc.ctr = priv->reg[1]; | |
316 | s->u.pc.ecr = priv->reg[2]; | |
317 | } | |
318 | ||
319 | static void parport_uss720_restore_state(struct parport *pp, struct parport_state *s) | |
320 | { | |
321 | set_1284_register(pp, 2, s->u.pc.ctr); | |
322 | set_1284_register(pp, 6, s->u.pc.ecr); | |
323 | get_1284_register(pp, 2, NULL); | |
324 | } | |
325 | ||
326 | static size_t parport_uss720_epp_read_data(struct parport *pp, void *buf, size_t length, int flags) | |
327 | { | |
328 | struct parport_uss720_private *priv = pp->private_data; | |
329 | size_t got = 0; | |
330 | ||
331 | if (change_mode(pp, ECR_EPP)) | |
332 | return 0; | |
333 | for (; got < length; got++) { | |
334 | if (get_1284_register(pp, 4, (char *)buf)) | |
335 | break; | |
336 | buf++; | |
337 | if (priv->reg[0] & 0x01) { | |
338 | clear_epp_timeout(pp); | |
339 | break; | |
340 | } | |
341 | } | |
342 | change_mode(pp, ECR_PS2); | |
343 | return got; | |
344 | } | |
345 | ||
346 | static size_t parport_uss720_epp_write_data(struct parport *pp, const void *buf, size_t length, int flags) | |
347 | { | |
348 | #if 0 | |
349 | struct parport_uss720_private *priv = pp->private_data; | |
350 | size_t written = 0; | |
351 | ||
352 | if (change_mode(pp, ECR_EPP)) | |
353 | return 0; | |
354 | for (; written < length; written++) { | |
355 | if (set_1284_register(pp, 4, (char *)buf)) | |
356 | break; | |
357 | ((char*)buf)++; | |
358 | if (get_1284_register(pp, 1, NULL)) | |
359 | break; | |
360 | if (priv->reg[0] & 0x01) { | |
361 | clear_epp_timeout(pp); | |
362 | break; | |
363 | } | |
364 | } | |
365 | change_mode(pp, ECR_PS2); | |
366 | return written; | |
367 | #else | |
368 | struct parport_uss720_private *priv = pp->private_data; | |
369 | struct usb_device *usbdev = priv->usbdev; | |
370 | int rlen; | |
371 | int i; | |
372 | ||
373 | if (!usbdev) | |
374 | return 0; | |
375 | if (change_mode(pp, ECR_EPP)) | |
376 | return 0; | |
377 | i = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 1), (void *)buf, length, &rlen, 20000); | |
378 | if (i) | |
379 | printk(KERN_ERR "uss720: sendbulk ep 1 buf %p len %Zu rlen %u\n", buf, length, rlen); | |
380 | change_mode(pp, ECR_PS2); | |
381 | return rlen; | |
382 | #endif | |
383 | } | |
384 | ||
385 | static size_t parport_uss720_epp_read_addr(struct parport *pp, void *buf, size_t length, int flags) | |
386 | { | |
387 | struct parport_uss720_private *priv = pp->private_data; | |
388 | size_t got = 0; | |
389 | ||
390 | if (change_mode(pp, ECR_EPP)) | |
391 | return 0; | |
392 | for (; got < length; got++) { | |
393 | if (get_1284_register(pp, 3, (char *)buf)) | |
394 | break; | |
395 | buf++; | |
396 | if (priv->reg[0] & 0x01) { | |
397 | clear_epp_timeout(pp); | |
398 | break; | |
399 | } | |
400 | } | |
401 | change_mode(pp, ECR_PS2); | |
402 | return got; | |
403 | } | |
404 | ||
405 | static size_t parport_uss720_epp_write_addr(struct parport *pp, const void *buf, size_t length, int flags) | |
406 | { | |
407 | struct parport_uss720_private *priv = pp->private_data; | |
408 | size_t written = 0; | |
409 | ||
410 | if (change_mode(pp, ECR_EPP)) | |
411 | return 0; | |
412 | for (; written < length; written++) { | |
413 | if (set_1284_register(pp, 3, *(char *)buf)) | |
414 | break; | |
415 | buf++; | |
416 | if (get_1284_register(pp, 1, NULL)) | |
417 | break; | |
418 | if (priv->reg[0] & 0x01) { | |
419 | clear_epp_timeout(pp); | |
420 | break; | |
421 | } | |
422 | } | |
423 | change_mode(pp, ECR_PS2); | |
424 | return written; | |
425 | } | |
426 | ||
427 | static size_t parport_uss720_ecp_write_data(struct parport *pp, const void *buffer, size_t len, int flags) | |
428 | { | |
429 | struct parport_uss720_private *priv = pp->private_data; | |
430 | struct usb_device *usbdev = priv->usbdev; | |
431 | int rlen; | |
432 | int i; | |
433 | ||
434 | if (!usbdev) | |
435 | return 0; | |
436 | if (change_mode(pp, ECR_ECP)) | |
437 | return 0; | |
438 | i = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 1), (void *)buffer, len, &rlen, 20000); | |
439 | if (i) | |
440 | printk(KERN_ERR "uss720: sendbulk ep 1 buf %p len %Zu rlen %u\n", buffer, len, rlen); | |
441 | change_mode(pp, ECR_PS2); | |
442 | return rlen; | |
443 | } | |
444 | ||
445 | static size_t parport_uss720_ecp_read_data(struct parport *pp, void *buffer, size_t len, int flags) | |
446 | { | |
447 | struct parport_uss720_private *priv = pp->private_data; | |
448 | struct usb_device *usbdev = priv->usbdev; | |
449 | int rlen; | |
450 | int i; | |
451 | ||
452 | if (!usbdev) | |
453 | return 0; | |
454 | if (change_mode(pp, ECR_ECP)) | |
455 | return 0; | |
456 | i = usb_bulk_msg(usbdev, usb_rcvbulkpipe(usbdev, 2), buffer, len, &rlen, 20000); | |
457 | if (i) | |
458 | printk(KERN_ERR "uss720: recvbulk ep 2 buf %p len %Zu rlen %u\n", buffer, len, rlen); | |
459 | change_mode(pp, ECR_PS2); | |
460 | return rlen; | |
461 | } | |
462 | ||
463 | static size_t parport_uss720_ecp_write_addr(struct parport *pp, const void *buffer, size_t len, int flags) | |
464 | { | |
465 | size_t written = 0; | |
466 | ||
467 | if (change_mode(pp, ECR_ECP)) | |
468 | return 0; | |
469 | for (; written < len; written++) { | |
470 | if (set_1284_register(pp, 5, *(char *)buffer)) | |
471 | break; | |
472 | buffer++; | |
473 | } | |
474 | change_mode(pp, ECR_PS2); | |
475 | return written; | |
476 | } | |
477 | ||
478 | static size_t parport_uss720_write_compat(struct parport *pp, const void *buffer, size_t len, int flags) | |
479 | { | |
480 | struct parport_uss720_private *priv = pp->private_data; | |
481 | struct usb_device *usbdev = priv->usbdev; | |
482 | int rlen; | |
483 | int i; | |
484 | ||
485 | if (!usbdev) | |
486 | return 0; | |
487 | if (change_mode(pp, ECR_PPF)) | |
488 | return 0; | |
489 | i = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 1), (void *)buffer, len, &rlen, 20000); | |
490 | if (i) | |
491 | printk(KERN_ERR "uss720: sendbulk ep 1 buf %p len %Zu rlen %u\n", buffer, len, rlen); | |
492 | change_mode(pp, ECR_PS2); | |
493 | return rlen; | |
494 | } | |
495 | ||
496 | /* --------------------------------------------------------------------- */ | |
497 | ||
498 | static struct parport_operations parport_uss720_ops = | |
499 | { | |
500 | .owner = THIS_MODULE, | |
501 | .write_data = parport_uss720_write_data, | |
502 | .read_data = parport_uss720_read_data, | |
503 | ||
504 | .write_control = parport_uss720_write_control, | |
505 | .read_control = parport_uss720_read_control, | |
506 | .frob_control = parport_uss720_frob_control, | |
507 | ||
508 | .read_status = parport_uss720_read_status, | |
509 | ||
510 | .enable_irq = parport_uss720_enable_irq, | |
511 | .disable_irq = parport_uss720_disable_irq, | |
512 | ||
513 | .data_forward = parport_uss720_data_forward, | |
514 | .data_reverse = parport_uss720_data_reverse, | |
515 | ||
516 | .init_state = parport_uss720_init_state, | |
517 | .save_state = parport_uss720_save_state, | |
518 | .restore_state = parport_uss720_restore_state, | |
519 | ||
520 | .epp_write_data = parport_uss720_epp_write_data, | |
521 | .epp_read_data = parport_uss720_epp_read_data, | |
522 | .epp_write_addr = parport_uss720_epp_write_addr, | |
523 | .epp_read_addr = parport_uss720_epp_read_addr, | |
524 | ||
525 | .ecp_write_data = parport_uss720_ecp_write_data, | |
526 | .ecp_read_data = parport_uss720_ecp_read_data, | |
527 | .ecp_write_addr = parport_uss720_ecp_write_addr, | |
528 | ||
529 | .compat_write_data = parport_uss720_write_compat, | |
530 | .nibble_read_data = parport_ieee1284_read_nibble, | |
531 | .byte_read_data = parport_ieee1284_read_byte, | |
532 | }; | |
533 | ||
534 | /* --------------------------------------------------------------------- */ | |
535 | ||
536 | static int uss720_probe(struct usb_interface *intf, | |
537 | const struct usb_device_id *id) | |
538 | { | |
539 | struct usb_device *usbdev = interface_to_usbdev(intf); | |
540 | struct usb_host_interface *interface; | |
541 | struct usb_host_endpoint *endpoint; | |
542 | struct parport_uss720_private *priv; | |
543 | struct parport *pp; | |
544 | int i; | |
545 | ||
546 | printk(KERN_DEBUG "uss720: probe: vendor id 0x%x, device id 0x%x\n", | |
547 | le16_to_cpu(usbdev->descriptor.idVendor), | |
548 | le16_to_cpu(usbdev->descriptor.idProduct)); | |
549 | ||
550 | /* our known interfaces have 3 alternate settings */ | |
551 | if (intf->num_altsetting != 3) | |
552 | return -ENODEV; | |
553 | ||
554 | i = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2); | |
555 | printk(KERN_DEBUG "uss720: set inteface result %d\n", i); | |
556 | ||
557 | interface = intf->cur_altsetting; | |
558 | ||
559 | /* | |
560 | * Allocate parport interface | |
561 | */ | |
562 | printk(KERN_INFO "uss720: (C) 1999 by Thomas Sailer, <sailer@ife.ee.ethz.ch>\n"); | |
563 | ||
564 | if (!(priv = kmalloc(sizeof(struct parport_uss720_private), GFP_KERNEL))) | |
565 | return -ENOMEM; | |
566 | if (!(pp = parport_register_port(0, PARPORT_IRQ_NONE, PARPORT_DMA_NONE, &parport_uss720_ops))) { | |
567 | printk(KERN_WARNING "usb-uss720: could not register parport\n"); | |
568 | goto probe_abort; | |
569 | } | |
570 | ||
571 | pp->private_data = priv; | |
572 | priv->usbdev = usbdev; | |
573 | pp->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_ECP | PARPORT_MODE_COMPAT; | |
574 | ||
575 | /* set the USS720 control register to manual mode, no ECP compression, enable all ints */ | |
576 | set_1284_register(pp, 7, 0x00); | |
577 | set_1284_register(pp, 6, 0x30); /* PS/2 mode */ | |
578 | set_1284_register(pp, 2, 0x0c); | |
579 | /* debugging */ | |
580 | get_1284_register(pp, 0, NULL); | |
581 | printk("uss720: reg: %02x %02x %02x %02x %02x %02x %02x\n", | |
582 | priv->reg[0], priv->reg[1], priv->reg[2], priv->reg[3], priv->reg[4], priv->reg[5], priv->reg[6]); | |
583 | ||
584 | endpoint = &interface->endpoint[2]; | |
585 | printk(KERN_DEBUG "uss720: epaddr %d interval %d\n", endpoint->desc.bEndpointAddress, endpoint->desc.bInterval); | |
586 | #if 0 | |
587 | priv->irqpipe = usb_rcvctrlpipe(usbdev, endpoint->bEndpointAddress); | |
588 | i = usb_request_irq(usbdev, priv->irqpipe, | |
589 | uss720_irq, endpoint->bInterval, | |
590 | pp, &priv->irqhandle); | |
591 | if (i) { | |
592 | printk (KERN_WARNING "usb-uss720: usb_request_irq failed (0x%x)\n", i); | |
593 | goto probe_abort_port; | |
594 | } | |
595 | #endif | |
596 | parport_announce_port(pp); | |
597 | ||
598 | usb_set_intfdata (intf, pp); | |
599 | return 0; | |
600 | ||
601 | #if 0 | |
602 | probe_abort_port: | |
603 | parport_put_port(pp); | |
604 | #endif | |
605 | probe_abort: | |
606 | kfree(priv); | |
607 | return -ENODEV; | |
608 | } | |
609 | ||
610 | static void uss720_disconnect(struct usb_interface *intf) | |
611 | { | |
612 | struct parport *pp = usb_get_intfdata (intf); | |
613 | struct parport_uss720_private *priv; | |
614 | ||
615 | usb_set_intfdata (intf, NULL); | |
616 | if (pp) { | |
617 | priv = pp->private_data; | |
618 | parport_remove_port(pp); | |
619 | #if 0 | |
620 | usb_release_irq(usbdev, priv->irqhandle, priv->irqpipe); | |
621 | #endif | |
622 | priv->usbdev = NULL; | |
623 | parport_put_port(pp); | |
624 | kfree(priv); | |
625 | } | |
626 | } | |
627 | ||
628 | /* table of cables that work through this driver */ | |
629 | static struct usb_device_id uss720_table [] = { | |
630 | { USB_DEVICE(0x047e, 0x1001) }, | |
631 | { USB_DEVICE(0x0557, 0x2001) }, | |
632 | { USB_DEVICE(0x0729, 0x1284) }, | |
633 | { USB_DEVICE(0x1293, 0x0002) }, | |
634 | { } /* Terminating entry */ | |
635 | }; | |
636 | ||
637 | MODULE_DEVICE_TABLE (usb, uss720_table); | |
638 | ||
639 | ||
640 | static struct usb_driver uss720_driver = { | |
641 | .owner = THIS_MODULE, | |
642 | .name = "uss720", | |
643 | .probe = uss720_probe, | |
644 | .disconnect = uss720_disconnect, | |
645 | .id_table = uss720_table, | |
646 | }; | |
647 | ||
648 | /* --------------------------------------------------------------------- */ | |
649 | ||
650 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
651 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
652 | MODULE_LICENSE("GPL"); | |
653 | ||
654 | static int __init uss720_init(void) | |
655 | { | |
656 | int retval; | |
657 | retval = usb_register(&uss720_driver); | |
658 | if (retval) | |
659 | goto out; | |
660 | ||
661 | info(DRIVER_VERSION ":" DRIVER_DESC); | |
662 | out: | |
663 | return retval; | |
664 | } | |
665 | ||
666 | static void __exit uss720_cleanup(void) | |
667 | { | |
668 | usb_deregister(&uss720_driver); | |
669 | } | |
670 | ||
671 | module_init(uss720_init); | |
672 | module_exit(uss720_cleanup); | |
673 | ||
674 | /* --------------------------------------------------------------------- */ |