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88e58b1a RDI |
1 | /***************************************************************************** |
2 | * DLFB Kernel Driver * | |
3 | * Version 0.2 (udlfb) * | |
4 | * (C) 2009 Roberto De Ioris <roberto@unbit.it> * | |
5 | * * | |
6 | * This file is licensed under the GPLv2. See COPYING in the package. * | |
7 | * Based on the amazing work of Florian Echtler and libdlo 0.1 * | |
8 | * * | |
9 | * * | |
7316bc55 RDI |
10 | * 10.06.09 release 0.2.3 (edid ioctl, fallback for unsupported modes) * |
11 | * 05.06.09 release 0.2.2 (real screen blanking, rle compression, double buffer) * | |
88e58b1a RDI |
12 | * 31.05.09 release 0.2 * |
13 | * 22.05.09 First public (ugly) release * | |
14 | *****************************************************************************/ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/usb.h> | |
20 | #include <linux/uaccess.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/fb.h> | |
23 | #include <linux/mutex.h> | |
fb299002 | 24 | #include <linux/vmalloc.h> |
88e58b1a RDI |
25 | |
26 | #include "udlfb.h" | |
27 | ||
28 | #define DRIVER_VERSION "DLFB 0.2" | |
29 | ||
f05e0575 | 30 | /* memory functions taken from vfb */ |
88e58b1a RDI |
31 | |
32 | static void *rvmalloc(unsigned long size) | |
33 | { | |
34 | void *mem; | |
35 | unsigned long adr; | |
36 | ||
37 | size = PAGE_ALIGN(size); | |
38 | mem = vmalloc_32(size); | |
39 | if (!mem) | |
40 | return NULL; | |
41 | ||
42 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ | |
43 | adr = (unsigned long)mem; | |
44 | while (size > 0) { | |
45 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
46 | adr += PAGE_SIZE; | |
47 | size -= PAGE_SIZE; | |
48 | } | |
49 | ||
50 | return mem; | |
51 | } | |
52 | ||
53 | static void rvfree(void *mem, unsigned long size) | |
54 | { | |
55 | unsigned long adr; | |
56 | ||
57 | if (!mem) | |
58 | return; | |
59 | ||
60 | adr = (unsigned long)mem; | |
61 | while ((long)size > 0) { | |
62 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
63 | adr += PAGE_SIZE; | |
64 | size -= PAGE_SIZE; | |
65 | } | |
66 | vfree(mem); | |
67 | } | |
68 | ||
69 | static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma) | |
70 | { | |
71 | unsigned long start = vma->vm_start; | |
72 | unsigned long size = vma->vm_end - vma->vm_start; | |
73 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
74 | unsigned long page, pos; | |
75 | ||
76 | printk("MMAP: %lu %u\n", offset + size, info->fix.smem_len); | |
77 | ||
f05e0575 | 78 | if (offset + size > info->fix.smem_len) |
88e58b1a | 79 | return -EINVAL; |
88e58b1a RDI |
80 | |
81 | pos = (unsigned long)info->fix.smem_start + offset; | |
82 | ||
83 | while (size > 0) { | |
84 | page = vmalloc_to_pfn((void *)pos); | |
f05e0575 | 85 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) |
88e58b1a | 86 | return -EAGAIN; |
f05e0575 | 87 | |
88e58b1a RDI |
88 | start += PAGE_SIZE; |
89 | pos += PAGE_SIZE; | |
90 | if (size > PAGE_SIZE) | |
91 | size -= PAGE_SIZE; | |
92 | else | |
93 | size = 0; | |
94 | } | |
95 | ||
96 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
97 | return 0; | |
98 | ||
99 | } | |
100 | ||
f05e0575 | 101 | /* ioctl structure */ |
88e58b1a RDI |
102 | struct dloarea { |
103 | int x, y; | |
104 | int w, h; | |
7316bc55 | 105 | int x2, y2; |
88e58b1a RDI |
106 | }; |
107 | ||
108 | /* | |
88e58b1a RDI |
109 | static struct usb_device_id id_table [] = { |
110 | { USB_DEVICE(0x17e9, 0x023d) }, | |
f05e0575 | 111 | { } |
88e58b1a | 112 | }; |
88e58b1a RDI |
113 | */ |
114 | ||
115 | static struct usb_device_id id_table[] = { | |
f05e0575 | 116 | {.idVendor = 0x17e9, .match_flags = USB_DEVICE_ID_MATCH_VENDOR,}, |
88e58b1a RDI |
117 | {}, |
118 | }; | |
88e58b1a RDI |
119 | MODULE_DEVICE_TABLE(usb, id_table); |
120 | ||
121 | static struct usb_driver dlfb_driver; | |
122 | ||
7316bc55 RDI |
123 | // thanks to Henrik Bjerregaard Pedersen for this function |
124 | static char *rle_compress16(uint16_t * src, char *dst, int rem) | |
125 | { | |
126 | ||
127 | int rl; | |
128 | uint16_t pix0; | |
129 | char *end_if_raw = dst + 6 + 2 * rem; | |
130 | ||
131 | dst += 6; // header will be filled in if RLE is worth it | |
132 | ||
133 | while (rem && dst < end_if_raw) { | |
134 | char *start = (char *)src; | |
135 | ||
136 | pix0 = *src++; | |
137 | rl = 1; | |
138 | rem--; | |
139 | while (rem && *src == pix0) | |
140 | rem--, rl++, src++; | |
141 | *dst++ = rl; | |
142 | *dst++ = start[1]; | |
143 | *dst++ = start[0]; | |
144 | } | |
145 | ||
146 | return dst; | |
147 | } | |
148 | ||
149 | /* | |
150 | Thanks to Henrik Bjerregaard Pedersen for rle implementation and code refactoring. | |
151 | Next step is huffman compression. | |
152 | */ | |
153 | ||
88e58b1a RDI |
154 | static int |
155 | image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, | |
156 | char *data) | |
157 | { | |
158 | ||
159 | int i, j, base; | |
160 | int rem = width; | |
161 | int ret; | |
162 | ||
7316bc55 | 163 | int firstdiff, thistime; |
88e58b1a RDI |
164 | |
165 | char *bufptr; | |
166 | ||
f05e0575 | 167 | if (x + width > dev_info->info->var.xres) |
88e58b1a | 168 | return -EINVAL; |
88e58b1a | 169 | |
f05e0575 | 170 | if (y + height > dev_info->info->var.yres) |
88e58b1a | 171 | return -EINVAL; |
88e58b1a RDI |
172 | |
173 | mutex_lock(&dev_info->bulk_mutex); | |
174 | ||
7316bc55 RDI |
175 | base = |
176 | dev_info->base16 + ((dev_info->info->var.xres * 2 * y) + (x * 2)); | |
88e58b1a RDI |
177 | |
178 | data += (dev_info->info->var.xres * 2 * y) + (x * 2); | |
179 | ||
f05e0575 | 180 | /* printk("IMAGE_BLIT\n"); */ |
88e58b1a RDI |
181 | |
182 | bufptr = dev_info->buf; | |
183 | ||
184 | for (i = y; i < y + height; i++) { | |
185 | ||
186 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
187 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
188 | bufptr = dev_info->buf; | |
189 | } | |
190 | ||
191 | rem = width; | |
192 | ||
f05e0575 | 193 | /* printk("WRITING LINE %d\n", i); */ |
88e58b1a RDI |
194 | |
195 | while (rem) { | |
196 | ||
197 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
198 | ret = | |
199 | dlfb_bulk_msg(dev_info, | |
200 | bufptr - dev_info->buf); | |
201 | bufptr = dev_info->buf; | |
202 | } | |
7316bc55 RDI |
203 | // number of pixels to consider this time |
204 | thistime = rem; | |
205 | if (thistime > 255) | |
206 | thistime = 255; | |
207 | ||
208 | // find position of first pixel that has changed | |
209 | firstdiff = -1; | |
210 | for (j = 0; j < thistime * 2; j++) { | |
211 | if (dev_info->backing_buffer | |
212 | [base - dev_info->base16 + j] != data[j]) { | |
213 | firstdiff = j / 2; | |
214 | break; | |
88e58b1a | 215 | } |
7316bc55 | 216 | } |
88e58b1a | 217 | |
7316bc55 RDI |
218 | if (firstdiff >= 0) { |
219 | char *end_of_rle; | |
220 | ||
221 | end_of_rle = | |
222 | rle_compress16((uint16_t *) (data + | |
223 | firstdiff * 2), | |
224 | bufptr, | |
225 | thistime - firstdiff); | |
226 | ||
227 | if (end_of_rle < | |
228 | bufptr + 6 + 2 * (thistime - firstdiff)) { | |
229 | bufptr[0] = 0xAF; | |
230 | bufptr[1] = 0x69; | |
231 | ||
232 | bufptr[2] = | |
233 | (char)((base + | |
234 | firstdiff * 2) >> 16); | |
235 | bufptr[3] = | |
236 | (char)((base + firstdiff * 2) >> 8); | |
237 | bufptr[4] = | |
238 | (char)(base + firstdiff * 2); | |
239 | bufptr[5] = thistime - firstdiff; | |
240 | ||
241 | bufptr = end_of_rle; | |
242 | ||
243 | } else { | |
244 | // fallback to raw (or some other encoding?) | |
88e58b1a RDI |
245 | *bufptr++ = 0xAF; |
246 | *bufptr++ = 0x68; | |
247 | ||
7316bc55 RDI |
248 | *bufptr++ = |
249 | (char)((base + | |
250 | firstdiff * 2) >> 16); | |
251 | *bufptr++ = | |
252 | (char)((base + firstdiff * 2) >> 8); | |
253 | *bufptr++ = | |
254 | (char)(base + firstdiff * 2); | |
255 | *bufptr++ = thistime - firstdiff; | |
256 | // PUT COMPRESSION HERE | |
257 | for (j = firstdiff * 2; | |
258 | j < thistime * 2; j += 2) { | |
259 | *bufptr++ = data[j + 1]; | |
260 | *bufptr++ = data[j]; | |
88e58b1a | 261 | } |
88e58b1a | 262 | } |
88e58b1a RDI |
263 | } |
264 | ||
7316bc55 RDI |
265 | base += thistime * 2; |
266 | data += thistime * 2; | |
267 | rem -= thistime; | |
88e58b1a RDI |
268 | } |
269 | ||
7316bc55 RDI |
270 | memcpy(dev_info->backing_buffer + (base - dev_info->base16) - |
271 | (width * 2), data - (width * 2), width * 2); | |
88e58b1a RDI |
272 | |
273 | base += (dev_info->info->var.xres * 2) - (width * 2); | |
274 | data += (dev_info->info->var.xres * 2) - (width * 2); | |
275 | ||
276 | } | |
277 | ||
7316bc55 | 278 | if (bufptr > dev_info->buf) { |
88e58b1a | 279 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
7316bc55 | 280 | } |
88e58b1a RDI |
281 | |
282 | mutex_unlock(&dev_info->bulk_mutex); | |
283 | ||
284 | return base; | |
285 | ||
286 | } | |
287 | ||
288 | static int | |
289 | draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height, | |
290 | unsigned char red, unsigned char green, unsigned char blue) | |
291 | { | |
292 | ||
293 | int i, j, base; | |
294 | int ret; | |
295 | unsigned short col = | |
296 | (((((red) & 0xF8) | ((green) >> 5)) & 0xFF) << 8) + | |
297 | (((((green) & 0x1C) << 3) | ((blue) >> 3)) & 0xFF); | |
298 | int rem = width; | |
299 | ||
300 | char *bufptr; | |
301 | ||
f05e0575 | 302 | if (x + width > dev_info->info->var.xres) |
88e58b1a | 303 | return -EINVAL; |
88e58b1a | 304 | |
f05e0575 | 305 | if (y + height > dev_info->info->var.yres) |
88e58b1a | 306 | return -EINVAL; |
88e58b1a RDI |
307 | |
308 | mutex_lock(&dev_info->bulk_mutex); | |
309 | ||
310 | base = dev_info->base16 + (dev_info->info->var.xres * 2 * y) + (x * 2); | |
311 | ||
312 | bufptr = dev_info->buf; | |
313 | ||
314 | for (i = y; i < y + height; i++) { | |
315 | ||
316 | for (j = 0; j < width * 2; j += 2) { | |
7316bc55 RDI |
317 | dev_info->backing_buffer[base - dev_info->base16 + j] = |
318 | (char)(col >> 8); | |
319 | dev_info->backing_buffer[base - dev_info->base16 + j + | |
320 | 1] = (char)(col); | |
88e58b1a RDI |
321 | } |
322 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
323 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
324 | bufptr = dev_info->buf; | |
325 | } | |
326 | ||
327 | rem = width; | |
328 | ||
329 | while (rem) { | |
330 | ||
331 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
332 | ret = | |
333 | dlfb_bulk_msg(dev_info, | |
334 | bufptr - dev_info->buf); | |
335 | bufptr = dev_info->buf; | |
336 | } | |
337 | ||
338 | *bufptr++ = 0xAF; | |
339 | *bufptr++ = 0x69; | |
340 | ||
341 | *bufptr++ = (char)(base >> 16); | |
342 | *bufptr++ = (char)(base >> 8); | |
343 | *bufptr++ = (char)(base); | |
344 | ||
345 | if (rem > 255) { | |
346 | *bufptr++ = 255; | |
347 | *bufptr++ = 255; | |
348 | rem -= 255; | |
349 | base += 255 * 2; | |
350 | } else { | |
351 | *bufptr++ = rem; | |
352 | *bufptr++ = rem; | |
353 | base += rem * 2; | |
354 | rem = 0; | |
355 | } | |
356 | ||
357 | *bufptr++ = (char)(col >> 8); | |
358 | *bufptr++ = (char)(col); | |
359 | ||
360 | } | |
361 | ||
362 | base += (dev_info->info->var.xres * 2) - (width * 2); | |
363 | ||
364 | } | |
365 | ||
f05e0575 | 366 | if (bufptr > dev_info->buf) |
88e58b1a | 367 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
88e58b1a RDI |
368 | |
369 | mutex_unlock(&dev_info->bulk_mutex); | |
370 | ||
371 | return 1; | |
372 | } | |
373 | ||
7316bc55 RDI |
374 | static void swapfb(struct dlfb_data *dev_info) |
375 | { | |
376 | ||
377 | int tmpbase; | |
378 | char *bufptr; | |
379 | ||
380 | mutex_lock(&dev_info->bulk_mutex); | |
381 | ||
382 | tmpbase = dev_info->base16; | |
383 | ||
384 | dev_info->base16 = dev_info->base16d; | |
385 | dev_info->base16d = tmpbase; | |
386 | ||
387 | bufptr = dev_info->buf; | |
388 | ||
389 | bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); | |
390 | ||
391 | // set addresses | |
392 | bufptr = | |
393 | dlfb_set_register(bufptr, 0x20, (char)(dev_info->base16 >> 16)); | |
394 | bufptr = dlfb_set_register(bufptr, 0x21, (char)(dev_info->base16 >> 8)); | |
395 | bufptr = dlfb_set_register(bufptr, 0x22, (char)(dev_info->base16)); | |
396 | ||
397 | bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); | |
398 | ||
399 | dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
400 | ||
401 | mutex_unlock(&dev_info->bulk_mutex); | |
402 | } | |
403 | ||
404 | static int copyfb(struct dlfb_data *dev_info) | |
405 | { | |
406 | int base; | |
407 | int source; | |
408 | int rem; | |
409 | int i, ret; | |
410 | ||
411 | char *bufptr; | |
412 | ||
413 | base = dev_info->base16d; | |
414 | ||
415 | mutex_lock(&dev_info->bulk_mutex); | |
416 | ||
417 | source = dev_info->base16; | |
418 | ||
419 | bufptr = dev_info->buf; | |
420 | ||
421 | for (i = 0; i < dev_info->info->var.yres; i++) { | |
422 | ||
423 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
424 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
425 | bufptr = dev_info->buf; | |
426 | } | |
427 | ||
428 | rem = dev_info->info->var.xres; | |
429 | ||
430 | while (rem) { | |
431 | ||
432 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
433 | ret = | |
434 | dlfb_bulk_msg(dev_info, | |
435 | bufptr - dev_info->buf); | |
436 | bufptr = dev_info->buf; | |
437 | ||
438 | } | |
439 | ||
440 | *bufptr++ = 0xAF; | |
441 | *bufptr++ = 0x6A; | |
442 | ||
443 | *bufptr++ = (char)(base >> 16); | |
444 | *bufptr++ = (char)(base >> 8); | |
445 | *bufptr++ = (char)(base); | |
446 | ||
447 | if (rem > 255) { | |
448 | *bufptr++ = 255; | |
449 | *bufptr++ = (char)(source >> 16); | |
450 | *bufptr++ = (char)(source >> 8); | |
451 | *bufptr++ = (char)(source); | |
452 | ||
453 | rem -= 255; | |
454 | base += 255 * 2; | |
455 | source += 255 * 2; | |
456 | ||
457 | } else { | |
458 | *bufptr++ = rem; | |
459 | *bufptr++ = (char)(source >> 16); | |
460 | *bufptr++ = (char)(source >> 8); | |
461 | *bufptr++ = (char)(source); | |
462 | ||
463 | base += rem * 2; | |
464 | source += rem * 2; | |
465 | rem = 0; | |
466 | } | |
467 | } | |
468 | } | |
469 | ||
470 | if (bufptr > dev_info->buf) | |
471 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
472 | ||
473 | mutex_unlock(&dev_info->bulk_mutex); | |
474 | ||
475 | return 1; | |
476 | ||
477 | } | |
478 | ||
88e58b1a RDI |
479 | static int |
480 | copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy, | |
481 | int width, int height) | |
482 | { | |
88e58b1a RDI |
483 | int base; |
484 | int source; | |
485 | int rem; | |
486 | int i, ret; | |
487 | ||
488 | char *bufptr; | |
489 | ||
f05e0575 | 490 | if (dx + width > dev_info->info->var.xres) |
88e58b1a | 491 | return -EINVAL; |
88e58b1a | 492 | |
f05e0575 | 493 | if (dy + height > dev_info->info->var.yres) |
88e58b1a | 494 | return -EINVAL; |
88e58b1a RDI |
495 | |
496 | mutex_lock(&dev_info->bulk_mutex); | |
497 | ||
498 | base = | |
499 | dev_info->base16 + (dev_info->info->var.xres * 2 * dy) + (dx * 2); | |
500 | source = (dev_info->info->var.xres * 2 * sy) + (sx * 2); | |
501 | ||
502 | bufptr = dev_info->buf; | |
503 | ||
504 | for (i = sy; i < sy + height; i++) { | |
505 | ||
7316bc55 | 506 | memcpy(dev_info->backing_buffer + base - dev_info->base16, |
88e58b1a RDI |
507 | dev_info->backing_buffer + source, width * 2); |
508 | ||
509 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
510 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
511 | bufptr = dev_info->buf; | |
512 | } | |
513 | ||
514 | rem = width; | |
515 | ||
516 | while (rem) { | |
517 | ||
518 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { | |
519 | ret = | |
520 | dlfb_bulk_msg(dev_info, | |
521 | bufptr - dev_info->buf); | |
522 | bufptr = dev_info->buf; | |
523 | } | |
524 | ||
525 | *bufptr++ = 0xAF; | |
526 | *bufptr++ = 0x6A; | |
527 | ||
528 | *bufptr++ = (char)(base >> 16); | |
529 | *bufptr++ = (char)(base >> 8); | |
530 | *bufptr++ = (char)(base); | |
531 | ||
532 | if (rem > 255) { | |
533 | *bufptr++ = 255; | |
534 | *bufptr++ = (char)(source >> 16); | |
535 | *bufptr++ = (char)(source >> 8); | |
536 | *bufptr++ = (char)(source); | |
537 | ||
538 | rem -= 255; | |
539 | base += 255 * 2; | |
540 | source += 255 * 2; | |
541 | ||
542 | } else { | |
543 | *bufptr++ = rem; | |
544 | *bufptr++ = (char)(source >> 16); | |
545 | *bufptr++ = (char)(source >> 8); | |
546 | *bufptr++ = (char)(source); | |
547 | ||
548 | base += rem * 2; | |
549 | source += rem * 2; | |
550 | rem = 0; | |
551 | } | |
88e58b1a RDI |
552 | } |
553 | ||
554 | base += (dev_info->info->var.xres * 2) - (width * 2); | |
555 | source += (dev_info->info->var.xres * 2) - (width * 2); | |
88e58b1a RDI |
556 | } |
557 | ||
f05e0575 | 558 | if (bufptr > dev_info->buf) |
88e58b1a | 559 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
88e58b1a RDI |
560 | |
561 | mutex_unlock(&dev_info->bulk_mutex); | |
562 | ||
563 | return 1; | |
564 | } | |
565 | ||
4b6a4856 | 566 | static void dlfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
88e58b1a RDI |
567 | { |
568 | ||
569 | struct dlfb_data *dev = info->par; | |
570 | ||
571 | copyarea(dev, area->dx, area->dy, area->sx, area->sy, area->width, | |
572 | area->height); | |
573 | ||
f05e0575 | 574 | /* printk("COPY AREA %d %d %d %d %d %d !!!\n", area->dx, area->dy, area->sx, area->sy, area->width, area->height); */ |
88e58b1a RDI |
575 | |
576 | } | |
577 | ||
4b6a4856 | 578 | static void dlfb_imageblit(struct fb_info *info, const struct fb_image *image) |
88e58b1a RDI |
579 | { |
580 | ||
581 | int ret; | |
582 | struct dlfb_data *dev = info->par; | |
f05e0575 | 583 | /* printk("IMAGE BLIT (1) %d %d %d %d DEPTH %d {%p}!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev); */ |
88e58b1a RDI |
584 | cfb_imageblit(info, image); |
585 | ret = | |
586 | image_blit(dev, image->dx, image->dy, image->width, image->height, | |
587 | info->screen_base); | |
f05e0575 | 588 | /* printk("IMAGE BLIT (2) %d %d %d %d DEPTH %d {%p} %d!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev, ret); */ |
88e58b1a RDI |
589 | } |
590 | ||
7316bc55 RDI |
591 | static void dlfb_fillrect(struct fb_info *info, |
592 | const struct fb_fillrect *region) | |
88e58b1a RDI |
593 | { |
594 | ||
595 | unsigned char red, green, blue; | |
596 | struct dlfb_data *dev = info->par; | |
597 | ||
598 | memcpy(&red, ®ion->color, 1); | |
599 | memcpy(&green, ®ion->color + 1, 1); | |
600 | memcpy(&blue, ®ion->color + 2, 1); | |
601 | draw_rect(dev, region->dx, region->dy, region->width, region->height, | |
602 | red, green, blue); | |
f05e0575 | 603 | /* printk("FILL RECT %d %d !!!\n", region->dx, region->dy); */ |
88e58b1a RDI |
604 | |
605 | } | |
606 | ||
607 | static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) | |
608 | { | |
609 | ||
610 | struct dlfb_data *dev_info = info->par; | |
7316bc55 | 611 | struct dloarea *area = NULL; |
88e58b1a | 612 | |
7316bc55 RDI |
613 | if (cmd == 0xAD) { |
614 | char *edid = (char *)arg; | |
615 | dlfb_edid(dev_info); | |
616 | if (copy_to_user(edid, dev_info->edid, 128)) { | |
617 | return -EFAULT; | |
618 | } | |
619 | return 0; | |
620 | } | |
621 | ||
622 | if (cmd == 0xAA || cmd == 0xAB || cmd == 0xAC) { | |
88e58b1a RDI |
623 | |
624 | area = (struct dloarea *)arg; | |
625 | ||
626 | if (area->x < 0) | |
627 | area->x = 0; | |
628 | ||
629 | if (area->x > info->var.xres) | |
630 | area->x = info->var.xres; | |
631 | ||
632 | if (area->y < 0) | |
633 | area->y = 0; | |
634 | ||
635 | if (area->y > info->var.yres) | |
636 | area->y = info->var.yres; | |
7316bc55 | 637 | } |
88e58b1a | 638 | |
7316bc55 | 639 | if (cmd == 0xAA) { |
88e58b1a RDI |
640 | image_blit(dev_info, area->x, area->y, area->w, area->h, |
641 | info->screen_base); | |
642 | } | |
7316bc55 RDI |
643 | if (cmd == 0xAC) { |
644 | copyfb(dev_info); | |
645 | image_blit(dev_info, area->x, area->y, area->w, area->h, | |
646 | info->screen_base); | |
647 | swapfb(dev_info); | |
648 | } else if (cmd == 0xAB) { | |
649 | ||
650 | if (area->x2 < 0) | |
651 | area->x2 = 0; | |
652 | ||
653 | if (area->y2 < 0) | |
654 | area->y2 = 0; | |
655 | ||
656 | copyarea(dev_info, | |
657 | area->x2, area->y2, area->x, area->y, area->w, | |
658 | area->h); | |
659 | } | |
88e58b1a RDI |
660 | return 0; |
661 | } | |
662 | ||
f05e0575 | 663 | /* taken from vesafb */ |
88e58b1a RDI |
664 | |
665 | static int | |
666 | dlfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
667 | unsigned blue, unsigned transp, struct fb_info *info) | |
668 | { | |
669 | int err = 0; | |
670 | ||
671 | if (regno >= info->cmap.len) | |
672 | return 1; | |
673 | ||
674 | if (regno < 16) { | |
675 | if (info->var.red.offset == 10) { | |
676 | /* 1:5:5:5 */ | |
677 | ((u32 *) (info->pseudo_palette))[regno] = | |
678 | ((red & 0xf800) >> 1) | | |
679 | ((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11); | |
680 | } else { | |
681 | /* 0:5:6:5 */ | |
682 | ((u32 *) (info->pseudo_palette))[regno] = | |
683 | ((red & 0xf800)) | | |
684 | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); | |
685 | } | |
686 | } | |
687 | ||
688 | return err; | |
689 | } | |
690 | ||
691 | static int dlfb_release(struct fb_info *info, int user) | |
692 | { | |
693 | struct dlfb_data *dev_info = info->par; | |
694 | image_blit(dev_info, 0, 0, info->var.xres, info->var.yres, | |
695 | info->screen_base); | |
696 | return 0; | |
697 | } | |
698 | ||
f05e0575 GKH |
699 | static int dlfb_blank(int blank_mode, struct fb_info *info) |
700 | { | |
7316bc55 RDI |
701 | struct dlfb_data *dev_info = info->par; |
702 | char *bufptr = dev_info->buf; | |
703 | ||
704 | bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); | |
705 | if (blank_mode != FB_BLANK_UNBLANK) { | |
706 | bufptr = dlfb_set_register(bufptr, 0x1F, 0x01); | |
707 | } else { | |
708 | bufptr = dlfb_set_register(bufptr, 0x1F, 0x00); | |
709 | } | |
710 | bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF); | |
711 | ||
712 | dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); | |
713 | ||
88e58b1a RDI |
714 | return 0; |
715 | } | |
716 | ||
717 | static struct fb_ops dlfb_ops = { | |
88e58b1a RDI |
718 | .fb_setcolreg = dlfb_setcolreg, |
719 | .fb_fillrect = dlfb_fillrect, | |
720 | .fb_copyarea = dlfb_copyarea, | |
721 | .fb_imageblit = dlfb_imageblit, | |
722 | .fb_mmap = dlfb_mmap, | |
723 | .fb_ioctl = dlfb_ioctl, | |
724 | .fb_release = dlfb_release, | |
725 | .fb_blank = dlfb_blank, | |
726 | }; | |
727 | ||
728 | static int | |
729 | dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id) | |
730 | { | |
731 | struct dlfb_data *dev_info; | |
732 | struct fb_info *info; | |
88e58b1a RDI |
733 | |
734 | int ret; | |
735 | char rbuf[4]; | |
736 | ||
737 | dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL); | |
738 | if (dev_info == NULL) { | |
739 | printk("cannot allocate dev_info structure.\n"); | |
740 | return -ENOMEM; | |
741 | } | |
742 | ||
743 | mutex_init(&dev_info->bulk_mutex); | |
744 | ||
745 | dev_info->udev = usb_get_dev(interface_to_usbdev(interface)); | |
746 | dev_info->interface = interface; | |
747 | ||
748 | printk("DisplayLink device attached\n"); | |
749 | ||
f05e0575 | 750 | /* add framebuffer info to usb interface */ |
88e58b1a RDI |
751 | usb_set_intfdata(interface, dev_info); |
752 | ||
f05e0575 GKH |
753 | dev_info->buf = kmalloc(BUF_SIZE, GFP_KERNEL); |
754 | /* usb_buffer_alloc(dev_info->udev, BUF_SIZE , GFP_KERNEL, &dev_info->tx_urb->transfer_dma); */ | |
88e58b1a RDI |
755 | |
756 | if (dev_info->buf == NULL) { | |
757 | printk("unable to allocate memory for dlfb commands\n"); | |
758 | goto out; | |
759 | } | |
760 | dev_info->bufend = dev_info->buf + BUF_SIZE; | |
761 | ||
762 | dev_info->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
763 | usb_fill_bulk_urb(dev_info->tx_urb, dev_info->udev, | |
764 | usb_sndbulkpipe(dev_info->udev, 1), dev_info->buf, 0, | |
765 | dlfb_bulk_callback, dev_info); | |
766 | ||
767 | ret = | |
768 | usb_control_msg(dev_info->udev, usb_rcvctrlpipe(dev_info->udev, 0), | |
769 | (0x06), (0x80 | (0x02 << 5)), 0, 0, rbuf, 4, 0); | |
770 | printk("ret control msg 0: %d %x%x%x%x\n", ret, rbuf[0], rbuf[1], | |
771 | rbuf[2], rbuf[3]); | |
772 | ||
7316bc55 | 773 | dlfb_edid(dev_info); |
88e58b1a RDI |
774 | |
775 | info = framebuffer_alloc(sizeof(u32) * 256, &dev_info->udev->dev); | |
776 | ||
777 | if (!info) { | |
778 | printk("non posso allocare il framebuffer displaylink"); | |
779 | goto out; | |
780 | } | |
781 | ||
782 | fb_parse_edid(dev_info->edid, &info->var); | |
783 | ||
784 | printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres); | |
785 | ||
7316bc55 RDI |
786 | if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) { |
787 | info->var.xres = 1280; | |
788 | info->var.yres = 1024; | |
789 | if (dlfb_set_video_mode | |
790 | (dev_info, info->var.xres, info->var.yres) != 0) { | |
791 | goto out; | |
792 | } | |
793 | } | |
88e58b1a RDI |
794 | |
795 | printk("found valid mode...%d\n", info->var.pixclock); | |
796 | ||
797 | info->pseudo_palette = info->par; | |
798 | info->par = dev_info; | |
799 | ||
800 | dev_info->info = info; | |
801 | ||
802 | info->flags = | |
803 | FBINFO_DEFAULT | FBINFO_READS_FAST | FBINFO_HWACCEL_IMAGEBLIT | | |
804 | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; | |
805 | info->fbops = &dlfb_ops; | |
806 | info->screen_base = rvmalloc(dev_info->screen_size); | |
807 | ||
808 | if (info->screen_base == NULL) { | |
809 | printk | |
810 | ("cannot allocate framebuffer virtual memory of %d bytes\n", | |
811 | dev_info->screen_size); | |
812 | goto out0; | |
813 | } | |
814 | ||
815 | printk("screen base allocated !!!\n"); | |
816 | ||
817 | dev_info->backing_buffer = kzalloc(dev_info->screen_size, GFP_KERNEL); | |
818 | ||
f05e0575 | 819 | if (!dev_info->backing_buffer) |
88e58b1a | 820 | printk("non posso allocare il backing buffer\n"); |
f05e0575 GKH |
821 | |
822 | /* info->var = dev_info->si; */ | |
88e58b1a RDI |
823 | |
824 | info->var.bits_per_pixel = 16; | |
825 | info->var.activate = FB_ACTIVATE_TEST; | |
826 | info->var.vmode = FB_VMODE_NONINTERLACED; | |
827 | ||
828 | info->var.red.offset = 11; | |
829 | info->var.red.length = 5; | |
830 | info->var.red.msb_right = 0; | |
831 | ||
832 | info->var.green.offset = 5; | |
833 | info->var.green.length = 6; | |
834 | info->var.green.msb_right = 0; | |
835 | ||
836 | info->var.blue.offset = 0; | |
837 | info->var.blue.length = 5; | |
838 | info->var.blue.msb_right = 0; | |
839 | ||
f05e0575 | 840 | /* info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ; */ |
88e58b1a RDI |
841 | |
842 | info->fix.smem_start = (unsigned long)info->screen_base; | |
843 | info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size); | |
7316bc55 RDI |
844 | if (strlen(dev_info->udev->product) > 15) { |
845 | memcpy(info->fix.id, dev_info->udev->product, 15); | |
846 | } else { | |
847 | memcpy(info->fix.id, dev_info->udev->product, | |
848 | strlen(dev_info->udev->product)); | |
849 | } | |
88e58b1a RDI |
850 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
851 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
852 | info->fix.accel = info->flags; | |
853 | info->fix.line_length = dev_info->line_length; | |
854 | ||
f05e0575 | 855 | if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) |
88e58b1a | 856 | goto out1; |
88e58b1a RDI |
857 | |
858 | printk("colormap allocated\n"); | |
f05e0575 | 859 | if (register_framebuffer(info) < 0) |
88e58b1a | 860 | goto out2; |
88e58b1a RDI |
861 | |
862 | draw_rect(dev_info, 0, 0, dev_info->info->var.xres, | |
863 | dev_info->info->var.yres, 0x30, 0xff, 0x30); | |
864 | ||
865 | return 0; | |
866 | ||
7316bc55 | 867 | out2: |
88e58b1a | 868 | fb_dealloc_cmap(&info->cmap); |
7316bc55 | 869 | out1: |
88e58b1a | 870 | rvfree(info->screen_base, dev_info->screen_size); |
7316bc55 | 871 | out0: |
88e58b1a | 872 | framebuffer_release(info); |
7316bc55 | 873 | out: |
88e58b1a RDI |
874 | usb_set_intfdata(interface, NULL); |
875 | usb_put_dev(dev_info->udev); | |
876 | kfree(dev_info); | |
877 | return -ENOMEM; | |
878 | ||
879 | } | |
880 | ||
881 | static void dlfb_disconnect(struct usb_interface *interface) | |
882 | { | |
883 | struct dlfb_data *dev_info = usb_get_intfdata(interface); | |
884 | ||
885 | mutex_unlock(&dev_info->bulk_mutex); | |
886 | ||
887 | usb_kill_urb(dev_info->tx_urb); | |
888 | usb_free_urb(dev_info->tx_urb); | |
889 | usb_set_intfdata(interface, NULL); | |
890 | usb_put_dev(dev_info->udev); | |
891 | ||
892 | if (dev_info->info) { | |
893 | unregister_framebuffer(dev_info->info); | |
894 | fb_dealloc_cmap(&dev_info->info->cmap); | |
895 | rvfree(dev_info->info->screen_base, dev_info->screen_size); | |
896 | kfree(dev_info->backing_buffer); | |
897 | framebuffer_release(dev_info->info); | |
898 | ||
899 | } | |
900 | ||
901 | kfree(dev_info); | |
902 | ||
903 | printk("DisplayLink device disconnected\n"); | |
904 | } | |
905 | ||
906 | static struct usb_driver dlfb_driver = { | |
907 | .name = "udlfb", | |
908 | .probe = dlfb_probe, | |
909 | .disconnect = dlfb_disconnect, | |
910 | .id_table = id_table, | |
911 | }; | |
912 | ||
913 | static int __init dlfb_init(void) | |
914 | { | |
915 | int res; | |
916 | ||
917 | dlfb_init_modes(); | |
918 | ||
919 | res = usb_register(&dlfb_driver); | |
920 | if (res) | |
921 | err("usb_register failed. Error number %d", res); | |
922 | ||
923 | printk("VMODES initialized\n"); | |
924 | ||
925 | return res; | |
926 | } | |
927 | ||
928 | static void __exit dlfb_exit(void) | |
929 | { | |
930 | usb_deregister(&dlfb_driver); | |
931 | } | |
932 | ||
933 | module_init(dlfb_init); | |
934 | module_exit(dlfb_exit); | |
935 | ||
936 | MODULE_AUTHOR("Roberto De Ioris <roberto@unbit.it>"); | |
937 | MODULE_DESCRIPTION(DRIVER_VERSION); | |
938 | MODULE_LICENSE("GPL"); |