Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame^] | 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 | * * |
| 10 | * 31.05.09 release 0.2 * |
| 11 | * 22.05.09 First public (ugly) release * |
| 12 | *****************************************************************************/ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/usb.h> |
| 18 | #include <linux/uaccess.h> |
| 19 | #include <linux/mm.h> |
| 20 | #include <linux/fb.h> |
| 21 | #include <linux/mutex.h> |
| 22 | |
| 23 | #include "udlfb.h" |
| 24 | |
| 25 | #define DRIVER_VERSION "DLFB 0.2" |
| 26 | |
| 27 | // memory functions taken from vfb |
| 28 | |
| 29 | static void *rvmalloc(unsigned long size) |
| 30 | { |
| 31 | void *mem; |
| 32 | unsigned long adr; |
| 33 | |
| 34 | size = PAGE_ALIGN(size); |
| 35 | mem = vmalloc_32(size); |
| 36 | if (!mem) |
| 37 | return NULL; |
| 38 | |
| 39 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| 40 | adr = (unsigned long)mem; |
| 41 | while (size > 0) { |
| 42 | SetPageReserved(vmalloc_to_page((void *)adr)); |
| 43 | adr += PAGE_SIZE; |
| 44 | size -= PAGE_SIZE; |
| 45 | } |
| 46 | |
| 47 | return mem; |
| 48 | } |
| 49 | |
| 50 | static void rvfree(void *mem, unsigned long size) |
| 51 | { |
| 52 | unsigned long adr; |
| 53 | |
| 54 | if (!mem) |
| 55 | return; |
| 56 | |
| 57 | adr = (unsigned long)mem; |
| 58 | while ((long)size > 0) { |
| 59 | ClearPageReserved(vmalloc_to_page((void *)adr)); |
| 60 | adr += PAGE_SIZE; |
| 61 | size -= PAGE_SIZE; |
| 62 | } |
| 63 | vfree(mem); |
| 64 | } |
| 65 | |
| 66 | static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma) |
| 67 | { |
| 68 | unsigned long start = vma->vm_start; |
| 69 | unsigned long size = vma->vm_end - vma->vm_start; |
| 70 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; |
| 71 | unsigned long page, pos; |
| 72 | |
| 73 | printk("MMAP: %lu %u\n", offset + size, info->fix.smem_len); |
| 74 | |
| 75 | if (offset + size > info->fix.smem_len) { |
| 76 | return -EINVAL; |
| 77 | } |
| 78 | |
| 79 | pos = (unsigned long)info->fix.smem_start + offset; |
| 80 | |
| 81 | while (size > 0) { |
| 82 | page = vmalloc_to_pfn((void *)pos); |
| 83 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { |
| 84 | return -EAGAIN; |
| 85 | } |
| 86 | start += PAGE_SIZE; |
| 87 | pos += PAGE_SIZE; |
| 88 | if (size > PAGE_SIZE) |
| 89 | size -= PAGE_SIZE; |
| 90 | else |
| 91 | size = 0; |
| 92 | } |
| 93 | |
| 94 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ |
| 95 | return 0; |
| 96 | |
| 97 | } |
| 98 | |
| 99 | // |
| 100 | |
| 101 | //ioctl structure |
| 102 | struct dloarea { |
| 103 | int x, y; |
| 104 | int w, h; |
| 105 | }; |
| 106 | |
| 107 | /* |
| 108 | |
| 109 | static struct usb_device_id id_table [] = { |
| 110 | { USB_DEVICE(0x17e9, 0x023d) }, |
| 111 | { } |
| 112 | }; |
| 113 | |
| 114 | */ |
| 115 | |
| 116 | static struct usb_device_id id_table[] = { |
| 117 | {.idVendor = 0x17e9,.match_flags = USB_DEVICE_ID_MATCH_VENDOR,}, |
| 118 | {}, |
| 119 | }; |
| 120 | |
| 121 | MODULE_DEVICE_TABLE(usb, id_table); |
| 122 | |
| 123 | static struct usb_driver dlfb_driver; |
| 124 | |
| 125 | static int |
| 126 | image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, |
| 127 | char *data) |
| 128 | { |
| 129 | |
| 130 | int i, j, base; |
| 131 | int rem = width; |
| 132 | int ret; |
| 133 | |
| 134 | int diff; |
| 135 | |
| 136 | char *bufptr; |
| 137 | |
| 138 | if (x + width > dev_info->info->var.xres) { |
| 139 | return -EINVAL; |
| 140 | } |
| 141 | |
| 142 | if (y + height > dev_info->info->var.yres) { |
| 143 | return -EINVAL; |
| 144 | } |
| 145 | |
| 146 | mutex_lock(&dev_info->bulk_mutex); |
| 147 | |
| 148 | base = dev_info->base16 + (dev_info->info->var.xres * 2 * y) + (x * 2); |
| 149 | |
| 150 | data += (dev_info->info->var.xres * 2 * y) + (x * 2); |
| 151 | |
| 152 | //printk("IMAGE_BLIT\n"); |
| 153 | |
| 154 | bufptr = dev_info->buf; |
| 155 | |
| 156 | for (i = y; i < y + height; i++) { |
| 157 | |
| 158 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 159 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 160 | bufptr = dev_info->buf; |
| 161 | } |
| 162 | |
| 163 | rem = width; |
| 164 | |
| 165 | //printk("WRITING LINE %d\n", i); |
| 166 | |
| 167 | while (rem) { |
| 168 | |
| 169 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 170 | ret = |
| 171 | dlfb_bulk_msg(dev_info, |
| 172 | bufptr - dev_info->buf); |
| 173 | bufptr = dev_info->buf; |
| 174 | } |
| 175 | |
| 176 | if (rem > 255) { |
| 177 | |
| 178 | diff = 0; |
| 179 | for (j = 0; j < 510; j++) { |
| 180 | if (dev_info-> |
| 181 | backing_buffer[base + j] != |
| 182 | data[j]) { |
| 183 | diff = 1; |
| 184 | break; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | if (diff == 1) { |
| 189 | *bufptr++ = 0xAF; |
| 190 | *bufptr++ = 0x68; |
| 191 | |
| 192 | *bufptr++ = (char)(base >> 16); |
| 193 | *bufptr++ = (char)(base >> 8); |
| 194 | *bufptr++ = (char)(base); |
| 195 | *bufptr++ = 255; |
| 196 | // PUT COMPRESSION HERE |
| 197 | for (j = 0; j < 510; j += 2) { |
| 198 | bufptr[j] = data[j + 1]; |
| 199 | bufptr[j + 1] = data[j]; |
| 200 | } |
| 201 | bufptr += 510; |
| 202 | } |
| 203 | |
| 204 | rem -= 255; |
| 205 | base += 510; |
| 206 | data += 510; |
| 207 | } else { |
| 208 | |
| 209 | diff = 0; |
| 210 | |
| 211 | for (j = 0; j < rem * 2; j++) { |
| 212 | if (dev_info-> |
| 213 | backing_buffer[base + j] != |
| 214 | data[j]) { |
| 215 | diff = 1; |
| 216 | break; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | if (diff == 1) { |
| 221 | |
| 222 | *bufptr++ = 0xAF; |
| 223 | *bufptr++ = 0x68; |
| 224 | |
| 225 | *bufptr++ = (char)(base >> 16); |
| 226 | *bufptr++ = (char)(base >> 8); |
| 227 | *bufptr++ = (char)(base); |
| 228 | *bufptr++ = rem; |
| 229 | // PUT COMPRESSION HERE |
| 230 | for (j = 0; j < rem * 2; j += 2) { |
| 231 | bufptr[j] = data[j + 1]; |
| 232 | bufptr[j + 1] = data[j]; |
| 233 | } |
| 234 | bufptr += rem * 2; |
| 235 | |
| 236 | } |
| 237 | |
| 238 | base += rem * 2; |
| 239 | data += rem * 2; |
| 240 | rem = 0; |
| 241 | } |
| 242 | |
| 243 | } |
| 244 | |
| 245 | memcpy(dev_info->backing_buffer + base - (width * 2), |
| 246 | data - (width * 2), width * 2); |
| 247 | |
| 248 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 249 | data += (dev_info->info->var.xres * 2) - (width * 2); |
| 250 | |
| 251 | } |
| 252 | |
| 253 | if (bufptr > dev_info->buf) { |
| 254 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 255 | } |
| 256 | |
| 257 | mutex_unlock(&dev_info->bulk_mutex); |
| 258 | |
| 259 | return base; |
| 260 | |
| 261 | } |
| 262 | |
| 263 | static int |
| 264 | draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height, |
| 265 | unsigned char red, unsigned char green, unsigned char blue) |
| 266 | { |
| 267 | |
| 268 | int i, j, base; |
| 269 | int ret; |
| 270 | unsigned short col = |
| 271 | (((((red) & 0xF8) | ((green) >> 5)) & 0xFF) << 8) + |
| 272 | (((((green) & 0x1C) << 3) | ((blue) >> 3)) & 0xFF); |
| 273 | int rem = width; |
| 274 | |
| 275 | char *bufptr; |
| 276 | |
| 277 | if (x + width > dev_info->info->var.xres) { |
| 278 | return -EINVAL; |
| 279 | } |
| 280 | |
| 281 | if (y + height > dev_info->info->var.yres) { |
| 282 | return -EINVAL; |
| 283 | } |
| 284 | |
| 285 | mutex_lock(&dev_info->bulk_mutex); |
| 286 | |
| 287 | base = dev_info->base16 + (dev_info->info->var.xres * 2 * y) + (x * 2); |
| 288 | |
| 289 | bufptr = dev_info->buf; |
| 290 | |
| 291 | for (i = y; i < y + height; i++) { |
| 292 | |
| 293 | for (j = 0; j < width * 2; j += 2) { |
| 294 | dev_info->backing_buffer[base + j] = (char)(col >> 8); |
| 295 | dev_info->backing_buffer[base + j + 1] = (char)(col); |
| 296 | } |
| 297 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 298 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 299 | bufptr = dev_info->buf; |
| 300 | } |
| 301 | |
| 302 | rem = width; |
| 303 | |
| 304 | while (rem) { |
| 305 | |
| 306 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 307 | ret = |
| 308 | dlfb_bulk_msg(dev_info, |
| 309 | bufptr - dev_info->buf); |
| 310 | bufptr = dev_info->buf; |
| 311 | } |
| 312 | |
| 313 | *bufptr++ = 0xAF; |
| 314 | *bufptr++ = 0x69; |
| 315 | |
| 316 | *bufptr++ = (char)(base >> 16); |
| 317 | *bufptr++ = (char)(base >> 8); |
| 318 | *bufptr++ = (char)(base); |
| 319 | |
| 320 | if (rem > 255) { |
| 321 | *bufptr++ = 255; |
| 322 | *bufptr++ = 255; |
| 323 | rem -= 255; |
| 324 | base += 255 * 2; |
| 325 | } else { |
| 326 | *bufptr++ = rem; |
| 327 | *bufptr++ = rem; |
| 328 | base += rem * 2; |
| 329 | rem = 0; |
| 330 | } |
| 331 | |
| 332 | *bufptr++ = (char)(col >> 8); |
| 333 | *bufptr++ = (char)(col); |
| 334 | |
| 335 | } |
| 336 | |
| 337 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 338 | |
| 339 | } |
| 340 | |
| 341 | if (bufptr > dev_info->buf) { |
| 342 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 343 | } |
| 344 | |
| 345 | mutex_unlock(&dev_info->bulk_mutex); |
| 346 | |
| 347 | return 1; |
| 348 | } |
| 349 | |
| 350 | static int |
| 351 | copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy, |
| 352 | int width, int height) |
| 353 | { |
| 354 | |
| 355 | int base; |
| 356 | int source; |
| 357 | int rem; |
| 358 | int i, ret; |
| 359 | |
| 360 | char *bufptr; |
| 361 | |
| 362 | if (dx + width > dev_info->info->var.xres) { |
| 363 | return -EINVAL; |
| 364 | } |
| 365 | |
| 366 | if (dy + height > dev_info->info->var.yres) { |
| 367 | return -EINVAL; |
| 368 | } |
| 369 | |
| 370 | mutex_lock(&dev_info->bulk_mutex); |
| 371 | |
| 372 | base = |
| 373 | dev_info->base16 + (dev_info->info->var.xres * 2 * dy) + (dx * 2); |
| 374 | source = (dev_info->info->var.xres * 2 * sy) + (sx * 2); |
| 375 | |
| 376 | bufptr = dev_info->buf; |
| 377 | |
| 378 | for (i = sy; i < sy + height; i++) { |
| 379 | |
| 380 | memcpy(dev_info->backing_buffer + base, |
| 381 | dev_info->backing_buffer + source, width * 2); |
| 382 | |
| 383 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 384 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 385 | bufptr = dev_info->buf; |
| 386 | } |
| 387 | |
| 388 | rem = width; |
| 389 | |
| 390 | while (rem) { |
| 391 | |
| 392 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 393 | ret = |
| 394 | dlfb_bulk_msg(dev_info, |
| 395 | bufptr - dev_info->buf); |
| 396 | bufptr = dev_info->buf; |
| 397 | } |
| 398 | |
| 399 | *bufptr++ = 0xAF; |
| 400 | *bufptr++ = 0x6A; |
| 401 | |
| 402 | *bufptr++ = (char)(base >> 16); |
| 403 | *bufptr++ = (char)(base >> 8); |
| 404 | *bufptr++ = (char)(base); |
| 405 | |
| 406 | if (rem > 255) { |
| 407 | *bufptr++ = 255; |
| 408 | *bufptr++ = (char)(source >> 16); |
| 409 | *bufptr++ = (char)(source >> 8); |
| 410 | *bufptr++ = (char)(source); |
| 411 | |
| 412 | rem -= 255; |
| 413 | base += 255 * 2; |
| 414 | source += 255 * 2; |
| 415 | |
| 416 | } else { |
| 417 | *bufptr++ = rem; |
| 418 | *bufptr++ = (char)(source >> 16); |
| 419 | *bufptr++ = (char)(source >> 8); |
| 420 | *bufptr++ = (char)(source); |
| 421 | |
| 422 | base += rem * 2; |
| 423 | source += rem * 2; |
| 424 | rem = 0; |
| 425 | } |
| 426 | |
| 427 | } |
| 428 | |
| 429 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 430 | source += (dev_info->info->var.xres * 2) - (width * 2); |
| 431 | |
| 432 | } |
| 433 | |
| 434 | if (bufptr > dev_info->buf) { |
| 435 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 436 | } |
| 437 | |
| 438 | mutex_unlock(&dev_info->bulk_mutex); |
| 439 | |
| 440 | return 1; |
| 441 | } |
| 442 | |
| 443 | void dlfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
| 444 | { |
| 445 | |
| 446 | struct dlfb_data *dev = info->par; |
| 447 | |
| 448 | copyarea(dev, area->dx, area->dy, area->sx, area->sy, area->width, |
| 449 | area->height); |
| 450 | |
| 451 | //printk("COPY AREA %d %d %d %d %d %d !!!\n", area->dx, area->dy, area->sx, area->sy, area->width, area->height); |
| 452 | |
| 453 | } |
| 454 | |
| 455 | void dlfb_imageblit(struct fb_info *info, const struct fb_image *image) |
| 456 | { |
| 457 | |
| 458 | int ret; |
| 459 | struct dlfb_data *dev = info->par; |
| 460 | //printk("IMAGE BLIT (1) %d %d %d %d DEPTH %d {%p}!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev); |
| 461 | cfb_imageblit(info, image); |
| 462 | ret = |
| 463 | image_blit(dev, image->dx, image->dy, image->width, image->height, |
| 464 | info->screen_base); |
| 465 | //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); |
| 466 | } |
| 467 | |
| 468 | void dlfb_fillrect(struct fb_info *info, const struct fb_fillrect *region) |
| 469 | { |
| 470 | |
| 471 | unsigned char red, green, blue; |
| 472 | struct dlfb_data *dev = info->par; |
| 473 | |
| 474 | memcpy(&red, ®ion->color, 1); |
| 475 | memcpy(&green, ®ion->color + 1, 1); |
| 476 | memcpy(&blue, ®ion->color + 2, 1); |
| 477 | draw_rect(dev, region->dx, region->dy, region->width, region->height, |
| 478 | red, green, blue); |
| 479 | //printk("FILL RECT %d %d !!!\n", region->dx, region->dy); |
| 480 | |
| 481 | } |
| 482 | |
| 483 | static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
| 484 | { |
| 485 | |
| 486 | struct dlfb_data *dev_info = info->par; |
| 487 | struct dloarea *area; |
| 488 | |
| 489 | if (cmd == 0xAA) { |
| 490 | |
| 491 | area = (struct dloarea *)arg; |
| 492 | |
| 493 | if (area->x < 0) |
| 494 | area->x = 0; |
| 495 | |
| 496 | if (area->x > info->var.xres) |
| 497 | area->x = info->var.xres; |
| 498 | |
| 499 | if (area->y < 0) |
| 500 | area->y = 0; |
| 501 | |
| 502 | if (area->y > info->var.yres) |
| 503 | area->y = info->var.yres; |
| 504 | |
| 505 | image_blit(dev_info, area->x, area->y, area->w, area->h, |
| 506 | info->screen_base); |
| 507 | } |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | // taken from vesafb |
| 512 | |
| 513 | static int |
| 514 | dlfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| 515 | unsigned blue, unsigned transp, struct fb_info *info) |
| 516 | { |
| 517 | int err = 0; |
| 518 | |
| 519 | if (regno >= info->cmap.len) |
| 520 | return 1; |
| 521 | |
| 522 | if (regno < 16) { |
| 523 | if (info->var.red.offset == 10) { |
| 524 | /* 1:5:5:5 */ |
| 525 | ((u32 *) (info->pseudo_palette))[regno] = |
| 526 | ((red & 0xf800) >> 1) | |
| 527 | ((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11); |
| 528 | } else { |
| 529 | /* 0:5:6:5 */ |
| 530 | ((u32 *) (info->pseudo_palette))[regno] = |
| 531 | ((red & 0xf800)) | |
| 532 | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | return err; |
| 537 | } |
| 538 | |
| 539 | static int dlfb_release(struct fb_info *info, int user) |
| 540 | { |
| 541 | struct dlfb_data *dev_info = info->par; |
| 542 | image_blit(dev_info, 0, 0, info->var.xres, info->var.yres, |
| 543 | info->screen_base); |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | static int dlfb_blank(int blank_mode, struct fb_info *info) { |
| 548 | return 0; |
| 549 | } |
| 550 | |
| 551 | static struct fb_ops dlfb_ops = { |
| 552 | |
| 553 | .fb_setcolreg = dlfb_setcolreg, |
| 554 | .fb_fillrect = dlfb_fillrect, |
| 555 | .fb_copyarea = dlfb_copyarea, |
| 556 | .fb_imageblit = dlfb_imageblit, |
| 557 | .fb_mmap = dlfb_mmap, |
| 558 | .fb_ioctl = dlfb_ioctl, |
| 559 | .fb_release = dlfb_release, |
| 560 | .fb_blank = dlfb_blank, |
| 561 | }; |
| 562 | |
| 563 | static int |
| 564 | dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id) |
| 565 | { |
| 566 | struct dlfb_data *dev_info; |
| 567 | struct fb_info *info; |
| 568 | int i; |
| 569 | |
| 570 | int ret; |
| 571 | char rbuf[4]; |
| 572 | |
| 573 | dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL); |
| 574 | if (dev_info == NULL) { |
| 575 | printk("cannot allocate dev_info structure.\n"); |
| 576 | return -ENOMEM; |
| 577 | } |
| 578 | |
| 579 | mutex_init(&dev_info->bulk_mutex); |
| 580 | |
| 581 | dev_info->udev = usb_get_dev(interface_to_usbdev(interface)); |
| 582 | dev_info->interface = interface; |
| 583 | |
| 584 | printk("DisplayLink device attached\n"); |
| 585 | |
| 586 | // add framebuffer info to usb interface |
| 587 | usb_set_intfdata(interface, dev_info); |
| 588 | |
| 589 | dev_info->buf = kmalloc(BUF_SIZE, GFP_KERNEL); //usb_buffer_alloc(dev_info->udev, BUF_SIZE , GFP_KERNEL, &dev_info->tx_urb->transfer_dma); |
| 590 | |
| 591 | if (dev_info->buf == NULL) { |
| 592 | printk("unable to allocate memory for dlfb commands\n"); |
| 593 | goto out; |
| 594 | } |
| 595 | dev_info->bufend = dev_info->buf + BUF_SIZE; |
| 596 | |
| 597 | dev_info->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 598 | usb_fill_bulk_urb(dev_info->tx_urb, dev_info->udev, |
| 599 | usb_sndbulkpipe(dev_info->udev, 1), dev_info->buf, 0, |
| 600 | dlfb_bulk_callback, dev_info); |
| 601 | |
| 602 | ret = |
| 603 | usb_control_msg(dev_info->udev, usb_rcvctrlpipe(dev_info->udev, 0), |
| 604 | (0x06), (0x80 | (0x02 << 5)), 0, 0, rbuf, 4, 0); |
| 605 | printk("ret control msg 0: %d %x%x%x%x\n", ret, rbuf[0], rbuf[1], |
| 606 | rbuf[2], rbuf[3]); |
| 607 | |
| 608 | for (i = 0; i < 128; i++) { |
| 609 | ret = |
| 610 | usb_control_msg(dev_info->udev, |
| 611 | usb_rcvctrlpipe(dev_info->udev, 0), (0x02), |
| 612 | (0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2, |
| 613 | 0); |
| 614 | //printk("ret control msg edid %d: %d [%d]\n",i, ret, rbuf[1]); |
| 615 | dev_info->edid[i] = rbuf[1]; |
| 616 | } |
| 617 | |
| 618 | info = framebuffer_alloc(sizeof(u32) * 256, &dev_info->udev->dev); |
| 619 | |
| 620 | if (!info) { |
| 621 | printk("non posso allocare il framebuffer displaylink"); |
| 622 | goto out; |
| 623 | } |
| 624 | |
| 625 | fb_parse_edid(dev_info->edid, &info->var); |
| 626 | |
| 627 | printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres); |
| 628 | |
| 629 | if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) { |
| 630 | goto out; |
| 631 | } |
| 632 | |
| 633 | printk("found valid mode...%d\n", info->var.pixclock); |
| 634 | |
| 635 | info->pseudo_palette = info->par; |
| 636 | info->par = dev_info; |
| 637 | |
| 638 | dev_info->info = info; |
| 639 | |
| 640 | info->flags = |
| 641 | FBINFO_DEFAULT | FBINFO_READS_FAST | FBINFO_HWACCEL_IMAGEBLIT | |
| 642 | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; |
| 643 | info->fbops = &dlfb_ops; |
| 644 | info->screen_base = rvmalloc(dev_info->screen_size); |
| 645 | |
| 646 | if (info->screen_base == NULL) { |
| 647 | printk |
| 648 | ("cannot allocate framebuffer virtual memory of %d bytes\n", |
| 649 | dev_info->screen_size); |
| 650 | goto out0; |
| 651 | } |
| 652 | |
| 653 | printk("screen base allocated !!!\n"); |
| 654 | |
| 655 | dev_info->backing_buffer = kzalloc(dev_info->screen_size, GFP_KERNEL); |
| 656 | |
| 657 | if (!dev_info->backing_buffer) { |
| 658 | printk("non posso allocare il backing buffer\n"); |
| 659 | } |
| 660 | //info->var = dev_info->si; |
| 661 | |
| 662 | info->var.bits_per_pixel = 16; |
| 663 | info->var.activate = FB_ACTIVATE_TEST; |
| 664 | info->var.vmode = FB_VMODE_NONINTERLACED; |
| 665 | |
| 666 | info->var.red.offset = 11; |
| 667 | info->var.red.length = 5; |
| 668 | info->var.red.msb_right = 0; |
| 669 | |
| 670 | info->var.green.offset = 5; |
| 671 | info->var.green.length = 6; |
| 672 | info->var.green.msb_right = 0; |
| 673 | |
| 674 | info->var.blue.offset = 0; |
| 675 | info->var.blue.length = 5; |
| 676 | info->var.blue.msb_right = 0; |
| 677 | |
| 678 | //info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ; |
| 679 | |
| 680 | info->fix.smem_start = (unsigned long)info->screen_base; |
| 681 | info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size); |
| 682 | memcpy(info->fix.id, "DisplayLink FB", 14); |
| 683 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
| 684 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
| 685 | info->fix.accel = info->flags; |
| 686 | info->fix.line_length = dev_info->line_length; |
| 687 | |
| 688 | if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { |
| 689 | goto out1; |
| 690 | } |
| 691 | |
| 692 | printk("colormap allocated\n"); |
| 693 | if (register_framebuffer(info) < 0) { |
| 694 | goto out2; |
| 695 | } |
| 696 | |
| 697 | draw_rect(dev_info, 0, 0, dev_info->info->var.xres, |
| 698 | dev_info->info->var.yres, 0x30, 0xff, 0x30); |
| 699 | |
| 700 | return 0; |
| 701 | |
| 702 | out2: |
| 703 | fb_dealloc_cmap(&info->cmap); |
| 704 | out1: |
| 705 | rvfree(info->screen_base, dev_info->screen_size); |
| 706 | out0: |
| 707 | framebuffer_release(info); |
| 708 | out: |
| 709 | usb_set_intfdata(interface, NULL); |
| 710 | usb_put_dev(dev_info->udev); |
| 711 | kfree(dev_info); |
| 712 | return -ENOMEM; |
| 713 | |
| 714 | } |
| 715 | |
| 716 | static void dlfb_disconnect(struct usb_interface *interface) |
| 717 | { |
| 718 | struct dlfb_data *dev_info = usb_get_intfdata(interface); |
| 719 | |
| 720 | mutex_unlock(&dev_info->bulk_mutex); |
| 721 | |
| 722 | usb_kill_urb(dev_info->tx_urb); |
| 723 | usb_free_urb(dev_info->tx_urb); |
| 724 | usb_set_intfdata(interface, NULL); |
| 725 | usb_put_dev(dev_info->udev); |
| 726 | |
| 727 | if (dev_info->info) { |
| 728 | unregister_framebuffer(dev_info->info); |
| 729 | fb_dealloc_cmap(&dev_info->info->cmap); |
| 730 | rvfree(dev_info->info->screen_base, dev_info->screen_size); |
| 731 | kfree(dev_info->backing_buffer); |
| 732 | framebuffer_release(dev_info->info); |
| 733 | |
| 734 | } |
| 735 | |
| 736 | kfree(dev_info); |
| 737 | |
| 738 | printk("DisplayLink device disconnected\n"); |
| 739 | } |
| 740 | |
| 741 | static struct usb_driver dlfb_driver = { |
| 742 | .name = "udlfb", |
| 743 | .probe = dlfb_probe, |
| 744 | .disconnect = dlfb_disconnect, |
| 745 | .id_table = id_table, |
| 746 | }; |
| 747 | |
| 748 | static int __init dlfb_init(void) |
| 749 | { |
| 750 | int res; |
| 751 | |
| 752 | dlfb_init_modes(); |
| 753 | |
| 754 | res = usb_register(&dlfb_driver); |
| 755 | if (res) |
| 756 | err("usb_register failed. Error number %d", res); |
| 757 | |
| 758 | printk("VMODES initialized\n"); |
| 759 | |
| 760 | return res; |
| 761 | } |
| 762 | |
| 763 | static void __exit dlfb_exit(void) |
| 764 | { |
| 765 | usb_deregister(&dlfb_driver); |
| 766 | } |
| 767 | |
| 768 | module_init(dlfb_init); |
| 769 | module_exit(dlfb_exit); |
| 770 | |
| 771 | MODULE_AUTHOR("Roberto De Ioris <roberto@unbit.it>"); |
| 772 | MODULE_DESCRIPTION(DRIVER_VERSION); |
| 773 | MODULE_LICENSE("GPL"); |