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 | * * |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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) * |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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> |
| 24 | |
| 25 | #include "udlfb.h" |
| 26 | |
| 27 | #define DRIVER_VERSION "DLFB 0.2" |
| 28 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 29 | /* memory functions taken from vfb */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 30 | |
| 31 | static void *rvmalloc(unsigned long size) |
| 32 | { |
| 33 | void *mem; |
| 34 | unsigned long adr; |
| 35 | |
| 36 | size = PAGE_ALIGN(size); |
| 37 | mem = vmalloc_32(size); |
| 38 | if (!mem) |
| 39 | return NULL; |
| 40 | |
| 41 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| 42 | adr = (unsigned long)mem; |
| 43 | while (size > 0) { |
| 44 | SetPageReserved(vmalloc_to_page((void *)adr)); |
| 45 | adr += PAGE_SIZE; |
| 46 | size -= PAGE_SIZE; |
| 47 | } |
| 48 | |
| 49 | return mem; |
| 50 | } |
| 51 | |
| 52 | static void rvfree(void *mem, unsigned long size) |
| 53 | { |
| 54 | unsigned long adr; |
| 55 | |
| 56 | if (!mem) |
| 57 | return; |
| 58 | |
| 59 | adr = (unsigned long)mem; |
| 60 | while ((long)size > 0) { |
| 61 | ClearPageReserved(vmalloc_to_page((void *)adr)); |
| 62 | adr += PAGE_SIZE; |
| 63 | size -= PAGE_SIZE; |
| 64 | } |
| 65 | vfree(mem); |
| 66 | } |
| 67 | |
| 68 | static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma) |
| 69 | { |
| 70 | unsigned long start = vma->vm_start; |
| 71 | unsigned long size = vma->vm_end - vma->vm_start; |
| 72 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; |
| 73 | unsigned long page, pos; |
| 74 | |
| 75 | printk("MMAP: %lu %u\n", offset + size, info->fix.smem_len); |
| 76 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 77 | if (offset + size > info->fix.smem_len) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 78 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 79 | |
| 80 | pos = (unsigned long)info->fix.smem_start + offset; |
| 81 | |
| 82 | while (size > 0) { |
| 83 | page = vmalloc_to_pfn((void *)pos); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 84 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 85 | return -EAGAIN; |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 86 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 87 | start += PAGE_SIZE; |
| 88 | pos += PAGE_SIZE; |
| 89 | if (size > PAGE_SIZE) |
| 90 | size -= PAGE_SIZE; |
| 91 | else |
| 92 | size = 0; |
| 93 | } |
| 94 | |
| 95 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ |
| 96 | return 0; |
| 97 | |
| 98 | } |
| 99 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 100 | /* ioctl structure */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 101 | struct dloarea { |
| 102 | int x, y; |
| 103 | int w, h; |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 104 | int x2, y2; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 105 | }; |
| 106 | |
| 107 | /* |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 108 | static struct usb_device_id id_table [] = { |
| 109 | { USB_DEVICE(0x17e9, 0x023d) }, |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 110 | { } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 111 | }; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 112 | */ |
| 113 | |
| 114 | static struct usb_device_id id_table[] = { |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 115 | {.idVendor = 0x17e9, .match_flags = USB_DEVICE_ID_MATCH_VENDOR,}, |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 116 | {}, |
| 117 | }; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 118 | MODULE_DEVICE_TABLE(usb, id_table); |
| 119 | |
| 120 | static struct usb_driver dlfb_driver; |
| 121 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 122 | // thanks to Henrik Bjerregaard Pedersen for this function |
| 123 | static char *rle_compress16(uint16_t * src, char *dst, int rem) |
| 124 | { |
| 125 | |
| 126 | int rl; |
| 127 | uint16_t pix0; |
| 128 | char *end_if_raw = dst + 6 + 2 * rem; |
| 129 | |
| 130 | dst += 6; // header will be filled in if RLE is worth it |
| 131 | |
| 132 | while (rem && dst < end_if_raw) { |
| 133 | char *start = (char *)src; |
| 134 | |
| 135 | pix0 = *src++; |
| 136 | rl = 1; |
| 137 | rem--; |
| 138 | while (rem && *src == pix0) |
| 139 | rem--, rl++, src++; |
| 140 | *dst++ = rl; |
| 141 | *dst++ = start[1]; |
| 142 | *dst++ = start[0]; |
| 143 | } |
| 144 | |
| 145 | return dst; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | Thanks to Henrik Bjerregaard Pedersen for rle implementation and code refactoring. |
| 150 | Next step is huffman compression. |
| 151 | */ |
| 152 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 153 | static int |
| 154 | image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height, |
| 155 | char *data) |
| 156 | { |
| 157 | |
| 158 | int i, j, base; |
| 159 | int rem = width; |
| 160 | int ret; |
| 161 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 162 | int firstdiff, thistime; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 163 | |
| 164 | char *bufptr; |
| 165 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 166 | if (x + width > dev_info->info->var.xres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 167 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 168 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 169 | if (y + height > dev_info->info->var.yres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 170 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 171 | |
| 172 | mutex_lock(&dev_info->bulk_mutex); |
| 173 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 174 | base = |
| 175 | dev_info->base16 + ((dev_info->info->var.xres * 2 * y) + (x * 2)); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 176 | |
| 177 | data += (dev_info->info->var.xres * 2 * y) + (x * 2); |
| 178 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 179 | /* printk("IMAGE_BLIT\n"); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 180 | |
| 181 | bufptr = dev_info->buf; |
| 182 | |
| 183 | for (i = y; i < y + height; i++) { |
| 184 | |
| 185 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 186 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 187 | bufptr = dev_info->buf; |
| 188 | } |
| 189 | |
| 190 | rem = width; |
| 191 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 192 | /* printk("WRITING LINE %d\n", i); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 193 | |
| 194 | while (rem) { |
| 195 | |
| 196 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 197 | ret = |
| 198 | dlfb_bulk_msg(dev_info, |
| 199 | bufptr - dev_info->buf); |
| 200 | bufptr = dev_info->buf; |
| 201 | } |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 202 | // number of pixels to consider this time |
| 203 | thistime = rem; |
| 204 | if (thistime > 255) |
| 205 | thistime = 255; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 206 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 207 | // find position of first pixel that has changed |
| 208 | firstdiff = -1; |
| 209 | for (j = 0; j < thistime * 2; j++) { |
| 210 | if (dev_info->backing_buffer |
| 211 | [base - dev_info->base16 + j] != data[j]) { |
| 212 | firstdiff = j / 2; |
| 213 | break; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 214 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 215 | } |
| 216 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 217 | if (firstdiff >= 0) { |
| 218 | char *end_of_rle; |
| 219 | |
| 220 | end_of_rle = |
| 221 | rle_compress16((uint16_t *) (data + |
| 222 | firstdiff * 2), |
| 223 | bufptr, |
| 224 | thistime - firstdiff); |
| 225 | |
| 226 | if (end_of_rle < |
| 227 | bufptr + 6 + 2 * (thistime - firstdiff)) { |
| 228 | bufptr[0] = 0xAF; |
| 229 | bufptr[1] = 0x69; |
| 230 | |
| 231 | bufptr[2] = |
| 232 | (char)((base + |
| 233 | firstdiff * 2) >> 16); |
| 234 | bufptr[3] = |
| 235 | (char)((base + firstdiff * 2) >> 8); |
| 236 | bufptr[4] = |
| 237 | (char)(base + firstdiff * 2); |
| 238 | bufptr[5] = thistime - firstdiff; |
| 239 | |
| 240 | bufptr = end_of_rle; |
| 241 | |
| 242 | } else { |
| 243 | // fallback to raw (or some other encoding?) |
| 244 | *bufptr++ = 0xAF; |
| 245 | *bufptr++ = 0x68; |
| 246 | |
| 247 | *bufptr++ = |
| 248 | (char)((base + |
| 249 | firstdiff * 2) >> 16); |
| 250 | *bufptr++ = |
| 251 | (char)((base + firstdiff * 2) >> 8); |
| 252 | *bufptr++ = |
| 253 | (char)(base + firstdiff * 2); |
| 254 | *bufptr++ = thistime - firstdiff; |
| 255 | // PUT COMPRESSION HERE |
| 256 | for (j = firstdiff * 2; |
| 257 | j < thistime * 2; j += 2) { |
| 258 | *bufptr++ = data[j + 1]; |
| 259 | *bufptr++ = data[j]; |
| 260 | } |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | base += thistime * 2; |
| 265 | data += thistime * 2; |
| 266 | rem -= thistime; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 269 | memcpy(dev_info->backing_buffer + (base - dev_info->base16) - |
| 270 | (width * 2), data - (width * 2), width * 2); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 271 | |
| 272 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 273 | data += (dev_info->info->var.xres * 2) - (width * 2); |
| 274 | |
| 275 | } |
| 276 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 277 | if (bufptr > dev_info->buf) { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 278 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 279 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 280 | |
| 281 | mutex_unlock(&dev_info->bulk_mutex); |
| 282 | |
| 283 | return base; |
| 284 | |
| 285 | } |
| 286 | |
| 287 | static int |
| 288 | draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height, |
| 289 | unsigned char red, unsigned char green, unsigned char blue) |
| 290 | { |
| 291 | |
| 292 | int i, j, base; |
| 293 | int ret; |
| 294 | unsigned short col = |
| 295 | (((((red) & 0xF8) | ((green) >> 5)) & 0xFF) << 8) + |
| 296 | (((((green) & 0x1C) << 3) | ((blue) >> 3)) & 0xFF); |
| 297 | int rem = width; |
| 298 | |
| 299 | char *bufptr; |
| 300 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 301 | if (x + width > dev_info->info->var.xres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 302 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 303 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 304 | if (y + height > dev_info->info->var.yres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 305 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 306 | |
| 307 | mutex_lock(&dev_info->bulk_mutex); |
| 308 | |
| 309 | base = dev_info->base16 + (dev_info->info->var.xres * 2 * y) + (x * 2); |
| 310 | |
| 311 | bufptr = dev_info->buf; |
| 312 | |
| 313 | for (i = y; i < y + height; i++) { |
| 314 | |
| 315 | for (j = 0; j < width * 2; j += 2) { |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 316 | dev_info->backing_buffer[base - dev_info->base16 + j] = |
| 317 | (char)(col >> 8); |
| 318 | dev_info->backing_buffer[base - dev_info->base16 + j + |
| 319 | 1] = (char)(col); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 320 | } |
| 321 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 322 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 323 | bufptr = dev_info->buf; |
| 324 | } |
| 325 | |
| 326 | rem = width; |
| 327 | |
| 328 | while (rem) { |
| 329 | |
| 330 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 331 | ret = |
| 332 | dlfb_bulk_msg(dev_info, |
| 333 | bufptr - dev_info->buf); |
| 334 | bufptr = dev_info->buf; |
| 335 | } |
| 336 | |
| 337 | *bufptr++ = 0xAF; |
| 338 | *bufptr++ = 0x69; |
| 339 | |
| 340 | *bufptr++ = (char)(base >> 16); |
| 341 | *bufptr++ = (char)(base >> 8); |
| 342 | *bufptr++ = (char)(base); |
| 343 | |
| 344 | if (rem > 255) { |
| 345 | *bufptr++ = 255; |
| 346 | *bufptr++ = 255; |
| 347 | rem -= 255; |
| 348 | base += 255 * 2; |
| 349 | } else { |
| 350 | *bufptr++ = rem; |
| 351 | *bufptr++ = rem; |
| 352 | base += rem * 2; |
| 353 | rem = 0; |
| 354 | } |
| 355 | |
| 356 | *bufptr++ = (char)(col >> 8); |
| 357 | *bufptr++ = (char)(col); |
| 358 | |
| 359 | } |
| 360 | |
| 361 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 362 | |
| 363 | } |
| 364 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 365 | if (bufptr > dev_info->buf) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 366 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 367 | |
| 368 | mutex_unlock(&dev_info->bulk_mutex); |
| 369 | |
| 370 | return 1; |
| 371 | } |
| 372 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 373 | static void swapfb(struct dlfb_data *dev_info) |
| 374 | { |
| 375 | |
| 376 | int tmpbase; |
| 377 | char *bufptr; |
| 378 | |
| 379 | mutex_lock(&dev_info->bulk_mutex); |
| 380 | |
| 381 | tmpbase = dev_info->base16; |
| 382 | |
| 383 | dev_info->base16 = dev_info->base16d; |
| 384 | dev_info->base16d = tmpbase; |
| 385 | |
| 386 | bufptr = dev_info->buf; |
| 387 | |
| 388 | bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); |
| 389 | |
| 390 | // set addresses |
| 391 | bufptr = |
| 392 | dlfb_set_register(bufptr, 0x20, (char)(dev_info->base16 >> 16)); |
| 393 | bufptr = dlfb_set_register(bufptr, 0x21, (char)(dev_info->base16 >> 8)); |
| 394 | bufptr = dlfb_set_register(bufptr, 0x22, (char)(dev_info->base16)); |
| 395 | |
| 396 | bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); |
| 397 | |
| 398 | dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 399 | |
| 400 | mutex_unlock(&dev_info->bulk_mutex); |
| 401 | } |
| 402 | |
| 403 | static int copyfb(struct dlfb_data *dev_info) |
| 404 | { |
| 405 | int base; |
| 406 | int source; |
| 407 | int rem; |
| 408 | int i, ret; |
| 409 | |
| 410 | char *bufptr; |
| 411 | |
| 412 | base = dev_info->base16d; |
| 413 | |
| 414 | mutex_lock(&dev_info->bulk_mutex); |
| 415 | |
| 416 | source = dev_info->base16; |
| 417 | |
| 418 | bufptr = dev_info->buf; |
| 419 | |
| 420 | for (i = 0; i < dev_info->info->var.yres; i++) { |
| 421 | |
| 422 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 423 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 424 | bufptr = dev_info->buf; |
| 425 | } |
| 426 | |
| 427 | rem = dev_info->info->var.xres; |
| 428 | |
| 429 | while (rem) { |
| 430 | |
| 431 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 432 | ret = |
| 433 | dlfb_bulk_msg(dev_info, |
| 434 | bufptr - dev_info->buf); |
| 435 | bufptr = dev_info->buf; |
| 436 | |
| 437 | } |
| 438 | |
| 439 | *bufptr++ = 0xAF; |
| 440 | *bufptr++ = 0x6A; |
| 441 | |
| 442 | *bufptr++ = (char)(base >> 16); |
| 443 | *bufptr++ = (char)(base >> 8); |
| 444 | *bufptr++ = (char)(base); |
| 445 | |
| 446 | if (rem > 255) { |
| 447 | *bufptr++ = 255; |
| 448 | *bufptr++ = (char)(source >> 16); |
| 449 | *bufptr++ = (char)(source >> 8); |
| 450 | *bufptr++ = (char)(source); |
| 451 | |
| 452 | rem -= 255; |
| 453 | base += 255 * 2; |
| 454 | source += 255 * 2; |
| 455 | |
| 456 | } else { |
| 457 | *bufptr++ = rem; |
| 458 | *bufptr++ = (char)(source >> 16); |
| 459 | *bufptr++ = (char)(source >> 8); |
| 460 | *bufptr++ = (char)(source); |
| 461 | |
| 462 | base += rem * 2; |
| 463 | source += rem * 2; |
| 464 | rem = 0; |
| 465 | } |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | if (bufptr > dev_info->buf) |
| 470 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 471 | |
| 472 | mutex_unlock(&dev_info->bulk_mutex); |
| 473 | |
| 474 | return 1; |
| 475 | |
| 476 | } |
| 477 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 478 | static int |
| 479 | copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy, |
| 480 | int width, int height) |
| 481 | { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 482 | int base; |
| 483 | int source; |
| 484 | int rem; |
| 485 | int i, ret; |
| 486 | |
| 487 | char *bufptr; |
| 488 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 489 | if (dx + width > dev_info->info->var.xres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 490 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 491 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 492 | if (dy + height > dev_info->info->var.yres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 493 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 494 | |
| 495 | mutex_lock(&dev_info->bulk_mutex); |
| 496 | |
| 497 | base = |
| 498 | dev_info->base16 + (dev_info->info->var.xres * 2 * dy) + (dx * 2); |
| 499 | source = (dev_info->info->var.xres * 2 * sy) + (sx * 2); |
| 500 | |
| 501 | bufptr = dev_info->buf; |
| 502 | |
| 503 | for (i = sy; i < sy + height; i++) { |
| 504 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 505 | memcpy(dev_info->backing_buffer + base - dev_info->base16, |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 506 | dev_info->backing_buffer + source, width * 2); |
| 507 | |
| 508 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 509 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 510 | bufptr = dev_info->buf; |
| 511 | } |
| 512 | |
| 513 | rem = width; |
| 514 | |
| 515 | while (rem) { |
| 516 | |
| 517 | if (dev_info->bufend - bufptr < BUF_HIGH_WATER_MARK) { |
| 518 | ret = |
| 519 | dlfb_bulk_msg(dev_info, |
| 520 | bufptr - dev_info->buf); |
| 521 | bufptr = dev_info->buf; |
| 522 | } |
| 523 | |
| 524 | *bufptr++ = 0xAF; |
| 525 | *bufptr++ = 0x6A; |
| 526 | |
| 527 | *bufptr++ = (char)(base >> 16); |
| 528 | *bufptr++ = (char)(base >> 8); |
| 529 | *bufptr++ = (char)(base); |
| 530 | |
| 531 | if (rem > 255) { |
| 532 | *bufptr++ = 255; |
| 533 | *bufptr++ = (char)(source >> 16); |
| 534 | *bufptr++ = (char)(source >> 8); |
| 535 | *bufptr++ = (char)(source); |
| 536 | |
| 537 | rem -= 255; |
| 538 | base += 255 * 2; |
| 539 | source += 255 * 2; |
| 540 | |
| 541 | } else { |
| 542 | *bufptr++ = rem; |
| 543 | *bufptr++ = (char)(source >> 16); |
| 544 | *bufptr++ = (char)(source >> 8); |
| 545 | *bufptr++ = (char)(source); |
| 546 | |
| 547 | base += rem * 2; |
| 548 | source += rem * 2; |
| 549 | rem = 0; |
| 550 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 554 | source += (dev_info->info->var.xres * 2) - (width * 2); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 555 | } |
| 556 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 557 | if (bufptr > dev_info->buf) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 558 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 559 | |
| 560 | mutex_unlock(&dev_info->bulk_mutex); |
| 561 | |
| 562 | return 1; |
| 563 | } |
| 564 | |
Greg Kroah-Hartman | 4b6a485 | 2009-06-03 14:47:21 -0700 | [diff] [blame] | 565 | static void dlfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 566 | { |
| 567 | |
| 568 | struct dlfb_data *dev = info->par; |
| 569 | |
| 570 | copyarea(dev, area->dx, area->dy, area->sx, area->sy, area->width, |
| 571 | area->height); |
| 572 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 573 | /* printk("COPY AREA %d %d %d %d %d %d !!!\n", area->dx, area->dy, area->sx, area->sy, area->width, area->height); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 574 | |
| 575 | } |
| 576 | |
Greg Kroah-Hartman | 4b6a485 | 2009-06-03 14:47:21 -0700 | [diff] [blame] | 577 | static void dlfb_imageblit(struct fb_info *info, const struct fb_image *image) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 578 | { |
| 579 | |
| 580 | int ret; |
| 581 | struct dlfb_data *dev = info->par; |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 582 | /* printk("IMAGE BLIT (1) %d %d %d %d DEPTH %d {%p}!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 583 | cfb_imageblit(info, image); |
| 584 | ret = |
| 585 | image_blit(dev, image->dx, image->dy, image->width, image->height, |
| 586 | info->screen_base); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 587 | /* 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); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 588 | } |
| 589 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 590 | static void dlfb_fillrect(struct fb_info *info, |
| 591 | const struct fb_fillrect *region) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 592 | { |
| 593 | |
| 594 | unsigned char red, green, blue; |
| 595 | struct dlfb_data *dev = info->par; |
| 596 | |
| 597 | memcpy(&red, ®ion->color, 1); |
| 598 | memcpy(&green, ®ion->color + 1, 1); |
| 599 | memcpy(&blue, ®ion->color + 2, 1); |
| 600 | draw_rect(dev, region->dx, region->dy, region->width, region->height, |
| 601 | red, green, blue); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 602 | /* printk("FILL RECT %d %d !!!\n", region->dx, region->dy); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 603 | |
| 604 | } |
| 605 | |
| 606 | static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
| 607 | { |
| 608 | |
| 609 | struct dlfb_data *dev_info = info->par; |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 610 | struct dloarea *area = NULL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 611 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 612 | if (cmd == 0xAD) { |
| 613 | char *edid = (char *)arg; |
| 614 | dlfb_edid(dev_info); |
| 615 | if (copy_to_user(edid, dev_info->edid, 128)) { |
| 616 | return -EFAULT; |
| 617 | } |
| 618 | return 0; |
| 619 | } |
| 620 | |
| 621 | if (cmd == 0xAA || cmd == 0xAB || cmd == 0xAC) { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 622 | |
| 623 | area = (struct dloarea *)arg; |
| 624 | |
| 625 | if (area->x < 0) |
| 626 | area->x = 0; |
| 627 | |
| 628 | if (area->x > info->var.xres) |
| 629 | area->x = info->var.xres; |
| 630 | |
| 631 | if (area->y < 0) |
| 632 | area->y = 0; |
| 633 | |
| 634 | if (area->y > info->var.yres) |
| 635 | area->y = info->var.yres; |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 636 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 637 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 638 | if (cmd == 0xAA) { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 639 | image_blit(dev_info, area->x, area->y, area->w, area->h, |
| 640 | info->screen_base); |
| 641 | } |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 642 | if (cmd == 0xAC) { |
| 643 | copyfb(dev_info); |
| 644 | image_blit(dev_info, area->x, area->y, area->w, area->h, |
| 645 | info->screen_base); |
| 646 | swapfb(dev_info); |
| 647 | } else if (cmd == 0xAB) { |
| 648 | |
| 649 | if (area->x2 < 0) |
| 650 | area->x2 = 0; |
| 651 | |
| 652 | if (area->y2 < 0) |
| 653 | area->y2 = 0; |
| 654 | |
| 655 | copyarea(dev_info, |
| 656 | area->x2, area->y2, area->x, area->y, area->w, |
| 657 | area->h); |
| 658 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 659 | return 0; |
| 660 | } |
| 661 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 662 | /* taken from vesafb */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 663 | |
| 664 | static int |
| 665 | dlfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| 666 | unsigned blue, unsigned transp, struct fb_info *info) |
| 667 | { |
| 668 | int err = 0; |
| 669 | |
| 670 | if (regno >= info->cmap.len) |
| 671 | return 1; |
| 672 | |
| 673 | if (regno < 16) { |
| 674 | if (info->var.red.offset == 10) { |
| 675 | /* 1:5:5:5 */ |
| 676 | ((u32 *) (info->pseudo_palette))[regno] = |
| 677 | ((red & 0xf800) >> 1) | |
| 678 | ((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11); |
| 679 | } else { |
| 680 | /* 0:5:6:5 */ |
| 681 | ((u32 *) (info->pseudo_palette))[regno] = |
| 682 | ((red & 0xf800)) | |
| 683 | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | return err; |
| 688 | } |
| 689 | |
| 690 | static int dlfb_release(struct fb_info *info, int user) |
| 691 | { |
| 692 | struct dlfb_data *dev_info = info->par; |
| 693 | image_blit(dev_info, 0, 0, info->var.xres, info->var.yres, |
| 694 | info->screen_base); |
| 695 | return 0; |
| 696 | } |
| 697 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 698 | static int dlfb_blank(int blank_mode, struct fb_info *info) |
| 699 | { |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 700 | struct dlfb_data *dev_info = info->par; |
| 701 | char *bufptr = dev_info->buf; |
| 702 | |
| 703 | bufptr = dlfb_set_register(bufptr, 0xFF, 0x00); |
| 704 | if (blank_mode != FB_BLANK_UNBLANK) { |
| 705 | bufptr = dlfb_set_register(bufptr, 0x1F, 0x01); |
| 706 | } else { |
| 707 | bufptr = dlfb_set_register(bufptr, 0x1F, 0x00); |
| 708 | } |
| 709 | bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF); |
| 710 | |
| 711 | dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
| 712 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | static struct fb_ops dlfb_ops = { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 717 | .fb_setcolreg = dlfb_setcolreg, |
| 718 | .fb_fillrect = dlfb_fillrect, |
| 719 | .fb_copyarea = dlfb_copyarea, |
| 720 | .fb_imageblit = dlfb_imageblit, |
| 721 | .fb_mmap = dlfb_mmap, |
| 722 | .fb_ioctl = dlfb_ioctl, |
| 723 | .fb_release = dlfb_release, |
| 724 | .fb_blank = dlfb_blank, |
| 725 | }; |
| 726 | |
| 727 | static int |
| 728 | dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id) |
| 729 | { |
| 730 | struct dlfb_data *dev_info; |
| 731 | struct fb_info *info; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 732 | |
| 733 | int ret; |
| 734 | char rbuf[4]; |
| 735 | |
| 736 | dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL); |
| 737 | if (dev_info == NULL) { |
| 738 | printk("cannot allocate dev_info structure.\n"); |
| 739 | return -ENOMEM; |
| 740 | } |
| 741 | |
| 742 | mutex_init(&dev_info->bulk_mutex); |
| 743 | |
| 744 | dev_info->udev = usb_get_dev(interface_to_usbdev(interface)); |
| 745 | dev_info->interface = interface; |
| 746 | |
| 747 | printk("DisplayLink device attached\n"); |
| 748 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 749 | /* add framebuffer info to usb interface */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 750 | usb_set_intfdata(interface, dev_info); |
| 751 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 752 | dev_info->buf = kmalloc(BUF_SIZE, GFP_KERNEL); |
| 753 | /* usb_buffer_alloc(dev_info->udev, BUF_SIZE , GFP_KERNEL, &dev_info->tx_urb->transfer_dma); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 754 | |
| 755 | if (dev_info->buf == NULL) { |
| 756 | printk("unable to allocate memory for dlfb commands\n"); |
| 757 | goto out; |
| 758 | } |
| 759 | dev_info->bufend = dev_info->buf + BUF_SIZE; |
| 760 | |
| 761 | dev_info->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 762 | usb_fill_bulk_urb(dev_info->tx_urb, dev_info->udev, |
| 763 | usb_sndbulkpipe(dev_info->udev, 1), dev_info->buf, 0, |
| 764 | dlfb_bulk_callback, dev_info); |
| 765 | |
| 766 | ret = |
| 767 | usb_control_msg(dev_info->udev, usb_rcvctrlpipe(dev_info->udev, 0), |
| 768 | (0x06), (0x80 | (0x02 << 5)), 0, 0, rbuf, 4, 0); |
| 769 | printk("ret control msg 0: %d %x%x%x%x\n", ret, rbuf[0], rbuf[1], |
| 770 | rbuf[2], rbuf[3]); |
| 771 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 772 | dlfb_edid(dev_info); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 773 | |
| 774 | info = framebuffer_alloc(sizeof(u32) * 256, &dev_info->udev->dev); |
| 775 | |
| 776 | if (!info) { |
| 777 | printk("non posso allocare il framebuffer displaylink"); |
| 778 | goto out; |
| 779 | } |
| 780 | |
| 781 | fb_parse_edid(dev_info->edid, &info->var); |
| 782 | |
| 783 | printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres); |
| 784 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 785 | if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) { |
| 786 | info->var.xres = 1280; |
| 787 | info->var.yres = 1024; |
| 788 | if (dlfb_set_video_mode |
| 789 | (dev_info, info->var.xres, info->var.yres) != 0) { |
| 790 | goto out; |
| 791 | } |
| 792 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 793 | |
| 794 | printk("found valid mode...%d\n", info->var.pixclock); |
| 795 | |
| 796 | info->pseudo_palette = info->par; |
| 797 | info->par = dev_info; |
| 798 | |
| 799 | dev_info->info = info; |
| 800 | |
| 801 | info->flags = |
| 802 | FBINFO_DEFAULT | FBINFO_READS_FAST | FBINFO_HWACCEL_IMAGEBLIT | |
| 803 | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; |
| 804 | info->fbops = &dlfb_ops; |
| 805 | info->screen_base = rvmalloc(dev_info->screen_size); |
| 806 | |
| 807 | if (info->screen_base == NULL) { |
| 808 | printk |
| 809 | ("cannot allocate framebuffer virtual memory of %d bytes\n", |
| 810 | dev_info->screen_size); |
| 811 | goto out0; |
| 812 | } |
| 813 | |
| 814 | printk("screen base allocated !!!\n"); |
| 815 | |
| 816 | dev_info->backing_buffer = kzalloc(dev_info->screen_size, GFP_KERNEL); |
| 817 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 818 | if (!dev_info->backing_buffer) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 819 | printk("non posso allocare il backing buffer\n"); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 820 | |
| 821 | /* info->var = dev_info->si; */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 822 | |
| 823 | info->var.bits_per_pixel = 16; |
| 824 | info->var.activate = FB_ACTIVATE_TEST; |
| 825 | info->var.vmode = FB_VMODE_NONINTERLACED; |
| 826 | |
| 827 | info->var.red.offset = 11; |
| 828 | info->var.red.length = 5; |
| 829 | info->var.red.msb_right = 0; |
| 830 | |
| 831 | info->var.green.offset = 5; |
| 832 | info->var.green.length = 6; |
| 833 | info->var.green.msb_right = 0; |
| 834 | |
| 835 | info->var.blue.offset = 0; |
| 836 | info->var.blue.length = 5; |
| 837 | info->var.blue.msb_right = 0; |
| 838 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 839 | /* info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ; */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 840 | |
| 841 | info->fix.smem_start = (unsigned long)info->screen_base; |
| 842 | info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 843 | if (strlen(dev_info->udev->product) > 15) { |
| 844 | memcpy(info->fix.id, dev_info->udev->product, 15); |
| 845 | } else { |
| 846 | memcpy(info->fix.id, dev_info->udev->product, |
| 847 | strlen(dev_info->udev->product)); |
| 848 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 849 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
| 850 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
| 851 | info->fix.accel = info->flags; |
| 852 | info->fix.line_length = dev_info->line_length; |
| 853 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 854 | if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 855 | goto out1; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 856 | |
| 857 | printk("colormap allocated\n"); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 858 | if (register_framebuffer(info) < 0) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 859 | goto out2; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 860 | |
| 861 | draw_rect(dev_info, 0, 0, dev_info->info->var.xres, |
| 862 | dev_info->info->var.yres, 0x30, 0xff, 0x30); |
| 863 | |
| 864 | return 0; |
| 865 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 866 | out2: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 867 | fb_dealloc_cmap(&info->cmap); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 868 | out1: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 869 | rvfree(info->screen_base, dev_info->screen_size); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 870 | out0: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 871 | framebuffer_release(info); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 872 | out: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 873 | usb_set_intfdata(interface, NULL); |
| 874 | usb_put_dev(dev_info->udev); |
| 875 | kfree(dev_info); |
| 876 | return -ENOMEM; |
| 877 | |
| 878 | } |
| 879 | |
| 880 | static void dlfb_disconnect(struct usb_interface *interface) |
| 881 | { |
| 882 | struct dlfb_data *dev_info = usb_get_intfdata(interface); |
| 883 | |
| 884 | mutex_unlock(&dev_info->bulk_mutex); |
| 885 | |
| 886 | usb_kill_urb(dev_info->tx_urb); |
| 887 | usb_free_urb(dev_info->tx_urb); |
| 888 | usb_set_intfdata(interface, NULL); |
| 889 | usb_put_dev(dev_info->udev); |
| 890 | |
| 891 | if (dev_info->info) { |
| 892 | unregister_framebuffer(dev_info->info); |
| 893 | fb_dealloc_cmap(&dev_info->info->cmap); |
| 894 | rvfree(dev_info->info->screen_base, dev_info->screen_size); |
| 895 | kfree(dev_info->backing_buffer); |
| 896 | framebuffer_release(dev_info->info); |
| 897 | |
| 898 | } |
| 899 | |
| 900 | kfree(dev_info); |
| 901 | |
| 902 | printk("DisplayLink device disconnected\n"); |
| 903 | } |
| 904 | |
| 905 | static struct usb_driver dlfb_driver = { |
| 906 | .name = "udlfb", |
| 907 | .probe = dlfb_probe, |
| 908 | .disconnect = dlfb_disconnect, |
| 909 | .id_table = id_table, |
| 910 | }; |
| 911 | |
| 912 | static int __init dlfb_init(void) |
| 913 | { |
| 914 | int res; |
| 915 | |
| 916 | dlfb_init_modes(); |
| 917 | |
| 918 | res = usb_register(&dlfb_driver); |
| 919 | if (res) |
| 920 | err("usb_register failed. Error number %d", res); |
| 921 | |
| 922 | printk("VMODES initialized\n"); |
| 923 | |
| 924 | return res; |
| 925 | } |
| 926 | |
| 927 | static void __exit dlfb_exit(void) |
| 928 | { |
| 929 | usb_deregister(&dlfb_driver); |
| 930 | } |
| 931 | |
| 932 | module_init(dlfb_init); |
| 933 | module_exit(dlfb_exit); |
| 934 | |
| 935 | MODULE_AUTHOR("Roberto De Ioris <roberto@unbit.it>"); |
| 936 | MODULE_DESCRIPTION(DRIVER_VERSION); |
| 937 | MODULE_LICENSE("GPL"); |