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> |
Amit Kucheria | fb29900 | 2009-07-27 12:01:03 +0300 | [diff] [blame] | 24 | #include <linux/vmalloc.h> |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 25 | |
| 26 | #include "udlfb.h" |
| 27 | |
| 28 | #define DRIVER_VERSION "DLFB 0.2" |
| 29 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 30 | /* memory functions taken from vfb */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 78 | if (offset + size > info->fix.smem_len) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 79 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 80 | |
| 81 | pos = (unsigned long)info->fix.smem_start + offset; |
| 82 | |
| 83 | while (size > 0) { |
| 84 | page = vmalloc_to_pfn((void *)pos); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 85 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 86 | return -EAGAIN; |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 87 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 101 | /* ioctl structure */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 102 | struct dloarea { |
| 103 | int x, y; |
| 104 | int w, h; |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 105 | int x2, y2; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 106 | }; |
| 107 | |
| 108 | /* |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 109 | static struct usb_device_id id_table [] = { |
| 110 | { USB_DEVICE(0x17e9, 0x023d) }, |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 111 | { } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 112 | }; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 113 | */ |
| 114 | |
| 115 | static struct usb_device_id id_table[] = { |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 116 | {.idVendor = 0x17e9, .match_flags = USB_DEVICE_ID_MATCH_VENDOR,}, |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 117 | {}, |
| 118 | }; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 119 | MODULE_DEVICE_TABLE(usb, id_table); |
| 120 | |
| 121 | static struct usb_driver dlfb_driver; |
| 122 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 163 | int firstdiff, thistime; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 164 | |
| 165 | char *bufptr; |
| 166 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 167 | if (x + width > dev_info->info->var.xres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 168 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 169 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 170 | if (y + height > dev_info->info->var.yres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 171 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 172 | |
| 173 | mutex_lock(&dev_info->bulk_mutex); |
| 174 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 175 | base = |
| 176 | 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] | 177 | |
| 178 | data += (dev_info->info->var.xres * 2 * y) + (x * 2); |
| 179 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 180 | /* printk("IMAGE_BLIT\n"); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 193 | /* printk("WRITING LINE %d\n", i); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | } |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 203 | // number of pixels to consider this time |
| 204 | thistime = rem; |
| 205 | if (thistime > 255) |
| 206 | thistime = 255; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 207 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 215 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 216 | } |
| 217 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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?) |
| 245 | *bufptr++ = 0xAF; |
| 246 | *bufptr++ = 0x68; |
| 247 | |
| 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]; |
| 261 | } |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | base += thistime * 2; |
| 266 | data += thistime * 2; |
| 267 | rem -= thistime; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 270 | memcpy(dev_info->backing_buffer + (base - dev_info->base16) - |
| 271 | (width * 2), data - (width * 2), width * 2); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 272 | |
| 273 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 274 | data += (dev_info->info->var.xres * 2) - (width * 2); |
| 275 | |
| 276 | } |
| 277 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 278 | if (bufptr > dev_info->buf) { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 279 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 280 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 302 | if (x + width > dev_info->info->var.xres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 303 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 304 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 305 | if (y + height > dev_info->info->var.yres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 306 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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) { |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 366 | if (bufptr > dev_info->buf) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 367 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 368 | |
| 369 | mutex_unlock(&dev_info->bulk_mutex); |
| 370 | |
| 371 | return 1; |
| 372 | } |
| 373 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 479 | static int |
| 480 | copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy, |
| 481 | int width, int height) |
| 482 | { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 483 | int base; |
| 484 | int source; |
| 485 | int rem; |
| 486 | int i, ret; |
| 487 | |
| 488 | char *bufptr; |
| 489 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 490 | if (dx + width > dev_info->info->var.xres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 491 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 492 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 493 | if (dy + height > dev_info->info->var.yres) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 494 | return -EINVAL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 506 | memcpy(dev_info->backing_buffer + base - dev_info->base16, |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | base += (dev_info->info->var.xres * 2) - (width * 2); |
| 555 | source += (dev_info->info->var.xres * 2) - (width * 2); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 556 | } |
| 557 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 558 | if (bufptr > dev_info->buf) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 559 | ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 560 | |
| 561 | mutex_unlock(&dev_info->bulk_mutex); |
| 562 | |
| 563 | return 1; |
| 564 | } |
| 565 | |
Greg Kroah-Hartman | 4b6a485 | 2009-06-03 14:47:21 -0700 | [diff] [blame] | 566 | 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] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 574 | /* 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] | 575 | |
| 576 | } |
| 577 | |
Greg Kroah-Hartman | 4b6a485 | 2009-06-03 14:47:21 -0700 | [diff] [blame] | 578 | 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] | 579 | { |
| 580 | |
| 581 | int ret; |
| 582 | struct dlfb_data *dev = info->par; |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 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); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 584 | cfb_imageblit(info, image); |
| 585 | ret = |
| 586 | image_blit(dev, image->dx, image->dy, image->width, image->height, |
| 587 | info->screen_base); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 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); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 589 | } |
| 590 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 591 | static void dlfb_fillrect(struct fb_info *info, |
| 592 | const struct fb_fillrect *region) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 603 | /* printk("FILL RECT %d %d !!!\n", region->dx, region->dy); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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; |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 611 | struct dloarea *area = NULL; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 612 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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) { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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; |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 637 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 638 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 639 | if (cmd == 0xAA) { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 640 | image_blit(dev_info, area->x, area->y, area->w, area->h, |
| 641 | info->screen_base); |
| 642 | } |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 660 | return 0; |
| 661 | } |
| 662 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 663 | /* taken from vesafb */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 699 | static int dlfb_blank(int blank_mode, struct fb_info *info) |
| 700 | { |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 714 | return 0; |
| 715 | } |
| 716 | |
| 717 | static struct fb_ops dlfb_ops = { |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 750 | /* add framebuffer info to usb interface */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 751 | usb_set_intfdata(interface, dev_info); |
| 752 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 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); */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 773 | dlfb_edid(dev_info); |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 819 | if (!dev_info->backing_buffer) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 820 | printk("non posso allocare il backing buffer\n"); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 821 | |
| 822 | /* info->var = dev_info->si; */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 840 | /* info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ; */ |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 841 | |
| 842 | info->fix.smem_start = (unsigned long)info->screen_base; |
| 843 | info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 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 | } |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 855 | if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 856 | goto out1; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 857 | |
| 858 | printk("colormap allocated\n"); |
Greg Kroah-Hartman | f05e057 | 2009-06-03 14:47:08 -0700 | [diff] [blame] | 859 | if (register_framebuffer(info) < 0) |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 860 | goto out2; |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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 | |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 867 | out2: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 868 | fb_dealloc_cmap(&info->cmap); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 869 | out1: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 870 | rvfree(info->screen_base, dev_info->screen_size); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 871 | out0: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 872 | framebuffer_release(info); |
Roberto De Ioris | 7316bc5 | 2009-06-10 23:02:19 -0700 | [diff] [blame] | 873 | out: |
Roberto De Ioris | 88e58b1 | 2009-06-03 14:03:06 -0700 | [diff] [blame] | 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"); |