macmodes.c 12 KB

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  1. /*
  2. * linux/drivers/video/macmodes.c -- Standard MacOS video modes
  3. *
  4. * Copyright (C) 1998 Geert Uytterhoeven
  5. *
  6. * 2000 - Removal of OpenFirmware dependencies by:
  7. * - Ani Joshi
  8. * - Brad Douglas <brad@neruo.com>
  9. *
  10. * 2001 - Documented with DocBook
  11. * - Brad Douglas <brad@neruo.com>
  12. *
  13. * This file is subject to the terms and conditions of the GNU General Public
  14. * License. See the file COPYING in the main directory of this archive for
  15. * more details.
  16. */
  17. #include <linux/errno.h>
  18. #include <linux/fb.h>
  19. #include <linux/string.h>
  20. #include <linux/module.h>
  21. #include "macmodes.h"
  22. /*
  23. * MacOS video mode definitions
  24. *
  25. * Order IS important! If you change these, don't forget to update
  26. * mac_modes[] below!
  27. */
  28. #define DEFAULT_MODEDB_INDEX 0
  29. static const struct fb_videomode mac_modedb[] = {
  30. {
  31. /* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */
  32. "mac5", 60, 640, 480, 39722, 32, 32, 33, 10, 96, 2,
  33. 0, FB_VMODE_NONINTERLACED
  34. }, {
  35. /* 640x480, 67Hz, Non-Interlaced (30.0 MHz dotclock) */
  36. "mac6", 67, 640, 480, 33334, 80, 80, 39, 3, 64, 3,
  37. 0, FB_VMODE_NONINTERLACED
  38. }, {
  39. /* 800x600, 56 Hz, Non-Interlaced (36.00 MHz dotclock) */
  40. "mac9", 56, 800, 600, 27778, 112, 40, 22, 1, 72, 2,
  41. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  42. }, {
  43. /* 800x600, 60 Hz, Non-Interlaced (40.00 MHz dotclock) */
  44. "mac10", 60, 800, 600, 25000, 72, 56, 23, 1, 128, 4,
  45. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  46. }, {
  47. /* 800x600, 72 Hz, Non-Interlaced (50.00 MHz dotclock) */
  48. "mac11", 72, 800, 600, 20000, 48, 72, 23, 37, 120, 6,
  49. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  50. }, {
  51. /* 800x600, 75 Hz, Non-Interlaced (49.50 MHz dotclock) */
  52. "mac12", 75, 800, 600, 20203, 144, 32, 21, 1, 80, 3,
  53. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  54. }, {
  55. /* 832x624, 75Hz, Non-Interlaced (57.6 MHz dotclock) */
  56. "mac13", 75, 832, 624, 17362, 208, 48, 39, 1, 64, 3,
  57. 0, FB_VMODE_NONINTERLACED
  58. }, {
  59. /* 1024x768, 60 Hz, Non-Interlaced (65.00 MHz dotclock) */
  60. "mac14", 60, 1024, 768, 15385, 144, 40, 29, 3, 136, 6,
  61. 0, FB_VMODE_NONINTERLACED
  62. }, {
  63. /* 1024x768, 72 Hz, Non-Interlaced (75.00 MHz dotclock) */
  64. "mac15", 72, 1024, 768, 13334, 128, 40, 29, 3, 136, 6,
  65. 0, FB_VMODE_NONINTERLACED
  66. }, {
  67. /* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
  68. "mac16", 75, 1024, 768, 12699, 176, 16, 28, 1, 96, 3,
  69. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  70. }, {
  71. /* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
  72. "mac17", 75, 1024, 768, 12699, 160, 32, 28, 1, 96, 3,
  73. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  74. }, {
  75. /* 1152x870, 75 Hz, Non-Interlaced (100.0 MHz dotclock) */
  76. "mac18", 75, 1152, 870, 10000, 128, 48, 39, 3, 128, 3,
  77. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  78. }, {
  79. /* 1280x960, 75 Hz, Non-Interlaced (126.00 MHz dotclock) */
  80. "mac19", 75, 1280, 960, 7937, 224, 32, 36, 1, 144, 3,
  81. 0, FB_VMODE_NONINTERLACED
  82. }, {
  83. /* 1280x1024, 75 Hz, Non-Interlaced (135.00 MHz dotclock) */
  84. "mac20", 75, 1280, 1024, 7408, 232, 64, 38, 1, 112, 3,
  85. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  86. }, {
  87. /* 1152x768, 60 Hz, Titanium PowerBook */
  88. "mac21", 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6,
  89. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  90. }, {
  91. /* 1600x1024, 60 Hz, Non-Interlaced (112.27 MHz dotclock) */
  92. "mac22", 60, 1600, 1024, 8908, 88, 104, 1, 10, 16, 1,
  93. FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
  94. }
  95. #if 0
  96. /* Anyone who has timings for these? */
  97. {
  98. /* VMODE_512_384_60I: 512x384, 60Hz, Interlaced (NTSC) */
  99. "mac1", 60, 512, 384, pixclock, left, right, upper, lower, hslen, vslen,
  100. sync, FB_VMODE_INTERLACED
  101. }, {
  102. /* VMODE_512_384_60: 512x384, 60Hz, Non-Interlaced */
  103. "mac2", 60, 512, 384, pixclock, left, right, upper, lower, hslen, vslen,
  104. sync, FB_VMODE_NONINTERLACED
  105. }, {
  106. /* VMODE_640_480_50I: 640x480, 50Hz, Interlaced (PAL) */
  107. "mac3", 50, 640, 480, pixclock, left, right, upper, lower, hslen, vslen,
  108. sync, FB_VMODE_INTERLACED
  109. }, {
  110. /* VMODE_640_480_60I: 640x480, 60Hz, Interlaced (NTSC) */
  111. "mac4", 60, 640, 480, pixclock, left, right, upper, lower, hslen, vslen,
  112. sync, FB_VMODE_INTERLACED
  113. }, {
  114. /* VMODE_640_870_75P: 640x870, 75Hz (portrait), Non-Interlaced */
  115. "mac7", 75, 640, 870, pixclock, left, right, upper, lower, hslen, vslen,
  116. sync, FB_VMODE_NONINTERLACED
  117. }, {
  118. /* VMODE_768_576_50I: 768x576, 50Hz (PAL full frame), Interlaced */
  119. "mac8", 50, 768, 576, pixclock, left, right, upper, lower, hslen, vslen,
  120. sync, FB_VMODE_INTERLACED
  121. },
  122. #endif
  123. };
  124. /*
  125. * Mapping between MacOS video mode numbers and video mode definitions
  126. *
  127. * These MUST be ordered in
  128. * - increasing resolution
  129. * - decreasing refresh rate
  130. */
  131. static const struct mode_map {
  132. int vmode;
  133. const struct fb_videomode *mode;
  134. } mac_modes[] = {
  135. /* 640x480 */
  136. { VMODE_640_480_67, &mac_modedb[1] },
  137. { VMODE_640_480_60, &mac_modedb[0] },
  138. /* 800x600 */
  139. { VMODE_800_600_75, &mac_modedb[5] },
  140. { VMODE_800_600_72, &mac_modedb[4] },
  141. { VMODE_800_600_60, &mac_modedb[3] },
  142. { VMODE_800_600_56, &mac_modedb[2] },
  143. /* 832x624 */
  144. { VMODE_832_624_75, &mac_modedb[6] },
  145. /* 1024x768 */
  146. { VMODE_1024_768_75, &mac_modedb[10] },
  147. { VMODE_1024_768_75V, &mac_modedb[9] },
  148. { VMODE_1024_768_70, &mac_modedb[8] },
  149. { VMODE_1024_768_60, &mac_modedb[7] },
  150. /* 1152x768 */
  151. { VMODE_1152_768_60, &mac_modedb[14] },
  152. /* 1152x870 */
  153. { VMODE_1152_870_75, &mac_modedb[11] },
  154. /* 1280x960 */
  155. { VMODE_1280_960_75, &mac_modedb[12] },
  156. /* 1280x1024 */
  157. { VMODE_1280_1024_75, &mac_modedb[13] },
  158. /* 1600x1024 */
  159. { VMODE_1600_1024_60, &mac_modedb[15] },
  160. { -1, NULL }
  161. };
  162. /*
  163. * Mapping between monitor sense values and MacOS video mode numbers
  164. */
  165. static const struct monitor_map {
  166. int sense;
  167. int vmode;
  168. } mac_monitors[] = {
  169. { 0x000, VMODE_1280_1024_75 }, /* 21" RGB */
  170. { 0x114, VMODE_640_870_75P }, /* Portrait Monochrome */
  171. { 0x221, VMODE_512_384_60 }, /* 12" RGB*/
  172. { 0x331, VMODE_1280_1024_75 }, /* 21" RGB (Radius) */
  173. { 0x334, VMODE_1280_1024_75 }, /* 21" mono (Radius) */
  174. { 0x335, VMODE_1280_1024_75 }, /* 21" mono */
  175. { 0x40A, VMODE_640_480_60I }, /* NTSC */
  176. { 0x51E, VMODE_640_870_75P }, /* Portrait RGB */
  177. { 0x603, VMODE_832_624_75 }, /* 12"-16" multiscan */
  178. { 0x60b, VMODE_1024_768_70 }, /* 13"-19" multiscan */
  179. { 0x623, VMODE_1152_870_75 }, /* 13"-21" multiscan */
  180. { 0x62b, VMODE_640_480_67 }, /* 13"/14" RGB */
  181. { 0x700, VMODE_640_480_50I }, /* PAL */
  182. { 0x714, VMODE_640_480_60I }, /* NTSC */
  183. { 0x717, VMODE_800_600_75 }, /* VGA */
  184. { 0x72d, VMODE_832_624_75 }, /* 16" RGB (Goldfish) */
  185. { 0x730, VMODE_768_576_50I }, /* PAL (Alternate) */
  186. { 0x73a, VMODE_1152_870_75 }, /* 3rd party 19" */
  187. { 0x73f, VMODE_640_480_67 }, /* no sense lines connected at all */
  188. { 0xBEEF, VMODE_1600_1024_60 }, /* 22" Apple Cinema Display */
  189. { -1, VMODE_640_480_60 }, /* catch-all, must be last */
  190. };
  191. /**
  192. * mac_vmode_to_var - converts vmode/cmode pair to var structure
  193. * @vmode: MacOS video mode
  194. * @cmode: MacOS color mode
  195. * @var: frame buffer video mode structure
  196. *
  197. * Converts a MacOS vmode/cmode pair to a frame buffer video
  198. * mode structure.
  199. *
  200. * Returns negative errno on error, or zero for success.
  201. *
  202. */
  203. int mac_vmode_to_var(int vmode, int cmode, struct fb_var_screeninfo *var)
  204. {
  205. const struct fb_videomode *mode = NULL;
  206. const struct mode_map *map;
  207. for (map = mac_modes; map->vmode != -1; map++)
  208. if (map->vmode == vmode) {
  209. mode = map->mode;
  210. break;
  211. }
  212. if (!mode)
  213. return -EINVAL;
  214. memset(var, 0, sizeof(struct fb_var_screeninfo));
  215. switch (cmode) {
  216. case CMODE_8:
  217. var->bits_per_pixel = 8;
  218. var->red.offset = 0;
  219. var->red.length = 8;
  220. var->green.offset = 0;
  221. var->green.length = 8;
  222. var->blue.offset = 0;
  223. var->blue.length = 8;
  224. break;
  225. case CMODE_16:
  226. var->bits_per_pixel = 16;
  227. var->red.offset = 10;
  228. var->red.length = 5;
  229. var->green.offset = 5;
  230. var->green.length = 5;
  231. var->blue.offset = 0;
  232. var->blue.length = 5;
  233. break;
  234. case CMODE_32:
  235. var->bits_per_pixel = 32;
  236. var->red.offset = 16;
  237. var->red.length = 8;
  238. var->green.offset = 8;
  239. var->green.length = 8;
  240. var->blue.offset = 0;
  241. var->blue.length = 8;
  242. var->transp.offset = 24;
  243. var->transp.length = 8;
  244. break;
  245. default:
  246. return -EINVAL;
  247. }
  248. var->xres = mode->xres;
  249. var->yres = mode->yres;
  250. var->xres_virtual = mode->xres;
  251. var->yres_virtual = mode->yres;
  252. var->height = -1;
  253. var->width = -1;
  254. var->pixclock = mode->pixclock;
  255. var->left_margin = mode->left_margin;
  256. var->right_margin = mode->right_margin;
  257. var->upper_margin = mode->upper_margin;
  258. var->lower_margin = mode->lower_margin;
  259. var->hsync_len = mode->hsync_len;
  260. var->vsync_len = mode->vsync_len;
  261. var->sync = mode->sync;
  262. var->vmode = mode->vmode;
  263. return 0;
  264. }
  265. EXPORT_SYMBOL(mac_vmode_to_var);
  266. /**
  267. * mac_var_to_vmode - convert var structure to MacOS vmode/cmode pair
  268. * @var: frame buffer video mode structure
  269. * @vmode: MacOS video mode
  270. * @cmode: MacOS color mode
  271. *
  272. * Converts a frame buffer video mode structure to a MacOS
  273. * vmode/cmode pair.
  274. *
  275. * Returns negative errno on error, or zero for success.
  276. *
  277. */
  278. int mac_var_to_vmode(const struct fb_var_screeninfo *var, int *vmode,
  279. int *cmode)
  280. {
  281. const struct fb_videomode *mode = NULL;
  282. const struct mode_map *map;
  283. if (var->bits_per_pixel <= 8)
  284. *cmode = CMODE_8;
  285. else if (var->bits_per_pixel <= 16)
  286. *cmode = CMODE_16;
  287. else if (var->bits_per_pixel <= 32)
  288. *cmode = CMODE_32;
  289. else
  290. return -EINVAL;
  291. for (map = mac_modes; map->vmode != -1; map++) {
  292. mode = map->mode;
  293. if (var->xres > mode->xres || var->yres > mode->yres)
  294. continue;
  295. if (var->xres_virtual > mode->xres || var->yres_virtual > mode->yres)
  296. continue;
  297. if (var->pixclock > mode->pixclock)
  298. continue;
  299. if ((var->vmode & FB_VMODE_MASK) != mode->vmode)
  300. continue;
  301. *vmode = map->vmode;
  302. return 0;
  303. }
  304. return -EINVAL;
  305. }
  306. /**
  307. * mac_map_monitor_sense - Convert monitor sense to vmode
  308. * @sense: Macintosh monitor sense number
  309. *
  310. * Converts a Macintosh monitor sense number to a MacOS
  311. * vmode number.
  312. *
  313. * Returns MacOS vmode video mode number.
  314. *
  315. */
  316. int mac_map_monitor_sense(int sense)
  317. {
  318. const struct monitor_map *map;
  319. for (map = mac_monitors; map->sense != -1; map++)
  320. if (map->sense == sense)
  321. break;
  322. return map->vmode;
  323. }
  324. EXPORT_SYMBOL(mac_map_monitor_sense);
  325. /**
  326. * mac_find_mode - find a video mode
  327. * @var: frame buffer user defined part of display
  328. * @info: frame buffer info structure
  329. * @mode_option: video mode name (see mac_modedb[])
  330. * @default_bpp: default color depth in bits per pixel
  331. *
  332. * Finds a suitable video mode. Tries to set mode specified
  333. * by @mode_option. If the name of the wanted mode begins with
  334. * 'mac', the Mac video mode database will be used, otherwise it
  335. * will fall back to the standard video mode database.
  336. *
  337. * Note: Function marked as __init and can only be used during
  338. * system boot.
  339. *
  340. * Returns error code from fb_find_mode (see fb_find_mode
  341. * function).
  342. *
  343. */
  344. int __devinit mac_find_mode(struct fb_var_screeninfo *var,
  345. struct fb_info *info, const char *mode_option,
  346. unsigned int default_bpp)
  347. {
  348. const struct fb_videomode *db = NULL;
  349. unsigned int dbsize = 0;
  350. if (mode_option && !strncmp(mode_option, "mac", 3)) {
  351. mode_option += 3;
  352. db = mac_modedb;
  353. dbsize = ARRAY_SIZE(mac_modedb);
  354. }
  355. return fb_find_mode(var, info, mode_option, db, dbsize,
  356. &mac_modedb[DEFAULT_MODEDB_INDEX], default_bpp);
  357. }
  358. EXPORT_SYMBOL(mac_find_mode);
  359. MODULE_LICENSE("GPL");