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
18 #include <linux/errno.h>
19 #include <linux/fb.h>
20 #include <linux/string.h>
21 #include <linux/module.h>
22
23 #include "macmodes.h"
24
25 /*
26 * MacOS video mode definitions
27 *
28 * Order IS important! If you change these, don't forget to update
29 * mac_modes[] below!
30 */
31
32 #define DEFAULT_MODEDB_INDEX 0
33
34 static const struct fb_videomode mac_modedb[] = {
35 {
36 /* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */
37 "mac5", 60, 640, 480, 39722, 32, 32, 33, 10, 96, 2,
38 0, FB_VMODE_NONINTERLACED
39 }, {
40 /* 640x480, 67Hz, Non-Interlaced (30.0 MHz dotclock) */
41 "mac6", 67, 640, 480, 33334, 80, 80, 39, 3, 64, 3,
42 0, FB_VMODE_NONINTERLACED
43 }, {
44 /* 800x600, 56 Hz, Non-Interlaced (36.00 MHz dotclock) */
45 "mac9", 56, 800, 600, 27778, 112, 40, 22, 1, 72, 2,
46 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
47 }, {
48 /* 800x600, 60 Hz, Non-Interlaced (40.00 MHz dotclock) */
49 "mac10", 60, 800, 600, 25000, 72, 56, 23, 1, 128, 4,
50 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
51 }, {
52 /* 800x600, 72 Hz, Non-Interlaced (50.00 MHz dotclock) */
53 "mac11", 72, 800, 600, 20000, 48, 72, 23, 37, 120, 6,
54 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
55 }, {
56 /* 800x600, 75 Hz, Non-Interlaced (49.50 MHz dotclock) */
57 "mac12", 75, 800, 600, 20203, 144, 32, 21, 1, 80, 3,
58 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
59 }, {
60 /* 832x624, 75Hz, Non-Interlaced (57.6 MHz dotclock) */
61 "mac13", 75, 832, 624, 17362, 208, 48, 39, 1, 64, 3,
62 0, FB_VMODE_NONINTERLACED
63 }, {
64 /* 1024x768, 60 Hz, Non-Interlaced (65.00 MHz dotclock) */
65 "mac14", 60, 1024, 768, 15385, 144, 40, 29, 3, 136, 6,
66 0, FB_VMODE_NONINTERLACED
67 }, {
68 /* 1024x768, 72 Hz, Non-Interlaced (75.00 MHz dotclock) */
69 "mac15", 72, 1024, 768, 13334, 128, 40, 29, 3, 136, 6,
70 0, FB_VMODE_NONINTERLACED
71 }, {
72 /* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
73 "mac16", 75, 1024, 768, 12699, 176, 16, 28, 1, 96, 3,
74 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
75 }, {
76 /* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
77 "mac17", 75, 1024, 768, 12699, 160, 32, 28, 1, 96, 3,
78 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
79 }, {
80 /* 1152x870, 75 Hz, Non-Interlaced (100.0 MHz dotclock) */
81 "mac18", 75, 1152, 870, 10000, 128, 48, 39, 3, 128, 3,
82 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
83 }, {
84 /* 1280x960, 75 Hz, Non-Interlaced (126.00 MHz dotclock) */
85 "mac19", 75, 1280, 960, 7937, 224, 32, 36, 1, 144, 3,
86 0, FB_VMODE_NONINTERLACED
87 }, {
88 /* 1280x1024, 75 Hz, Non-Interlaced (135.00 MHz dotclock) */
89 "mac20", 75, 1280, 1024, 7408, 232, 64, 38, 1, 112, 3,
90 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
91 }, {
92 /* 1152x768, 60 Hz, Titanium PowerBook */
93 "mac21", 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6,
94 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
95 }, {
96 /* 1600x1024, 60 Hz, Non-Interlaced (112.27 MHz dotclock) */
97 "mac22", 60, 1600, 1024, 8908, 88, 104, 1, 10, 16, 1,
98 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
99 }
100
101 #if 0
102 /* Anyone who has timings for these? */
103 {
104 /* VMODE_512_384_60I: 512x384, 60Hz, Interlaced (NTSC) */
105 "mac1", 60, 512, 384, pixclock, left, right, upper, lower, hslen, vslen,
106 sync, FB_VMODE_INTERLACED
107 }, {
108 /* VMODE_512_384_60: 512x384, 60Hz, Non-Interlaced */
109 "mac2", 60, 512, 384, pixclock, left, right, upper, lower, hslen, vslen,
110 sync, FB_VMODE_NONINTERLACED
111 }, {
112 /* VMODE_640_480_50I: 640x480, 50Hz, Interlaced (PAL) */
113 "mac3", 50, 640, 480, pixclock, left, right, upper, lower, hslen, vslen,
114 sync, FB_VMODE_INTERLACED
115 }, {
116 /* VMODE_640_480_60I: 640x480, 60Hz, Interlaced (NTSC) */
117 "mac4", 60, 640, 480, pixclock, left, right, upper, lower, hslen, vslen,
118 sync, FB_VMODE_INTERLACED
119 }, {
120 /* VMODE_640_870_75P: 640x870, 75Hz (portrait), Non-Interlaced */
121 "mac7", 75, 640, 870, pixclock, left, right, upper, lower, hslen, vslen,
122 sync, FB_VMODE_NONINTERLACED
123 }, {
124 /* VMODE_768_576_50I: 768x576, 50Hz (PAL full frame), Interlaced */
125 "mac8", 50, 768, 576, pixclock, left, right, upper, lower, hslen, vslen,
126 sync, FB_VMODE_INTERLACED
127 },
128 #endif
129 };
130
131
132 /*
133 * Mapping between MacOS video mode numbers and video mode definitions
134 *
135 * These MUST be ordered in
136 * - increasing resolution
137 * - decreasing refresh rate
138 */
139
140 static const struct mode_map {
141 int vmode;
142 const struct fb_videomode *mode;
143 } mac_modes[] = {
144 /* 640x480 */
145 { VMODE_640_480_67, &mac_modedb[1] },
146 { VMODE_640_480_60, &mac_modedb[0] },
147 /* 800x600 */
148 { VMODE_800_600_75, &mac_modedb[5] },
149 { VMODE_800_600_72, &mac_modedb[4] },
150 { VMODE_800_600_60, &mac_modedb[3] },
151 { VMODE_800_600_56, &mac_modedb[2] },
152 /* 832x624 */
153 { VMODE_832_624_75, &mac_modedb[6] },
154 /* 1024x768 */
155 { VMODE_1024_768_75, &mac_modedb[10] },
156 { VMODE_1024_768_75V, &mac_modedb[9] },
157 { VMODE_1024_768_70, &mac_modedb[8] },
158 { VMODE_1024_768_60, &mac_modedb[7] },
159 /* 1152x768 */
160 { VMODE_1152_768_60, &mac_modedb[14] },
161 /* 1152x870 */
162 { VMODE_1152_870_75, &mac_modedb[11] },
163 /* 1280x960 */
164 { VMODE_1280_960_75, &mac_modedb[12] },
165 /* 1280x1024 */
166 { VMODE_1280_1024_75, &mac_modedb[13] },
167 /* 1600x1024 */
168 { VMODE_1600_1024_60, &mac_modedb[15] },
169 { -1, NULL }
170 };
171
172
173 /*
174 * Mapping between monitor sense values and MacOS video mode numbers
175 */
176
177 static const struct monitor_map {
178 int sense;
179 int vmode;
180 } mac_monitors[] = {
181 { 0x000, VMODE_1280_1024_75 }, /* 21" RGB */
182 { 0x114, VMODE_640_870_75P }, /* Portrait Monochrome */
183 { 0x221, VMODE_512_384_60 }, /* 12" RGB*/
184 { 0x331, VMODE_1280_1024_75 }, /* 21" RGB (Radius) */
185 { 0x334, VMODE_1280_1024_75 }, /* 21" mono (Radius) */
186 { 0x335, VMODE_1280_1024_75 }, /* 21" mono */
187 { 0x40A, VMODE_640_480_60I }, /* NTSC */
188 { 0x51E, VMODE_640_870_75P }, /* Portrait RGB */
189 { 0x603, VMODE_832_624_75 }, /* 12"-16" multiscan */
190 { 0x60b, VMODE_1024_768_70 }, /* 13"-19" multiscan */
191 { 0x623, VMODE_1152_870_75 }, /* 13"-21" multiscan */
192 { 0x62b, VMODE_640_480_67 }, /* 13"/14" RGB */
193 { 0x700, VMODE_640_480_50I }, /* PAL */
194 { 0x714, VMODE_640_480_60I }, /* NTSC */
195 { 0x717, VMODE_800_600_75 }, /* VGA */
196 { 0x72d, VMODE_832_624_75 }, /* 16" RGB (Goldfish) */
197 { 0x730, VMODE_768_576_50I }, /* PAL (Alternate) */
198 { 0x73a, VMODE_1152_870_75 }, /* 3rd party 19" */
199 { 0x73f, VMODE_640_480_67 }, /* no sense lines connected at all */
200 { 0xBEEF, VMODE_1600_1024_60 }, /* 22" Apple Cinema Display */
201 { -1, VMODE_640_480_60 }, /* catch-all, must be last */
202 };
203
204 /**
205 * mac_vmode_to_var - converts vmode/cmode pair to var structure
206 * @vmode: MacOS video mode
207 * @cmode: MacOS color mode
208 * @var: frame buffer video mode structure
209 *
210 * Converts a MacOS vmode/cmode pair to a frame buffer video
211 * mode structure.
212 *
213 * Returns negative errno on error, or zero for success.
214 *
215 */
216
mac_vmode_to_var(int vmode,int cmode,struct fb_var_screeninfo * var)217 int mac_vmode_to_var(int vmode, int cmode, struct fb_var_screeninfo *var)
218 {
219 const struct fb_videomode *mode = NULL;
220 const struct mode_map *map;
221
222 for (map = mac_modes; map->vmode != -1; map++)
223 if (map->vmode == vmode) {
224 mode = map->mode;
225 break;
226 }
227 if (!mode)
228 return -EINVAL;
229
230 memset(var, 0, sizeof(struct fb_var_screeninfo));
231 switch (cmode) {
232 case CMODE_8:
233 var->bits_per_pixel = 8;
234 var->red.offset = 0;
235 var->red.length = 8;
236 var->green.offset = 0;
237 var->green.length = 8;
238 var->blue.offset = 0;
239 var->blue.length = 8;
240 break;
241
242 case CMODE_16:
243 var->bits_per_pixel = 16;
244 var->red.offset = 10;
245 var->red.length = 5;
246 var->green.offset = 5;
247 var->green.length = 5;
248 var->blue.offset = 0;
249 var->blue.length = 5;
250 break;
251
252 case CMODE_32:
253 var->bits_per_pixel = 32;
254 var->red.offset = 16;
255 var->red.length = 8;
256 var->green.offset = 8;
257 var->green.length = 8;
258 var->blue.offset = 0;
259 var->blue.length = 8;
260 var->transp.offset = 24;
261 var->transp.length = 8;
262 break;
263
264 default:
265 return -EINVAL;
266 }
267 var->xres = mode->xres;
268 var->yres = mode->yres;
269 var->xres_virtual = mode->xres;
270 var->yres_virtual = mode->yres;
271 var->height = -1;
272 var->width = -1;
273 var->pixclock = mode->pixclock;
274 var->left_margin = mode->left_margin;
275 var->right_margin = mode->right_margin;
276 var->upper_margin = mode->upper_margin;
277 var->lower_margin = mode->lower_margin;
278 var->hsync_len = mode->hsync_len;
279 var->vsync_len = mode->vsync_len;
280 var->sync = mode->sync;
281 var->vmode = mode->vmode;
282 return 0;
283 }
284 EXPORT_SYMBOL(mac_vmode_to_var);
285
286 /**
287 * mac_var_to_vmode - convert var structure to MacOS vmode/cmode pair
288 * @var: frame buffer video mode structure
289 * @vmode: MacOS video mode
290 * @cmode: MacOS color mode
291 *
292 * Converts a frame buffer video mode structure to a MacOS
293 * vmode/cmode pair.
294 *
295 * Returns negative errno on error, or zero for success.
296 *
297 */
298
mac_var_to_vmode(const struct fb_var_screeninfo * var,int * vmode,int * cmode)299 int mac_var_to_vmode(const struct fb_var_screeninfo *var, int *vmode,
300 int *cmode)
301 {
302 const struct fb_videomode *mode = NULL;
303 const struct mode_map *map;
304
305 if (var->bits_per_pixel <= 8)
306 *cmode = CMODE_8;
307 else if (var->bits_per_pixel <= 16)
308 *cmode = CMODE_16;
309 else if (var->bits_per_pixel <= 32)
310 *cmode = CMODE_32;
311 else
312 return -EINVAL;
313
314 for (map = mac_modes; map->vmode != -1; map++) {
315 mode = map->mode;
316 if (var->xres > mode->xres || var->yres > mode->yres)
317 continue;
318 if (var->xres_virtual > mode->xres || var->yres_virtual > mode->yres)
319 continue;
320 if (var->pixclock > mode->pixclock)
321 continue;
322 if ((var->vmode & FB_VMODE_MASK) != mode->vmode)
323 continue;
324 *vmode = map->vmode;
325 return 0;
326 }
327 return -EINVAL;
328 }
329
330 /**
331 * mac_map_monitor_sense - Convert monitor sense to vmode
332 * @sense: Macintosh monitor sense number
333 *
334 * Converts a Macintosh monitor sense number to a MacOS
335 * vmode number.
336 *
337 * Returns MacOS vmode video mode number.
338 *
339 */
340
mac_map_monitor_sense(int sense)341 int mac_map_monitor_sense(int sense)
342 {
343 const struct monitor_map *map;
344
345 for (map = mac_monitors; map->sense != -1; map++)
346 if (map->sense == sense)
347 break;
348 return map->vmode;
349 }
350 EXPORT_SYMBOL(mac_map_monitor_sense);
351
352 /**
353 * mac_find_mode - find a video mode
354 * @var: frame buffer user defined part of display
355 * @info: frame buffer info structure
356 * @mode_option: video mode name (see mac_modedb[])
357 * @default_bpp: default color depth in bits per pixel
358 *
359 * Finds a suitable video mode. Tries to set mode specified
360 * by @mode_option. If the name of the wanted mode begins with
361 * 'mac', the Mac video mode database will be used, otherwise it
362 * will fall back to the standard video mode database.
363 *
364 * Note: Function marked as __init and can only be used during
365 * system boot.
366 *
367 * Returns error code from fb_find_mode (see fb_find_mode
368 * function).
369 *
370 */
371
mac_find_mode(struct fb_var_screeninfo * var,struct fb_info * info,const char * mode_option,unsigned int default_bpp)372 int mac_find_mode(struct fb_var_screeninfo *var, struct fb_info *info,
373 const char *mode_option, unsigned int default_bpp)
374 {
375 const struct fb_videomode *db = NULL;
376 unsigned int dbsize = 0;
377
378 if (mode_option && !strncmp(mode_option, "mac", 3)) {
379 mode_option += 3;
380 db = mac_modedb;
381 dbsize = ARRAY_SIZE(mac_modedb);
382 }
383 return fb_find_mode(var, info, mode_option, db, dbsize,
384 &mac_modedb[DEFAULT_MODEDB_INDEX], default_bpp);
385 }
386 EXPORT_SYMBOL(mac_find_mode);
387
388 MODULE_LICENSE("GPL");
389