2  *  linux/drivers/video/macmodes.c -- Standard MacOS video modes
6  *      2000 - Removal of OpenFirmware dependencies by:
7  *      - Ani Joshi
8  *      - Brad Douglas <brad@neruo.com>
10  *	2001 - Documented with DocBook
11  *	- Brad Douglas <brad@neruo.com>
26      *  MacOS video mode definitions
36 	/* 512x384, 60Hz, Non-Interlaced (15.67 MHz dot clock) */
40 	/* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */
44 	/* 640x480, 67Hz, Non-Interlaced (30.0 MHz dotclock) */
48 	/* 640x870, 75Hz (portrait), Non-Interlaced (57.28 MHz dot clock) */
52 	/* 800x600, 56 Hz, Non-Interlaced (36.00 MHz dotclock) */
56 	/* 800x600, 60 Hz, Non-Interlaced (40.00 MHz dotclock) */
60 	/* 800x600, 72 Hz, Non-Interlaced (50.00 MHz dotclock) */
64 	/* 800x600, 75 Hz, Non-Interlaced (49.50 MHz dotclock) */
68 	/* 832x624, 75Hz, Non-Interlaced (57.6 MHz dotclock) */
72 	/* 1024x768, 60 Hz, Non-Interlaced (65.00 MHz dotclock) */
76 	/* 1024x768, 72 Hz, Non-Interlaced (75.00 MHz dotclock) */
80 	/* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
84 	/* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */
88 	/* 1152x870, 75 Hz, Non-Interlaced (100.0 MHz dotclock) */
92 	/* 1280x960, 75 Hz, Non-Interlaced (126.00 MHz dotclock) */
96 	/* 1280x1024, 75 Hz, Non-Interlaced (135.00 MHz dotclock) */
104 	/* 1600x1024, 60 Hz, Non-Interlaced (112.27 MHz dotclock) */
133      *  Mapping between MacOS video mode numbers and video mode definitions
136      *    - increasing resolution
137      *    - decreasing pixel clock period
142     const struct fb_videomode *mode;  member
173     { -1, NULL }
178      *  Mapping between monitor sense values and MacOS video mode numbers
182     int sense;  member
193     { 0x603, VMODE_832_624_75 },	/* 12"-16" multiscan */
194     { 0x60b, VMODE_1024_768_70 },	/* 13"-19" multiscan */
195     { 0x623, VMODE_1152_870_75 },	/* 13"-21" multiscan */
203     { 0x73f, VMODE_640_480_67 },	/* no sense lines connected at all */
205     { -1,    VMODE_640_480_60 },	/* catch-all, must be last */
209  *	mac_vmode_to_var - converts vmode/cmode pair to var structure
210  *	@vmode: MacOS video mode
211  *	@cmode: MacOS color mode
212  *	@var: frame buffer video mode structure
215  *	mode structure.
223     const struct fb_videomode *mode = NULL;  in mac_vmode_to_var()  local
226     for (map = mac_modes; map->vmode != -1; map++)  in mac_vmode_to_var()
227 	if (map->vmode == vmode) {  in mac_vmode_to_var()
228 	    mode = map->mode;  in mac_vmode_to_var()
231     if (!mode)  in mac_vmode_to_var()
232 	return -EINVAL;  in mac_vmode_to_var()
237 	    var->bits_per_pixel = 8;  in mac_vmode_to_var()
238 	    var->red.offset = 0;  in mac_vmode_to_var()
239 	    var->red.length = 8;     in mac_vmode_to_var()
240 	    var->green.offset = 0;  in mac_vmode_to_var()
241 	    var->green.length = 8;  in mac_vmode_to_var()
242 	    var->blue.offset = 0;  in mac_vmode_to_var()
243 	    var->blue.length = 8;  in mac_vmode_to_var()
247 	    var->bits_per_pixel = 16;  in mac_vmode_to_var()
248 	    var->red.offset = 10;  in mac_vmode_to_var()
249 	    var->red.length = 5;  in mac_vmode_to_var()
250 	    var->green.offset = 5;  in mac_vmode_to_var()
251 	    var->green.length = 5;  in mac_vmode_to_var()
252 	    var->blue.offset = 0;  in mac_vmode_to_var()
253 	    var->blue.length = 5;  in mac_vmode_to_var()
257 	    var->bits_per_pixel = 32;  in mac_vmode_to_var()
258 	    var->red.offset = 16;  in mac_vmode_to_var()
259 	    var->red.length = 8;  in mac_vmode_to_var()
260 	    var->green.offset = 8;  in mac_vmode_to_var()
261 	    var->green.length = 8;  in mac_vmode_to_var()
262 	    var->blue.offset = 0;  in mac_vmode_to_var()
263 	    var->blue.length = 8;  in mac_vmode_to_var()
264 	    var->transp.offset = 24;  in mac_vmode_to_var()
265 	    var->transp.length = 8;  in mac_vmode_to_var()
269 	    return -EINVAL;  in mac_vmode_to_var()
271     var->xres = mode->xres;  in mac_vmode_to_var()
272     var->yres = mode->yres;  in mac_vmode_to_var()
273     var->xres_virtual = mode->xres;  in mac_vmode_to_var()
274     var->yres_virtual = mode->yres;  in mac_vmode_to_var()
275     var->height = -1;  in mac_vmode_to_var()
276     var->width = -1;  in mac_vmode_to_var()
277     var->pixclock = mode->pixclock;  in mac_vmode_to_var()
278     var->left_margin = mode->left_margin;  in mac_vmode_to_var()
279     var->right_margin = mode->right_margin;  in mac_vmode_to_var()
280     var->upper_margin = mode->upper_margin;  in mac_vmode_to_var()
281     var->lower_margin = mode->lower_margin;  in mac_vmode_to_var()
282     var->hsync_len = mode->hsync_len;  in mac_vmode_to_var()
283     var->vsync_len = mode->vsync_len;  in mac_vmode_to_var()
284     var->sync = mode->sync;  in mac_vmode_to_var()
285     var->vmode = mode->vmode;  in mac_vmode_to_var()
291  *	mac_var_to_vmode - convert var structure to MacOS vmode/cmode pair
292  *	@var: frame buffer video mode structure
293  *	@vmode: MacOS video mode
294  *	@cmode: MacOS color mode
296  *	Converts a frame buffer video mode structure to a MacOS
308     if (var->bits_per_pixel <= 8)  in mac_var_to_vmode()
310     else if (var->bits_per_pixel <= 16)  in mac_var_to_vmode()
312     else if (var->bits_per_pixel <= 32)  in mac_var_to_vmode()
315 	return -EINVAL;  in mac_var_to_vmode()
321     for (map = mac_modes; map->vmode != -1; map++) {  in mac_var_to_vmode()
322 	const struct fb_videomode *mode = map->mode;  in mac_var_to_vmode()  local
324 	if (var->xres > mode->xres || var->yres > mode->yres)  in mac_var_to_vmode()
326 	if (var->xres_virtual > mode->xres || var->yres_virtual > mode->yres)  in mac_var_to_vmode()
328 	if (var->pixclock > mode->pixclock)  in mac_var_to_vmode()
330 	if ((var->vmode & FB_VMODE_MASK) != mode->vmode)  in mac_var_to_vmode()
332 	*vmode = map->vmode;  in mac_var_to_vmode()
339 	while (map->vmode != -1) {  in mac_var_to_vmode()
340 	    const struct fb_videomode *clk_mode = map->mode;  in mac_var_to_vmode()
342 	    if (mode->xres != clk_mode->xres || mode->yres != clk_mode->yres)  in mac_var_to_vmode()
344 	    if (var->pixclock > mode->pixclock)  in mac_var_to_vmode()
346 	    if (mode->vmode != clk_mode->vmode)  in mac_var_to_vmode()
348 	    *vmode = map->vmode;  in mac_var_to_vmode()
353     return -EINVAL;  in mac_var_to_vmode()
357  *	mac_map_monitor_sense - Convert monitor sense to vmode
358  *	@sense: Macintosh monitor sense number
360  *	Converts a Macintosh monitor sense number to a MacOS
363  *	Returns MacOS vmode video mode number.
367 int mac_map_monitor_sense(int sense)  in mac_map_monitor_sense()  argument
371     for (map = mac_monitors; map->sense != -1; map++)  in mac_map_monitor_sense()
372 	if (map->sense == sense)  in mac_map_monitor_sense()
374     return map->vmode;  in mac_map_monitor_sense()
379  *	mac_find_mode - find a video mode
382  *	@mode_option: video mode name (see mac_modedb[])
385  *	Finds a suitable video mode.  Tries to set mode specified
386  *	by @mode_option.  If the name of the wanted mode begins with
387  *	'mac', the Mac video mode database will be used, otherwise it
388  *	will fall back to the standard video mode database.