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Diffstat (limited to 'drivers/video/fbdev/macmodes.c')
| -rw-r--r-- | drivers/video/fbdev/macmodes.c | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/drivers/video/fbdev/macmodes.c b/drivers/video/fbdev/macmodes.c new file mode 100644 index 000000000..af86c081d --- /dev/null +++ b/drivers/video/fbdev/macmodes.c @@ -0,0 +1,414 @@ +/* + * linux/drivers/video/macmodes.c -- Standard MacOS video modes + * + * Copyright (C) 1998 Geert Uytterhoeven + * + * 2000 - Removal of OpenFirmware dependencies by: + * - Ani Joshi + * - Brad Douglas <brad@neruo.com> + * + * 2001 - Documented with DocBook + * - Brad Douglas <brad@neruo.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/errno.h> +#include <linux/fb.h> +#include <linux/string.h> +#include <linux/module.h> + +#include "macmodes.h" + + /* + * MacOS video mode definitions + * + * Order IS important! If you change these, don't forget to update + * mac_modes[] below! + */ + +#define DEFAULT_MODEDB_INDEX 0 + +static const struct fb_videomode mac_modedb[] = { + { + /* 512x384, 60Hz, Non-Interlaced (15.67 MHz dot clock) */ + "mac2", 60, 512, 384, 63828, 80, 16, 19, 1, 32, 3, + 0, FB_VMODE_NONINTERLACED + }, { + /* 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock) */ + "mac5", 60, 640, 480, 39722, 32, 32, 33, 10, 96, 2, + 0, FB_VMODE_NONINTERLACED + }, { + /* 640x480, 67Hz, Non-Interlaced (30.0 MHz dotclock) */ + "mac6", 67, 640, 480, 33334, 80, 80, 39, 3, 64, 3, + 0, FB_VMODE_NONINTERLACED + }, { + /* 640x870, 75Hz (portrait), Non-Interlaced (57.28 MHz dot clock) */ + "mac7", 75, 640, 870, 17457, 80, 32, 42, 3, 80, 3, + 0, FB_VMODE_NONINTERLACED + }, { + /* 800x600, 56 Hz, Non-Interlaced (36.00 MHz dotclock) */ + "mac9", 56, 800, 600, 27778, 112, 40, 22, 1, 72, 2, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 800x600, 60 Hz, Non-Interlaced (40.00 MHz dotclock) */ + "mac10", 60, 800, 600, 25000, 72, 56, 23, 1, 128, 4, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 800x600, 72 Hz, Non-Interlaced (50.00 MHz dotclock) */ + "mac11", 72, 800, 600, 20000, 48, 72, 23, 37, 120, 6, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 800x600, 75 Hz, Non-Interlaced (49.50 MHz dotclock) */ + "mac12", 75, 800, 600, 20203, 144, 32, 21, 1, 80, 3, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 832x624, 75Hz, Non-Interlaced (57.6 MHz dotclock) */ + "mac13", 75, 832, 624, 17362, 208, 48, 39, 1, 64, 3, + 0, FB_VMODE_NONINTERLACED + }, { + /* 1024x768, 60 Hz, Non-Interlaced (65.00 MHz dotclock) */ + "mac14", 60, 1024, 768, 15385, 144, 40, 29, 3, 136, 6, + 0, FB_VMODE_NONINTERLACED + }, { + /* 1024x768, 72 Hz, Non-Interlaced (75.00 MHz dotclock) */ + "mac15", 72, 1024, 768, 13334, 128, 40, 29, 3, 136, 6, + 0, FB_VMODE_NONINTERLACED + }, { + /* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */ + "mac16", 75, 1024, 768, 12699, 176, 16, 28, 1, 96, 3, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock) */ + "mac17", 75, 1024, 768, 12699, 160, 32, 28, 1, 96, 3, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 1152x870, 75 Hz, Non-Interlaced (100.0 MHz dotclock) */ + "mac18", 75, 1152, 870, 10000, 128, 48, 39, 3, 128, 3, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 1280x960, 75 Hz, Non-Interlaced (126.00 MHz dotclock) */ + "mac19", 75, 1280, 960, 7937, 224, 32, 36, 1, 144, 3, + 0, FB_VMODE_NONINTERLACED + }, { + /* 1280x1024, 75 Hz, Non-Interlaced (135.00 MHz dotclock) */ + "mac20", 75, 1280, 1024, 7408, 232, 64, 38, 1, 112, 3, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 1152x768, 60 Hz, Titanium PowerBook */ + "mac21", 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { + /* 1600x1024, 60 Hz, Non-Interlaced (112.27 MHz dotclock) */ + "mac22", 60, 1600, 1024, 8908, 88, 104, 1, 10, 16, 1, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + } + +#if 0 + /* Anyone who has timings for these? */ + { + /* VMODE_512_384_60I: 512x384, 60Hz, Interlaced (NTSC) */ + "mac1", 60, 512, 384, pixclock, left, right, upper, lower, hslen, vslen, + sync, FB_VMODE_INTERLACED + }, { + /* VMODE_640_480_50I: 640x480, 50Hz, Interlaced (PAL) */ + "mac3", 50, 640, 480, pixclock, left, right, upper, lower, hslen, vslen, + sync, FB_VMODE_INTERLACED + }, { + /* VMODE_640_480_60I: 640x480, 60Hz, Interlaced (NTSC) */ + "mac4", 60, 640, 480, pixclock, left, right, upper, lower, hslen, vslen, + sync, FB_VMODE_INTERLACED + }, { + /* VMODE_768_576_50I: 768x576, 50Hz (PAL full frame), Interlaced */ + "mac8", 50, 768, 576, pixclock, left, right, upper, lower, hslen, vslen, + sync, FB_VMODE_INTERLACED + }, +#endif +}; + + + /* + * Mapping between MacOS video mode numbers and video mode definitions + * + * These MUST be ordered in + * - increasing resolution + * - decreasing pixel clock period + */ + +static const struct mode_map { + int vmode; + const struct fb_videomode *mode; +} mac_modes[] = { + /* 512x384 */ + { VMODE_512_384_60, &mac_modedb[0] }, + /* 640x480 */ + { VMODE_640_480_60, &mac_modedb[1] }, + { VMODE_640_480_67, &mac_modedb[2] }, + /* 640x870 */ + { VMODE_640_870_75P, &mac_modedb[3] }, + /* 800x600 */ + { VMODE_800_600_56, &mac_modedb[4] }, + { VMODE_800_600_60, &mac_modedb[5] }, + { VMODE_800_600_75, &mac_modedb[7] }, + { VMODE_800_600_72, &mac_modedb[6] }, + /* 832x624 */ + { VMODE_832_624_75, &mac_modedb[8] }, + /* 1024x768 */ + { VMODE_1024_768_60, &mac_modedb[9] }, + { VMODE_1024_768_70, &mac_modedb[10] }, + { VMODE_1024_768_75V, &mac_modedb[11] }, + { VMODE_1024_768_75, &mac_modedb[12] }, + /* 1152x768 */ + { VMODE_1152_768_60, &mac_modedb[16] }, + /* 1152x870 */ + { VMODE_1152_870_75, &mac_modedb[13] }, + /* 1280x960 */ + { VMODE_1280_960_75, &mac_modedb[14] }, + /* 1280x1024 */ + { VMODE_1280_1024_75, &mac_modedb[15] }, + /* 1600x1024 */ + { VMODE_1600_1024_60, &mac_modedb[17] }, + { -1, NULL } +}; + + + /* + * Mapping between monitor sense values and MacOS video mode numbers + */ + +static const struct monitor_map { + int sense; + int vmode; +} mac_monitors[] = { + { 0x000, VMODE_1280_1024_75 }, /* 21" RGB */ + { 0x114, VMODE_640_870_75P }, /* Portrait Monochrome */ + { 0x221, VMODE_512_384_60 }, /* 12" RGB*/ + { 0x331, VMODE_1280_1024_75 }, /* 21" RGB (Radius) */ + { 0x334, VMODE_1280_1024_75 }, /* 21" mono (Radius) */ + { 0x335, VMODE_1280_1024_75 }, /* 21" mono */ + { 0x40A, VMODE_640_480_60I }, /* NTSC */ + { 0x51E, VMODE_640_870_75P }, /* Portrait RGB */ + { 0x603, VMODE_832_624_75 }, /* 12"-16" multiscan */ + { 0x60b, VMODE_1024_768_70 }, /* 13"-19" multiscan */ + { 0x623, VMODE_1152_870_75 }, /* 13"-21" multiscan */ + { 0x62b, VMODE_640_480_67 }, /* 13"/14" RGB */ + { 0x700, VMODE_640_480_50I }, /* PAL */ + { 0x714, VMODE_640_480_60I }, /* NTSC */ + { 0x717, VMODE_800_600_75 }, /* VGA */ + { 0x72d, VMODE_832_624_75 }, /* 16" RGB (Goldfish) */ + { 0x730, VMODE_768_576_50I }, /* PAL (Alternate) */ + { 0x73a, VMODE_1152_870_75 }, /* 3rd party 19" */ + { 0x73f, VMODE_640_480_67 }, /* no sense lines connected at all */ + { 0xBEEF, VMODE_1600_1024_60 }, /* 22" Apple Cinema Display */ + { -1, VMODE_640_480_60 }, /* catch-all, must be last */ +}; + +/** + * mac_vmode_to_var - converts vmode/cmode pair to var structure + * @vmode: MacOS video mode + * @cmode: MacOS color mode + * @var: frame buffer video mode structure + * + * Converts a MacOS vmode/cmode pair to a frame buffer video + * mode structure. + * + * Returns negative errno on error, or zero for success. + * + */ + +int mac_vmode_to_var(int vmode, int cmode, struct fb_var_screeninfo *var) +{ + const struct fb_videomode *mode = NULL; + const struct mode_map *map; + + for (map = mac_modes; map->vmode != -1; map++) + if (map->vmode == vmode) { + mode = map->mode; + break; + } + if (!mode) + return -EINVAL; + + memset(var, 0, sizeof(struct fb_var_screeninfo)); + switch (cmode) { + case CMODE_8: + var->bits_per_pixel = 8; + var->red.offset = 0; + var->red.length = 8; + var->green.offset = 0; + var->green.length = 8; + var->blue.offset = 0; + var->blue.length = 8; + break; + + case CMODE_16: + var->bits_per_pixel = 16; + var->red.offset = 10; + var->red.length = 5; + var->green.offset = 5; + var->green.length = 5; + var->blue.offset = 0; + var->blue.length = 5; + break; + + case CMODE_32: + var->bits_per_pixel = 32; + var->red.offset = 16; + var->red.length = 8; + var->green.offset = 8; + var->green.length = 8; + var->blue.offset = 0; + var->blue.length = 8; + var->transp.offset = 24; + var->transp.length = 8; + break; + + default: + return -EINVAL; + } + var->xres = mode->xres; + var->yres = mode->yres; + var->xres_virtual = mode->xres; + var->yres_virtual = mode->yres; + var->height = -1; + var->width = -1; + var->pixclock = mode->pixclock; + var->left_margin = mode->left_margin; + var->right_margin = mode->right_margin; + var->upper_margin = mode->upper_margin; + var->lower_margin = mode->lower_margin; + var->hsync_len = mode->hsync_len; + var->vsync_len = mode->vsync_len; + var->sync = mode->sync; + var->vmode = mode->vmode; + return 0; +} +EXPORT_SYMBOL(mac_vmode_to_var); + +/** + * mac_var_to_vmode - convert var structure to MacOS vmode/cmode pair + * @var: frame buffer video mode structure + * @vmode: MacOS video mode + * @cmode: MacOS color mode + * + * Converts a frame buffer video mode structure to a MacOS + * vmode/cmode pair. + * + * Returns negative errno on error, or zero for success. + * + */ + +int mac_var_to_vmode(const struct fb_var_screeninfo *var, int *vmode, + int *cmode) +{ + const struct mode_map *map; + + if (var->bits_per_pixel <= 8) + *cmode = CMODE_8; + else if (var->bits_per_pixel <= 16) + *cmode = CMODE_16; + else if (var->bits_per_pixel <= 32) + *cmode = CMODE_32; + else + return -EINVAL; + + /* + * Find the mac_mode with a matching resolution or failing that, the + * closest larger resolution. Skip modes with a shorter pixel clock period. + */ + for (map = mac_modes; map->vmode != -1; map++) { + const struct fb_videomode *mode = map->mode; + + if (var->xres > mode->xres || var->yres > mode->yres) + continue; + if (var->xres_virtual > mode->xres || var->yres_virtual > mode->yres) + continue; + if (var->pixclock > mode->pixclock) + continue; + if ((var->vmode & FB_VMODE_MASK) != mode->vmode) + continue; + *vmode = map->vmode; + + /* + * Having found a good resolution, find the matching pixel clock + * or failing that, the closest longer pixel clock period. + */ + map++; + while (map->vmode != -1) { + const struct fb_videomode *clk_mode = map->mode; + + if (mode->xres != clk_mode->xres || mode->yres != clk_mode->yres) + break; + if (var->pixclock > mode->pixclock) + break; + if (mode->vmode != clk_mode->vmode) + continue; + *vmode = map->vmode; + map++; + } + return 0; + } + return -EINVAL; +} + +/** + * mac_map_monitor_sense - Convert monitor sense to vmode + * @sense: Macintosh monitor sense number + * + * Converts a Macintosh monitor sense number to a MacOS + * vmode number. + * + * Returns MacOS vmode video mode number. + * + */ + +int mac_map_monitor_sense(int sense) +{ + const struct monitor_map *map; + + for (map = mac_monitors; map->sense != -1; map++) + if (map->sense == sense) + break; + return map->vmode; +} +EXPORT_SYMBOL(mac_map_monitor_sense); + +/** + * mac_find_mode - find a video mode + * @var: frame buffer user defined part of display + * @info: frame buffer info structure + * @mode_option: video mode name (see mac_modedb[]) + * @default_bpp: default color depth in bits per pixel + * + * Finds a suitable video mode. Tries to set mode specified + * by @mode_option. If the name of the wanted mode begins with + * 'mac', the Mac video mode database will be used, otherwise it + * will fall back to the standard video mode database. + * + * Note: Function marked as __init and can only be used during + * system boot. + * + * Returns error code from fb_find_mode (see fb_find_mode + * function). + * + */ + +int mac_find_mode(struct fb_var_screeninfo *var, struct fb_info *info, + const char *mode_option, unsigned int default_bpp) +{ + const struct fb_videomode *db = NULL; + unsigned int dbsize = 0; + + if (mode_option && !strncmp(mode_option, "mac", 3)) { + mode_option += 3; + db = mac_modedb; + dbsize = ARRAY_SIZE(mac_modedb); + } + return fb_find_mode(var, info, mode_option, db, dbsize, + &mac_modedb[DEFAULT_MODEDB_INDEX], default_bpp); +} +EXPORT_SYMBOL(mac_find_mode); + +MODULE_LICENSE("GPL"); |