macmodes.c

S3C44B0X下的LCD （framebuffer）驱动资料与相关代码

/*
 *  linux/drivers/video/macmodes.c -- Standard MacOS video modes
 *
 *	Copyright (C) 1998 Geert Uytterhoeven
 *
 *      2000 - Removal of OpenFirmware dependencies by:
 *      - Ani Joshi
 *      - Brad Douglas <[e-mail]>
 *
 *	2001 - Documented with DocBook
 *	- Brad Douglas <[e-mail]>
 *
 *  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/config.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/string.h>

#ifdef CONFIG_FB_COMPAT_XPMAC
#include <asm/vc_ioctl.h>
#endif

#include <video/fbcon.h>
#include <video/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[] = {
    {
	/* 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
    }, {
	/* 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_512_384_60: 512x384, 60Hz, Non-Interlaced */
    	"mac2", 60, 512, 384, pixclock, left, right, upper, lower, hslen, vslen,
	sync, FB_VMODE_NONINTERLACED
    }, {
	/* 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_640_870_75P: 640x870, 75Hz (portrait), Non-Interlaced */
	"mac7", 75, 640, 870, pixclock, left, right, upper, lower, hslen, vslen,
	sync, FB_VMODE_NONINTERLACED
    }, {
	/* 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 refresh rate
     */

static const struct mode_map {
    int vmode;
    const struct fb_videomode *mode;
} mac_modes[] = {
    /* 640x480 */
    { VMODE_640_480_67, &mac_modedb[1] },
    { VMODE_640_480_60, &mac_modedb[0] },
    /* 800x600 */
    { VMODE_800_600_75, &mac_modedb[5] },
    { VMODE_800_600_72, &mac_modedb[4] },
    { VMODE_800_600_60, &mac_modedb[3] },
    { VMODE_800_600_56, &mac_modedb[2] },
    /* 832x624 */
    { VMODE_832_624_75, &mac_modedb[6] },
    /* 1024x768 */
    { VMODE_1024_768_75, &mac_modedb[10] },
    { VMODE_1024_768_75V, &mac_modedb[9] },
    { VMODE_1024_768_70, &mac_modedb[8] },
    { VMODE_1024_768_60, &mac_modedb[7] },
    /* 1152x768 */
    { VMODE_1152_768_60, &mac_modedb[14] },
    /* 1152x870 */
    { VMODE_1152_870_75, &mac_modedb[11] },
    /* 1280x960 */
    { VMODE_1280_960_75, &mac_modedb[12] },
    /* 1280x1024 */
    { VMODE_1280_1024_75, &mac_modedb[13] },
    /* 1600x1024 */
    { VMODE_1600_1024_60, &mac_modedb[15] },
    { -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 */
};

#ifdef CONFIG_FB_COMPAT_XPMAC
struct fb_info *console_fb_info = NULL;
struct vc_mode display_info;

static u16 palette_red[16];
static u16 palette_green[16];
static u16 palette_blue[16];
static struct fb_cmap palette_cmap = {
    0, 16, palette_red, palette_green, palette_blue, NULL
};


/**
 *	console_getmode - get current mode
 *	@mode: virtual console mode structure
 *
 *	Populates @mode with the current mode held in the global
 *	display_info structure.
 *
 *	Note, this function is only for XPMAC compatibility.
 *
 *	Returns zero.
 */

int console_getmode(struct vc_mode *mode)
{
    *mode = display_info;
    return 0;
}


/**
 *	console_setmode - sets current console mode
 *	@mode: virtual console mode structure
 *	@doit: boolean, 0 test mode, 1 test and activate mode
 *
 *	Sets @mode for all virtual consoles if @doit is non-zero,
 *	otherwise, test a mode for validity.
 *
 *	Note, this function is only for XPMAC compatibility.
 *
 *	Returns negative errno on error, or zero for success.
 *
 */

int console_setmode(struct vc_mode *mode, int doit)
{
    struct fb_var_screeninfo var;
    int cmode, err;

    if (!console_fb_info)
        return -EOPNOTSUPP;

    switch(mode->depth) {
        case 0:
        case 8:
            cmode = CMODE_8;
            break;
        case 16:
            cmode = CMODE_16;
            break;
        case 24:
        case 32:
            cmode = CMODE_32;
            break;
        default:
            return -EINVAL;
    }

    if ((err = mac_vmode_to_var(mode->mode, cmode, &var)))