1/*
2 * Copyright 1998 by Alan Hourihane, Wigan, England.
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of Alan Hourihane not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission.  Alan Hourihane makes no representations
11 * about the suitability of this software for any purpose.  It is provided
12 * "as is" without express or implied warranty.
13 *
14 * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20 * PERFORMANCE OF THIS SOFTWARE.
21 *
22 * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
23 *
24 * Generic RAMDAC access to colormaps.
25 */
26
27#ifdef HAVE_XORG_CONFIG_H
28#include <xorg-config.h>
29#endif
30
31#include <X11/X.h>
32#include <X11/Xproto.h>
33#include "windowstr.h"
34#include "mipointer.h"
35#include "micmap.h"
36
37#include "xf86.h"
38#include "compiler.h"
39#include "colormapst.h"
40#include "xf86RamDacPriv.h"
41
42void
43RamDacLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices, LOCO *colors,
44		 VisualPtr pVisual)
45{
46    RamDacRecPtr hwp = RAMDACSCRPTR(pScrn);
47    int i, index;
48
49    for (i = 0; i < numColors; i++) {
50	index = indices[i];
51	(*hwp->WriteAddress)(pScrn, index);
52	(*hwp->WriteData)(pScrn, colors[index].red);
53	(*hwp->WriteData)(pScrn, colors[index].green);
54	(*hwp->WriteData)(pScrn, colors[index].blue);
55    }
56}
57
58Bool
59RamDacHandleColormaps(ScreenPtr pScreen, int maxColors, int sigRGBbits,
60		      unsigned int flags)
61{
62    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
63    RamDacRecPtr hwp = RAMDACSCRPTR(pScrn);
64
65    if (hwp->LoadPalette == NULL)
66   	return xf86HandleColormaps(pScreen, maxColors, sigRGBbits,
67			     RamDacLoadPalette, NULL, flags);
68    else
69    	return xf86HandleColormaps(pScreen, maxColors, sigRGBbits,
70			     hwp->LoadPalette, NULL, flags);
71}
72