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 "colormapst.h"
39 #include "xf86RamDacPriv.h"
40
41 void
RamDacLoadPalette(ScrnInfoPtr pScrn,int numColors,int * indices,LOCO * colors,VisualPtr pVisual)42 RamDacLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices, LOCO * colors,
43 VisualPtr pVisual)
44 {
45 RamDacRecPtr hwp = RAMDACSCRPTR(pScrn);
46 int i, index;
47
48 for (i = 0; i < numColors; i++) {
49 index = indices[i];
50 (*hwp->WriteAddress) (pScrn, index);
51 (*hwp->WriteData) (pScrn, colors[index].red);
52 (*hwp->WriteData) (pScrn, colors[index].green);
53 (*hwp->WriteData) (pScrn, colors[index].blue);
54 }
55 }
56
57 Bool
RamDacHandleColormaps(ScreenPtr pScreen,int maxColors,int sigRGBbits,unsigned int flags)58 RamDacHandleColormaps(ScreenPtr pScreen, int maxColors, int sigRGBbits,
59 unsigned int flags)
60 {
61 ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
62 RamDacRecPtr hwp = RAMDACSCRPTR(pScrn);
63
64 if (hwp->LoadPalette == NULL)
65 return xf86HandleColormaps(pScreen, maxColors, sigRGBbits,
66 RamDacLoadPalette, NULL, flags);
67 else
68 return xf86HandleColormaps(pScreen, maxColors, sigRGBbits,
69 hwp->LoadPalette, NULL, flags);
70 }
71