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/*
* Copyright 1998 by Alan Hourihane, Wigan, England.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Alan Hourihane not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Alan Hourihane makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Alan Hourihane, <alanh@fairlite.demon.co.uk>
*
* Permedia2OutIndReg() and Permedia2InIndReg() are used to access
* the indirect Permedia2 RAMDAC registers only.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/glint/pm2ramdac.c,v 1.10 1999/07/18 03:26:57 dawes Exp $ */
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"
#include "xf86PciInfo.h"
#include "xf86Pci.h"
#include "glint_regs.h"
#include "glint.h"
void
Permedia2OutIndReg(ScrnInfoPtr pScrn,
CARD32 reg, unsigned char mask, unsigned char data)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
unsigned char tmp = 0x00;
GLINT_SLOW_WRITE_REG (reg, PM2DACIndexReg);
if (mask != 0x00)
tmp = GLINT_READ_REG (PM2DACIndexData) & mask;
GLINT_SLOW_WRITE_REG (tmp | data, PM2DACIndexData);
}
unsigned char
Permedia2InIndReg (ScrnInfoPtr pScrn, CARD32 reg)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
unsigned char ret;
GLINT_SLOW_WRITE_REG (reg, PM2DACIndexReg);
GLINTDACDelay(5);
ret = GLINT_READ_REG (PM2DACIndexData);
return (ret);
}
void
Permedia2WriteAddress (ScrnInfoPtr pScrn, CARD32 index)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINT_SLOW_WRITE_REG(index, PM2DACWriteAddress);
}
void
Permedia2WriteData (ScrnInfoPtr pScrn, unsigned char data)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINT_SLOW_WRITE_REG(data, PM2DACData);
}
void
Permedia2ReadAddress (ScrnInfoPtr pScrn, CARD32 index)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINT_SLOW_WRITE_REG(0xFF, PM2DACReadMask);
GLINT_SLOW_WRITE_REG(index, PM2DACReadAddress);
}
unsigned char
Permedia2ReadData (ScrnInfoPtr pScrn)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
GLINTDACDelay(5);
return(GLINT_READ_REG(PM2DACData));
}
void Permedia2LoadPalette(
ScrnInfoPtr pScrn,
int numColors,
int *indices,
LOCO *colors,
VisualPtr pVisual
){
GLINTPtr pGlint = GLINTPTR(pScrn);
int i, index, shift = 0, j, repeat = 1;
if (pScrn->depth == 15) {
repeat = 8;
shift = 3;
}
for(i = 0; i < numColors; i++) {
index = indices[i];
for (j = 0; j < repeat; j++) {
Permedia2WriteAddress(pScrn, (index << shift)+j);
Permedia2WriteData(pScrn, colors[index].red);
Permedia2WriteData(pScrn, colors[index].green);
Permedia2WriteData(pScrn, colors[index].blue);
}
/* for video i/o */
GLINT_SLOW_WRITE_REG(index, TexelLUTIndex);
GLINT_SLOW_WRITE_REG((colors[index].red & 0xFF) |
((colors[index].green & 0xFF) << 8) |
((colors[index].blue & 0xFF) << 16),
TexelLUTData);
}
}
/* special one for 565 mode */
void Permedia2LoadPalette16(
ScrnInfoPtr pScrn,
int numColors,
int *indices,
LOCO *colors,
VisualPtr pVisual
){
GLINTPtr pGlint = GLINTPTR(pScrn);
int i, index, j;
for(i = 0; i < numColors; i++) {
index = indices[i];
for (j = 0; j < 4; j++) {
Permedia2WriteAddress(pScrn, (index << 2)+j);
Permedia2WriteData(pScrn, colors[index >> 1].red);
Permedia2WriteData(pScrn, colors[index].green);
Permedia2WriteData(pScrn, colors[index >> 1].blue);
}
GLINT_SLOW_WRITE_REG(index, TexelLUTIndex);
GLINT_SLOW_WRITE_REG((colors[index].red & 0xFF) |
((colors[index].green & 0xFF) << 8) |
((colors[index].blue & 0xFF) << 16),
TexelLUTData);
if(index <= 31) {
for (j = 0; j < 4; j++) {
Permedia2WriteAddress(pScrn, (index << 3)+j);
Permedia2WriteData(pScrn, colors[index].red);
Permedia2WriteData(pScrn, colors[(index << 1) + 1].green);
Permedia2WriteData(pScrn, colors[index].blue);
}
}
}
}
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