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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>
*
* Permedia2vOutIndReg() and Permedia2vInIndReg() are used to access
* the indirect Permedia2v RAMDAC registers only.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/glint/pm2vramdac.c,v 1.4 1999/02/12 22:52:05 hohndel 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
Permedia2vOutIndReg(ScrnInfoPtr pScrn,
CARD32 reg, unsigned char mask, unsigned char data)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
unsigned char tmp = 0x00;
GLINT_SLOW_WRITE_REG((reg>>8) & 0xff, PM2VDACIndexRegHigh);
GLINT_SLOW_WRITE_REG(reg&0xff, PM2VDACIndexRegLow);
if (mask != 0x00)
tmp = GLINT_READ_REG (PM2VDACIndexData) & mask;
GLINT_SLOW_WRITE_REG (tmp | data, PM2VDACIndexData);
}
unsigned char
Permedia2vInIndReg (ScrnInfoPtr pScrn, CARD32 reg)
{
GLINTPtr pGlint = GLINTPTR(pScrn);
unsigned char ret;
GLINT_SLOW_WRITE_REG (reg&0xff, PM2VDACIndexRegLow);
GLINT_SLOW_WRITE_REG((reg>>8) & 0xff, PM2VDACIndexRegHigh);
ret = GLINT_READ_REG (PM2VDACIndexData);
return (ret);
}
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