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OpenCloudOS-Kernel/drivers/usb/misc/sisusbvga/sisusb_init.c

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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
/*
* sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
*
* Display mode initializing code
*
* Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
*
* If distributed as part of the Linux kernel, this code is licensed under the
* terms of the GPL v2.
*
* Otherwise, the following license terms apply:
*
* * Redistribution and use in source and binary forms, with or without
* * modification, are permitted provided that the following conditions
* * are met:
* * 1) Redistributions of source code must retain the above copyright
* * notice, this list of conditions and the following disclaimer.
* * 2) Redistributions in binary form must reproduce the above copyright
* * notice, this list of conditions and the following disclaimer in the
* * documentation and/or other materials provided with the distribution.
* * 3) The name of the author may not be used to endorse or promote products
* * derived from this software without specific prior written permission.
* *
* * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Author: Thomas Winischhofer <thomas@winischhofer.net>
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/poll.h>
#include <linux/spinlock.h>
#include "sisusb.h"
#include "sisusb_init.h"
/*********************************************/
/* POINTER INITIALIZATION */
/*********************************************/
static void SiSUSB_InitPtr(struct SiS_Private *SiS_Pr)
{
SiS_Pr->SiS_ModeResInfo = SiSUSB_ModeResInfo;
SiS_Pr->SiS_StandTable = SiSUSB_StandTable;
SiS_Pr->SiS_SModeIDTable = SiSUSB_SModeIDTable;
SiS_Pr->SiS_EModeIDTable = SiSUSB_EModeIDTable;
SiS_Pr->SiS_RefIndex = SiSUSB_RefIndex;
SiS_Pr->SiS_CRT1Table = SiSUSB_CRT1Table;
SiS_Pr->SiS_VCLKData = SiSUSB_VCLKData;
}
/*********************************************/
/* HELPER: SetReg, GetReg */
/*********************************************/
static void
SiS_SetReg(struct SiS_Private *SiS_Pr, unsigned long port,
unsigned short index, unsigned short data)
{
sisusb_setidxreg(SiS_Pr->sisusb, port, index, data);
}
static void
SiS_SetRegByte(struct SiS_Private *SiS_Pr, unsigned long port,
unsigned short data)
{
sisusb_setreg(SiS_Pr->sisusb, port, data);
}
static unsigned char
SiS_GetReg(struct SiS_Private *SiS_Pr, unsigned long port, unsigned short index)
{
u8 data;
sisusb_getidxreg(SiS_Pr->sisusb, port, index, &data);
return data;
}
static unsigned char
SiS_GetRegByte(struct SiS_Private *SiS_Pr, unsigned long port)
{
u8 data;
sisusb_getreg(SiS_Pr->sisusb, port, &data);
return data;
}
static void
SiS_SetRegANDOR(struct SiS_Private *SiS_Pr, unsigned long port,
unsigned short index, unsigned short DataAND,
unsigned short DataOR)
{
sisusb_setidxregandor(SiS_Pr->sisusb, port, index, DataAND, DataOR);
}
static void
SiS_SetRegAND(struct SiS_Private *SiS_Pr, unsigned long port,
unsigned short index, unsigned short DataAND)
{
sisusb_setidxregand(SiS_Pr->sisusb, port, index, DataAND);
}
static void
SiS_SetRegOR(struct SiS_Private *SiS_Pr, unsigned long port,
unsigned short index, unsigned short DataOR)
{
sisusb_setidxregor(SiS_Pr->sisusb, port, index, DataOR);
}
/*********************************************/
/* HELPER: DisplayOn, DisplayOff */
/*********************************************/
static void SiS_DisplayOn(struct SiS_Private *SiS_Pr)
{
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, 0xDF);
}
/*********************************************/
/* HELPER: Init Port Addresses */
/*********************************************/
static void SiSUSBRegInit(struct SiS_Private *SiS_Pr, unsigned long BaseAddr)
{
SiS_Pr->SiS_P3c4 = BaseAddr + 0x14;
SiS_Pr->SiS_P3d4 = BaseAddr + 0x24;
SiS_Pr->SiS_P3c0 = BaseAddr + 0x10;
SiS_Pr->SiS_P3ce = BaseAddr + 0x1e;
SiS_Pr->SiS_P3c2 = BaseAddr + 0x12;
SiS_Pr->SiS_P3ca = BaseAddr + 0x1a;
SiS_Pr->SiS_P3c6 = BaseAddr + 0x16;
SiS_Pr->SiS_P3c7 = BaseAddr + 0x17;
SiS_Pr->SiS_P3c8 = BaseAddr + 0x18;
SiS_Pr->SiS_P3c9 = BaseAddr + 0x19;
SiS_Pr->SiS_P3cb = BaseAddr + 0x1b;
SiS_Pr->SiS_P3cc = BaseAddr + 0x1c;
SiS_Pr->SiS_P3cd = BaseAddr + 0x1d;
SiS_Pr->SiS_P3da = BaseAddr + 0x2a;
SiS_Pr->SiS_Part1Port = BaseAddr + SIS_CRT2_PORT_04;
}
/*********************************************/
/* HELPER: GetSysFlags */
/*********************************************/
static void SiS_GetSysFlags(struct SiS_Private *SiS_Pr)
{
SiS_Pr->SiS_MyCR63 = 0x63;
}
/*********************************************/
/* HELPER: Init PCI & Engines */
/*********************************************/
static void SiSInitPCIetc(struct SiS_Private *SiS_Pr)
{
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x20, 0xa1);
/* - Enable 2D (0x40)
* - Enable 3D (0x02)
* - Enable 3D vertex command fetch (0x10)
* - Enable 3D command parser (0x08)
* - Enable 3D G/L transformation engine (0x80)
*/
SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1E, 0xDA);
}
/*********************************************/
/* HELPER: SET SEGMENT REGISTERS */
/*********************************************/
static void SiS_SetSegRegLower(struct SiS_Private *SiS_Pr, unsigned short value)
{
unsigned short temp;
value &= 0x00ff;
temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb) & 0xf0;
temp |= (value >> 4);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb, temp);
temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd) & 0xf0;
temp |= (value & 0x0f);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd, temp);
}
static void SiS_SetSegRegUpper(struct SiS_Private *SiS_Pr, unsigned short value)
{
unsigned short temp;
value &= 0x00ff;
temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb) & 0x0f;
temp |= (value & 0xf0);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb, temp);
temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd) & 0x0f;
temp |= (value << 4);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd, temp);
}
static void SiS_SetSegmentReg(struct SiS_Private *SiS_Pr, unsigned short value)
{
SiS_SetSegRegLower(SiS_Pr, value);
SiS_SetSegRegUpper(SiS_Pr, value);
}
static void SiS_ResetSegmentReg(struct SiS_Private *SiS_Pr)
{
SiS_SetSegmentReg(SiS_Pr, 0);
}
static void
SiS_SetSegmentRegOver(struct SiS_Private *SiS_Pr, unsigned short value)
{
unsigned short temp = value >> 8;
temp &= 0x07;
temp |= (temp << 4);
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1d, temp);
SiS_SetSegmentReg(SiS_Pr, value);
}
static void SiS_ResetSegmentRegOver(struct SiS_Private *SiS_Pr)
{
SiS_SetSegmentRegOver(SiS_Pr, 0);
}
static void SiS_ResetSegmentRegisters(struct SiS_Private *SiS_Pr)
{
SiS_ResetSegmentReg(SiS_Pr);
SiS_ResetSegmentRegOver(SiS_Pr);
}
/*********************************************/
/* HELPER: SearchModeID */
/*********************************************/
static int
SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
unsigned short *ModeIdIndex)
{
if ((*ModeNo) <= 0x13) {
if ((*ModeNo) != 0x03)
return 0;
(*ModeIdIndex) = 0;
} else {
for (*ModeIdIndex = 0;; (*ModeIdIndex)++) {
if (SiS_Pr->SiS_EModeIDTable[*ModeIdIndex].Ext_ModeID ==
(*ModeNo))
break;
if (SiS_Pr->SiS_EModeIDTable[*ModeIdIndex].Ext_ModeID ==
0xFF)
return 0;
}
}
return 1;
}
/*********************************************/
/* HELPER: ENABLE CRT1 */
/*********************************************/
static void SiS_HandleCRT1(struct SiS_Private *SiS_Pr)
{
/* Enable CRT1 gating */
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, SiS_Pr->SiS_MyCR63, 0xbf);
}
/*********************************************/
/* HELPER: GetColorDepth */
/*********************************************/
static unsigned short
SiS_GetColorDepth(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex)
{
static const unsigned short ColorDepth[6] = { 1, 2, 4, 4, 6, 8 };
unsigned short modeflag;
short index;
if (ModeNo <= 0x13) {
modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
} else {
modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
}
index = (modeflag & ModeTypeMask) - ModeEGA;
if (index < 0)
index = 0;
return ColorDepth[index];
}
/*********************************************/
/* HELPER: GetOffset */
/*********************************************/
static unsigned short
SiS_GetOffset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex, unsigned short rrti)
{
unsigned short xres, temp, colordepth, infoflag;
infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
xres = SiS_Pr->SiS_RefIndex[rrti].XRes;
colordepth = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex);
temp = xres / 16;
if (infoflag & InterlaceMode)
temp <<= 1;
temp *= colordepth;
if (xres % 16)
temp += (colordepth >> 1);
return temp;
}
/*********************************************/
/* SEQ */
/*********************************************/
static void
SiS_SetSeqRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
{
unsigned char SRdata;
int i;
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x00, 0x03);
SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[0] | 0x20;
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, SRdata);
for (i = 2; i <= 4; i++) {
SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[i - 1];
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, i, SRdata);
}
}
/*********************************************/
/* MISC */
/*********************************************/
static void
SiS_SetMiscRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
{
unsigned char Miscdata = SiS_Pr->SiS_StandTable[StandTableIndex].MISC;
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c2, Miscdata);
}
/*********************************************/
/* CRTC */
/*********************************************/
static void
SiS_SetCRTCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
{
unsigned char CRTCdata;
unsigned short i;
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, 0x11, 0x7f);
for (i = 0; i <= 0x18; i++) {
CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, i, CRTCdata);
}
}
/*********************************************/
/* ATT */
/*********************************************/
static void
SiS_SetATTRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
{
unsigned char ARdata;
unsigned short i;
for (i = 0; i <= 0x13; i++) {
ARdata = SiS_Pr->SiS_StandTable[StandTableIndex].ATTR[i];
SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, i);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, ARdata);
}
SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x14);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x00);
SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x20);
SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
}
/*********************************************/
/* GRC */
/*********************************************/
static void
SiS_SetGRCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
{
unsigned char GRdata;
unsigned short i;
for (i = 0; i <= 0x08; i++) {
GRdata = SiS_Pr->SiS_StandTable[StandTableIndex].GRC[i];
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3ce, i, GRdata);
}
if (SiS_Pr->SiS_ModeType > ModeVGA) {
/* 256 color disable */
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3ce, 0x05, 0xBF);
}
}
/*********************************************/
/* CLEAR EXTENDED REGISTERS */
/*********************************************/
static void SiS_ClearExt1Regs(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
{
int i;
for (i = 0x0A; i <= 0x0E; i++) {
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, i, 0x00);
}
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x37, 0xFE);
}
/*********************************************/
/* Get rate index */
/*********************************************/
static unsigned short
SiS_GetRatePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex)
{
unsigned short rrti, i, index, temp;
if (ModeNo <= 0x13)
return 0xFFFF;
index = SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x33) & 0x0F;
if (index > 0)
index--;
rrti = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
ModeNo = SiS_Pr->SiS_RefIndex[rrti].ModeID;
i = 0;
do {
if (SiS_Pr->SiS_RefIndex[rrti + i].ModeID != ModeNo)
break;
temp =
SiS_Pr->SiS_RefIndex[rrti + i].Ext_InfoFlag & ModeTypeMask;
if (temp < SiS_Pr->SiS_ModeType)
break;
i++;
index--;
} while (index != 0xFFFF);
i--;
return (rrti + i);
}
/*********************************************/
/* SYNC */
/*********************************************/
static void SiS_SetCRT1Sync(struct SiS_Private *SiS_Pr, unsigned short rrti)
{
unsigned short sync = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag >> 8;
sync &= 0xC0;
sync |= 0x2f;
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c2, sync);
}
/*********************************************/
/* CRTC/2 */
/*********************************************/
static void
SiS_SetCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex, unsigned short rrti)
{
unsigned char index;
unsigned short temp, i, j, modeflag;
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, 0x11, 0x7f);
modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRT1CRTC;
for (i = 0, j = 0; i <= 7; i++, j++) {
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
SiS_Pr->SiS_CRT1Table[index].CR[i]);
}
for (j = 0x10; i <= 10; i++, j++) {
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
SiS_Pr->SiS_CRT1Table[index].CR[i]);
}
for (j = 0x15; i <= 12; i++, j++) {
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
SiS_Pr->SiS_CRT1Table[index].CR[i]);
}
for (j = 0x0A; i <= 15; i++, j++) {
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, j,
SiS_Pr->SiS_CRT1Table[index].CR[i]);
}
temp = SiS_Pr->SiS_CRT1Table[index].CR[16] & 0xE0;
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0E, temp);
temp = ((SiS_Pr->SiS_CRT1Table[index].CR[16]) & 0x01) << 5;
if (modeflag & DoubleScanMode)
temp |= 0x80;
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3d4, 0x09, 0x5F, temp);
if (SiS_Pr->SiS_ModeType > ModeVGA)
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x14, 0x4F);
}
/*********************************************/
/* OFFSET & PITCH */
/*********************************************/
/* (partly overruled by SetPitch() in XF86) */
/*********************************************/
static void
SiS_SetCRT1Offset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex, unsigned short rrti)
{
unsigned short du = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, rrti);
unsigned short infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
unsigned short temp;
temp = (du >> 8) & 0x0f;
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0E, 0xF0, temp);
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x13, (du & 0xFF));
if (infoflag & InterlaceMode)
du >>= 1;
du <<= 5;
temp = (du >> 8) & 0xff;
if (du & 0xff)
temp++;
temp++;
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x10, temp);
}
/*********************************************/
/* VCLK */
/*********************************************/
static void
SiS_SetCRT1VCLK(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short rrti)
{
unsigned short index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRTVCLK;
unsigned short clka = SiS_Pr->SiS_VCLKData[index].SR2B;
unsigned short clkb = SiS_Pr->SiS_VCLKData[index].SR2C;
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x31, 0xCF);
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x2B, clka);
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x2C, clkb);
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x2D, 0x01);
}
/*********************************************/
/* FIFO */
/*********************************************/
static void
SiS_SetCRT1FIFO_310(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short mi)
{
unsigned short modeflag = SiS_Pr->SiS_EModeIDTable[mi].Ext_ModeFlag;
/* disable auto-threshold */
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x3D, 0xFE);
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x08, 0xAE);
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x09, 0xF0);
if (ModeNo <= 0x13)
return;
if ((!(modeflag & DoubleScanMode)) || (!(modeflag & HalfDCLK))) {
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x08, 0x34);
SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x3D, 0x01);
}
}
/*********************************************/
/* MODE REGISTERS */
/*********************************************/
static void
SiS_SetVCLKState(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short rrti)
{
unsigned short data = 0, VCLK = 0, index = 0;
if (ModeNo > 0x13) {
index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRTVCLK;
VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
}
if (VCLK >= 166)
data |= 0x0c;
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x32, 0xf3, data);
if (VCLK >= 166)
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1f, 0xe7);
/* DAC speed */
data = 0x03;
if (VCLK >= 260)
data = 0x00;
else if (VCLK >= 160)
data = 0x01;
else if (VCLK >= 135)
data = 0x02;
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x07, 0xF8, data);
}
static void
SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex, unsigned short rrti)
{
unsigned short data, infoflag = 0, modeflag;
if (ModeNo <= 0x13)
modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
else {
modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
}
/* Disable DPMS */
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1F, 0x3F);
data = 0;
if (ModeNo > 0x13) {
if (SiS_Pr->SiS_ModeType > ModeEGA) {
data |= 0x02;
data |= ((SiS_Pr->SiS_ModeType - ModeVGA) << 2);
}
if (infoflag & InterlaceMode)
data |= 0x20;
}
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x06, 0xC0, data);
data = 0;
if (infoflag & InterlaceMode) {
/* data = (Hsync / 8) - ((Htotal / 8) / 2) + 3 */
unsigned short hrs =
(SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x04) |
((SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0b) & 0xc0) << 2))
- 3;
unsigned short hto =
(SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x00) |
((SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0b) & 0x03) << 8))
+ 5;
data = hrs - (hto >> 1) + 3;
}
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x19, (data & 0xFF));
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3d4, 0x1a, 0xFC, (data >> 8));
if (modeflag & HalfDCLK)
SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, 0x08);
data = 0;
if (modeflag & LineCompareOff)
data = 0x08;
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0F, 0xB7, data);
if ((SiS_Pr->SiS_ModeType == ModeEGA) && (ModeNo > 0x13))
SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0F, 0x40);
SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x31, 0xfb);
data = 0x60;
if (SiS_Pr->SiS_ModeType != ModeText) {
data ^= 0x60;
if (SiS_Pr->SiS_ModeType != ModeEGA)
data ^= 0xA0;
}
SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x21, 0x1F, data);
SiS_SetVCLKState(SiS_Pr, ModeNo, rrti);
if (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x31) & 0x40)
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x52, 0x2c);
else
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x52, 0x6c);
}
/*********************************************/
/* LOAD DAC */
/*********************************************/
static void
SiS_WriteDAC(struct SiS_Private *SiS_Pr, unsigned long DACData,
unsigned short shiftflag, unsigned short dl, unsigned short ah,
unsigned short al, unsigned short dh)
{
unsigned short d1, d2, d3;
switch (dl) {
case 0:
d1 = dh;
d2 = ah;
d3 = al;
break;
case 1:
d1 = ah;
d2 = al;
d3 = dh;
break;
default:
d1 = al;
d2 = dh;
d3 = ah;
}
SiS_SetRegByte(SiS_Pr, DACData, (d1 << shiftflag));
SiS_SetRegByte(SiS_Pr, DACData, (d2 << shiftflag));
SiS_SetRegByte(SiS_Pr, DACData, (d3 << shiftflag));
}
static void
SiS_LoadDAC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short mi)
{
unsigned short data, data2, time, i, j, k, m, n, o;
unsigned short si, di, bx, sf;
unsigned long DACAddr, DACData;
const unsigned char *table = NULL;
if (ModeNo < 0x13)
data = SiS_Pr->SiS_SModeIDTable[mi].St_ModeFlag;
else
data = SiS_Pr->SiS_EModeIDTable[mi].Ext_ModeFlag;
data &= DACInfoFlag;
j = time = 64;
if (data == 0x00)
table = SiS_MDA_DAC;
else if (data == 0x08)
table = SiS_CGA_DAC;
else if (data == 0x10)
table = SiS_EGA_DAC;
else {
j = 16;
time = 256;
table = SiS_VGA_DAC;
}
DACAddr = SiS_Pr->SiS_P3c8;
DACData = SiS_Pr->SiS_P3c9;
sf = 0;
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c6, 0xFF);
SiS_SetRegByte(SiS_Pr, DACAddr, 0x00);
for (i = 0; i < j; i++) {
data = table[i];
for (k = 0; k < 3; k++) {
data2 = 0;
if (data & 0x01)
data2 += 0x2A;
if (data & 0x02)
data2 += 0x15;
SiS_SetRegByte(SiS_Pr, DACData, (data2 << sf));
data >>= 2;
}
}
if (time == 256) {
for (i = 16; i < 32; i++) {
data = table[i] << sf;
for (k = 0; k < 3; k++)
SiS_SetRegByte(SiS_Pr, DACData, data);
}
si = 32;
for (m = 0; m < 9; m++) {
di = si;
bx = si + 4;
for (n = 0; n < 3; n++) {
for (o = 0; o < 5; o++) {
SiS_WriteDAC(SiS_Pr, DACData, sf, n,
table[di], table[bx],
table[si]);
si++;
}
si -= 2;
for (o = 0; o < 3; o++) {
SiS_WriteDAC(SiS_Pr, DACData, sf, n,
table[di], table[si],
table[bx]);
si--;
}
}
si += 5;
}
}
}
/*********************************************/
/* SET CRT1 REGISTER GROUP */
/*********************************************/
static void
SiS_SetCRT1Group(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
unsigned short ModeIdIndex)
{
unsigned short StandTableIndex, rrti;
SiS_Pr->SiS_CRT1Mode = ModeNo;
if (ModeNo <= 0x13)
StandTableIndex = 0;
else
StandTableIndex = 1;
SiS_ResetSegmentRegisters(SiS_Pr);
SiS_SetSeqRegs(SiS_Pr, StandTableIndex);
SiS_SetMiscRegs(SiS_Pr, StandTableIndex);
SiS_SetCRTCRegs(SiS_Pr, StandTableIndex);
SiS_SetATTRegs(SiS_Pr, StandTableIndex);
SiS_SetGRCRegs(SiS_Pr, StandTableIndex);
SiS_ClearExt1Regs(SiS_Pr, ModeNo);
rrti = SiS_GetRatePtr(SiS_Pr, ModeNo, ModeIdIndex);
if (rrti != 0xFFFF) {
SiS_SetCRT1Sync(SiS_Pr, rrti);
SiS_SetCRT1CRTC(SiS_Pr, ModeNo, ModeIdIndex, rrti);
SiS_SetCRT1Offset(SiS_Pr, ModeNo, ModeIdIndex, rrti);
SiS_SetCRT1VCLK(SiS_Pr, ModeNo, rrti);
}
SiS_SetCRT1FIFO_310(SiS_Pr, ModeNo, ModeIdIndex);
SiS_SetCRT1ModeRegs(SiS_Pr, ModeNo, ModeIdIndex, rrti);
SiS_LoadDAC(SiS_Pr, ModeNo, ModeIdIndex);
SiS_DisplayOn(SiS_Pr);
}
/*********************************************/
/* SiSSetMode() */
/*********************************************/
int SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
{
unsigned short ModeIdIndex;
unsigned long BaseAddr = SiS_Pr->IOAddress;
SiSUSB_InitPtr(SiS_Pr);
SiSUSBRegInit(SiS_Pr, BaseAddr);
SiS_GetSysFlags(SiS_Pr);
if (!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex)))
return 0;
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x05, 0x86);
SiSInitPCIetc(SiS_Pr);
ModeNo &= 0x7f;
SiS_Pr->SiS_ModeType =
SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag & ModeTypeMask;
SiS_Pr->SiS_SetFlag = LowModeTests;
/* Set mode on CRT1 */
SiS_SetCRT1Group(SiS_Pr, ModeNo, ModeIdIndex);
SiS_HandleCRT1(SiS_Pr);
SiS_DisplayOn(SiS_Pr);
SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c6, 0xFF);
/* Store mode number */
SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x34, ModeNo);
return 1;
}
int SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo)
{
unsigned short ModeNo = 0;
int i;
SiSUSB_InitPtr(SiS_Pr);
if (VModeNo == 0x03) {
ModeNo = 0x03;
} else {
i = 0;
do {
if (SiS_Pr->SiS_EModeIDTable[i].Ext_VESAID == VModeNo) {
ModeNo = SiS_Pr->SiS_EModeIDTable[i].Ext_ModeID;
break;
}
} while (SiS_Pr->SiS_EModeIDTable[i++].Ext_ModeID != 0xff);
}
if (!ModeNo)
return 0;
return SiSUSBSetMode(SiS_Pr, ModeNo);
}
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