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/*
* Copyright 1996-1997 David J. McKay
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* DAVID J. MCKAY BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/* Hacked together from mga driver and 3.3.4 NVIDIA driver by Jarno Paananen
<jpaana@s2.org> */
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/riva_dac.c,v 1.2 2003/09/16 00:17:46 mvojkovi Exp $ */
#include "riva_include.h"
Bool
RivaDACInit(ScrnInfoPtr pScrn, DisplayModePtr mode)
{
int i;
int horizDisplay = (mode->CrtcHDisplay/8) - 1;
int horizStart = (mode->CrtcHSyncStart/8) - 1;
int horizEnd = (mode->CrtcHSyncEnd/8) - 1;
int horizTotal = (mode->CrtcHTotal/8) - 5;
int horizBlankStart = (mode->CrtcHDisplay/8) - 1;
int horizBlankEnd = (mode->CrtcHTotal/8) - 1;
int vertDisplay = mode->CrtcVDisplay - 1;
int vertStart = mode->CrtcVSyncStart - 1;
int vertEnd = mode->CrtcVSyncEnd - 1;
int vertTotal = mode->CrtcVTotal - 2;
int vertBlankStart = mode->CrtcVDisplay - 1;
int vertBlankEnd = mode->CrtcVTotal - 1;
RivaPtr pRiva = RivaPTR(pScrn);
RivaRegPtr rivaReg = &pRiva->ModeReg;
RivaFBLayout *pLayout = &pRiva->CurrentLayout;
vgaRegPtr pVga;
/*
* This will initialize all of the generic VGA registers.
*/
if (!vgaHWInit(pScrn, mode))
return(FALSE);
pVga = &VGAHWPTR(pScrn)->ModeReg;
/*
* Set all CRTC values.
*/
if(mode->Flags & V_INTERLACE)
vertTotal |= 1;
pVga->CRTC[0x0] = Set8Bits(horizTotal);
pVga->CRTC[0x1] = Set8Bits(horizDisplay);
pVga->CRTC[0x2] = Set8Bits(horizBlankStart);
pVga->CRTC[0x3] = SetBitField(horizBlankEnd,4:0,4:0)
| SetBit(7);
pVga->CRTC[0x4] = Set8Bits(horizStart);
pVga->CRTC[0x5] = SetBitField(horizBlankEnd,5:5,7:7)
| SetBitField(horizEnd,4:0,4:0);
pVga->CRTC[0x6] = SetBitField(vertTotal,7:0,7:0);
pVga->CRTC[0x7] = SetBitField(vertTotal,8:8,0:0)
| SetBitField(vertDisplay,8:8,1:1)
| SetBitField(vertStart,8:8,2:2)
| SetBitField(vertBlankStart,8:8,3:3)
| SetBit(4)
| SetBitField(vertTotal,9:9,5:5)
| SetBitField(vertDisplay,9:9,6:6)
| SetBitField(vertStart,9:9,7:7);
pVga->CRTC[0x9] = SetBitField(vertBlankStart,9:9,5:5)
| SetBit(6)
| ((mode->Flags & V_DBLSCAN) ? 0x80 : 0x00);
pVga->CRTC[0x10] = Set8Bits(vertStart);
pVga->CRTC[0x11] = SetBitField(vertEnd,3:0,3:0) | SetBit(5);
pVga->CRTC[0x12] = Set8Bits(vertDisplay);
pVga->CRTC[0x13] = ((pLayout->displayWidth/8)*(pLayout->bitsPerPixel/8));
pVga->CRTC[0x15] = Set8Bits(vertBlankStart);
pVga->CRTC[0x16] = Set8Bits(vertBlankEnd);
pVga->Attribute[0x10] = 0x01;
rivaReg->screen = SetBitField(horizBlankEnd,6:6,4:4)
| SetBitField(vertBlankStart,10:10,3:3)
| SetBitField(vertStart,10:10,2:2)
| SetBitField(vertDisplay,10:10,1:1)
| SetBitField(vertTotal,10:10,0:0);
rivaReg->horiz = SetBitField(horizTotal,8:8,0:0)
| SetBitField(horizDisplay,8:8,1:1)
| SetBitField(horizBlankStart,8:8,2:2)
| SetBitField(horizStart,8:8,3:3);
rivaReg->extra = SetBitField(vertTotal,11:11,0:0)
| SetBitField(vertDisplay,11:11,2:2)
| SetBitField(vertStart,11:11,4:4)
| SetBitField(vertBlankStart,11:11,6:6);
if(mode->Flags & V_INTERLACE) {
horizTotal = (horizTotal >> 1) & ~1;
rivaReg->interlace = Set8Bits(horizTotal);
rivaReg->horiz |= SetBitField(horizTotal,8:8,4:4);
} else {
rivaReg->interlace = 0xff; /* interlace off */
}
/*
* Initialize DAC palette.
*/
if(pLayout->bitsPerPixel != 8 )
{
for (i = 0; i < 256; i++)
{
pVga->DAC[i*3] = i;
pVga->DAC[(i*3)+1] = i;
pVga->DAC[(i*3)+2] = i;
}
}
/*
* Calculate the extended registers.
*/
if(pLayout->depth < 24)
i = pLayout->depth;
else i = 32;
pRiva->riva.CalcStateExt(&pRiva->riva,
rivaReg,
i,
pLayout->displayWidth,
mode->CrtcHDisplay,
pScrn->virtualY,
mode->Clock,
mode->Flags);
rivaReg->cursorConfig = 0x02000100;
if(mode->Flags & V_DBLSCAN)
rivaReg->cursorConfig |= (1 << 4);
return (TRUE);
}
void
RivaDACRestore(ScrnInfoPtr pScrn, vgaRegPtr vgaReg, RivaRegPtr rivaReg,
Bool primary)
{
RivaPtr pRiva = RivaPTR(pScrn);
int restore = VGA_SR_MODE;
restore |= primary ? (VGA_SR_CMAP | VGA_SR_FONTS) : VGA_SR_CMAP;
pRiva->riva.LoadStateExt(&pRiva->riva, rivaReg);
vgaHWRestore(pScrn, vgaReg, restore);
}
/*
* RivaDACSave
*
* This function saves the video state.
*/
void
RivaDACSave(ScrnInfoPtr pScrn, vgaRegPtr vgaReg, RivaRegPtr rivaReg,
Bool saveFonts)
{
RivaPtr pRiva = RivaPTR(pScrn);
pRiva->riva.LockUnlock(&pRiva->riva, 0);
vgaHWSave(pScrn, vgaReg, VGA_SR_CMAP | VGA_SR_MODE |
(saveFonts? VGA_SR_FONTS : 0));
pRiva->riva.UnloadStateExt(&pRiva->riva, rivaReg);
}
#define DEPTH_SHIFT(val, w) ((val << (8 - w)) | (val >> ((w << 1) - 8)))
#define MAKE_INDEX(in, w) (DEPTH_SHIFT(in, w) * 3)
void
RivaDACLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices, LOCO *colors,
VisualPtr pVisual )
{
int i, index;
RivaPtr pRiva = RivaPTR(pScrn);
vgaRegPtr pVga;
pVga = &VGAHWPTR(pScrn)->ModeReg;
if(pRiva->CurrentLayout.depth != 8)
return;
for(i = 0; i < numColors; i++) {
index = indices[i];
pVga->DAC[index*3] = colors[index].red;
pVga->DAC[(index*3)+1] = colors[index].green;
pVga->DAC[(index*3)+2] = colors[index].blue;
}
vgaHWRestore(pScrn, pVga, VGA_SR_CMAP);
}
/*
* DDC1 support only requires DDC_SDA_MASK,
* DDC2 support requires DDC_SDA_MASK and DDC_SCL_MASK
*/
#define DDC_SDA_READ_MASK (1 << 3)
#define DDC_SCL_READ_MASK (1 << 2)
#define DDC_SDA_WRITE_MASK (1 << 4)
#define DDC_SCL_WRITE_MASK (1 << 5)
static void
Riva_I2CGetBits(I2CBusPtr b, int *clock, int *data)
{
RivaPtr pRiva = RivaPTR(xf86Screens[b->scrnIndex]);
unsigned char val;
/* Get the result. */
VGA_WR08(pRiva->riva.PCIO, 0x3d4, pRiva->DDCBase);
val = VGA_RD08(pRiva->riva.PCIO, 0x3d5);
*clock = (val & DDC_SCL_READ_MASK) != 0;
*data = (val & DDC_SDA_READ_MASK) != 0;
}
static void
Riva_I2CPutBits(I2CBusPtr b, int clock, int data)
{
RivaPtr pRiva = RivaPTR(xf86Screens[b->scrnIndex]);
unsigned char val;
VGA_WR08(pRiva->riva.PCIO, 0x3d4, pRiva->DDCBase + 1);
val = VGA_RD08(pRiva->riva.PCIO, 0x3d5) & 0xf0;
if (clock)
val |= DDC_SCL_WRITE_MASK;
else
val &= ~DDC_SCL_WRITE_MASK;
if (data)
val |= DDC_SDA_WRITE_MASK;
else
val &= ~DDC_SDA_WRITE_MASK;
VGA_WR08(pRiva->riva.PCIO, 0x3d4, pRiva->DDCBase + 1);
VGA_WR08(pRiva->riva.PCIO, 0x3d5, val | 0x1);
}
Bool
RivaDACi2cInit(ScrnInfoPtr pScrn)
{
RivaPtr pRiva = RivaPTR(pScrn);
I2CBusPtr I2CPtr;
I2CPtr = xf86CreateI2CBusRec();
if(!I2CPtr) return FALSE;
pRiva->I2C = I2CPtr;
I2CPtr->BusName = "DDC";
I2CPtr->scrnIndex = pScrn->scrnIndex;
I2CPtr->I2CPutBits = Riva_I2CPutBits;
I2CPtr->I2CGetBits = Riva_I2CGetBits;
I2CPtr->AcknTimeout = 5;
if (!xf86I2CBusInit(I2CPtr)) {
return FALSE;
}
return TRUE;
}
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