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Diffstat (limited to 'src/riva_dac.c')
| -rw-r--r-- | src/riva_dac.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/riva_dac.c b/src/riva_dac.c new file mode 100644 index 0000000..348e526 --- /dev/null +++ b/src/riva_dac.c @@ -0,0 +1,280 @@ +/* + * 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; +} + |