Initial revisionXORG-STABLE

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;
+}
+