1 files changed, 120 insertions, 0 deletions
diff --git a/src/s3v_i2c.c b/src/s3v_i2c.c
new file mode 100644
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--- /dev/null
+++ b/src/s3v_i2c.c
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+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/s3virge/s3v_i2c.c,v 1.4 2000/03/31 20:13:32 dawes Exp $ */
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc.  All Rights Reserved.
+
+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, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+XFREE86 PROJECT 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.
+
+Except as contained in this notice, the name of the XFree86 Project shall not
+be used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the XFree86 Project.
+*/
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc.  All Rights Reserved.
+
+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, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+XFREE86 PROJECT 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.
+
+Except as contained in this notice, the name of the XFree86 Project shall not
+be used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the XFree86 Project.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "compiler.h"
+
+#include "xf86Pci.h"
+#include "xf86PciInfo.h"
+
+#include "vgaHW.h"
+
+#include "s3v.h"
+
+static void
+s3v_I2CPutBits(I2CBusPtr b, int clock,  int data)
+{
+    S3VPtr ps3v = S3VPTR(xf86Screens[b->scrnIndex]);
+    unsigned int reg = 0x10;
+
+    if(clock) reg |= 0x1;
+    if(data)  reg |= 0x2;
+
+    OUTREG(DDC_REG,reg);
+    /*ErrorF("s3v_I2CPutBits: %d %d\n", clock, data); */
+}
+
+static void
+s3v_I2CGetBits(I2CBusPtr b, int *clock, int *data)
+{
+    S3VPtr ps3v = S3VPTR(xf86Screens[b->scrnIndex]);
+    unsigned int reg;
+
+    reg = (INREG(DDC_REG));
+
+    *clock = reg & 0x4;
+    *data = reg & 0x8;
+    
+    /*ErrorF("s3v_I2CGetBits: %d %d\n", *clock, *data);*/
+}
+
+Bool 
+S3V_I2CInit(ScrnInfoPtr pScrn)
+{
+    S3VPtr ps3v = S3VPTR(pScrn);
+    I2CBusPtr I2CPtr;
+
+
+    I2CPtr = xf86CreateI2CBusRec();
+    if(!I2CPtr) return FALSE;
+
+    ps3v->I2C = I2CPtr;
+
+    I2CPtr->BusName    = "I2C bus";
+    I2CPtr->scrnIndex  = pScrn->scrnIndex;
+    I2CPtr->I2CPutBits = s3v_I2CPutBits;
+    I2CPtr->I2CGetBits = s3v_I2CGetBits;
+
+    if (!xf86I2CBusInit(I2CPtr))
+      return FALSE;
+
+    return TRUE;
+}
+
+
+