src/add-ons/accelerants/intel_810/i810_init.cpp

   1 /*
   2  * Copyright 2012 Haiku, Inc.  All rights reserved.
   3  * Distributed under the terms of the MIT license.
   4  *
   5  * Authors:
   6  *              Gerald Zajac
   7  */
   8
   9 /*!
  10         Haiku Intel-810 video driver was adapted from the X.org intel driver which
  11         has the following copyright.
  12
  13         Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
  14         All Rights Reserved.
  15  */
  16
  17
  18 #include "accelerant.h"
  19 #include "i810_regs.h"
  20
  21
  22 bool
  23 I810_GetColorSpaceParams(int colorSpace, uint8& bitsPerPixel,
  24         uint32& maxPixelClock)
  25 {
  26         // Get parameters for a color space which is supported by the i810 chips.
  27         // Argument maxPixelClock is in KHz.
  28         // Return true if the color space is supported;  else return false.
  29
  30         switch (colorSpace) {
  31                 case B_RGB16:
  32                         bitsPerPixel = 16;
  33                         maxPixelClock = 163000;
  34                         break;
  35                         break;
  36                 case B_CMAP8:
  37                         bitsPerPixel = 8;
  38                         maxPixelClock = 203000;
  39                         break;
  40                 default:
  41                         TRACE("Unsupported color space: 0x%X\n", colorSpace);
  42                         return false;
  43         }
  44
  45         return true;
  46 }
  47
  48
  49 status_t
  50 I810_Init(void)
  51 {
  52         TRACE("I810_Init()\n");
  53
  54         SharedInfo& si = *gInfo.sharedInfo;
  55
  56         // Use all of video memory for the frame buffer.
  57
  58         si.maxFrameBufferSize = si.videoMemSize;
  59
  60         // Set up the array of the supported color spaces.
  61
  62         si.colorSpaces[0] = B_CMAP8;
  63         si.colorSpaces[1] = B_RGB16;
  64         si.colorSpaceCount = 2;
  65
  66         // Setup the mode list.
  67
  68         return CreateModeList(IsModeUsable);
  69 }