/*
 * Copyright (c) 2005 ASPEED Technology Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the authors not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  The authors makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include "xf86.h"
#include "xf86_ansic.h"
#include "xf86_OSproc.h"
#include "xf86Resources.h"
#include "xf86RAC.h"
#include "xf86cmap.h"
#include "compiler.h"
#include "mibstore.h"
#include "vgaHW.h"
#include "mipointer.h"
#include "micmap.h"

#include "fb.h"
#include "regionstr.h"
#include "xf86xv.h"
#include "Xv.h"
#include "vbe.h"

#include "xf86PciInfo.h"
#include "xf86Pci.h"

/* framebuffer offscreen manager */
#include "xf86fbman.h"

/* include xaa includes */
#include "xaa.h"
#include "xaarop.h"

/* H/W cursor support */
#include "xf86Cursor.h"

/* Driver specific headers */
#include "ast.h"

/* Prototype type declaration*/
void vASTOpenKey(ScrnInfoPtr pScrn);
Bool bASTRegInit(ScrnInfoPtr pScrn);
ULONG GetVRAMInfo(ScrnInfoPtr pScrn);
void vAST1000DisplayOn(ASTRecPtr pAST);
void vAST1000DisplayOff(ASTRecPtr pAST);
void vSetStartAddressCRT1(ASTRecPtr pAST, ULONG base);
void vASTLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices, LOCO *colors, VisualPtr pVisual);
void ASTDisplayPowerManagementSet(ScrnInfoPtr pScrn, int PowerManagementMode, int flags);

void
vASTOpenKey(ScrnInfoPtr pScrn)
{   	
   ASTRecPtr pAST = ASTPTR(pScrn);
   
   SetIndexReg(CRTC_PORT,0x80, 0xA8);     
   
}

Bool
bASTRegInit(ScrnInfoPtr pScrn)
{
   ASTRecPtr pAST = ASTPTR(pScrn);

   /* Enable MMIO */
   SetIndexRegMask(CRTC_PORT,0xA1, 0xFF, 0x04);

   return (TRUE);
   	
}

ULONG
GetVRAMInfo(ScrnInfoPtr pScrn)
{
   ASTRecPtr pAST = ASTPTR(pScrn);
   UCHAR jReg;

   GetIndexRegMask(CRTC_PORT, 0xAA, 0xFF, jReg);  

   switch (jReg & 0x03)
   {
   case 0x00:
       return (VIDEOMEM_SIZE_08M);           
   case 0x01:
       return (VIDEOMEM_SIZE_16M);                  
   case 0x02:
       return (VIDEOMEM_SIZE_32M);                 
   case 0x03:	
       return (VIDEOMEM_SIZE_64M); 
   }                     
 
   return (DEFAULT_VIDEOMEM_SIZE);
   	
}


void
vSetStartAddressCRT1(ASTRecPtr pAST, ULONG base)
{
    SetIndexReg(CRTC_PORT,0x0D, (UCHAR) (base & 0xFF));
    SetIndexReg(CRTC_PORT,0x0C, (UCHAR) ((base >> 8) & 0xFF));
    SetIndexReg(CRTC_PORT,0xAF, (UCHAR) ((base >> 16) & 0xFF));
    	
}

void
vAST1000DisplayOff(ASTRecPtr pAST)
{
    SetIndexRegMask(SEQ_PORT,0x01, 0xDF, 0x20);
	    
}


void
vAST1000DisplayOn(ASTRecPtr pAST)
{
	
    SetIndexRegMask(SEQ_PORT,0x01, 0xDF, 0x00);	
    
}	


void
vASTLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices, LOCO *colors,
               VisualPtr pVisual)
{
	
    ASTRecPtr  pAST = ASTPTR(pScrn);
    int     i, j, index;
    UCHAR DACIndex, DACR, DACG, DACB;
  
    switch (pScrn->bitsPerPixel) {
    case 15:
        for(i=0; i<numColors; i++) {
            index = indices[i];
	    for(j=0; j<8; j++) {
                DACIndex = (index * 8) + j;
                DACR = colors[index].red << (8- pScrn->rgbBits);
                DACG = colors[index].green << (8- pScrn->rgbBits);
                DACB = colors[index].blue << (8- pScrn->rgbBits);
                         
                VGA_LOAD_PALETTE_INDEX (DACIndex, DACR, DACG, DACB);                         
	    }
        }
        break;
        
    case 16:
        for(i=0; i<numColors; i++) {
            index = indices[i];
	    for(j=0; j<4; j++) {
                DACIndex = (index * 4) + j;
                DACR = colors[index/2].red << (8- pScrn->rgbBits);
                DACG = colors[index].green << (8- pScrn->rgbBits);
                DACB = colors[index/2].blue << (8- pScrn->rgbBits);
                         
                VGA_LOAD_PALETTE_INDEX (DACIndex, DACR, DACG, DACB);                         
	    }
        }
        break;
        
    case 24:
        for(i=0; i<numColors; i++) {
            index = indices[i];
            DACIndex = index;
            DACR = colors[index].red;
            DACG = colors[index].green;
            DACB = colors[index].blue;
                         
            VGA_LOAD_PALETTE_INDEX (DACIndex, DACR, DACG, DACB);                         
        }    
        break;
        
    default:
        for(i=0; i<numColors; i++) {
            index = indices[i];
            DACIndex = index;
            DACR = colors[index].red >> (8 - pScrn->rgbBits);
            DACG = colors[index].green >> (8 - pScrn->rgbBits);
            DACB = colors[index].blue >> (8 - pScrn->rgbBits);
                         
            VGA_LOAD_PALETTE_INDEX (DACIndex, DACR, DACG, DACB);                         
        }    

    } /* end of switch */
    
} /* end of vASTLoadPalette */

void
ASTDisplayPowerManagementSet(ScrnInfoPtr pScrn, int PowerManagementMode, int flags)
{
   ASTRecPtr pAST;
   UCHAR SEQ01, CRB6;

   pAST = ASTPTR(pScrn);
   SEQ01=CRB6=0;
   
   switch (PowerManagementMode) {
   case DPMSModeOn:
      /* Screen: On; HSync: On, VSync: On */
      SEQ01 = 0x00;
      CRB6 = 0x00;
      break;
   case DPMSModeStandby:
      /* Screen: Off; HSync: Off, VSync: On */
      SEQ01 = 0x20;
      CRB6  = 0x01;     
      break;
   case DPMSModeSuspend:
      /* Screen: Off; HSync: On, VSync: Off */
      SEQ01 = 0x20;
      CRB6  = 0x02;           
      break;
   case DPMSModeOff:
      /* Screen: Off; HSync: Off, VSync: Off */
      SEQ01 = 0x20;
      CRB6  = 0x03;           
      break;
   }

   SetIndexRegMask(SEQ_PORT,0x01, 0xDF, SEQ01);
   SetIndexRegMask(CRTC_PORT,0xB6, 0xFC, CRB6);


}