__s32 ParseEDID(void)
{
//collect the EDID ucdata of segment 0
__u8 BlockCount ;
__u32 i,offset ;
__inf("ParseEDID\n");
memset(Device_Support_VIC,0,sizeof(Device_Support_VIC));
memset(EDID_Buf,0,sizeof(EDID_Buf));
is_hdmi = 0;
is_yuv = 0;
is_exp = 0;
DDC_Init();
GetEDIDData(0, EDID_Buf);
if( EDID_CheckSum(0, EDID_Buf) != 0)
return 0;
if( EDID_Header_Check(EDID_Buf)!= 0)
return 0;
if( EDID_Version_Check(EDID_Buf)!= 0)
return 0;
Parse_DTD_Block(EDID_Buf + 0x36);
Parse_DTD_Block(EDID_Buf + 0x48);
BlockCount = EDID_Buf[0x7E];
if((Check_EDID(EDID_Buf,exp0) == 0)||
(Check_EDID(EDID_Buf,exp1) == 0))
{
printk("*****************is_exp*****************\n");
is_exp = 1;
}
if( BlockCount > 0 ) {
if ( BlockCount > 4 )
BlockCount = 4 ;
for( i = 1 ; i <= BlockCount ; i++ ) {
GetEDIDData(i, EDID_Buf) ;
if( EDID_CheckSum(i, EDID_Buf)!= 0)
return 0;
if((EDID_Buf[0x80*i+0]==2)/*&&(EDID_Buf[0x80*i+1]==1)*/)
{
if( (EDID_Buf[0x80*i+1]>=1)) {
if(EDID_Buf[0x80*i+3]&0x20)
{
is_yuv = 1;
__inf("device support YCbCr44 output\n");
if(rgb_only == 1) {
__inf("rgb only test!\n");
is_yuv = 0;
}
}
}
offset = EDID_Buf[0x80*i+2];
/* deal with reserved data block */
if(offset > 4) {
__u8 bsum = 4;
while(bsum < offset)
{
__u8 tag = EDID_Buf[0x80*i+bsum]>>5;
__u8 len = EDID_Buf[0x80*i+bsum]&0x1f;
if( (len >0) && ((bsum + len + 1) > offset) ) {
__inf("len or bsum size error\n");
return 0;
} else {
if( tag == 1) {
/* ADB */
Parse_AudioData_Block(EDID_Buf+0x80*i+bsum+1,len);
} else if( tag == 2) {
/* VDB */
Parse_VideoData_Block(EDID_Buf+0x80*i+bsum+1,len);
} else if( tag == 3) {
/* vendor specific */
Parse_HDMI_VSDB(EDID_Buf+0x80*i+bsum+1,len);
}
}
bsum += (len +1);
}
} else {
__inf("no data in reserved block%d\n",i);
}
/* deal with 18-byte timing block */
if(offset >= 4) {
while(offset < (0x80-18)) {
Parse_DTD_Block(EDID_Buf + 0x80*i + offset);
offset += 18;
}
} else {
__inf("no datail timing in block%d\n",i);
}
}
}
__s32 ParseEDID(void)
{
//collect the EDID ucdata of segment 0
__u8 BlockCount ;
__u32 i,offset ;
__inf("ParseEDID\n");
memset(Device_Support_VIC,0,sizeof(Device_Support_VIC));
memset(EDID_Buf,0,sizeof(EDID_Buf));
DDC_Init();
GetEDIDData(0, EDID_Buf);
if( EDID_CheckSum(0, EDID_Buf) != 0)
{
return 0;
}
if( EDID_Header_Check(EDID_Buf)!= 0)
{
return 0;
}
if( EDID_Version_Check(EDID_Buf)!= 0)
{
return 0;
}
Parse_DTD_Block(EDID_Buf + 0x36);
Parse_DTD_Block(EDID_Buf + 0x48);
BlockCount = EDID_Buf[0x7E];
if( BlockCount > 0 )
{
if ( BlockCount > 4 )
{
BlockCount = 4 ;
}
for( i = 1 ; i <= BlockCount ; i++ )
{
GetEDIDData(i, EDID_Buf) ;
if( EDID_CheckSum(i, EDID_Buf)!= 0)
{
return 0;
}
if((EDID_Buf[0x80*i+0]==2)/*&&(EDID_Buf[0x80*i+1]==1)*/)
{
offset = EDID_Buf[0x80*i+2];
if(offset > 4) //deal with reserved data block
{
__u8 bsum = 4;
while(bsum < offset)
{
__u8 tag = EDID_Buf[0x80*i+bsum]>>5;
__u8 len = EDID_Buf[0x80*i+bsum]&0x1f;
if( (len >0) && ((bsum + len + 1) > offset) )
{
__inf("len or bsum size error\n");
return 0;
}else
{
if( tag == 1) //ADB
{
Parse_AudioData_Block(EDID_Buf+0x80*i+bsum+1,len);
}
else if( tag == 2) //VDB
{
Parse_VideoData_Block(EDID_Buf+0x80*i+bsum+1,len);
}
else if( tag == 3) //vendor specific
{
Parse_HDMI_VSDB(EDID_Buf+0x80*i+bsum+1,len);
}
}
bsum += (len +1);
}
}else
{
__inf("no data in reserved block%d\n",i);
}
if(offset >= 4) //deal with 18-byte timing block
{
while(offset < (0x80-18))
{
Parse_DTD_Block(EDID_Buf + 0x80*i + offset);
offset += 18;
}
}else
{
__inf("no datail timing in block%d\n",i);
}
}
