/*edid attr*/
static ssize_t show_edid(struct device *dev, struct device_attribute *attr, char *buf)
{
return hdmitx_edid_dump(&hdmitx_device, buf, PAGE_SIZE);
}
int hdmitx_edid_parse(hdmitx_dev_t* hdmitx_device)
{
unsigned char CheckSum ;
unsigned char BlockCount ;
unsigned char* EDID_buf = hdmitx_device->EDID_buf;
int i, j, ret_val ;
hdmi_print(0, "EDID Parser:\n");
ret_val = Edid_DecodeHeader(&hdmitx_device->hdmi_info, &EDID_buf[0]);
// if(ret_val == -1)
// return -1;
for( i = 0, CheckSum = 0 ; i < 128 ; i++ )
{
CheckSum += EDID_buf[i] ;
CheckSum &= 0xFF ;
}
if( CheckSum != 0 )
{
hdmitx_device->hdmi_info.output_state = CABLE_PLUGIN_DVI_OUT;
hdmi_print(0, "PLUGIN_DVI_OUT\n");
// return -1 ;
}
Edid_DecodeStandardTiming(&hdmitx_device->hdmi_info, &EDID_buf[26], 8);
Edid_ParseCEADetailedTimingDescriptors(&hdmitx_device->hdmi_info, 4, 0x36, &EDID_buf[0]);
BlockCount = EDID_buf[0x7E] ;
if( BlockCount == 0 ){
hdmitx_device->hdmi_info.output_state = CABLE_PLUGIN_DVI_OUT;
hdmi_print(0, "EDID BlockCount=0\n");
return 0 ; // do nothing.
}
else if ( BlockCount > EDID_MAX_BLOCK )
{
BlockCount = EDID_MAX_BLOCK ;
}
for( i = 1 ; i <= BlockCount ; i++ )
{
if((BlockCount > 1) && (i == 1))
{
CheckSum = 0; //ignore the block1 data
}
else
{
if(((BlockCount == 1) && (i == 1)) || ((BlockCount > 1) && (i == 2)))
Edid_Parse_check_HDMI_VSDB( &hdmitx_device->hdmi_info, &EDID_buf[i * 128]);
for( j = 0, CheckSum = 0 ; j < 128 ; j++ )
{
CheckSum += EDID_buf[i*128 + j] ;
CheckSum &= 0xFF ;
}
if( CheckSum != 0 )
{
hdmitx_device->hdmi_info.output_state = CABLE_PLUGIN_DVI_OUT;
}
else
{
Edid_MonitorCapable861(&hdmitx_device->hdmi_info, EDID_buf[i * 128 + 3]);
ret_val = Edid_ParsingCEADataBlockCollection(&hdmitx_device->hdmi_info, &EDID_buf[i * 128]);
Edid_ParseCEADetailedTimingDescriptors(&hdmitx_device->hdmi_info, 5, EDID_buf[i * 128 + 2], &EDID_buf[i * 128]);
if(hdmitx_device->hdmi_info.output_state != CABLE_PLUGIN_DVI_OUT)
hdmitx_device->hdmi_info.output_state = CABLE_PLUGIN_HDMI_OUT;
}
}
if( EDID_buf[i*128+0] == 0x2 )
{
if(hdmitx_edid_block_parse(hdmitx_device, &(EDID_buf[i*128]))>=0){
if(hdmitx_device->RXCap.IEEEOUI==0x0c03){
break;
}
}
}
}
#if 1
i=hdmitx_edid_dump(hdmitx_device, hdmitx_device->tmp_buf, HDMI_TMP_BUF_SIZE);
hdmitx_device->tmp_buf[i]=0;
hdmi_print_buf(hdmitx_device->tmp_buf, strlen(hdmitx_device->tmp_buf));
hdmi_print(0,"\n");
#endif
return 0;
}
