static int tmds_register_read(int index)
{
u8 data;
viafb_i2c_readbyte(viaparinfo->chip_info->tmds_chip_info.i2c_port,
(u8) viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr,
(u8) index, &data);
return data;
}
u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information
*plvds_setting_info, struct lvds_chip_information *plvds_chip_info,
u8 index)
{
u8 data;
viaparinfo->i2c_stuff.i2c_port = plvds_chip_info->i2c_port;
viafb_i2c_readbyte(plvds_chip_info->lvds_chip_slave_addr, index, &data);
return data;
}
bool viafb_lvds_identify_vt1636(void)
{
u8 Buffer[2];
DEBUG_MSG(KERN_INFO "viafb_lvds_identify_vt1636.\n");
/* Sense VT1636 LVDS Transmiter */
viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
VT1636_LVDS_I2C_ADDR;
/* Check vendor ID first: */
viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
lvds_chip_slave_addr,
0x00, &Buffer[0]);
viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
lvds_chip_slave_addr,
0x01, &Buffer[1]);
if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11)))
return false;
/* Check Chip ID: */
viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
lvds_chip_slave_addr,
0x02, &Buffer[0]);
viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
lvds_chip_slave_addr,
0x03, &Buffer[1]);
if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) {
viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
VT1636_LVDS;
return true;
}
return false;
}