/* read PCI config space and transfer it to MSR access.  */
u32 cs5536_pci_conf_read4(int function, int reg)
/* read PCI config space and transfer it to MSR access.  */
u32 cs5536_pci_conf_read4(int function, int reg)
{
	u32 data = 0;
	if ((function <= CS5536_FUNC_START) || (function >= CS5536_FUNC_END))
		return 0;
	if ((reg < 0) || ((reg & 0x03) != 0))
		return 0;
	if (reg > 0x100)
		return 0xffffffff;
	if (vsm_conf_read[function] != NULL)
		data = vsm_conf_read[function](reg);
	return data;
}