HDSPM_InputSelect0
return (hdspm->control_register & HDSPM_InputSelect0) ? 1 : 0;
hdspm->control_register |= HDSPM_InputSelect0;
hdspm->control_register &= ~HDSPM_InputSelect0;
#define HDSPM_InputMask (HDSPM_InputSelect0|HDSPM_InputSelect1)
#define HDSPM_InputCoaxial (HDSPM_InputSelect0)