status_t
radeon_set_display_mode(display_mode *mode)
{
    uint32 display_id = 0;

    CardFBSet(mode);
    CardModeSet(mode);
    CardModeScale(mode);

    // If this is DAC, set our PLL
    if ((gDisplay[display_id]->connection_type & CONNECTION_DAC) != 0) {
        PLLSet(gDisplay[display_id]->connection_id, mode->timing.pixel_clock);
        DACSet(gDisplay[display_id]->connection_id, display_id);

        // TODO : Shutdown unused PLL/DAC

        // Power up the output
        PLLPower(gDisplay[display_id]->connection_id, RHD_POWER_ON);
        DACPower(gDisplay[display_id]->connection_id, RHD_POWER_ON);
    }

    // Ensure screen isn't blanked
    CardBlankSet(display_id, false);

    int32 crtstatus = Read32(CRT, D1CRTC_STATUS);
    TRACE("CRT0 Status: 0x%X\n", crtstatus);
    crtstatus = Read32(CRT, D2CRTC_STATUS);
    TRACE("CRT1 Status: 0x%X\n", crtstatus);

    return B_OK;
}