HDSPM_QuadSpeed
if (hdspm->control_register & HDSPM_QuadSpeed)
if (hdspm->control_register & HDSPM_QuadSpeed)
hdspm->control_register &= ~(HDSPM_DoubleSpeed | HDSPM_QuadSpeed);
hdspm->control_register |= HDSPM_QuadSpeed;
HDSPM_DoubleSpeed|HDSPM_QuadSpeed)
#define HDSPM_Frequency128KHz (HDSPM_QuadSpeed|HDSPM_Frequency0)
#define HDSPM_Frequency176_4KHz (HDSPM_QuadSpeed|HDSPM_Frequency1)
#define HDSPM_Frequency192KHz (HDSPM_QuadSpeed|HDSPM_Frequency1|\
if (control & HDSPM_QuadSpeed) {