SOUTH_CHICKEN2
tmp = I915_READ(SOUTH_CHICKEN2);
I915_WRITE(SOUTH_CHICKEN2, tmp);
if (wait_for_us(I915_READ(SOUTH_CHICKEN2) &
tmp = I915_READ(SOUTH_CHICKEN2);
I915_WRITE(SOUTH_CHICKEN2, tmp);
if (wait_for_us((I915_READ(SOUTH_CHICKEN2) &
alt = I915_READ(SOUTH_CHICKEN2) & LPT_PWM_GRANULARITY;
schicken = I915_READ(SOUTH_CHICKEN2);
I915_WRITE(SOUTH_CHICKEN2, schicken);
I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |