BLC_PWM_PCH_CTL2
pch_ctl2 = intel_de_read(display, BLC_PWM_PCH_CTL2);
pch_ctl2 = intel_de_read(display, BLC_PWM_PCH_CTL2);
return intel_de_read(display, BLC_PWM_PCH_CTL2) & BACKLIGHT_DUTY_CYCLE_MASK;
val = intel_de_read(display, BLC_PWM_PCH_CTL2) & ~BACKLIGHT_DUTY_CYCLE_MASK;
intel_de_write(display, BLC_PWM_PCH_CTL2, val | level);
intel_de_write(display, BLC_PWM_PCH_CTL2, pch_ctl2);
intel_de_write(display, BLC_PWM_PCH_CTL2, pch_ctl2);
MMIO_D(BLC_PWM_PCH_CTL2);