807 	u32 pch_ctl1, pch_ctl2, schicken;  in lpt_enable_backlight()  local
809 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in lpt_enable_backlight()
810 	if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {  in lpt_enable_backlight()
812 		pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;  in lpt_enable_backlight()
813 		I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in lpt_enable_backlight()
835 	pch_ctl1 = 0;  in lpt_enable_backlight()
837 		pch_ctl1 |= BLM_PCH_POLARITY;  in lpt_enable_backlight()
841 		pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE;  in lpt_enable_backlight()
843 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in lpt_enable_backlight()
845 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);  in lpt_enable_backlight()
858 	u32 cpu_ctl2, pch_ctl1, pch_ctl2;  in pch_enable_backlight()  local
867 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in pch_enable_backlight()
868 	if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {  in pch_enable_backlight()
870 		pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;  in pch_enable_backlight()
871 		I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in pch_enable_backlight()
888 	pch_ctl1 = 0;  in pch_enable_backlight()
890 		pch_ctl1 |= BLM_PCH_POLARITY;  in pch_enable_backlight()
892 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in pch_enable_backlight()
894 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);  in pch_enable_backlight()
1487 	u32 pch_ctl1, pch_ctl2, val;  in lpt_setup_backlight()  local
1496 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in lpt_setup_backlight()
1497 	panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;  in lpt_setup_backlight()
1515 	panel->backlight.enabled = pch_ctl1 & BLM_PCH_PWM_ENABLE;  in lpt_setup_backlight()
1524 	u32 cpu_ctl2, pch_ctl1, pch_ctl2, val;  in pch_setup_backlight()  local
1526 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in pch_setup_backlight()
1527 	panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;  in pch_setup_backlight()
1547 		(pch_ctl1 & BLM_PCH_PWM_ENABLE);  in pch_setup_backlight()