779 	u32 pch_ctl1, pch_ctl2;  in bdw_enable_backlight()  local
781 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in bdw_enable_backlight()
782 	if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {  in bdw_enable_backlight()
784 		pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;  in bdw_enable_backlight()
785 		I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in bdw_enable_backlight()
791 	pch_ctl1 = 0;  in bdw_enable_backlight()
793 		pch_ctl1 |= BLM_PCH_POLARITY;  in bdw_enable_backlight()
797 		pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE;  in bdw_enable_backlight()
799 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in bdw_enable_backlight()
801 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);  in bdw_enable_backlight()
815 	u32 cpu_ctl2, pch_ctl1, pch_ctl2;  in pch_enable_backlight()  local
824 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in pch_enable_backlight()
825 	if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {  in pch_enable_backlight()
827 		pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;  in pch_enable_backlight()
828 		I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in pch_enable_backlight()
845 	pch_ctl1 = 0;  in pch_enable_backlight()
847 		pch_ctl1 |= BLM_PCH_POLARITY;  in pch_enable_backlight()
849 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);  in pch_enable_backlight()
851 	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);  in pch_enable_backlight()
1158 	u32 pch_ctl1, pch_ctl2, val;  in bdw_setup_backlight()  local
1160 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in bdw_setup_backlight()
1161 	panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;  in bdw_setup_backlight()
1173 	panel->backlight.enabled = (pch_ctl1 & BLM_PCH_PWM_ENABLE) &&  in bdw_setup_backlight()
1184 	u32 cpu_ctl2, pch_ctl1, pch_ctl2, val;  in pch_setup_backlight()  local
1186 	pch_ctl1 = I915_READ(BLC_PWM_PCH_CTL1);  in pch_setup_backlight()
1187 	panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY;  in pch_setup_backlight()
1201 		(pch_ctl1 & BLM_PCH_PWM_ENABLE) && panel->backlight.level != 0;  in pch_setup_backlight()