858 	u32 cpu_ctl2, pch_ctl1, pch_ctl2;  in pch_enable_backlight()  local
860 	cpu_ctl2 = I915_READ(BLC_PWM_CPU_CTL2);  in pch_enable_backlight()
861 	if (cpu_ctl2 & BLM_PWM_ENABLE) {  in pch_enable_backlight()
863 		cpu_ctl2 &= ~BLM_PWM_ENABLE;  in pch_enable_backlight()
864 		I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2);  in pch_enable_backlight()
875 		cpu_ctl2 = BLM_TRANSCODER_EDP;  in pch_enable_backlight()
877 		cpu_ctl2 = BLM_PIPE(cpu_transcoder);  in pch_enable_backlight()
878 	I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2);  in pch_enable_backlight()
880 	I915_WRITE(BLC_PWM_CPU_CTL2, cpu_ctl2 | BLM_PWM_ENABLE);  in pch_enable_backlight()
1524 	u32 cpu_ctl2, pch_ctl1, pch_ctl2, val;  in pch_setup_backlight()  local
1545 	cpu_ctl2 = I915_READ(BLC_PWM_CPU_CTL2);  in pch_setup_backlight()
1546 	panel->backlight.enabled = (cpu_ctl2 & BLM_PWM_ENABLE) &&  in pch_setup_backlight()