603 	u32 ctl, ctl2, freq;  in i965_enable_backlight()  local
605 	ctl2 = intel_de_read(i915, BLC_PWM_CTL2);  in i965_enable_backlight()
606 	if (ctl2 & BLM_PWM_ENABLE) {  in i965_enable_backlight()
609 		ctl2 &= ~BLM_PWM_ENABLE;  in i965_enable_backlight()
610 		intel_de_write(i915, BLC_PWM_CTL2, ctl2);  in i965_enable_backlight()
620 	ctl2 = BLM_PIPE(pipe);  in i965_enable_backlight()
622 		ctl2 |= BLM_COMBINATION_MODE;  in i965_enable_backlight()
624 		ctl2 |= BLM_POLARITY_I965;  in i965_enable_backlight()
625 	intel_de_write(i915, BLC_PWM_CTL2, ctl2);  in i965_enable_backlight()
627 	intel_de_write(i915, BLC_PWM_CTL2, ctl2 | BLM_PWM_ENABLE);  in i965_enable_backlight()
639 	u32 ctl, ctl2;  in vlv_enable_backlight()  local
641 	ctl2 = intel_de_read(i915, VLV_BLC_PWM_CTL2(pipe));  in vlv_enable_backlight()
642 	if (ctl2 & BLM_PWM_ENABLE) {  in vlv_enable_backlight()
645 		ctl2 &= ~BLM_PWM_ENABLE;  in vlv_enable_backlight()
646 		intel_de_write(i915, VLV_BLC_PWM_CTL2(pipe), ctl2);  in vlv_enable_backlight()
655 	ctl2 = 0;  in vlv_enable_backlight()
657 		ctl2 |= BLM_POLARITY_I965;  in vlv_enable_backlight()
658 	intel_de_write(i915, VLV_BLC_PWM_CTL2(pipe), ctl2);  in vlv_enable_backlight()
660 	intel_de_write(i915, VLV_BLC_PWM_CTL2(pipe), ctl2 | BLM_PWM_ENABLE);  in vlv_enable_backlight()
1347 	u32 ctl, ctl2;  in i965_setup_backlight()  local
1349 	ctl2 = intel_de_read(i915, BLC_PWM_CTL2);  in i965_setup_backlight()
1350 	panel->backlight.combination_mode = ctl2 & BLM_COMBINATION_MODE;  in i965_setup_backlight()
1351 	panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965;  in i965_setup_backlight()
1367 	panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE;  in i965_setup_backlight()
1380 	u32 ctl, ctl2;  in vlv_setup_backlight()  local
1385 	ctl2 = intel_de_read(i915, VLV_BLC_PWM_CTL2(pipe));  in vlv_setup_backlight()
1386 	panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965;  in vlv_setup_backlight()
1399 	panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE;  in vlv_setup_backlight()