BLM_PCH_PWM_ENABLE
I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
panel->backlight.enabled = pch_ctl1 & BLM_PCH_PWM_ENABLE;
(pch_ctl1 & BLM_PCH_PWM_ENABLE);
I915_WRITE(BLC_PWM_PCH_CTL1, tmp & ~BLM_PCH_PWM_ENABLE);
I915_WRITE(BLC_PWM_PCH_CTL1, tmp & ~BLM_PCH_PWM_ENABLE);
if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {
pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);
if (pch_ctl1 & BLM_PCH_PWM_ENABLE) {
pch_ctl1 &= ~BLM_PCH_PWM_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1 | BLM_PCH_PWM_ENABLE);