From 8807e55b3a1bf7b159dcefa4504e204df364d4a1 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 30 Aug 2013 19:40:32 +0300 Subject: [PATCH] drm/i915: do display power state notification on crtc enable/disable The spec says to notify prior to power down and after power up. It is unclear whether it makes a difference. Signed-off-by: Jani Nikula Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e16b997bfd0b..24c3937999de 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3427,8 +3427,10 @@ static void haswell_crtc_enable(struct drm_crtc *crtc) intel_update_fbc(dev); mutex_unlock(&dev->struct_mutex); - for_each_encoder_on_crtc(dev, crtc, encoder) + for_each_encoder_on_crtc(dev, crtc, encoder) { encoder->enable(encoder); + intel_opregion_notify_encoder(encoder, true); + } /* * There seems to be a race in PCH platform hw (at least on some @@ -3542,8 +3544,10 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) if (!intel_crtc->active) return; - for_each_encoder_on_crtc(dev, crtc, encoder) + for_each_encoder_on_crtc(dev, crtc, encoder) { + intel_opregion_notify_encoder(encoder, false); encoder->disable(encoder); + } intel_crtc_wait_for_pending_flips(crtc); drm_vblank_off(dev, pipe); -- 2.20.1