[Intel-gfx] [PATCH 8/8] drm/i915: Hook PSR functionality

[Rodrigo Vivi]

PSR must be enabled after transcoder and port are running.
And it is only available for HSW.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
---
 drivers/gpu/drm/i915/intel_display.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1464e47..7e1469a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3431,8 +3431,13 @@ static void haswell_crtc_enable(struct drm_crtc *crtc)
 
 	intel_crtc_update_cursor(crtc, true);
 
-	for_each_encoder_on_crtc(dev, crtc, encoder)
+	for_each_encoder_on_crtc(dev, crtc, encoder) {
 		encoder->enable(encoder);
+		if (encoder->type == INTEL_OUTPUT_EDP) {
+			struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+			intel_edp_enable_psr(intel_dp);
+		}
+	}
 
 	/*
 	 * There seems to be a race in PCH platform hw (at least on some
@@ -3459,8 +3464,14 @@ static void ironlake_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) {
+		if (encoder->type == INTEL_OUTPUT_EDP) {
+			struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+			intel_edp_disable_psr(intel_dp);
+		}
 		encoder->disable(encoder);
+	}
+
 
 	intel_crtc_wait_for_pending_flips(crtc);
 	drm_vblank_off(dev, pipe);
-- 
1.7.11.7