[Intel-gfx] [PATCH v3 7/9] drm/i915/display/vrr: Disable VRR in modeset disable path

[Manasi Navare]

This patch disables the VRR enable and VRR PUSH
bits in the HW during commit modeset disable sequence.

Thsi disable will happen when the port is disabled
or when the userspace sets VRR prop to false and
requests to disable VRR.

v2:
* Use intel_de_rmw (Jani N)

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c |  2 ++
 drivers/gpu/drm/i915/display/intel_vrr.c | 16 ++++++++++++++++
 drivers/gpu/drm/i915/display/intel_vrr.h |  1 +
 3 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 48467c6abb37..07fb7296c8c7 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3995,6 +3995,8 @@ static void intel_ddi_post_disable(struct intel_atomic_state *state,
 
 		intel_disable_pipe(old_crtc_state);
 
+		intel_vrr_disable(old_crtc_state);
+
 		intel_ddi_disable_transcoder_func(old_crtc_state);
 
 		intel_dsc_disable(old_crtc_state);
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 3597a53887dd..a3edfadb50f1 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -133,3 +133,19 @@ void intel_vrr_send_push(const struct intel_crtc_state *crtc_state)
 	drm_dbg_kms(&dev_priv->drm, "Sending VRR Push on pipe %c\n",
 		    pipe_name(pipe));
 }
+
+void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (!old_crtc_state->vrr.enable)
+		return;
+
+	intel_de_rmw(dev_priv, TRANS_VRR_CTL(pipe), VRR_CTL_FLIP_LINE_EN | VRR_CTL_VRR_ENABLE, 0);
+	intel_de_rmw(dev_priv, TRANS_PUSH(pipe), TRANS_PUSH_EN, 0);
+
+	drm_dbg_kms(&dev_priv->drm, "Disabling VRR on pipe %c\n",
+		    pipe_name(pipe));
+}
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index 112e40147e35..5d3def024006 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -22,5 +22,6 @@ void intel_vrr_compute_config(struct intel_dp *intel_dp,
 void intel_vrr_enable(struct intel_encoder *encoder,
 		      const struct intel_crtc_state *crtc_state);
 void intel_vrr_send_push(const struct intel_crtc_state *crtc_state);
+void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
 
 #endif /* __INTEL_VRR_H__ */
-- 
2.19.1