[Intel-gfx] [PATCH v4 10/18] drm/i915/display/vrr: Configure and enable VRR in modeset enable

From: Manasi Navare <manasi.d.navare@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v4 10/18] drm/i915/display/vrr: Configure and enable VRR in modeset enable
Date: Wed, 13 Jan 2021 14:09:27 -0800	[thread overview]
Message-ID: <20210113220935.4151-11-manasi.d.navare@intel.com> (raw)
In-Reply-To: <20210113220935.4151-1-manasi.d.navare@intel.com>

This patch computes the VRR parameters from VRR crtc states
and configures them in VRR registers during CRTC enable in
the modeset enable sequence.

v2:
* Remove initialization to 0 (Jani N)
* Use correct pipe %c (Jani N)

v3:
* Remove debug prints (Ville)
* Use cpu_trans instead of pipe for TRANS_VRR regs (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c |  3 +++
 drivers/gpu/drm/i915/display/intel_vrr.c | 21 +++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_vrr.h |  3 +++
 3 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 49cf76a9b4c6..b442f06e9800 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -50,6 +50,7 @@
 #include "intel_sprite.h"
 #include "intel_tc.h"
 #include "intel_vdsc.h"
+#include "intel_vrr.h"
 
 struct ddi_buf_trans {
 	u32 trans1;	/* balance leg enable, de-emph level */
@@ -4313,6 +4314,8 @@ static void intel_enable_ddi(struct intel_atomic_state *state,
 	if (!crtc_state->bigjoiner_slave)
 		intel_ddi_enable_transcoder_func(encoder, crtc_state);
 
+	intel_vrr_enable(encoder, crtc_state);
+
 	intel_enable_pipe(crtc_state);
 
 	intel_crtc_vblank_on(crtc_state);
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 466663be90f5..e7fb297e8d23 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -100,3 +100,24 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 		min(255, crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay - 4 - 1);
 }
 
+void intel_vrr_enable(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	u32 trans_vrr_ctl;
+
+	if (!crtc_state->vrr.enable)
+		return;
+
+	trans_vrr_ctl = VRR_CTL_VRR_ENABLE |
+		VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN |
+		VRR_CTL_PIPELINE_FULL(crtc_state->vrr.pipeline_full) |
+		VRR_CTL_PIPELINE_FULL_OVERRIDE;
+
+	intel_de_write(dev_priv, TRANS_VRR_VMIN(cpu_transcoder), crtc_state->vrr.vmin - 1);
+	intel_de_write(dev_priv, TRANS_VRR_VMAX(cpu_transcoder), crtc_state->vrr.vmax - 1);
+	intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), trans_vrr_ctl);
+	intel_de_write(dev_priv, TRANS_VRR_FLIPLINE(cpu_transcoder), crtc_state->vrr.flipline - 1);
+	intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), TRANS_PUSH_EN);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index 67c477d6d1a4..80c33fbd0639 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -14,10 +14,13 @@ struct intel_atomic_state;
 struct intel_crtc;
 struct intel_crtc_state;
 struct intel_dp;
+struct intel_encoder;
 
 bool intel_vrr_is_capable(struct drm_connector *connector);
 void intel_vrr_check_modeset(struct intel_atomic_state *state);
 void intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
 			      struct drm_connector_state *conn_state);
+void intel_vrr_enable(struct intel_encoder *encoder,
+		      const struct intel_crtc_state *crtc_state);
 
 #endif /* __INTEL_VRR_H__ */
-- 
2.19.1

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