[PATCH] drm/msm/dpu: update the qos remap only if the client type changes

[Abhinav Kumar]

Update the qos remap only if the client type changes for the plane.
This will avoid unnecessary register programming and also avoid log
spam from the dpu_vbif_set_qos_remap() function.

Signed-off-by: Abhinav Kumar <abhinavk at codeaurora.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c    | 17 +++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h    |  7 +++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c |  2 ++
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c   | 12 ++++++++++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h   |  5 +++++
 5 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index d4662e8184cc..3867da47c683 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1037,6 +1037,23 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
 	return rc;
 }
 
+void dpu_crtc_set_qos_dirty(struct drm_crtc *crtc)
+{
+	struct drm_plane *plane;
+	struct drm_plane_state *state;
+	struct dpu_plane_state *pstate;
+
+	drm_atomic_crtc_for_each_plane(plane, crtc) {
+		state = plane->state;
+		if (!state)
+			continue;
+
+		pstate = to_dpu_plane_state(state);
+
+		pstate->dirty |= DPU_PLANE_DIRTY_QOS;
+	}
+}
+
 int dpu_crtc_vblank(struct drm_crtc *crtc, bool en)
 {
 	struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
index cec3474340e8..8ba11de605bc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
@@ -231,6 +231,13 @@ static inline int dpu_crtc_frame_pending(struct drm_crtc *crtc)
  */
 int dpu_crtc_vblank(struct drm_crtc *crtc, bool en);
 
+/**
+ * dpu_crtc_set_qos_dirty - update plane dirty flag to include
+ * QoS reprogramming
+ * @crtc: Pointer to drm crtc structure
+ */
+void dpu_crtc_set_qos_dirty(struct drm_crtc *crtc);
+
 /**
  * dpu_crtc_vblank_callback - called on vblank irq, issues completion events
  * @crtc: Pointer to drm crtc object
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index f7f5c258b553..c2db9dd6ec67 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1001,6 +1001,8 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,
 
 	trace_dpu_enc_mode_set(DRMID(drm_enc));
 
+	dpu_crtc_set_qos_dirty(drm_enc->crtc);
+
 	if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp)
 		msm_dp_display_mode_set(priv->dp, drm_enc, mode, adj_mode);
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 7ea90d25a3b6..f91d31a31e14 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -1066,6 +1066,7 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
 	struct dpu_plane_state *pstate = to_dpu_plane_state(state);
 	struct drm_crtc *crtc = state->crtc;
 	struct drm_framebuffer *fb = state->fb;
+	bool is_rt_pipe;
 	const struct dpu_format *fmt =
 		to_dpu_format(msm_framebuffer_format(fb));
 
@@ -1075,7 +1076,7 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
 
 	pstate->pending = true;
 
-	pdpu->is_rt_pipe = (dpu_crtc_get_client_type(crtc) != NRT_CLIENT);
+	is_rt_pipe = (dpu_crtc_get_client_type(crtc) != NRT_CLIENT);
 	_dpu_plane_set_qos_ctrl(plane, false, DPU_PLANE_QOS_PANIC_CTRL);
 
 	DPU_DEBUG_PLANE(pdpu, "FB[%u] " DRM_RECT_FP_FMT "->crtc%u " DRM_RECT_FMT
@@ -1181,8 +1182,15 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
 		_dpu_plane_set_ot_limit(plane, crtc);
 	}
 
-	_dpu_plane_set_qos_remap(plane);
+	if (is_rt_pipe != pdpu->is_rt_pipe) {
+		pdpu->is_rt_pipe = is_rt_pipe;
+		pstate->dirty |= DPU_PLANE_DIRTY_QOS;
+	}
 
+	if (pstate->dirty & DPU_PLANE_DIRTY_QOS) {
+		_dpu_plane_set_qos_remap(plane);
+		pstate->dirty = 0x0;
+	}
 	_dpu_plane_calc_bw(plane, fb);
 
 	_dpu_plane_calc_clk(plane);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index ca83b8753d59..47abd3686a86 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -14,11 +14,15 @@
 #include "dpu_hw_mdss.h"
 #include "dpu_hw_sspp.h"
 
+/* dirty bits to update QOS */
+#define DPU_PLANE_DIRTY_QOS 0x1
+
 /**
  * struct dpu_plane_state: Define dpu extension of drm plane state object
  * @base:	base drm plane state object
  * @aspace:	pointer to address space for input/output buffers
  * @stage:	assigned by crtc blender
+ * @dirty:	bitmask for which pipe h/w config functions need to be updated
  * @multirect_index: index of the rectangle of SSPP
  * @multirect_mode: parallel or time multiplex multirect mode
  * @pending:	whether the current update is still pending
@@ -32,6 +36,7 @@ struct dpu_plane_state {
 	struct drm_plane_state base;
 	struct msm_gem_address_space *aspace;
 	enum dpu_stage stage;
+	uint32_t dirty;
 	uint32_t multirect_index;
 	uint32_t multirect_mode;
 	bool pending;
-- 
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