[PATCH v2] drm/msm/dpu: update the qos remap only if the client type changes

[Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>]

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.

changes in v2:
 - get rid of the dirty flag and simplify the logic to call
   _dpu_plane_set_qos_remap()

Signed-off-by: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 17 +++++++++++++++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h |  2 ++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 7ea90d25a3b6..8f9e9293969e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -937,6 +937,7 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 {
 	int ret = 0, min_scale;
 	struct dpu_plane *pdpu = to_dpu_plane(plane);
+	struct dpu_plane_state *pstate = to_dpu_plane_state(state);
 	const struct drm_crtc_state *crtc_state = NULL;
 	const struct dpu_format *fmt;
 	struct drm_rect src, dst, fb_rect = { 0 };
@@ -1009,6 +1010,8 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 		return -E2BIG;
 	}
 
+	pstate->needs_qos_remap = drm_atomic_crtc_needs_modeset(crtc_state);
+
 	return 0;
 }
 
@@ -1066,6 +1069,7 @@ 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, update_qos_remap;
 	const struct dpu_format *fmt =
 		to_dpu_format(msm_framebuffer_format(fb));
 
@@ -1075,7 +1079,7 @@ 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
@@ -1181,7 +1185,16 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
 		_dpu_plane_set_ot_limit(plane, crtc);
 	}
 
-	_dpu_plane_set_qos_remap(plane);
+	update_qos_remap = (is_rt_pipe != pdpu->is_rt_pipe) ||
+			pstate->needs_qos_remap;
+
+	if (update_qos_remap) {
+		if (is_rt_pipe != pdpu->is_rt_pipe)
+			pdpu->is_rt_pipe = is_rt_pipe;
+		else if (pstate->needs_qos_remap)
+			pstate->needs_qos_remap = false;
+		_dpu_plane_set_qos_remap(plane);
+	}
 
 	_dpu_plane_calc_bw(plane, fb);
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index ca83b8753d59..13a983fa8213 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -19,6 +19,7 @@
  * @base:	base drm plane state object
  * @aspace:	pointer to address space for input/output buffers
  * @stage:	assigned by crtc blender
+ * @needs_qos_remap: qos remap settings 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 +33,7 @@ struct dpu_plane_state {
 	struct drm_plane_state base;
 	struct msm_gem_address_space *aspace;
 	enum dpu_stage stage;
+	bool needs_qos_remap;
 	uint32_t multirect_index;
 	uint32_t multirect_mode;
 	bool pending;
-- 
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a Linux Foundation Collaborative Project

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