drm/msm/dpu: simplify qos_ctrl handling

After removal of DPU_PLANE_QOS_VBLANK_CTRL, several fields of struct
dpu_hw_pipe_qos_cfg are fixed to false/0. Drop them from the structure
(and drop the corresponding code from the functions).

The DPU_PLANE_QOS_VBLANK_AMORTIZE flag is also removed, since it is now
a NOP.
Reviewed-by: Jeykumar Sankaran <quic_jeykumar@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/537909/
Link: https://lore.kernel.org/r/20230518222238.3815293-7-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c

@@ -573,16 +573,6 @@ static void dpu_hw_sspp_setup_qos_ctrl(struct dpu_hw_sspp *ctx,
 	if (!ctx)
 		return;
 
-	if (cfg->vblank_en) {
-		qos_ctrl |= ((cfg->creq_vblank &
-				SSPP_QOS_CTRL_CREQ_VBLANK_MASK) <<
-				SSPP_QOS_CTRL_CREQ_VBLANK_OFF);
-		qos_ctrl |= ((cfg->danger_vblank &
-				SSPP_QOS_CTRL_DANGER_VBLANK_MASK) <<
-				SSPP_QOS_CTRL_DANGER_VBLANK_OFF);
-		qos_ctrl |= SSPP_QOS_CTRL_VBLANK_EN;
-	}
-
 	if (cfg->danger_safe_en)
 		qos_ctrl |= SSPP_QOS_CTRL_DANGER_SAFE_EN;
 

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h

@@ -165,15 +165,9 @@ struct dpu_sw_pipe_cfg {
 
 /**
  * struct dpu_hw_pipe_qos_cfg : Source pipe QoS configuration
- * @creq_vblank: creq value generated to vbif during vertical blanking
- * @danger_vblank: danger value generated during vertical blanking
- * @vblank_en: enable creq_vblank and danger_vblank during vblank
  * @danger_safe_en: enable danger safe generation
  */
 struct dpu_hw_pipe_qos_cfg {
-	u32 creq_vblank;
-	u32 danger_vblank;
-	bool vblank_en;
 	bool danger_safe_en;
 };
 

drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c

@@ -73,12 +73,9 @@ static const uint32_t qcom_compressed_supported_formats[] = {
 /**
  * enum dpu_plane_qos - Different qos configurations for each pipe
  *
- * @DPU_PLANE_QOS_VBLANK_AMORTIZE: Enables Amortization within pipe.
- *	this configuration is mutually exclusive from VBLANK_CTRL.
  * @DPU_PLANE_QOS_PANIC_CTRL: Setup panic for the pipe.
  */
 enum dpu_plane_qos {
-	DPU_PLANE_QOS_VBLANK_AMORTIZE = BIT(1),
 	DPU_PLANE_QOS_PANIC_CTRL = BIT(2),
 };
 
@@ -359,25 +356,15 @@ static void _dpu_plane_set_qos_ctrl(struct drm_plane *plane,
 
 	memset(&pipe_qos_cfg, 0, sizeof(pipe_qos_cfg));
 
-	if (flags & DPU_PLANE_QOS_VBLANK_AMORTIZE) {
-		pipe_qos_cfg.vblank_en = false;
-		pipe_qos_cfg.creq_vblank = 0; /* clear vblank bits */
-	}
-
 	if (flags & DPU_PLANE_QOS_PANIC_CTRL)
 		pipe_qos_cfg.danger_safe_en = enable;
 
-	if (!pdpu->is_rt_pipe) {
-		pipe_qos_cfg.vblank_en = false;
+	if (!pdpu->is_rt_pipe)
 		pipe_qos_cfg.danger_safe_en = false;
-	}
 
-	DPU_DEBUG_PLANE(pdpu, "pnum:%d ds:%d vb:%d pri[0x%x, 0x%x] is_rt:%d\n",
+	DPU_DEBUG_PLANE(pdpu, "pnum:%d ds:%d is_rt:%d\n",
 		pdpu->pipe - SSPP_VIG0,
 		pipe_qos_cfg.danger_safe_en,
-		pipe_qos_cfg.vblank_en,
-		pipe_qos_cfg.creq_vblank,
-		pipe_qos_cfg.danger_vblank,
 		pdpu->is_rt_pipe);
 
 	pipe->sspp->ops.setup_qos_ctrl(pipe->sspp,