Re: [Freedreno] [PATCH v2 9/9] drm/msm/dpu: use common helper for WB and SSPP QoS setup

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On 5/2/2023 8:05 AM, Dmitry Baryshkov wrote:
Rework SSPP and WB code to use common helper for programming QoS
settings.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
  .../drm/msm/disp/dpu1/dpu_encoder_phys_wb.c   |  4 +-
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c   | 31 ++-----
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h   | 19 +----
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.c   | 31 +++++++
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h   | 21 +++++
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c     | 29 +------
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h     | 16 +---
  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c     | 85 +++++++------------
  8 files changed, 100 insertions(+), 136 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
index e7b65f6f53d6..023a9c4ad1db 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
@@ -102,7 +102,7 @@ static void dpu_encoder_phys_wb_set_qos_remap(
  static void dpu_encoder_phys_wb_set_qos(struct dpu_encoder_phys *phys_enc)
  {
  	struct dpu_hw_wb *hw_wb;
-	struct dpu_hw_wb_qos_cfg qos_cfg;
+	struct dpu_hw_qos_cfg qos_cfg;
  	const struct dpu_mdss_cfg *catalog;
  	const struct dpu_qos_lut_tbl *qos_lut_tb;
@@ -115,7 +115,7 @@ static void dpu_encoder_phys_wb_set_qos(struct dpu_encoder_phys *phys_enc) hw_wb = phys_enc->hw_wb; - memset(&qos_cfg, 0, sizeof(struct dpu_hw_wb_qos_cfg));
+	memset(&qos_cfg, 0, sizeof(struct dpu_hw_qos_cfg));
  	qos_cfg.danger_safe_en = true;
  	qos_cfg.danger_lut =
  		catalog->perf->danger_lut_tbl[DPU_QOS_LUT_USAGE_NRT];
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
index 2533c4629021..c35e9faf2460 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
@@ -541,30 +541,15 @@ static void dpu_hw_sspp_setup_solidfill(struct dpu_sw_pipe *pipe, u32 color)
  				color);
  }
-static void dpu_hw_sspp_setup_danger_safe_lut(struct dpu_hw_sspp *ctx,
-			u32 danger_lut,
-			u32 safe_lut)
+static void dpu_hw_sspp_setup_qos_lut(struct dpu_hw_sspp *ctx,
+				      struct dpu_hw_qos_cfg *cfg)
  {
-	if (!ctx)
-		return;
-
-	DPU_REG_WRITE(&ctx->hw, SSPP_DANGER_LUT, danger_lut);
-	DPU_REG_WRITE(&ctx->hw, SSPP_SAFE_LUT, safe_lut);
-}
-
-static void dpu_hw_sspp_setup_creq_lut(struct dpu_hw_sspp *ctx,
-			u64 creq_lut)
-{
-	if (!ctx)
+	if (!ctx || !cfg)
  		return;
- if (ctx->cap && test_bit(DPU_SSPP_QOS_8LVL, &ctx->cap->features)) {
-		DPU_REG_WRITE(&ctx->hw, SSPP_CREQ_LUT_0, creq_lut);
-		DPU_REG_WRITE(&ctx->hw, SSPP_CREQ_LUT_1,
-				creq_lut >> 32);
-	} else {
-		DPU_REG_WRITE(&ctx->hw, SSPP_CREQ_LUT, creq_lut);
-	}
+	_dpu_hw_setup_qos_lut(&ctx->hw, SSPP_DANGER_LUT,
+			      test_bit(DPU_SSPP_QOS_8LVL, &ctx->cap->features),
+			      cfg);
  }
static void dpu_hw_sspp_setup_qos_ctrl(struct dpu_hw_sspp *ctx,
@@ -606,9 +591,7 @@ static void _setup_layer_ops(struct dpu_hw_sspp *c,
  	c->ops.setup_pe = dpu_hw_sspp_setup_pe_config;
if (test_bit(DPU_SSPP_QOS, &features)) {
-		c->ops.setup_danger_safe_lut =
-			dpu_hw_sspp_setup_danger_safe_lut;
-		c->ops.setup_creq_lut = dpu_hw_sspp_setup_creq_lut;
+		c->ops.setup_qos_lut = dpu_hw_sspp_setup_qos_lut;
  		c->ops.setup_qos_ctrl = dpu_hw_sspp_setup_qos_ctrl;
  	}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h
index 4278c421b6ac..085f34bc6b88 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h
@@ -254,25 +254,14 @@ struct dpu_hw_sspp_ops {
  	void (*setup_sharpening)(struct dpu_hw_sspp *ctx,
  			struct dpu_hw_sharp_cfg *cfg);
- /**
-	 * setup_danger_safe_lut - setup danger safe LUTs
-	 * @ctx: Pointer to pipe context
-	 * @danger_lut: LUT for generate danger level based on fill level
-	 * @safe_lut: LUT for generate safe level based on fill level
-	 *
-	 */
-	void (*setup_danger_safe_lut)(struct dpu_hw_sspp *ctx,
-			u32 danger_lut,
-			u32 safe_lut);
/**
-	 * setup_creq_lut - setup CREQ LUT
+	 * setup_qos_lut - setup QoS LUTs
  	 * @ctx: Pointer to pipe context
-	 * @creq_lut: LUT for generate creq level based on fill level
-	 *
+	 * @cfg: LUT configuration
  	 */
-	void (*setup_creq_lut)(struct dpu_hw_sspp *ctx,
-			u64 creq_lut);
+	void (*setup_qos_lut)(struct dpu_hw_sspp *ctx,
+			struct dpu_hw_qos_cfg *cfg);
/**
  	 * setup_qos_ctrl - setup QoS control
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.c
index 95d20b9a3f2f..9d2273fd2fed 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.c
@@ -73,6 +73,19 @@ static u32 dpu_hw_util_log_mask = DPU_DBG_MASK_NONE;
  #define QSEED3LITE_SEP_LUT_SIZE \
  	        (QSEED3LITE_LUT_SIZE * QSEED3LITE_SEPARABLE_LUTS * sizeof(u32))
+/* QOS_LUT */
+#define QOS_DANGER_LUT                    0x00
+#define QOS_SAFE_LUT                      0x04
+#define QOS_CREQ_LUT                      0x08
+#define QOS_QOS_CTRL                      0x0C
+#define QOS_CREQ_LUT_0                    0x14
+#define QOS_CREQ_LUT_1                    0x18
+
+/* QOS_QOS_CTRL */
+#define QOS_QOS_CTRL_DANGER_SAFE_EN       BIT(0)
+#define QOS_QOS_CTRL_DANGER_VBLANK_MASK   GENMASK(5, 4)
+#define QOS_QOS_CTRL_VBLANK_EN            BIT(16)
+#define QOS_QOS_CTRL_CREQ_VBLANK_MASK     GENMASK(21, 20)
void dpu_reg_write(struct dpu_hw_blk_reg_map *c,
  		u32 reg_off,
@@ -450,6 +463,24 @@ u64 _dpu_hw_get_qos_lut(const struct dpu_qos_lut_tbl *tbl,
  	return 0;
  }
+void _dpu_hw_setup_qos_lut(struct dpu_hw_blk_reg_map *c, u32 offset,
+			   bool qos_8lvl,
+			   const struct dpu_hw_qos_cfg *cfg)
+{
+	DPU_REG_WRITE(c, offset + QOS_DANGER_LUT, cfg->danger_lut);
+	DPU_REG_WRITE(c, offset + QOS_SAFE_LUT, cfg->safe_lut);
+
+	if (qos_8lvl) {
+		DPU_REG_WRITE(c, offset + QOS_CREQ_LUT_0, cfg->creq_lut);
+		DPU_REG_WRITE(c, offset + QOS_CREQ_LUT_1, cfg->creq_lut >> 32);
+	} else {
+		DPU_REG_WRITE(c, offset + QOS_CREQ_LUT, cfg->creq_lut);
+	}
+
+	DPU_REG_WRITE(c, offset + QOS_QOS_CTRL,
+		      cfg->danger_safe_en ? QOS_QOS_CTRL_DANGER_SAFE_EN : 0);
+}
+
  void dpu_hw_setup_misr(struct dpu_hw_blk_reg_map *c,
  		u32 misr_ctrl_offset,
  		bool enable, u32 frame_count)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h
index dc6e3b795aef..1f6079f47071 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h
@@ -305,6 +305,23 @@ struct dpu_drm_scaler_v2 {
  	struct dpu_drm_de_v1 de;
  };
+/**
+ * struct dpu_hw_qos_cfg: pipe QoS configuration
+ * @danger_lut: LUT for generate danger level based on fill level
+ * @safe_lut: LUT for generate safe level based on fill level
+ * @creq_lut: LUT for generate creq level based on fill level
+ * @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_qos_cfg {
+	u32 danger_lut;
+	u32 safe_lut;
+	u64 creq_lut;
+	bool danger_safe_en;
+};
+
  u32 *dpu_hw_util_get_log_mask_ptr(void);
void dpu_reg_write(struct dpu_hw_blk_reg_map *c,
@@ -336,6 +353,10 @@ void dpu_setup_cdp(struct dpu_hw_blk_reg_map *c, u32 offset,
  u64 _dpu_hw_get_qos_lut(const struct dpu_qos_lut_tbl *tbl,
  		u32 total_fl);
+void _dpu_hw_setup_qos_lut(struct dpu_hw_blk_reg_map *c, u32 offset,
+			   bool qos_8lvl,
+			   const struct dpu_hw_qos_cfg *cfg);
+
  void dpu_hw_setup_misr(struct dpu_hw_blk_reg_map *c,
  		u32 misr_ctrl_offset,
  		bool enable,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
index a6de4b82a188..dcffd6cc47fc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
@@ -49,9 +49,6 @@
  #define WB_OUT_IMAGE_SIZE                     0x2C0
  #define WB_OUT_XY                             0x2C4
-/* WB_QOS_CTRL */
-#define WB_QOS_CTRL_DANGER_SAFE_EN            BIT(0)
-
  static void dpu_hw_wb_setup_outaddress(struct dpu_hw_wb *ctx,
  		struct dpu_hw_wb_cfg *data)
  {
@@ -135,32 +132,14 @@ static void dpu_hw_wb_roi(struct dpu_hw_wb *ctx, struct dpu_hw_wb_cfg *wb)
  }
static void dpu_hw_wb_setup_qos_lut(struct dpu_hw_wb *ctx,
-		struct dpu_hw_wb_qos_cfg *cfg)
+		struct dpu_hw_qos_cfg *cfg)
  {
-	struct dpu_hw_blk_reg_map *c = &ctx->hw;
-	u32 qos_ctrl = 0;
-
  	if (!ctx || !cfg)
  		return;
- DPU_REG_WRITE(c, WB_DANGER_LUT, cfg->danger_lut);
-	DPU_REG_WRITE(c, WB_SAFE_LUT, cfg->safe_lut);
-
-	/*
-	 * for chipsets not using DPU_WB_QOS_8LVL but still using DPU
-	 * driver such as msm8998, the reset value of WB_CREQ_LUT is
-	 * sufficient for writeback to work. SW doesn't need to explicitly
-	 * program a value.
-	 */
-	if (ctx->caps && test_bit(DPU_WB_QOS_8LVL, &ctx->caps->features)) {
-		DPU_REG_WRITE(c, WB_CREQ_LUT_0, cfg->creq_lut);
-		DPU_REG_WRITE(c, WB_CREQ_LUT_1, cfg->creq_lut >> 32);
-	}
-
-	if (cfg->danger_safe_en)
-		qos_ctrl |= WB_QOS_CTRL_DANGER_SAFE_EN;
-
-	DPU_REG_WRITE(c, WB_QOS_CTRL, qos_ctrl);
+	_dpu_hw_setup_qos_lut(&ctx->hw, WB_DANGER_LUT,
+			      test_bit(DPU_WB_QOS_8LVL, &ctx->caps->features),
+			      cfg);
  }
static void dpu_hw_wb_setup_cdp(struct dpu_hw_wb *ctx,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h
index ab3541856258..c7f792eeb55c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h
@@ -21,20 +21,6 @@ struct dpu_hw_wb_cfg {
  	struct drm_rect crop;
  };
-/**
- * struct dpu_hw_wb_qos_cfg : Writeback pipe QoS configuration
- * @danger_lut: LUT for generate danger level based on fill level
- * @safe_lut: LUT for generate safe level based on fill level
- * @creq_lut: LUT for generate creq level based on fill level
- * @danger_safe_en: enable danger safe generation
- */
-struct dpu_hw_wb_qos_cfg {
-	u32 danger_lut;
-	u32 safe_lut;
-	u64 creq_lut;
-	bool danger_safe_en;
-};
-
  /**
   *
   * struct dpu_hw_wb_ops : Interface to the wb hw driver functions
@@ -56,7 +42,7 @@ struct dpu_hw_wb_ops {
  			struct dpu_hw_wb_cfg *wb);
void (*setup_qos_lut)(struct dpu_hw_wb *ctx,
-			struct dpu_hw_wb_qos_cfg *cfg);
+			struct dpu_hw_qos_cfg *cfg);
void (*setup_cdp)(struct dpu_hw_wb *ctx,
  			  const struct dpu_format *fmt,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index c8837d0aa0c3..d66745115917 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -190,12 +190,14 @@ static u64 _dpu_plane_calc_clk(const struct drm_display_mode *mode,
   * _dpu_plane_calc_fill_level - calculate fill level of the given source format
   * @plane:		Pointer to drm plane
   * @pipe:		Pointer to software pipe
+ * @lut_usage:		LUT usecase
   * @fmt:		Pointer to source buffer format
   * @src_width:		width of source buffer
   * Return: fill level corresponding to the source buffer/format or 0 if error
   */
  static int _dpu_plane_calc_fill_level(struct drm_plane *plane,
  		struct dpu_sw_pipe *pipe,
+		enum dpu_qos_lut_usage lut_usage,
  		const struct dpu_format *fmt, u32 src_width)
  {
  	struct dpu_plane *pdpu;
@@ -207,6 +209,9 @@ static int _dpu_plane_calc_fill_level(struct drm_plane *plane,
  		return 0;
  	}
+ if (lut_usage == DPU_QOS_LUT_USAGE_NRT)
+		return 0;
+
  	pdpu = to_dpu_plane(plane);
  	fixed_buff_size = pdpu->catalog->caps->pixel_ram_size;
@@ -252,83 +257,58 @@ static void _dpu_plane_set_qos_lut(struct drm_plane *plane,
  		const struct dpu_format *fmt, struct dpu_sw_pipe_cfg *pipe_cfg)
  {
  	struct dpu_plane *pdpu = to_dpu_plane(plane);
-	u64 qos_lut;
-	u32 total_fl = 0, lut_usage;
+	struct dpu_hw_qos_cfg cfg;
+	u32 total_fl, lut_usage;
if (!pdpu->is_rt_pipe) {
  		lut_usage = DPU_QOS_LUT_USAGE_NRT;
  	} else {
-		total_fl = _dpu_plane_calc_fill_level(plane, pipe, fmt,
-				drm_rect_width(&pipe_cfg->src_rect));
-
  		if (fmt && DPU_FORMAT_IS_LINEAR(fmt))
  			lut_usage = DPU_QOS_LUT_USAGE_LINEAR;
  		else
  			lut_usage = DPU_QOS_LUT_USAGE_MACROTILE;
  	}
- qos_lut = _dpu_hw_get_qos_lut(
-			&pdpu->catalog->perf->qos_lut_tbl[lut_usage], total_fl);
+	total_fl = _dpu_plane_calc_fill_level(plane, pipe, lut_usage, fmt,
+				drm_rect_width(&pipe_cfg->src_rect));
+
+	cfg.creq_lut = _dpu_hw_get_qos_lut(&pdpu->catalog->perf->qos_lut_tbl[lut_usage], total_fl);
+	cfg.danger_lut = pdpu->catalog->perf->danger_lut_tbl[lut_usage];
+	cfg.safe_lut = pdpu->catalog->perf->safe_lut_tbl[lut_usage];
+
+	if (pipe->sspp->idx != SSPP_CURSOR0 &&
+	    pipe->sspp->idx != SSPP_CURSOR1 &&
+	    pdpu->is_rt_pipe)
+		cfg.danger_safe_en = true;
+
+	DPU_DEBUG_PLANE(pdpu, "pnum:%d ds:%d is_rt:%d\n",
+		pdpu->pipe - SSPP_VIG0,
+		cfg.danger_safe_en,
+		pdpu->is_rt_pipe);
trace_dpu_perf_set_qos_luts(pipe->sspp->idx - SSPP_VIG0,
  			(fmt) ? fmt->base.pixel_format : 0,
-			pdpu->is_rt_pipe, total_fl, qos_lut, lut_usage);
+			pdpu->is_rt_pipe, total_fl, cfg.creq_lut, lut_usage);
DPU_DEBUG_PLANE(pdpu, "pnum:%d fmt: %4.4s rt:%d fl:%u lut:0x%llx\n",
  			pdpu->pipe - SSPP_VIG0,
  			fmt ? (char *)&fmt->base.pixel_format : NULL,
-			pdpu->is_rt_pipe, total_fl, qos_lut);
-
-	pipe->sspp->ops.setup_creq_lut(pipe->sspp, qos_lut);
-}
-
-/**
- * _dpu_plane_set_danger_lut - set danger/safe LUT of the given plane
- * @plane:		Pointer to drm plane
- * @pipe:		Pointer to software pipe
- * @fmt:		Pointer to source buffer format
- */
-static void _dpu_plane_set_danger_lut(struct drm_plane *plane,
-		struct dpu_sw_pipe *pipe,
-		const struct dpu_format *fmt)
-{
-	struct dpu_plane *pdpu = to_dpu_plane(plane);
-	u32 danger_lut, safe_lut;
-
-	if (!pdpu->is_rt_pipe) {
-		danger_lut = pdpu->catalog->perf->danger_lut_tbl
-				[DPU_QOS_LUT_USAGE_NRT];
-		safe_lut = pdpu->catalog->perf->safe_lut_tbl
-				[DPU_QOS_LUT_USAGE_NRT];
-	} else {
-		if (fmt && DPU_FORMAT_IS_LINEAR(fmt)) {
-			danger_lut = pdpu->catalog->perf->danger_lut_tbl
-					[DPU_QOS_LUT_USAGE_LINEAR];
-			safe_lut = pdpu->catalog->perf->safe_lut_tbl
-					[DPU_QOS_LUT_USAGE_LINEAR];
-		} else {
-			danger_lut = pdpu->catalog->perf->danger_lut_tbl
-					[DPU_QOS_LUT_USAGE_MACROTILE];
-			safe_lut = pdpu->catalog->perf->safe_lut_tbl
-					[DPU_QOS_LUT_USAGE_MACROTILE];
-		}
-	}
+			pdpu->is_rt_pipe, total_fl, cfg.creq_lut);
trace_dpu_perf_set_danger_luts(pdpu->pipe - SSPP_VIG0,
  			(fmt) ? fmt->base.pixel_format : 0,
  			(fmt) ? fmt->fetch_mode : 0,
-			danger_lut,
-			safe_lut);
+			cfg.danger_lut,
+			cfg.safe_lut);
DPU_DEBUG_PLANE(pdpu, "pnum:%d fmt: %4.4s mode:%d luts[0x%x, 0x%x]\n",
  		pdpu->pipe - SSPP_VIG0,
  		fmt ? (char *)&fmt->base.pixel_format : NULL,
  		fmt ? fmt->fetch_mode : -1,
-		danger_lut,
-		safe_lut);
+		cfg.danger_lut,
+		cfg.safe_lut);
- pipe->sspp->ops.setup_danger_safe_lut(pipe->sspp,
-			danger_lut, safe_lut);
+	pipe->sspp->ops.setup_qos_lut(pipe->sspp, &cfg);
  }
/**
@@ -336,7 +316,6 @@ static void _dpu_plane_set_danger_lut(struct drm_plane *plane,
   * @plane:		Pointer to drm plane
   * @pipe:		Pointer to software pipe
   * @enable:		true to enable QoS control
- * @flags:		QoS control mode (enum dpu_plane_qos)
   */
  static void _dpu_plane_set_qos_ctrl(struct drm_plane *plane,
  	struct dpu_sw_pipe *pipe,
@@ -1086,10 +1065,6 @@ static void dpu_plane_sspp_update_pipe(struct drm_plane *plane,
  	}
_dpu_plane_set_qos_lut(plane, pipe, fmt, pipe_cfg);
-	_dpu_plane_set_danger_lut(plane, pipe, fmt);
-	_dpu_plane_set_qos_ctrl(plane, pipe,
-				pipe->sspp->idx != SSPP_CURSOR0 &&
-				pipe->sspp->idx != SSPP_CURSOR1);
if (pipe->sspp->idx != SSPP_CURSOR0 &&
  	    pipe->sspp->idx != SSPP_CURSOR1)
Reviewed-by: Jeykumar Sankaran <quic_jeykumar@xxxxxxxxxxx>



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