Re: [PATCH v2 6/8] drm/msm/dpu: Remove num_enc from topology struct in favour of num_dsc

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On 22/12/2022 01:19, Marijn Suijten wrote:
Downstream calls this num_enc yet the DSC patches introduced a new
num_dsc struct member, leaving num_enc effectively unused.

Fixes: 7e9cc175b159 ("drm/msm/disp/dpu1: Add support for DSC in topology")
Signed-off-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 9 ++++-----
  drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c      | 4 ++--
  drivers/gpu/drm/msm/msm_drv.h               | 2 --
  3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 9c6817b5a194..a158cd502d38 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -579,19 +579,18 @@ static struct msm_display_topology dpu_encoder_get_topology(
  			topology.num_dspp = topology.num_lm;
  	}
- topology.num_enc = 0;
  	topology.num_intf = intf_count;
if (dpu_enc->dsc) {
-		/* In case of Display Stream Compression (DSC), we would use
-		 * 2 encoders, 2 layer mixers and 1 interface
+		/*
+		 * In case of Display Stream Compression (DSC), we would use
+		 * 2 DSC encoders, 2 layer mixers and 1 interface
  		 * this is power optimal and can drive up to (including) 4k
  		 * screens
  		 */
-		topology.num_enc = 2;
  		topology.num_dsc = 2;
-		topology.num_intf = 1;
  		topology.num_lm = 2;
+		topology.num_intf = 1;

Unless there is a reason, please move num_intf assignment back while preparing v3.

With that fixed:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

  	}
return topology;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index dcbf03d2940a..5e7aa0f3a31c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -548,8 +548,8 @@ static int _dpu_rm_populate_requirements(
  {
  	reqs->topology = req_topology;
- DRM_DEBUG_KMS("num_lm: %d num_enc: %d num_intf: %d\n",
-		      reqs->topology.num_lm, reqs->topology.num_enc,
+	DRM_DEBUG_KMS("num_lm: %d num_dsc: %d num_intf: %d\n",
+		      reqs->topology.num_lm, reqs->topology.num_dsc,
  		      reqs->topology.num_intf);
return 0;
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d4e0ef608950..74626a271f46 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -82,14 +82,12 @@ enum msm_event_wait {
  /**
   * struct msm_display_topology - defines a display topology pipeline
   * @num_lm:       number of layer mixers used
- * @num_enc:      number of compression encoder blocks used
   * @num_intf:     number of interfaces the panel is mounted on
   * @num_dspp:     number of dspp blocks used
   * @num_dsc:      number of Display Stream Compression (DSC) blocks used
   */
  struct msm_display_topology {
  	u32 num_lm;
-	u32 num_enc;
  	u32 num_intf;
  	u32 num_dspp;
  	u32 num_dsc;

--
With best wishes
Dmitry




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