Re: [PATCH 10/16] drm/msm/dpu: add support to disable CDM block during encoder cleanup

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On 8/30/2023 5:14 PM, Dmitry Baryshkov wrote:
On Thu, 31 Aug 2023 at 01:50, Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> wrote:

In preparation of setting up CDM block, add the logic to disable it
properly during encoder cleanup.

Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c      | 8 ++++++++
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 2 ++
  2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 582680804016..1b1e07292a9e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -26,6 +26,7 @@
  #include "dpu_hw_dspp.h"
  #include "dpu_hw_dsc.h"
  #include "dpu_hw_merge3d.h"
+#include "dpu_hw_cdm.h"
  #include "dpu_formats.h"
  #include "dpu_encoder_phys.h"
  #include "dpu_crtc.h"
@@ -2097,6 +2098,13 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc)
                                         phys_enc->hw_pp->merge_3d->idx);
         }

+       if (phys_enc->hw_cdm && phys_enc->hw_cdm->ops.bind_pingpong_blk && phys_enc->hw_pp) {
+               phys_enc->hw_cdm->ops.bind_pingpong_blk(phys_enc->hw_cdm,
+                                                       false, phys_enc->hw_pp->idx);

But it was already bound in the cdm->enable, wasn't it?


This is disable. I think you missed the "false" parameter.

Also the update_pending_flush_cdm should be called even for DPU < 5.0,
where there should be no bind_pingpong_blk callback.


Ack. This is a good catch!

+               if (phys_enc->hw_ctl->ops.update_pending_flush_cdm)
+                       phys_enc->hw_ctl->ops.update_pending_flush_cdm(phys_enc->hw_ctl);
+       }
+
         if (dpu_enc->dsc) {
                 dpu_encoder_unprep_dsc(dpu_enc);
                 dpu_enc->dsc = NULL;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
index 24dbc28be4f8..510c1c41ddbc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
@@ -150,6 +150,7 @@ enum dpu_intr_idx {
   * @hw_pp:             Hardware interface to the ping pong registers
   * @hw_intf:           Hardware interface to the intf registers
   * @hw_wb:             Hardware interface to the wb registers
+ * @hw_cdm:            Hardware interface to the CDM registers
   * @dpu_kms:           Pointer to the dpu_kms top level
   * @cached_mode:       DRM mode cached at mode_set time, acted on in enable
   * @enabled:           Whether the encoder has enabled and running a mode
@@ -178,6 +179,7 @@ struct dpu_encoder_phys {
         struct dpu_hw_pingpong *hw_pp;
         struct dpu_hw_intf *hw_intf;
         struct dpu_hw_wb *hw_wb;
+       struct dpu_hw_cdm *hw_cdm;
         struct dpu_kms *dpu_kms;
         struct drm_display_mode cached_mode;
         enum dpu_enc_split_role split_role;
--
2.40.1






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