Re: [PATCH v1 1/3] drm/msm/dp: move struc of msm_display_info to msm_drv.h

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On 6/24/2022 2:40 PM, Doug Anderson wrote:
Hi,

On Fri, Jun 24, 2022 at 10:15 AM Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx> wrote:
With current implementation, communication between interface driver and
upper mdss encoder layer are implemented through function calls. This
increase code complexity. Since struct msm_display_info contains msm
generic display information, it can be expended to contains more useful
information, such as widebus and dcs, in future to serve as communication
channel purpose between interface driver and upper mdss encoder layer so
that existing function calls can be eliminated.
This patch more struct msm_display_info to msm_drv.h to be visible by
whole msm scope.

Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 20 --------------------
  drivers/gpu/drm/msm/msm_drv.h               | 19 +++++++++++++++++++
  2 files changed, 19 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 781d41c..6b604c5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -19,26 +19,6 @@
  #define IDLE_TIMEOUT   (66 - 16/2)

  /**
- * struct msm_display_info - defines display properties
- * @intf_type:          DRM_MODE_ENCODER_ type
- * @capabilities:       Bitmask of display flags
- * @num_of_h_tiles:     Number of horizontal tiles in case of split interface
- * @h_tile_instance:    Controller instance used per tile. Number of elements is
- *                      based on num_of_h_tiles
- * @is_te_using_watchdog_timer:  Boolean to indicate watchdog TE is
- *                              used instead of panel TE in cmd mode panels
- * @dsc:               DSC configuration data for DSC-enabled displays
- */
-struct msm_display_info {
-       int intf_type;
-       uint32_t capabilities;
-       uint32_t num_of_h_tiles;
-       uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY];
-       bool is_te_using_watchdog_timer;
-       struct msm_display_dsc_config *dsc;
So in the structure you're "moving" there's this member called "dsc".


-};
-
-/**
   * dpu_encoder_assign_crtc - Link the encoder to the crtc it's assigned to
   * @encoder:   encoder pointer
   * @crtc:      crtc pointer
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index fdbaad5..f9c263b 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -106,11 +106,30 @@ struct msm_drm_thread {
         struct kthread_worker *worker;
  };

+<<<<<<< HEAD
The above doesn't look like valid C to me.


  /* DSC config */
  struct msm_display_dsc_config {
         struct drm_dsc_config *drm;
  };

+/**
+ * struct msm_display_info - defines display properties
+ * @intf_type:          DRM_MODE_ENCODER_ type
+ * @capabilities:       Bitmask of display flags
+ * @num_of_h_tiles:     Number of horizontal tiles in case of split interface
+ * @h_tile_instance:    Controller instance used per tile. Number of elements is
+ *                      based on num_of_h_tiles
+ * @is_te_using_watchdog_timer:  Boolean to indicate watchdog TE is
+ *                              used instead of panel TE in cmd mode panels
+ */
+struct msm_display_info {
+       int intf_type;
+       uint32_t capabilities;
+       uint32_t num_of_h_tiles;
+       uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY];
+       bool is_te_using_watchdog_timer;
...but then when you "move" the structure to its new location, which
should be a noop, then <poof> the "dsc" variable vanishes (along with
the kernel doc description of it before the structure).

Sorry, i did not resolve the conflicts correctly  when i cherry-pick them to msm-next tree.

Will fix them.

-Doug



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