Re: [PATCH 04/12] drm/msm: add arrays listing formats supported by MDP4/MDP5 hardware

Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> · Fri, 19 Apr 2024 14:57:00 -0700

On 4/19/2024 2:21 PM, Dmitry Baryshkov wrote:
On Sat, 20 Apr 2024 at 00:06, Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> wrote:



On 12/2/2023 1:40 PM, Dmitry Baryshkov wrote:
MDP4 and MDP5 drivers enumerate supported formats each time the plane is
created. In preparation to merger of MDP DPU format databases, define
precise formats list, so that changes to the database do not cause the
driver to add unsupported format to the list.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
   drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c | 57 ++++++++++++++++++++--
   drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c | 36 +++++++++++---
   drivers/gpu/drm/msm/disp/mdp_format.c      | 28 -----------
   drivers/gpu/drm/msm/disp/mdp_kms.h         |  1 -
   4 files changed, 80 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c
index b689b618da78..cebe20c82a54 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c
@@ -371,6 +371,47 @@ static const uint64_t supported_format_modifiers[] = {
       DRM_FORMAT_MOD_INVALID
   };

+const uint32_t mdp4_rgb_formats[] = {
+     DRM_FORMAT_ARGB8888,
+     DRM_FORMAT_ABGR8888,
+     DRM_FORMAT_RGBA8888,
+     DRM_FORMAT_BGRA8888,
+     DRM_FORMAT_XRGB8888,
+     DRM_FORMAT_XBGR8888,
+     DRM_FORMAT_RGBX8888,
+     DRM_FORMAT_BGRX8888,
+     DRM_FORMAT_RGB888,
+     DRM_FORMAT_BGR888,
+     DRM_FORMAT_RGB565,
+     DRM_FORMAT_BGR565,
+};
+
+const uint32_t mdp4_rgb_yuv_formats[] = {
+     DRM_FORMAT_ARGB8888,
+     DRM_FORMAT_ABGR8888,
+     DRM_FORMAT_RGBA8888,
+     DRM_FORMAT_BGRA8888,
+     DRM_FORMAT_XRGB8888,
+     DRM_FORMAT_XBGR8888,
+     DRM_FORMAT_RGBX8888,
+     DRM_FORMAT_BGRX8888,
+     DRM_FORMAT_RGB888,
+     DRM_FORMAT_BGR888,
+     DRM_FORMAT_RGB565,
+     DRM_FORMAT_BGR565,
+
+     DRM_FORMAT_NV12,
+     DRM_FORMAT_NV21,
+     DRM_FORMAT_NV16,
+     DRM_FORMAT_NV61,
+     DRM_FORMAT_VYUY,
+     DRM_FORMAT_UYVY,
+     DRM_FORMAT_YUYV,
+     DRM_FORMAT_YVYU,
+     DRM_FORMAT_YUV420,
+     DRM_FORMAT_YVU420,
+};
+
   /* initialize plane */
   struct drm_plane *mdp4_plane_init(struct drm_device *dev,
               enum mdp4_pipe pipe_id, bool private_plane)
@@ -379,6 +420,8 @@ struct drm_plane *mdp4_plane_init(struct drm_device *dev,
       struct mdp4_plane *mdp4_plane;
       int ret;
       enum drm_plane_type type;
+     const uint32_t *formats;
+     unsigned int nformats;

       mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
       if (!mdp4_plane) {
@@ -392,13 +435,17 @@ struct drm_plane *mdp4_plane_init(struct drm_device *dev,
       mdp4_plane->name = pipe_names[pipe_id];
       mdp4_plane->caps = mdp4_pipe_caps(pipe_id);

-     mdp4_plane->nformats = mdp_get_formats(mdp4_plane->formats,
-                     ARRAY_SIZE(mdp4_plane->formats),
-                     !pipe_supports_yuv(mdp4_plane->caps));
-
       type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
+
+     if (pipe_supports_yuv(mdp4_plane->caps)) {
+             formats = mdp4_rgb_yuv_formats;
+             nformats = ARRAY_SIZE(mdp4_rgb_yuv_formats);
+     } else {
+             formats = mdp4_rgb_formats;
+             nformats = ARRAY_SIZE(mdp4_rgb_formats);
+     }
       ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
-                              mdp4_plane->formats, mdp4_plane->nformats,
+                              formats, nformats,
                                supported_format_modifiers, type, NULL);
       if (ret)
               goto fail;
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index 0d5ff03cb091..aa8342d93393 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -17,9 +17,6 @@

   struct mdp5_plane {
       struct drm_plane base;
-
-     uint32_t nformats;
-     uint32_t formats[32];
   };
   #define to_mdp5_plane(x) container_of(x, struct mdp5_plane, base)

@@ -1007,6 +1004,32 @@ uint32_t mdp5_plane_get_flush(struct drm_plane *plane)
       return mask;
   }

+const uint32_t mdp5_plane_formats[] = {
+     DRM_FORMAT_ARGB8888,
+     DRM_FORMAT_ABGR8888,
+     DRM_FORMAT_RGBA8888,
+     DRM_FORMAT_BGRA8888,
+     DRM_FORMAT_XRGB8888,
+     DRM_FORMAT_XBGR8888,
+     DRM_FORMAT_RGBX8888,
+     DRM_FORMAT_BGRX8888,
+     DRM_FORMAT_RGB888,
+     DRM_FORMAT_BGR888,
+     DRM_FORMAT_RGB565,
+     DRM_FORMAT_BGR565,
+
+     DRM_FORMAT_NV12,
+     DRM_FORMAT_NV21,
+     DRM_FORMAT_NV16,
+     DRM_FORMAT_NV61,
+     DRM_FORMAT_VYUY,
+     DRM_FORMAT_UYVY,
+     DRM_FORMAT_YUYV,
+     DRM_FORMAT_YVYU,
+     DRM_FORMAT_YUV420,
+     DRM_FORMAT_YVU420,
+};
+
   /* initialize plane */
   struct drm_plane *mdp5_plane_init(struct drm_device *dev,
                                 enum drm_plane_type type)
@@ -1023,12 +1046,9 @@ struct drm_plane *mdp5_plane_init(struct drm_device *dev,

       plane = &mdp5_plane->base;

-     mdp5_plane->nformats = mdp_get_formats(mdp5_plane->formats,
-             ARRAY_SIZE(mdp5_plane->formats), false);
-
       ret = drm_universal_plane_init(dev, plane, 0xff, &mdp5_plane_funcs,
-                     mdp5_plane->formats, mdp5_plane->nformats,
-                     NULL, type, NULL);
+                                    mdp5_plane_formats, ARRAY_SIZE(mdp5_plane_formats),
+                                    NULL, type, NULL);
       if (ret)
               goto fail;


Did you accidentally drop checking for YUV format cap before adding the
formats for the plane similar to

No. MDP5 driver asks RGB+YUV planes see the mdp_get_formats() arguments.


Ack.


  > +    if (pipe_supports_yuv(mdp4_plane->caps)) {
  > +            formats = mdp4_rgb_yuv_formats;
  > +            nformats = ARRAY_SIZE(mdp4_rgb_yuv_formats);
  > +    } else {
  > +            formats = mdp4_rgb_formats;
  > +            nformats = ARRAY_SIZE(mdp4_rgb_formats);
  > +    }


Also, from what I checked the format table is identical between mdp4 and
mdp5. Even if we cannot unify mdp4/5 and dpu tables, we can atleast have
mdp_4_5_rgb and mdp_4_5_rgb_yuv?

I'd rather not do that. If we are to change mdp4 or mdp5 planes at
some point, I don't want to think about the second driver. The amount
of duplication is minimal compared to the burden of thinking about the
second driver.


Ok, I dont expect them to change tbh as it has not happened last few 
years now.

Anyway, that part is fine. Hence


Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>







