Re: [PATCH RFC v5 09/10] drm/msm/dpu: Use DRM solid_fill property

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On 7/30/2023 9:15 PM, Dmitry Baryshkov wrote:
On 28/07/2023 20:02, Jessica Zhang wrote:
Drop DPU_PLANE_COLOR_FILL_FLAG and check the DRM solid_fill property to
determine if the plane is solid fill. In addition drop the DPU plane
color_fill field as we can now use drm_plane_state.solid_fill instead,
and pass in drm_plane_state.alpha to _dpu_plane_color_fill_pipe() to
allow userspace to configure the alpha value for the solid fill color.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 24 ++++++++++++++++++------
  1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 114c803ff99b..95fc0394d13e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -42,7 +42,6 @@
  #define SHARP_SMOOTH_THR_DEFAULT    8
  #define SHARP_NOISE_THR_DEFAULT    2
-#define DPU_PLANE_COLOR_FILL_FLAG    BIT(31)
  #define DPU_ZPOS_MAX 255
  /*
@@ -82,7 +81,6 @@ struct dpu_plane {
      enum dpu_sspp pipe;
-    uint32_t color_fill;
      bool is_error;
      bool is_rt_pipe;
      const struct dpu_mdss_cfg *catalog;
@@ -606,6 +604,20 @@ static void _dpu_plane_color_fill_pipe(struct dpu_plane_state *pstate,       _dpu_plane_setup_scaler(pipe, fmt, true, &pipe_cfg, pstate->rotation);
  }
+static uint32_t _dpu_plane_get_bgr_fill_color(struct drm_solid_fill solid_fill)

As I commented for v4 (please excuse me for not responding to your email at thattime), we can return abgr here, taking plane->state->alpha into account.

Hi Dmitry,

Since it seems that this comment wasn't resolved, I can drop your R-B tag in the next revision.

From my previous response, I pointed out that the color parameter expects an RGB value [1].

So is the intention here to refactor _dpu_plane_color_fill() to accept an ABGR8888 color?

Thanks,

Jessica Zhang

[1] https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c#L676


+{
+    uint32_t ret = 0;
+    uint8_t b = solid_fill.b >> 24;
+    uint8_t g = solid_fill.g >> 24;
+    uint8_t r = solid_fill.r >> 24;
+
+    ret |= b << 16;
+    ret |= g << 8;
+    ret |= r;
+
+    return ret;
+}
+
  /**
   * _dpu_plane_color_fill - enables color fill on plane
   * @pdpu:   Pointer to DPU plane object
@@ -977,9 +989,9 @@ void dpu_plane_flush(struct drm_plane *plane)
      if (pdpu->is_error)
          /* force white frame with 100% alpha pipe output on error */
          _dpu_plane_color_fill(pdpu, 0xFFFFFF, 0xFF);
-    else if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG)
-        /* force 100% alpha */
-        _dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
+    else if (drm_plane_solid_fill_enabled(plane->state))
+        _dpu_plane_color_fill(pdpu, _dpu_plane_get_bgr_fill_color(plane->state->solid_fill),
+                plane->state->alpha);
      else {
          dpu_plane_flush_csc(pdpu, &pstate->pipe);
          dpu_plane_flush_csc(pdpu, &pstate->r_pipe);
@@ -1024,7 +1036,7 @@ static void dpu_plane_sspp_update_pipe(struct drm_plane *plane,
      }
      /* override for color fill */
-    if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG) {
+    if (drm_plane_solid_fill_enabled(plane->state)) {
          _dpu_plane_set_qos_ctrl(plane, pipe, false);
          /* skip remaining processing on color fill */


--
With best wishes
Dmitry




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