Re: [PATCH RFC v6 09/10] drm/msm/dpu: Use DRM solid_fill property

[Dmitry Baryshkov]

On Tue, 29 Aug 2023 at 03:06, Jessica Zhang <quic_jesszhan@xxxxxxxxxxx> 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 | 37 +++++++++++++++++++++----------
>  1 file changed, 25 insertions(+), 12 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..639ecbeeacf8 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;
> @@ -606,19 +604,35 @@ 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_abgr_fill_color(struct drm_plane_state *state)
> +{
> +       struct drm_solid_fill solid_fill = state->solid_fill;
> +
> +       uint32_t ret = 0;
> +       uint8_t a = state->alpha & 0xFF;
> +       uint8_t b = solid_fill.b >> 24;
> +       uint8_t g = solid_fill.g >> 24;
> +       uint8_t r = solid_fill.r >> 24;
> +
> +       ret |= a << 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
>   * @color:  RGB fill color value, [23..16] Blue, [15..8] Green, [7..0] Red
>   * @alpha:  8-bit fill alpha value, 255 selects 100% alpha

drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c:632: warning: Excess
function parameter 'alpha' description in '_dpu_plane_color_fill'


>   */
> -static void _dpu_plane_color_fill(struct dpu_plane *pdpu,
> -               uint32_t color, uint32_t alpha)
> +static void _dpu_plane_color_fill(struct dpu_plane *pdpu, uint32_t color)
>  {
>         const struct dpu_format *fmt;
>         const struct drm_plane *plane = &pdpu->base;
>         struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
> -       u32 fill_color = (color & 0xFFFFFF) | ((alpha & 0xFF) << 24);
>
>         DPU_DEBUG_PLANE(pdpu, "\n");
>
> @@ -633,11 +647,11 @@ static void _dpu_plane_color_fill(struct dpu_plane *pdpu,
>
>         /* update sspp */
>         _dpu_plane_color_fill_pipe(pstate, &pstate->pipe, &pstate->pipe_cfg.dst_rect,
> -                                  fill_color, fmt);
> +                                  color, fmt);
>
>         if (pstate->r_pipe.sspp)
>                 _dpu_plane_color_fill_pipe(pstate, &pstate->r_pipe, &pstate->r_pipe_cfg.dst_rect,
> -                                          fill_color, fmt);
> +                                          color, fmt);
>  }
>
>  static int dpu_plane_prepare_fb(struct drm_plane *plane,
> @@ -976,10 +990,9 @@ 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);
> +               _dpu_plane_color_fill(pdpu, 0xFFFFFFFF);
> +       else if (drm_plane_solid_fill_enabled(plane->state))
> +               _dpu_plane_color_fill(pdpu, _dpu_plane_get_abgr_fill_color(plane->state));
>         else {
>                 dpu_plane_flush_csc(pdpu, &pstate->pipe);
>                 dpu_plane_flush_csc(pdpu, &pstate->r_pipe);
> @@ -1024,7 +1037,7 @@ 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 */
>
> --
> 2.42.0
>


-- 
With best wishes
Dmitry