Re: [RFC PATCH v2 3/3] drm/msm/dpu: Use color_fill property for DPU planes

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On Wed, Jan 4, 2023 at 2:10 AM Jessica Zhang <quic_jesszhan@xxxxxxxxxxx> wrote:
>
>
>
> On 12/22/2022 7:12 PM, Dmitry Baryshkov wrote:
> > On 23/12/2022 00:14, Jessica Zhang wrote:
> >> Initialize and use the color_fill properties for planes in DPU driver. In
> >> addition, relax framebuffer requirements within atomic commit path and
> >> add checks for NULL framebuffers. Finally, drop DPU_PLANE_COLOR_FILL_FLAG
> >> as it's unused.
> >>
> >> Changes since V2:
> >> - Fixed dropped 'const' warning
> >> - Dropped use of solid_fill_format
> >> - Switched to using drm_plane_solid_fill_enabled helper method
> >> - Added helper to convert color fill to BGR888 (Rob)
> >> - Added support for solid fill on planes of varying sizes
> >> - Removed DPU_PLANE_COLOR_FILL_FLAG
> >>
> >> Signed-off-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
> >> ---
> >>   drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c  |  9 +++-
> >>   drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 65 ++++++++++++++---------
> >>   2 files changed, 49 insertions(+), 25 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> >> b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> >> index 13ce321283ff..0695b70ea1b7 100644
> >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> >> @@ -409,6 +409,7 @@ static void _dpu_crtc_blend_setup_mixer(struct
> >> drm_crtc *crtc,
> >>       struct drm_plane_state *state;
> >>       struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
> >>       struct dpu_plane_state *pstate = NULL;
> >> +    const struct msm_format *fmt;
> >>       struct dpu_format *format;
> >>       struct dpu_hw_ctl *ctl = mixer->lm_ctl;
> >> @@ -441,7 +442,13 @@ static void _dpu_crtc_blend_setup_mixer(struct
> >> drm_crtc *crtc,
> >>                   sspp_idx - SSPP_VIG0,
> >>                   state->fb ? state->fb->base.id : -1);
> >> -        format = to_dpu_format(msm_framebuffer_format(pstate->base.fb));
> >> +        if (pstate->base.fb)
> >> +            fmt = msm_framebuffer_format(pstate->base.fb);
> >> +        else
> >> +            fmt = dpu_get_msm_format(&_dpu_crtc_get_kms(crtc)->base,
> >> +                    DRM_FORMAT_ABGR8888, 0);
> >> +
> >> +        format = to_dpu_format(fmt);
> >>           if (pstate->stage == DPU_STAGE_BASE && format->alpha_enable)
> >>               bg_alpha_enable = true;
> >> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> >> b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> >> index 86719020afe2..51a7507373f7 100644
> >> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> >> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> >> @@ -44,7 +44,6 @@
> >>   #define DPU_NAME_SIZE  12
> >> -#define DPU_PLANE_COLOR_FILL_FLAG    BIT(31)
> >>   #define DPU_ZPOS_MAX 255
> >>   /* multirect rect index */
> >> @@ -105,7 +104,6 @@ struct dpu_plane {
> >>       enum dpu_sspp pipe;
> >>       struct dpu_hw_pipe *pipe_hw;
> >> -    uint32_t color_fill;
> >>       bool is_error;
> >>       bool is_rt_pipe;
> >>       const struct dpu_mdss_cfg *catalog;
> >> @@ -678,6 +676,17 @@ static void _dpu_plane_setup_scaler(struct
> >> dpu_plane *pdpu,
> >>                   &scaler3_cfg);
> >>   }
> >> +static uint32_t _dpu_plane_get_fill_color(struct drm_solid_fill
> >> solid_fill)
> >> +{
> >> +    uint32_t ret = 0;
> >> +
> >> +    ret |= ((uint8_t) solid_fill.b) << 16;
> >> +    ret |= ((uint8_t) solid_fill.g) << 8;
> >> +    ret |= ((uint8_t) solid_fill.r);
> >> +
> >> +    return ret;
> >> +}
> >> +
> >>   /**
> >>    * _dpu_plane_color_fill - enables color fill on plane
> >>    * @pdpu:   Pointer to DPU plane object
> >> @@ -1001,12 +1010,17 @@ static int dpu_plane_atomic_check(struct
> >> drm_plane *plane,
> >>       dst = drm_plane_state_dest(new_plane_state);
> >> -    fb_rect.x2 = new_plane_state->fb->width;
> >> -    fb_rect.y2 = new_plane_state->fb->height;
> >> +    if (new_plane_state->fb) {
> >> +        fb_rect.x2 = new_plane_state->fb->width;
> >> +        fb_rect.y2 = new_plane_state->fb->height;
> >> +    }
> >>       max_linewidth = pdpu->catalog->caps->max_linewidth;
> >> -    fmt = to_dpu_format(msm_framebuffer_format(new_plane_state->fb));
> >> +    if (new_plane_state->fb)
> >> +        fmt =
> >> to_dpu_format(msm_framebuffer_format(new_plane_state->fb));
> >> +    else
> >> +        fmt = dpu_get_dpu_format(DRM_FORMAT_ABGR8888);
> >>       min_src_size = DPU_FORMAT_IS_YUV(fmt) ? 2 : 1;
> >> @@ -1018,7 +1032,7 @@ static int dpu_plane_atomic_check(struct
> >> drm_plane *plane,
> >>           return -EINVAL;
> >>       /* check src bounds */
> >> -    } else if (!dpu_plane_validate_src(&src, &fb_rect, min_src_size)) {
> >> +    } else if (new_plane_state->fb && !dpu_plane_validate_src(&src,
> >> &fb_rect, min_src_size)) {
> >>           DPU_DEBUG_PLANE(pdpu, "invalid source " DRM_RECT_FMT "\n",
> >>                   DRM_RECT_ARG(&src));
> >>           return -E2BIG;
> >> @@ -1086,9 +1100,10 @@ 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)
> >> +    else if (!(plane->state->fb) &&
> >> drm_plane_solid_fill_enabled(plane->state))
> >
> > And what if the plane has both fb and solid_fill proprety?
>
> Hi Dmitry,
>
> If both the FB and solid_fill are set, then the driver should prioritize
> the FB over the solid_fill.

Please add this to the documentation of the property as well.

>
> Thanks,
>
> Jessica Zhang
>
> >
> >>           /* force 100% alpha */
> >> -        _dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
> >> +        _dpu_plane_color_fill(pdpu,
> >> _dpu_plane_get_fill_color(plane->state->solid_fill),
> >> +                0xFF);
> >>       else if (pdpu->pipe_hw && pdpu->pipe_hw->ops.setup_csc) {
> >>           const struct dpu_format *fmt =
> >> to_dpu_format(msm_framebuffer_format(plane->state->fb));
> >>           const struct dpu_csc_cfg *csc_ptr = _dpu_plane_get_csc(pdpu,
> >> fmt);
> >> @@ -1127,23 +1142,30 @@ static void
> >> dpu_plane_sspp_atomic_update(struct drm_plane *plane)
> >>       struct drm_crtc *crtc = state->crtc;
> >>       struct drm_framebuffer *fb = state->fb;
> >>       bool is_rt_pipe, update_qos_remap;
> >> -    const struct dpu_format *fmt =
> >> -        to_dpu_format(msm_framebuffer_format(fb));
> >> +    const struct dpu_format *fmt;
> >>       struct dpu_hw_pipe_cfg pipe_cfg;
> >> -    memset(&pipe_cfg, 0, sizeof(struct dpu_hw_pipe_cfg));
> >> -
> >> -    _dpu_plane_set_scanout(plane, pstate, &pipe_cfg, fb);
> >> -
> >>       pstate->pending = true;
> >>       is_rt_pipe = (dpu_crtc_get_client_type(crtc) != NRT_CLIENT);
> >>       _dpu_plane_set_qos_ctrl(plane, false, DPU_PLANE_QOS_PANIC_CTRL);
> >> -    DPU_DEBUG_PLANE(pdpu, "FB[%u] " DRM_RECT_FP_FMT "->crtc%u "
> >> DRM_RECT_FMT
> >> -            ", %4.4s ubwc %d\n", fb->base.id,
> >> DRM_RECT_FP_ARG(&state->src),
> >> -            crtc->base.id, DRM_RECT_ARG(&state->dst),
> >> -            (char *)&fmt->base.pixel_format, DPU_FORMAT_IS_UBWC(fmt));
> >> +    /* override for color fill */
> >> +    if (!fb && drm_plane_solid_fill_enabled(plane->state)) {
> >
> > And here too.
> >
> >> +        /* skip remaining processing on color fill */
> >> +        return;
> >> +    }
> >> +
> >> +    memset(&pipe_cfg, 0, sizeof(struct dpu_hw_pipe_cfg));
> >> +
> >> +    fmt = to_dpu_format(msm_framebuffer_format(fb));
> >> +    _dpu_plane_set_scanout(plane, pstate, &pipe_cfg, fb);
> >> +
> >> +    if (fb)
> >> +        DPU_DEBUG_PLANE(pdpu, "FB[%u] " DRM_RECT_FP_FMT "->crtc%u "
> >> DRM_RECT_FMT
> >> +                ", %4.4s ubwc %d\n", fb->base.id,
> >> DRM_RECT_FP_ARG(&state->src),
> >> +                crtc->base.id, DRM_RECT_ARG(&state->dst),
> >> +                (char *)&fmt->base.pixel_format,
> >> DPU_FORMAT_IS_UBWC(fmt));
> >>       pipe_cfg.src_rect = state->src;
> >> @@ -1155,12 +1177,6 @@ static void dpu_plane_sspp_atomic_update(struct
> >> drm_plane *plane)
> >>       pipe_cfg.dst_rect = state->dst;
> >> -    /* override for color fill */
> >> -    if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG) {
> >> -        /* skip remaining processing on color fill */
> >> -        return;
> >> -    }
> >> -
> >>       if (pdpu->pipe_hw->ops.setup_rects) {
> >>           pdpu->pipe_hw->ops.setup_rects(pdpu->pipe_hw,
> >>                   &pipe_cfg,
> >> @@ -1511,6 +1527,7 @@ struct drm_plane *dpu_plane_init(struct
> >> drm_device *dev,
> >>           DPU_ERROR("failed to install zpos property, rc = %d\n", ret);
> >>       drm_plane_create_alpha_property(plane);
> >> +    drm_plane_create_solid_fill_property(plane);
> >>       drm_plane_create_blend_mode_property(plane,
> >>               BIT(DRM_MODE_BLEND_PIXEL_NONE) |
> >>               BIT(DRM_MODE_BLEND_PREMULTI) |
> >
> > --
> > With best wishes
> > Dmitry
> >
>




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