On Wed, Feb 21, 2018 at 2:43 PM, Sean Paul <seanp...@chromium.org> wrote:
> It's never set to true, so none of this code is ever run.
>
> Signed-off-by: Sean Paul <seanp...@chromium.org>

I guess if it was ever set to true, that got ripped out with the
secure buffer support.  And when that ever gets re-introduced, I hope
we can avoid the need for transitions, since it does seem to introduce
a lot more complexity.

Reviewed-by: Rob Clark <robdcl...@gmail.com>

> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 65 -----------------------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h |  2 -
>  2 files changed, 67 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c 
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> index 9b684e94e8aa..cbda7dbf8725 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> @@ -894,22 +894,6 @@ static inline void _dpu_plane_set_scanout(struct 
> drm_plane *plane,
>                 return;
>         }
>
> -       /*
> -        * framebuffer prepare is deferred for prepare_fb calls that
> -        * happen during the transition from secure to non-secure.
> -        * Handle the prepare at this point for such cases. This can be
> -        * expected for one or two frames during the transition.
> -        */
> -       if (aspace && pstate->defer_prepare_fb) {
> -               ret = msm_framebuffer_prepare(fb, pstate->aspace);
> -               if (ret) {
> -                       DPU_ERROR_PLANE(pdpu,
> -                               "failed to prepare framebuffer %d\n", ret);
> -                       return;
> -               }
> -               pstate->defer_prepare_fb = false;
> -       }
> -
>         ret = dpu_format_populate_layout(aspace, fb, &pipe_cfg->layout);
>         if (ret == -EAGAIN)
>                 DPU_DEBUG_PLANE(pdpu, "not updating same src addrs\n");
> @@ -2103,13 +2087,6 @@ static int dpu_plane_rot_prepare_fb(struct drm_plane 
> *plane,
>                 }
>         }
>
> -       if (new_pstate->defer_prepare_fb) {
> -               DPU_DEBUG(
> -                   "plane%d, domain not attached, prepare fb handled 
> later\n",
> -                   plane->base.id);
> -               return 0;
> -       }
> -
>         /* prepare rotator input buffer */
>         ret = msm_framebuffer_prepare(new_state->fb, new_pstate->aspace);
>         if (ret) {
> @@ -2401,34 +2378,6 @@ static void dpu_plane_rot_atomic_update(struct 
> drm_plane *plane,
>         if (!rstate->out_sbuf || !rstate->rot_hw)
>                 return;
>
> -       /*
> -        * framebuffer prepare is deferred for prepare_fb calls that
> -        * happen during the transition from secure to non-secure.
> -        * Handle the prepare at this point for rotator in such cases.
> -        * This can be expected for one or two frames during the transition.
> -        */
> -       if (pstate->aspace && pstate->defer_prepare_fb) {
> -               /* prepare rotator input buffer */
> -               ret = msm_framebuffer_prepare(state->fb, pstate->aspace);
> -               if (ret) {
> -                       DPU_ERROR("p%d failed to prepare input fb %d\n",
> -                                                       plane->base.id, ret);
> -                       return;
> -               }
> -
> -               /* prepare rotator output buffer */
> -               if (dpu_plane_enabled(state) && rstate->out_fb) {
> -                       ret = msm_framebuffer_prepare(rstate->out_fb,
> -                                               pstate->aspace);
> -                       if (ret) {
> -                               DPU_ERROR(
> -                                 "p%d failed to prepare inline fb %d\n",
> -                                 plane->base.id, ret);
> -                               goto error_prepare_output_buffer;
> -                       }
> -               }
> -       }
> -
>         dpu_plane_rot_submit_command(plane, state, DPU_HW_ROT_CMD_COMMIT);
>
>         return;
> @@ -2796,26 +2745,12 @@ static int dpu_plane_prepare_fb(struct drm_plane 
> *plane,
>         /* cache aspace */
>         pstate->aspace = aspace;
>
> -       /*
> -        * when transitioning from secure to non-secure,
> -        * plane->prepare_fb happens before the commit. In such case,
> -        * defer the prepare_fb and handled it late, during the commit
> -        * after attaching the domains as part of the transition
> -        */
> -       pstate->defer_prepare_fb = false;
> -
>         ret = dpu_plane_rot_prepare_fb(plane, new_state);
>         if (ret) {
>                 DPU_ERROR("failed to prepare rot framebuffer\n");
>                 return ret;
>         }
>
> -       if (pstate->defer_prepare_fb) {
> -               DPU_DEBUG_PLANE(pdpu,
> -                   "domain not attached, prepare_fb handled later\n");
> -               return 0;
> -       }
> -
>         new_rstate = &to_dpu_plane_state(new_state)->rot;
>
>         if (pstate->aspace) {
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h 
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
> index 8c49412d460d..717dfe05c6ee 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
> @@ -129,7 +129,6 @@ enum dpu_plane_sclcheck_state {
>   * @multirect_index: index of the rectangle of SSPP
>   * @multirect_mode: parallel or time multiplex multirect mode
>   * @pending:   whether the current update is still pending
> - * @defer_prepare_fb:  indicate if prepare_fb call was deferred
>   * @scaler3_cfg: configuration data for scaler3
>   * @pixel_ext: configuration data for pixel extensions
>   * @scaler_check_state: indicates status of user provided pixel extension 
> data
> @@ -147,7 +146,6 @@ struct dpu_plane_state {
>         uint32_t multirect_index;
>         uint32_t multirect_mode;
>         bool pending;
> -       bool defer_prepare_fb;
>
>         /* scaler configuration */
>         struct dpu_hw_scaler3_cfg scaler3_cfg;
> --
> 2.16.1.291.g4437f3f132-goog
>
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