Hello Keith,
+ +static void vs_plane_atomic_update(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, + plane); + unsigned char i, num_planes; + struct drm_framebuffer *fb; + struct vs_plane *vs_plane = to_vs_plane(plane); + //struct drm_plane_state *state = plane->state; + struct vs_crtc *vs_crtc = to_vs_crtc(new_state->crtc); + struct vs_plane_state *plane_state = to_vs_plane_state(new_state); + //struct drm_format_name_buf *name = &plane_state->status.format_name; + + if (!new_state->fb || !new_state->crtc) + return; + + fb = new_state->fb; + + num_planes = vs_get_plane_number(fb); + + for (i = 0; i < num_planes; i++) { + struct vs_gem_object *vs_obj; + + vs_obj = vs_fb_get_gem_obj(fb, i); + vs_plane->dma_addr[i] = vs_obj->iova + fb->offsets[i];
There is a dcache flush operation here in downstream driver. Is that a cache coherence problem?
Best regards, Shengyu
+ } + + plane_state->status.src = drm_plane_state_src(new_state); + plane_state->status.dest = drm_plane_state_dest(new_state); + + vs_plane->funcs->update(vs_crtc->dev, vs_plane, plane, state); +}