[PATCH 11/11] drm/vkms: Use offset-adjusted shadow-plane mappings and output

[Thomas Zimmermann]

For framebuffers with non-zero offset fields, shadow-plane helpers
provide a pointer to the first byte of the contained data. Use it in
vkms.

Also provide use the offset-adjusted data address for the writeback
job's output buffers. Output framebuffers with non-zero offsets now
have their content written to the correct location.

Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
---
 drivers/gpu/drm/vkms/vkms_composer.c  | 2 +-
 drivers/gpu/drm/vkms/vkms_drv.h       | 1 +
 drivers/gpu/drm/vkms/vkms_plane.c     | 2 +-
 drivers/gpu/drm/vkms/vkms_writeback.c | 2 +-
 4 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_composer.c 
b/drivers/gpu/drm/vkms/vkms_composer.c
index 49f109c3a2b3..9e8204be9a14 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -257,7 +257,7 @@ void vkms_composer_worker(struct work_struct *work)
                return;
 
        if (wb_pending)
-               vaddr_out = crtc_state->active_writeback->map[0].vaddr;
+               vaddr_out = crtc_state->active_writeback->data[0].vaddr;
 
        ret = compose_active_planes(&vaddr_out, primary_composer,
                                    crtc_state);
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 8bc9e3f52e1f..d48c23d40ce5 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -22,6 +22,7 @@
 
 struct vkms_writeback_job {
        struct dma_buf_map map[DRM_FORMAT_MAX_PLANES];
+       struct dma_buf_map data[DRM_FORMAT_MAX_PLANES];
 };
 
 struct vkms_composer {
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c 
b/drivers/gpu/drm/vkms/vkms_plane.c
index 8a56fbf572b0..32409e15244b 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -111,7 +111,7 @@ static void vkms_plane_atomic_update(struct drm_plane 
*plane,
        memcpy(&composer->src, &new_state->src, sizeof(struct drm_rect));
        memcpy(&composer->dst, &new_state->dst, sizeof(struct drm_rect));
        memcpy(&composer->fb, fb, sizeof(struct drm_framebuffer));
-       memcpy(&composer->map, &shadow_plane_state->map, sizeof(composer->map));
+       memcpy(&composer->map, &shadow_plane_state->data, 
sizeof(composer->map));
        drm_framebuffer_get(&composer->fb);
        composer->offset = fb->offsets[0];
        composer->pitch = fb->pitches[0];
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c 
b/drivers/gpu/drm/vkms/vkms_writeback.c
index 3a8e2ed93e7c..8694227f555f 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -75,7 +75,7 @@ static int vkms_wb_prepare_job(struct drm_writeback_connector 
*wb_connector,
        if (!vkmsjob)
                return -ENOMEM;
 
-       ret = drm_gem_fb_vmap(job->fb, vkmsjob->map, NULL);
+       ret = drm_gem_fb_vmap(job->fb, vkmsjob->map, vkmsjob->data);
        if (ret) {
                DRM_ERROR("vmap failed: %d\n", ret);
                goto err_kfree;
-- 
2.32.0