From 0cd9a65497b91722f684cf176c42e9cc67dcdcb3 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Mon, 7 Mar 2022 15:56:19 +0800
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Subject: [PATCH 57/74] backend-drm: Support getting drm fb from dmabuf
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directly
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Try to import dmabuf to drm fb directly when GBM fd-import not working.
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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libweston/backend-drm/fb.c | 46 ++++++++++++++++++++++++--------------
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1 file changed, 29 insertions(+), 17 deletions(-)
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diff --git a/libweston/backend-drm/fb.c b/libweston/backend-drm/fb.c
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index 3790a73..aba17bf 100644
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--- a/libweston/backend-drm/fb.c
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+++ b/libweston/backend-drm/fb.c
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@@ -224,10 +224,18 @@ drm_fb_destroy_gbm(struct gbm_bo *bo, void *data)
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static void
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drm_fb_destroy_dmabuf(struct drm_fb *fb)
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{
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- /* We deliberately do not close the GEM handles here; GBM manages
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- * their lifetime through the BO. */
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- if (fb->bo)
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+ if (fb->bo) {
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+ /* We deliberately do not close the GEM handles here; GBM manages
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+ * their lifetime through the BO. */
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gbm_bo_destroy(fb->bo);
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+ } else {
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+ int i;
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+ for (i = 0; i < fb->num_planes; i++) {
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+ struct drm_gem_close arg = { fb->handles[i], };
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+ drmIoctl(fb->fd, DRM_IOCTL_GEM_CLOSE, &arg);
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+ }
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+ }
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+
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drm_fb_destroy(fb);
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}
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@@ -293,13 +301,6 @@ drm_fb_get_from_dmabuf(struct linux_dmabuf_buffer *dmabuf,
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fb->bo = gbm_bo_import(backend->gbm, GBM_BO_IMPORT_FD_MODIFIER,
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&import_mod, GBM_BO_USE_SCANOUT);
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- if (!fb->bo) {
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- if (try_view_on_plane_failure_reasons)
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- *try_view_on_plane_failure_reasons |=
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- FAILURE_REASONS_GBM_BO_IMPORT_FAILED;
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- goto err_free;
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- }
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-
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fb->width = dmabuf->attributes.width;
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fb->height = dmabuf->attributes.height;
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fb->modifier = dmabuf->attributes.modifier[0];
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@@ -328,13 +329,24 @@ drm_fb_get_from_dmabuf(struct linux_dmabuf_buffer *dmabuf,
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}
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fb->num_planes = dmabuf->attributes.n_planes;
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- for (i = 0; i < dmabuf->attributes.n_planes; i++) {
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- union gbm_bo_handle handle;
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-
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- handle = gbm_bo_get_handle_for_plane(fb->bo, i);
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- if (handle.s32 == -1)
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- goto err_free;
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- fb->handles[i] = handle.u32;
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+ if (fb->bo) {
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+ for (i = 0; i < fb->num_planes; i++) {
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+ union gbm_bo_handle handle;
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+
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+ handle = gbm_bo_get_handle_for_plane(fb->bo, i);
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+ if (handle.s32 == -1)
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+ goto err_free;
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+ fb->handles[i] = handle.u32;
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+ }
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+ } else {
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+ for (i = 0; i < fb->num_planes; i++) {
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+ if (drmPrimeFDToHandle(fb->fd, import_mod.fds[i],
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+ &fb->handles[i])) {
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+ *try_view_on_plane_failure_reasons |=
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+ FAILURE_REASONS_GBM_BO_IMPORT_FAILED;
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+ goto err_free;
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+ }
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+ }
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}
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if (drm_fb_addfb(backend, fb) != 0) {
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--
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2.20.1
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