lineage-rockchip/android_external_minigbm
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minigbm: Add bo_get_plane_fd backend hook

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Non-DRM drivers shouldn't rely on handles and DRM API.
Add hook to allow drivers create custom implementation.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Change-Id: I458dae38f80697184070019606b125992a9aa01d
This commit is contained in:
Roman Stratiienko 2021-06-23 17:11:10 +03:00 • committed by Brendan Szymanski
parent 37858e5143
commit 529b476a9e
2 changed files with 6 additions and 0 deletions
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5
drv.c
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@ -692,6 +692,11 @@ int drv_bo_get_plane_fd(struct bo *bo, size_t plane)
if (bo->is_test_buffer)
return -EINVAL;
if (bo->drv->backend->bo_get_plane_fd) {
fd = bo->drv->backend->bo_get_plane_fd(bo, plane);
return fd;
}
ret = drmPrimeHandleToFD(bo->drv->fd, bo->handle.u32, DRM_CLOEXEC | DRM_RDWR, &fd);
// Older DRM implementations blocked DRM_RDWR, but gave a read/write mapping anyways

1
drv_priv.h
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@ -97,6 +97,7 @@ struct backend {
int (*bo_unmap)(struct bo *bo, struct vma *vma);
int (*bo_invalidate)(struct bo *bo, struct mapping *mapping);
int (*bo_flush)(struct bo *bo, struct mapping *mapping);
int (*bo_get_plane_fd)(struct bo *bo, size_t plane);
void (*resolve_format_and_use_flags)(struct driver *drv, uint32_t format,
uint64_t use_flags, uint32_t *out_format,
uint64_t *out_use_flags);