From patchwork Tue Jun 19 19:14:55 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [02/31] dt: add helpers for multi-cell adds Date: Tue, 19 Jun 2012 09:14:55 -0000 From: Alexander Graf X-Patchwork-Id: 165820 Message-Id: <1340133324-352-3-git-send-email-agraf@suse.de> To: qemu-devel qemu-devel Cc: qemu-ppc Mailing List We have device tree helpers that allow us to create single cell (u32) wide properties. However, when creating properties that contain an array of cells, we need to jump through hoops, manually passing in an array with converted endianness. To ease the pain of this, create a generic macro helper that allows us to pass the cells as arguments. Signed-off-by: Alexander Graf Reviewed-by: Peter Crosthwaite --- device_tree.h | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/device_tree.h b/device_tree.h index 4378685..1e671e2 100644 --- a/device_tree.h +++ b/device_tree.h @@ -25,4 +25,16 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path, int qemu_devtree_nop_node(void *fdt, const char *node_path); int qemu_devtree_add_subnode(void *fdt, const char *name); +#define qemu_devtree_setprop_cells(fdt, node_path, property, ...) \ + do { \ + uint32_t qdt_tmp[] = { __VA_ARGS__ }; \ + int i; \ + \ + for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) { \ + qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]); \ + } \ + qemu_devtree_setprop(fdt, node_path, property, qdt_tmp, \ + sizeof(qdt_tmp)); \ + } while (0) + #endif /* __DEVICE_TREE_H__ */