From 7ae2291e8e0f34ac520044c8af0437a701e1c967 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 17 May 2012 12:47:57 +0200 Subject: [PATCH] dt: add helpers for multi-cell adds 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 file changed, 12 insertions(+) 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__ */ -- 2.7.4