Patchwork [02/25] dt: add helpers for 2, 3 and 4 cell adds

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Submitter Alexander Graf
Date May 30, 2012, 11 a.m.
Message ID <1338375646-15064-3-git-send-email-agraf@suse.de>
Download mbox | patch
Permalink /patch/161956/
State New
Headers show

Comments

Alexander Graf - May 30, 2012, 11 a.m.
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 a bit, create helpers for the most common array
sizes, namely 2, 3 and 4 cells wide properties.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 device_tree.c |   30 ++++++++++++++++++++++++++++++
 device_tree.h |    9 +++++++++
 2 files changed, 39 insertions(+), 0 deletions(-)

Patch

diff --git a/device_tree.c b/device_tree.c
index 94a239e..b1dff4f 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -117,6 +117,36 @@  int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
     return r;
 }
 
+int qemu_devtree_setprop_cell2(void *fdt, const char *node_path,
+                               const char *property, uint32_t val,
+                               uint32_t val2)
+{
+    uint32_t tmp[] = { cpu_to_be32(val),
+                       cpu_to_be32(val2) };
+    return qemu_devtree_setprop(fdt, node_path, property, tmp, sizeof(tmp));
+}
+
+int qemu_devtree_setprop_cell3(void *fdt, const char *node_path,
+                               const char *property, uint32_t val,
+                               uint32_t val2, uint32_t val3)
+{
+    uint32_t tmp[] = { cpu_to_be32(val),
+                       cpu_to_be32(val2),
+                       cpu_to_be32(val3) };
+    return qemu_devtree_setprop(fdt, node_path, property, tmp, sizeof(tmp));
+}
+
+int qemu_devtree_setprop_cell4(void *fdt, const char *node_path,
+                               const char *property, uint32_t val,
+                               uint32_t val2, uint32_t val3, uint32_t val4)
+{
+    uint32_t tmp[] = { cpu_to_be32(val),
+                       cpu_to_be32(val2),
+                       cpu_to_be32(val3),
+                       cpu_to_be32(val4) };
+    return qemu_devtree_setprop(fdt, node_path, property, tmp, sizeof(tmp));
+}
+
 int qemu_devtree_setprop_string(void *fdt, const char *node_path,
                                 const char *property, const char *string)
 {
diff --git a/device_tree.h b/device_tree.h
index 4378685..9db7f86 100644
--- a/device_tree.h
+++ b/device_tree.h
@@ -20,6 +20,15 @@  int qemu_devtree_setprop(void *fdt, const char *node_path,
                          const char *property, void *val_array, int size);
 int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
                               const char *property, uint32_t val);
+int qemu_devtree_setprop_cell2(void *fdt, const char *node_path,
+                               const char *property, uint32_t val,
+                               uint32_t val2);
+int qemu_devtree_setprop_cell3(void *fdt, const char *node_path,
+                               const char *property, uint32_t val,
+                               uint32_t val2, uint32_t val3);
+int qemu_devtree_setprop_cell4(void *fdt, const char *node_path,
+                               const char *property, uint32_t val,
+                               uint32_t val2, uint32_t val3, uint32_t val4);
 int qemu_devtree_setprop_string(void *fdt, const char *node_path,
                                 const char *property, const char *string);
 int qemu_devtree_nop_node(void *fdt, const char *node_path);