From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:55595) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sh3tm-0001VT-Gc for qemu-devel@nongnu.org; Tue, 19 Jun 2012 15:15:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sh3th-0004af-SE for qemu-devel@nongnu.org; Tue, 19 Jun 2012 15:15:34 -0400 From: Alexander Graf Date: Tue, 19 Jun 2012 21:14:58 +0200 Message-Id: <1340133324-352-6-git-send-email-agraf@suse.de> In-Reply-To: <1340133324-352-1-git-send-email-agraf@suse.de> References: <1340133324-352-1-git-send-email-agraf@suse.de> Subject: [Qemu-devel] [PATCH 05/31] dt: add helper for phandle enumeration List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel qemu-devel Cc: qemu-ppc Mailing List This patch adds a helper to search for a node's phandle by its path. This is especially useful when the phandle is part of an array, not just a single cell in which case qemu_devtree_setprop_phandle would be the easy choice. Signed-off-by: Alexander Graf --- device_tree.c | 16 +++++++++++++++- device_tree.h | 1 + 2 files changed, 16 insertions(+), 1 deletions(-) diff --git a/device_tree.c b/device_tree.c index 967c97a..2f127b7 100644 --- a/device_tree.c +++ b/device_tree.c @@ -132,11 +132,25 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path, return r; } +uint32_t qemu_devtree_get_phandle(void *fdt, const char *path) +{ + uint32_t r; + + r = fdt_get_phandle(fdt, findnode_nofail(fdt, path)); + if (r <= 0) { + fprintf(stderr, "%s: Couldn't get phandle for %s: %s\n", __func__, + path, fdt_strerror(r)); + exit(1); + } + + return r; +} + int qemu_devtree_setprop_phandle(void *fdt, const char *node_path, const char *property, const char *target_node_path) { - uint32_t phandle = fdt_get_phandle(fdt, findnode_nofail(fdt, target_node_path)); + uint32_t phandle = qemu_devtree_get_phandle(fdt, target_node_path); return qemu_devtree_setprop_cell(fdt, node_path, property, phandle); } diff --git a/device_tree.h b/device_tree.h index 754bd2b..36fc9db 100644 --- a/device_tree.h +++ b/device_tree.h @@ -25,6 +25,7 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path, int qemu_devtree_setprop_phandle(void *fdt, const char *node_path, const char *property, const char *target_node_path); +uint32_t qemu_devtree_get_phandle(void *fdt, const char *path); int qemu_devtree_nop_node(void *fdt, const char *node_path); int qemu_devtree_add_subnode(void *fdt, const char *name); -- 1.6.0.2