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dm: core: Add ofnode_for_each_subnode()

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Add a convenience macro to iterate over subnodes of a node. Make use of
this where appropriate in the code.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-08-05 15:45:54 -06:00
parent 8639f69a61
commit 3991f42ed2
5 changed files with 33 additions and 15 deletions
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8
arch/arm/mach-tegra/xusb-padctl-common.c
View File

@ -224,9 +224,7 @@ tegra_xusb_padctl_config_parse_dt(struct tegra_xusb_padctl *padctl,
config->name = ofnode_get_name(node);
for (subnode = ofnode_first_subnode(node);
ofnode_valid(subnode);
subnode = ofnode_next_subnode(subnode)) {
ofnode_for_each_subnode(subnode, node) {
struct tegra_xusb_padctl_group *group;
int err;
@ -256,9 +254,7 @@ static int tegra_xusb_padctl_parse_dt(struct tegra_xusb_padctl *padctl,
return err;
}
for (subnode = ofnode_first_subnode(node);
ofnode_valid(subnode);
subnode = ofnode_next_subnode(subnode)) {
ofnode_for_each_subnode(subnode, node) {
struct tegra_xusb_padctl_config *config = &padctl->config;
debug("%s: subnode=%s\n", __func__, ofnode_get_name(subnode));

9
drivers/core/ofnode.c
View File

@ -390,10 +390,11 @@ int ofnode_decode_display_timing(ofnode parent, int index,
if (!ofnode_valid(timings))
return -EINVAL;
for (i = 0, node = ofnode_first_subnode(timings);
ofnode_valid(node) && i != index;
node = ofnode_first_subnode(node))
i++;
i = 0;
ofnode_for_each_subnode(node, timings) {
if (i++ == index)
break;
}
if (!ofnode_valid(node))
return -EINVAL;

3
drivers/misc/cros_ec.c
View File

@ -1038,8 +1038,7 @@ int cros_ec_decode_ec_flash(struct udevice *dev, struct fdt_cros_ec *config)
config->flash_erase_value = ofnode_read_s32_default(flash_node,
"erase-value", -1);
for (node = ofnode_first_subnode(flash_node); ofnode_valid(node);
node = ofnode_next_subnode(node)) {
ofnode_for_each_subnode(node, flash_node) {
const char *name = ofnode_get_name(node);
enum ec_flash_region region;

4
drivers/power/pmic/pmic-uclass.c
View File

@ -34,9 +34,7 @@ int pmic_bind_children(struct udevice *pmic, ofnode parent,
debug("%s for '%s' at node offset: %d\n", __func__, pmic->name,
dev_of_offset(pmic));
for (node = ofnode_first_subnode(parent);
ofnode_valid(node);
node = ofnode_next_subnode(node)) {
ofnode_for_each_subnode(node, parent) {
node_name = ofnode_get_name(node);
debug("* Found child node: '%s'\n", node_name);

24
include/dm/ofnode.h
View File

@ -628,4 +628,28 @@ int ofnode_read_resource(ofnode node, uint index, struct resource *res);
int ofnode_read_resource_byname(ofnode node, const char *name,
struct resource *res);
/**
* ofnode_for_each_subnode() - iterate over all subnodes of a parent
*
* @node: child node (ofnode, lvalue)
* @parent: parent node (ofnode)
*
* This is a wrapper around a for loop and is used like so:
*
* ofnode node;
*
* ofnode_for_each_subnode(node, parent) {
* Use node
* ...
* }
*
* Note that this is implemented as a macro and @node is used as
* iterator in the loop. The parent variable can be a constant or even a
* literal.
*/
#define ofnode_for_each_subnode(node, parent) \
for (node = ofnode_first_subnode(parent); \
ofnode_valid(node); \
node = ofnode_next_subnode(node))
#endif