hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

regulator: dt: regulator match by regulator-compatible 

Match the device's regulators with the property of
"regulator-compatible" of each regulator node.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan 2012-06-20 17:53:06 +05:30 committed by Mark Brown
parent da26848afa
commit 5260cd2bc9
1 changed files with 32 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/regulator/of_regulator.c
View File

@ -92,15 +92,17 @@ struct regulator_init_data *of_get_regulator_init_data(struct device *dev,
EXPORT_SYMBOL_GPL(of_get_regulator_init_data);
/**
* of_regulator_match - extract regulator init data
* of_regulator_match - extract regulator init data when node
* property "regulator-compatible" matches with the regulator name.
* @dev: device requesting the data
* @node: parent device node of the regulators
* @matches: match table for the regulators
* @num_matches: number of entries in match table
*
* This function uses a match table specified by the regulator driver and
* looks up the corresponding init data in the device tree. Note that the
* match table is modified in place.
* looks up the corresponding init data in the device tree if
* regulator-compatible matches. Note that the match table is modified
* in place.
*
* Returns the number of matches found or a negative error code on failure.
*/
@ -110,27 +112,40 @@ int of_regulator_match(struct device *dev, struct device_node *node,
{
unsigned int count = 0;
unsigned int i;
const char *regulator_comp;
struct device_node *child;
if (!dev || !node)
return -EINVAL;
for_each_child_of_node(node, child) {
regulator_comp = of_get_property(child,
"regulator-compatible", NULL);
if (!regulator_comp) {
dev_err(dev, "regulator-compatible is missing for node %s\n",
child->name);
continue;
}
for (i = 0; i < num_matches; i++) {
struct of_regulator_match *match = &matches[i];
struct device_node *child;
child = of_find_node_by_name(node, match->name);
if (!child)
if (match->of_node)
continue;
match->init_data = of_get_regulator_init_data(dev, child);
if (strcmp(match->name, regulator_comp))
continue;
match->init_data =
of_get_regulator_init_data(dev, child);
if (!match->init_data) {
dev_err(dev, "failed to parse DT for regulator %s\n",
dev_err(dev,
"failed to parse DT for regulator %s\n",
child->name);
return -EINVAL;
}
match->of_node = child;
count++;
break;
}
}
return count;