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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-04-26 18:18:14 +0400
committerLiam Girdwood <lrg@slimlogic.co.uk>2010-05-25 13:16:01 +0400
commit0178f3e28e2166664916265c5d4922b1376b9fa1 (patch)
tree00dbd793ed75ad98e8d32a5798ab243c0f5b4185 /drivers/regulator
parent7e125f7b9cbfce4101191b8076d606c517a73066 (diff)
downloadlinux-0178f3e28e2166664916265c5d4922b1376b9fa1.tar.xz
regulator: Allow regulator-regulator supplies to be specified by name
When one regulator supplies another allow the relationship to be specified using names rather than struct regulators, in a similar manner to that allowed for consumer supplies. This allows static configuration at compile time, reducing the need for dynamic init code. Also change the references to LINE supply to be system supply since line is sometimes used for actual supplies and therefore potentially confusing. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/core.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 51cf2bb37438..eb112d961515 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2328,7 +2328,37 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
goto scrub;
/* set supply regulator if it exists */
+ if (init_data->supply_regulator && init_data->supply_regulator_dev) {
+ dev_err(dev,
+ "Supply regulator specified by both name and dev\n");
+ goto scrub;
+ }
+
+ if (init_data->supply_regulator) {
+ struct regulator_dev *r;
+ int found = 0;
+
+ list_for_each_entry(r, &regulator_list, list) {
+ if (strcmp(rdev_get_name(r),
+ init_data->supply_regulator) == 0) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found) {
+ dev_err(dev, "Failed to find supply %s\n",
+ init_data->supply_regulator);
+ goto scrub;
+ }
+
+ ret = set_supply(rdev, r);
+ if (ret < 0)
+ goto scrub;
+ }
+
if (init_data->supply_regulator_dev) {
+ dev_warn(dev, "Uses supply_regulator_dev instead of regulator_supply\n");
ret = set_supply(rdev,
dev_get_drvdata(init_data->supply_regulator_dev));
if (ret < 0)