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authorAhmad Fatoum <a.fatoum@pengutronix.de>2022-07-24 21:00:03 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2022-08-08 16:22:06 +0200
commitd353ffd5c6e6d4cee6eee72726125c965a0814f0 (patch)
tree23b52bf3c928923c071d78ed41d4dbde4e190752
parent7a06cb799080894e614125802f79b6f5ba1022b0 (diff)
downloadbarebox-d353ffd5c6e6d4cee6eee72726125c965a0814f0.tar.gz
barebox-d353ffd5c6e6d4cee6eee72726125c965a0814f0.tar.xz
regulator: consult min_uv, max_uv for regulator_get_voltage
Fixed regulators currently always end up in the return -EINVAL else branch. In Linux, the fixed regulator driver parses the DT and will populate fixed_uV if min_uv and max_uv are equal. For barebox, it's easier to do this in the core, but the result is the same: We now can call regulator_get_voltage for fixed regulators. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220724190006.2160802-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--drivers/regulator/core.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 29a335f502..74324772ed 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -569,13 +569,15 @@ EXPORT_SYMBOL_GPL(regulator_bulk_free);
int regulator_get_voltage(struct regulator *regulator)
{
+ struct regulator_internal *ri;
struct regulator_dev *rdev;
int sel, ret;
if (!regulator)
return -EINVAL;
- rdev = regulator->ri->rdev;
+ ri = regulator->ri;
+ rdev = ri->rdev;
if (rdev->desc->ops->get_voltage_sel) {
sel = rdev->desc->ops->get_voltage_sel(rdev);
@@ -588,6 +590,8 @@ int regulator_get_voltage(struct regulator *regulator)
ret = rdev->desc->ops->list_voltage(rdev, 0);
} else if (rdev->desc->fixed_uV && (rdev->desc->n_voltages == 1)) {
ret = rdev->desc->fixed_uV;
+ } else if (ri->min_uv && ri->min_uv == ri->max_uv) {
+ ret = ri->min_uv;
} else {
return -EINVAL;
}