[RFC 6/8] regulator: core: Add regulator_is_bypass function
From: Leonard Crestez <hidden>
Date: 2017-03-22 17:29:24
Also in:
linux-devicetree, linux-pm, lkml
Subsystem:
the rest, voltage and current regulator framework · Maintainers:
Linus Torvalds, Liam Girdwood, Mark Brown
This is a simple kernel API to query the bypass state of a regulator. Signed-off-by: Leonard Crestez <redacted> --- drivers/regulator/core.c | 26 ++++++++++++++++++++++++++ include/linux/regulator/consumer.h | 1 + 2 files changed, 27 insertions(+)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 9d893aa..7d4f59e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c@@ -3554,6 +3554,32 @@ int regulator_allow_bypass(struct regulator *regulator, bool enable) EXPORT_SYMBOL_GPL(regulator_allow_bypass); /** + * regulator_is_bypass - Determine if the regulator is in bypass mode + * + * @regulator: Regulator to examine + * + * @return 0 or 1 for true/false or errno on failure + * + * Returns zero on a regulator without bypass support. + */ +int regulator_is_bypass(struct regulator *regulator) +{ + struct regulator_dev *rdev = regulator->rdev; + bool bypass; + int ret = 0; + + if (!rdev->desc->ops->get_bypass) + return 0; + + mutex_lock(&rdev->mutex); + ret = rdev->desc->ops->get_bypass(rdev, &bypass); + mutex_unlock(&rdev->mutex); + + return ret ? ret : !!bypass; +} +EXPORT_SYMBOL_GPL(regulator_is_bypass); + +/** * regulator_register_notifier - register regulator event notifier * @regulator: regulator source * @nb: notifier block
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index ea0fffa..ba78511 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h@@ -261,6 +261,7 @@ int regulator_get_error_flags(struct regulator *regulator, int regulator_set_load(struct regulator *regulator, int load_uA); int regulator_allow_bypass(struct regulator *regulator, bool allow); +int regulator_is_bypass(struct regulator *regulator); struct regmap *regulator_get_regmap(struct regulator *regulator); int regulator_get_hardware_vsel_register(struct regulator *regulator,
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2.7.4