From: Marek Vasut marex@denx.de
commit b059b7e0ec3208ff1e17cff6387d75a9fbab4e02 upstream.
Add regulator_is_equal() helper to compare whether two regulators are the same. This is useful for checking whether two separate regulators in a driver are actually the same supply.
Signed-off-by: Marek Vasut marex@denx.de Cc: Fabio Estevam festevam@gmail.com Cc: Igor Opaniuk igor.opaniuk@toradex.com Cc: Liam Girdwood lgirdwood@gmail.com Cc: Marcel Ziswiler marcel.ziswiler@toradex.com Cc: Mark Brown broonie@kernel.org Cc: Oleksandr Suvorov oleksandr.suvorov@toradex.com Link: https://lore.kernel.org/r/20191220164450.1395038-1-marex@denx.de Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/regulator/helpers.c | 14 ++++++++++++++ include/linux/regulator/consumer.h | 7 +++++++ 2 files changed, 21 insertions(+)
--- a/drivers/regulator/helpers.c +++ b/drivers/regulator/helpers.c @@ -13,6 +13,8 @@ #include <linux/regulator/driver.h> #include <linux/module.h>
+#include "internal.h" + /** * regulator_is_enabled_regmap - standard is_enabled() for regmap users * @@ -881,3 +883,15 @@ void regulator_bulk_set_supply_names(str consumers[i].supply = supply_names[i]; } EXPORT_SYMBOL_GPL(regulator_bulk_set_supply_names); + +/** + * regulator_is_equal - test whether two regulators are the same + * + * @reg1: first regulator to operate on + * @reg2: second regulator to operate on + */ +bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2) +{ + return reg1->rdev == reg2->rdev; +} +EXPORT_SYMBOL_GPL(regulator_is_equal); --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -287,6 +287,8 @@ void regulator_bulk_set_supply_names(str const char *const *supply_names, unsigned int num_supplies);
+bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2); + #else
/* @@ -593,6 +595,11 @@ regulator_bulk_set_supply_names(struct r { }
+static inline bool +regulator_is_equal(struct regulator *reg1, struct regulator *reg2); +{ + return false; +} #endif
static inline int regulator_set_voltage_triplet(struct regulator *regulator,