[PATCH] regulator: provide rdev_get_regmap()

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Provide a helper allowing to access regulator's regmap.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
Hi Mark,

please consider adding this helper to regulator core. I used it in
my max77650 driver and it nicely simplified the code, since there's
no more need for a driver-wide data structure as callbacks only
need to access the regulator description and register offsets (stored
in global constant regulator description structures).

 drivers/regulator/core.c         | 6 ++++++
 include/linux/regulator/driver.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index b9d7b45c7295..17d496f267b6 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -5251,6 +5251,12 @@ struct device *rdev_get_dev(struct regulator_dev *rdev)
 }
 EXPORT_SYMBOL_GPL(rdev_get_dev);
 
+struct regmap *rdev_get_regmap(struct regulator_dev *rdev)
+{
+	return rdev->regmap;
+}
+EXPORT_SYMBOL_GPL(rdev_get_regmap);
+
 void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data)
 {
 	return reg_init_data->driver_data;
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 389bcaf7900f..795b38a06b6c 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -503,6 +503,7 @@ int regulator_notifier_call_chain(struct regulator_dev *rdev,
 
 void *rdev_get_drvdata(struct regulator_dev *rdev);
 struct device *rdev_get_dev(struct regulator_dev *rdev);
+struct regmap *rdev_get_regmap(struct regulator_dev *rdev);
 int rdev_get_id(struct regulator_dev *rdev);
 
 int regulator_mode_to_status(unsigned int);
-- 
2.19.1