diff mbox series

[1/5] regulator: core: add callback to perform runtime init

Message ID 20240920-pmbus-wp-v1-1-d679ef31c483@baylibre.com (mailing list archive)
State Handled Elsewhere
Headers show
Series hwmon: (pmbus/core) support write protected pmbus regulators | expand

Commit Message

Jerome Brunet Sept. 20, 2024, 4:47 p.m. UTC 
Provide an initialisation callback to handle runtime parameters.
The idea is similar to the regulator_init() callback, but it provides
regulator specific structures, instead of just the driver specific data.

As an example, this allows the driver to amend the regulator constraints
based on runtime parameters if necessary.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
 drivers/regulator/core.c         | 6 ++++++
 include/linux/regulator/driver.h | 2 ++
 2 files changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 1179766811f5..4c90ab5ad876 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -5747,6 +5747,12 @@  regulator_register(struct device *dev,
 		goto wash;
 	}
 
+	if (regulator_desc->init_cb) {
+		ret = regulator_desc->init_cb(rdev, config);
+		if (ret < 0)
+			goto wash;
+	}
+
 	if ((rdev->supply_name && !rdev->supply) &&
 		(rdev->constraints->always_on ||
 		 rdev->constraints->boot_on)) {
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index f230a472ccd3..d2f4427504f0 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -365,6 +365,8 @@  struct regulator_desc {
 	int (*of_parse_cb)(struct device_node *,
 			    const struct regulator_desc *,
 			    struct regulator_config *);
+	int (*init_cb)(struct regulator_dev *,
+		       struct regulator_config *);
 	int id;
 	unsigned int continuous_voltage_range:1;
 	unsigned n_voltages;