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Date: Mon, 31 Oct 2022 16:37:02 -0700
From: Zev Weiss <zev@...ilderbeest.net>
To: Mark Brown <broonie@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>
Cc: Zev Weiss <zev@...ilderbeest.net>, linux-kernel@...r.kernel.org,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
devicetree@...r.kernel.org,
Naresh Solanki <naresh.solanki@...ements.com>,
Patrick Rudolph <patrick.rudolph@...ements.com>,
Laxman Dewangan <ldewangan@...dia.com>,
openbmc@...ts.ozlabs.org
Subject: [PATCH v2 1/3] regulator: devres: Add devm_regulator_bulk_get_exclusive()
We had an exclusive variant of the devm_regulator_get() API, but no
corresponding variant for the bulk API; let's add one now. We add a
generalized version of the existing regulator_bulk_get() function that
additionally takes a get_type parameter and redefine
regulator_bulk_get() in terms of it, then do similarly with
devm_regulator_bulk_get(), and finally add the new
devm_regulator_bulk_get_exclusive().
Signed-off-by: Zev Weiss <zev@...ilderbeest.net>
---
drivers/regulator/core.c | 42 +++++++++++--------
drivers/regulator/devres.c | 66 ++++++++++++++++++++++--------
drivers/regulator/internal.h | 2 +
include/linux/regulator/consumer.h | 2 +
4 files changed, 76 insertions(+), 36 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index bcccad8f7516..704f91720dfe 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -4778,22 +4778,8 @@ static int _notifier_call_chain(struct regulator_dev *rdev,
return blocking_notifier_call_chain(&rdev->notifier, event, data);
}
-/**
- * regulator_bulk_get - get multiple regulator consumers
- *
- * @dev: Device to supply
- * @num_consumers: Number of consumers to register
- * @consumers: Configuration of consumers; clients are stored here.
- *
- * @return 0 on success, an errno on failure.
- *
- * This helper function allows drivers to get several regulator
- * consumers in one operation. If any of the regulators cannot be
- * acquired then any regulators that were allocated will be freed
- * before returning to the caller.
- */
-int regulator_bulk_get(struct device *dev, int num_consumers,
- struct regulator_bulk_data *consumers)
+int _regulator_bulk_get(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers, enum regulator_get_type get_type)
{
int i;
int ret;
@@ -4802,8 +4788,8 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
consumers[i].consumer = NULL;
for (i = 0; i < num_consumers; i++) {
- consumers[i].consumer = regulator_get(dev,
- consumers[i].supply);
+ consumers[i].consumer = _regulator_get(dev,
+ consumers[i].supply, get_type);
if (IS_ERR(consumers[i].consumer)) {
ret = dev_err_probe(dev, PTR_ERR(consumers[i].consumer),
"Failed to get supply '%s'",
@@ -4830,6 +4816,26 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
return ret;
}
+
+/**
+ * regulator_bulk_get - get multiple regulator consumers
+ *
+ * @dev: Device to supply
+ * @num_consumers: Number of consumers to register
+ * @consumers: Configuration of consumers; clients are stored here.
+ *
+ * @return 0 on success, an errno on failure.
+ *
+ * This helper function allows drivers to get several regulator
+ * consumers in one operation. If any of the regulators cannot be
+ * acquired then any regulators that were allocated will be freed
+ * before returning to the caller.
+ */
+int regulator_bulk_get(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers)
+{
+ return _regulator_bulk_get(dev, num_consumers, consumers, NORMAL_GET);
+}
EXPORT_SYMBOL_GPL(regulator_bulk_get);
static void regulator_bulk_enable_async(void *data, async_cookie_t cookie)
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index 3265e75e97ab..fec0398d98b0 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -186,23 +186,9 @@ static void devm_regulator_bulk_release(struct device *dev, void *res)
regulator_bulk_free(devres->num_consumers, devres->consumers);
}
-/**
- * devm_regulator_bulk_get - managed get multiple regulator consumers
- *
- * @dev: device to supply
- * @num_consumers: number of consumers to register
- * @consumers: configuration of consumers; clients are stored here.
- *
- * @return 0 on success, an errno on failure.
- *
- * This helper function allows drivers to get several regulator
- * consumers in one operation with management, the regulators will
- * automatically be freed when the device is unbound. If any of the
- * regulators cannot be acquired then any regulators that were
- * allocated will be freed before returning to the caller.
- */
-int devm_regulator_bulk_get(struct device *dev, int num_consumers,
- struct regulator_bulk_data *consumers)
+static int _devm_regulator_bulk_get(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers,
+ enum regulator_get_type get_type)
{
struct regulator_bulk_devres *devres;
int ret;
@@ -212,7 +198,7 @@ int devm_regulator_bulk_get(struct device *dev, int num_consumers,
if (!devres)
return -ENOMEM;
- ret = regulator_bulk_get(dev, num_consumers, consumers);
+ ret = _regulator_bulk_get(dev, num_consumers, consumers, get_type);
if (!ret) {
devres->consumers = consumers;
devres->num_consumers = num_consumers;
@@ -223,8 +209,52 @@ int devm_regulator_bulk_get(struct device *dev, int num_consumers,
return ret;
}
+
+/**
+ * devm_regulator_bulk_get - managed get multiple regulator consumers
+ *
+ * @dev: device to supply
+ * @num_consumers: number of consumers to register
+ * @consumers: configuration of consumers; clients are stored here.
+ *
+ * @return 0 on success, an errno on failure.
+ *
+ * This helper function allows drivers to get several regulator
+ * consumers in one operation with management, the regulators will
+ * automatically be freed when the device is unbound. If any of the
+ * regulators cannot be acquired then any regulators that were
+ * allocated will be freed before returning to the caller.
+ */
+int devm_regulator_bulk_get(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers)
+{
+ return _devm_regulator_bulk_get(dev, num_consumers, consumers, NORMAL_GET);
+}
EXPORT_SYMBOL_GPL(devm_regulator_bulk_get);
+/**
+ * devm_regulator_bulk_get_exclusive - managed exclusive get of multiple
+ * regulator consumers
+ *
+ * @dev: device to supply
+ * @num_consumers: number of consumers to register
+ * @consumers: configuration of consumers; clients are stored here.
+ *
+ * @return 0 on success, an errno on failure.
+ *
+ * This helper function allows drivers to exclusively get several
+ * regulator consumers in one operation with management, the regulators
+ * will automatically be freed when the device is unbound. If any of
+ * the regulators cannot be acquired then any regulators that were
+ * allocated will be freed before returning to the caller.
+ */
+int devm_regulator_bulk_get_exclusive(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers)
+{
+ return _devm_regulator_bulk_get(dev, num_consumers, consumers, EXCLUSIVE_GET);
+}
+EXPORT_SYMBOL_GPL(devm_regulator_bulk_get_exclusive);
+
/**
* devm_regulator_bulk_get_const - devm_regulator_bulk_get() w/ const data
*
diff --git a/drivers/regulator/internal.h b/drivers/regulator/internal.h
index 1e9c71642143..fb4433068d29 100644
--- a/drivers/regulator/internal.h
+++ b/drivers/regulator/internal.h
@@ -122,4 +122,6 @@ enum regulator_get_type {
struct regulator *_regulator_get(struct device *dev, const char *id,
enum regulator_get_type get_type);
+int _regulator_bulk_get(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers, enum regulator_get_type get_type);
#endif
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index ee3b4a014611..628a52b8e63f 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -247,6 +247,8 @@ int __must_check regulator_bulk_get(struct device *dev, int num_consumers,
int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers,
struct regulator_bulk_data *consumers);
void devm_regulator_bulk_put(struct regulator_bulk_data *consumers);
+int __must_check devm_regulator_bulk_get_exclusive(struct device *dev, int num_consumers,
+ struct regulator_bulk_data *consumers);
int __must_check devm_regulator_bulk_get_const(
struct device *dev, int num_consumers,
const struct regulator_bulk_data *in_consumers,
--
2.38.1
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