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regulator: devres: Add devm_regulator_bulk_get_exclusive()

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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@bewilderbeest.net>
Link: https://lore.kernel.org/r/20221031233704.22575-2-zev@bewilderbeest.net
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Zev Weiss 2022-10-31 16:37:02 -07:00 committed by Mark Brown
parent 9abf2313ad
commit fd18450697
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GPG Key ID: 24D68B725D5487D0
4 changed files with 76 additions and 36 deletions
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42
drivers/regulator/core.c
View File

@ -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 @@ err:
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)

66
drivers/regulator/devres.c
View File

@ -186,6 +186,30 @@ static void devm_regulator_bulk_release(struct device *dev, void *res)
regulator_bulk_free(devres->num_consumers, devres->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;
devres = devres_alloc(devm_regulator_bulk_release,
sizeof(*devres), GFP_KERNEL);
if (!devres)
return -ENOMEM;
ret = _regulator_bulk_get(dev, num_consumers, consumers, get_type);
if (!ret) {
devres->consumers = consumers;
devres->num_consumers = num_consumers;
devres_add(dev, devres);
} else {
devres_free(devres);
}
return ret;
}
/**
* devm_regulator_bulk_get - managed get multiple regulator consumers
*
@ -204,27 +228,33 @@ static void devm_regulator_bulk_release(struct device *dev, void *res)
int devm_regulator_bulk_get(struct device *dev, int num_consumers,
struct regulator_bulk_data *consumers)
{
struct regulator_bulk_devres *devres;
int ret;
devres = devres_alloc(devm_regulator_bulk_release,
sizeof(*devres), GFP_KERNEL);
if (!devres)
return -ENOMEM;
ret = regulator_bulk_get(dev, num_consumers, consumers);
if (!ret) {
devres->consumers = consumers;
devres->num_consumers = num_consumers;
devres_add(dev, devres);
} else {
devres_free(devres);
}
return ret;
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
*

2
drivers/regulator/internal.h
View File

@ -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

2
include/linux/regulator/consumer.h
View File

@ -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,