From 1b5b42216469b05ef4b5916cb40b127dfab1da88 Mon Sep 17 00:00:00 2001 From: Axel Haslam Date: Thu, 3 Nov 2016 12:11:42 +0100 Subject: regulator: core: Add new API to poll for error conditions Regulator consumers can receive event notifications when errors are reported to the driver, but currently, there is no way for a regulator consumer to know when the error is over. To allow a regulator consumer to poll for error conditions add a new API: regulator_get_error_flags. Signed-off-by: Axel Haslam Signed-off-by: Mark Brown --- drivers/regulator/core.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'drivers/regulator/core.c') diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 67426c0477d3..08260c215895 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -3359,6 +3359,39 @@ unsigned int regulator_get_mode(struct regulator *regulator) } EXPORT_SYMBOL_GPL(regulator_get_mode); +static int _regulator_get_error_flags(struct regulator_dev *rdev, + unsigned int *flags) +{ + int ret; + + mutex_lock(&rdev->mutex); + + /* sanity check */ + if (!rdev->desc->ops->get_error_flags) { + ret = -EINVAL; + goto out; + } + + ret = rdev->desc->ops->get_error_flags(rdev, flags); +out: + mutex_unlock(&rdev->mutex); + return ret; +} + +/** + * regulator_get_error_flags - get regulator error information + * @regulator: regulator source + * @flags: pointer to store error flags + * + * Get the current regulator error information. + */ +int regulator_get_error_flags(struct regulator *regulator, + unsigned int *flags) +{ + return _regulator_get_error_flags(regulator->rdev, flags); +} +EXPORT_SYMBOL_GPL(regulator_get_error_flags); + /** * regulator_set_load - set regulator load * @regulator: regulator source -- cgit v1.2.3-58-ga151