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Subject[PATCH] drivers/regulator: Notify sysfs about status changes
Date
From: Patrick Rudolph <patrick.rudolph@9elements.com>

Notify sysfs for state, status & microvolts.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
---
drivers/regulator/core.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 3137e40fcd3e..ef5fa70ae2f1 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -98,6 +98,10 @@ static struct regulator *create_regulator(struct regulator_dev *rdev,
static void destroy_regulator(struct regulator *regulator);
static void _regulator_put(struct regulator *regulator);

+static struct device_attribute dev_attr_status;
+static struct device_attribute dev_attr_microvolts;
+static struct device_attribute dev_attr_state;
+
const char *rdev_get_name(struct regulator_dev *rdev)
{
if (rdev->constraints && rdev->constraints->name)
@@ -2798,6 +2802,8 @@ static int _regulator_do_enable(struct regulator_dev *rdev)
_regulator_delay_helper(delay);
}

+ sysfs_notify(&rdev->dev.kobj, NULL, dev_attr_state.attr.name);
+
trace_regulator_enable_complete(rdev_get_name(rdev));

return 0;
@@ -2980,6 +2986,8 @@ static int _regulator_do_disable(struct regulator_dev *rdev)
if (rdev->desc->off_on_delay)
rdev->last_off = ktime_get_boottime();

+ sysfs_notify(&rdev->dev.kobj, NULL, dev_attr_state.attr.name);
+
trace_regulator_disable_complete(rdev_get_name(rdev));

return 0;
@@ -4848,8 +4856,21 @@ EXPORT_SYMBOL_GPL(regulator_unregister_notifier);
static int _notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data)
{
+ const char *name;
+ int ret;
+
/* call rdev chain first */
- return blocking_notifier_call_chain(&rdev->notifier, event, data);
+ ret = blocking_notifier_call_chain(&rdev->notifier, event, data);
+
+ if (event & REGULATOR_EVENT_VOLTAGE_CHANGE) {
+ name = dev_attr_microvolts.attr.name;
+ sysfs_notify(&rdev->dev.kobj, NULL, name);
+ } else {
+ name = dev_attr_status.attr.name;
+ sysfs_notify(&rdev->dev.kobj, NULL, name);
+ }
+
+ return ret;
}

int _regulator_bulk_get(struct device *dev, int num_consumers,
base-commit: f9a1d31874c383f58bb4f89bfe79b764682cd026
--
2.41.0

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