Commit bc558a60 authored by Mark Brown's avatar Mark Brown Committed by Liam Girdwood

regulator: Export regulator name via sysfs

Provide a new file 'name' in the regulator sysfs class with a human
readable name for the regulator for use in applications.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 42fad570
......@@ -157,6 +157,19 @@ Description:
platform code.
What: /sys/class/regulator/.../name
Date: October 2008
KernelVersion: 2.6.28
Contact: Liam Girdwood <lrg@slimlogic.co.uk>
Description:
Each regulator directory will contain a field called
name. This holds a string identifying the regulator for
display purposes.
NOTE: this will be empty if no suitable name is provided
by platform or regulator drivers.
What: /sys/class/regulator/.../num_users
Date: April 2008
KernelVersion: 2.6.26
......
......@@ -241,6 +241,22 @@ static ssize_t regulator_uA_show(struct device *dev,
return sprintf(buf, "%d\n", _regulator_get_current_limit(rdev));
}
static ssize_t regulator_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct regulator_dev *rdev = dev_get_drvdata(dev);
const char *name;
if (rdev->constraints->name)
name = rdev->constraints->name;
else if (rdev->desc->name)
name = rdev->desc->name;
else
name = "";
return sprintf(buf, "%s\n", name);
}
static ssize_t regulator_opmode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
......@@ -473,7 +489,9 @@ static ssize_t regulator_suspend_standby_state_show(struct device *dev,
else
return sprintf(buf, "disabled\n");
}
static struct device_attribute regulator_dev_attrs[] = {
__ATTR(name, 0444, regulator_name_show, NULL),
__ATTR(microvolts, 0444, regulator_uV_show, NULL),
__ATTR(microamps, 0444, regulator_uA_show, NULL),
__ATTR(opmode, 0444, regulator_opmode_show, NULL),
......
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