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

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

Documentation/ABI/testing/sysfs-class-regulator

+13 −0
Original line number Diff line number Diff line
@@ -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

drivers/regulator/core.c

+18 −0
Original line number Diff line number Diff line
@@ -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),