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Commit 5de70519 authored by Mark Brown's avatar Mark Brown Committed by Liam Girdwood
Browse files

regulator: Add basic per consumer debugfs 



Report the requested load and voltage for each consumer in debugfs when it
is enabled.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 7d51a0db

drivers/regulator/core.c

+29 −1
Original line number Diff line number Diff line
@@ -81,6 +81,9 @@ struct regulator { 
	char *supply_name;

	struct device_attribute dev_attr;

	struct regulator_dev *rdev;

#ifdef CONFIG_DEBUG_FS

	struct dentry *debugfs;

#endif

};



static int _regulator_is_enabled(struct regulator_dev *rdev);
@@ -1093,7 +1096,28 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, 
				  dev->kobj.name, err);

			goto link_name_err;

		}

	} else {

		regulator->supply_name = kstrdup(supply_name, GFP_KERNEL);

		if (regulator->supply_name == NULL)

			goto attr_err;

	}



#ifdef CONFIG_DEBUG_FS

	regulator->debugfs = debugfs_create_dir(regulator->supply_name,

						rdev->debugfs);

	if (IS_ERR_OR_NULL(regulator->debugfs)) {

		rdev_warn(rdev, "Failed to create debugfs directory\n");

		regulator->debugfs = NULL;

	} else {

		debugfs_create_u32("uA_load", 0444, regulator->debugfs,

				   &regulator->uA_load);

		debugfs_create_u32("min_uV", 0444, regulator->debugfs,

				   &regulator->min_uV);

		debugfs_create_u32("max_uV", 0444, regulator->debugfs,

				   &regulator->max_uV);

	}

#endif



	mutex_unlock(&rdev->mutex);

	return regulator;

link_name_err:
@@ -1272,13 +1296,17 @@ void regulator_put(struct regulator *regulator) 
	mutex_lock(&regulator_list_mutex);

	rdev = regulator->rdev;



#ifdef CONFIG_DEBUG_FS

	debugfs_remove_recursive(regulator->debugfs);

#endif



	/* remove any sysfs entries */

	if (regulator->dev) {

		sysfs_remove_link(&rdev->dev.kobj, regulator->supply_name);

		kfree(regulator->supply_name);

		device_remove_file(regulator->dev, &regulator->dev_attr);

		kfree(regulator->dev_attr.attr.name);

	}

	kfree(regulator->supply_name);

	list_del(&regulator->list);

	kfree(regulator);