regulator: Export regulator name via sysfs

[linux-2.6-omap-h63xx.git] / drivers / regulator / core.c

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 9a6757decd3da851797914135ab11f92e4582339..02a774424e8de2bbade4eafeaadf6b8160fc05ef 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -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),