regulator get_status()

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

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index f511a406fcaac4fca414bb954124d3e11f55cc86..0ff95c3ccf5bc6253565234ed7333ed284c022d8 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -312,6 +312,47 @@ static ssize_t regulator_state_show(struct device *dev,
 }
 static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
 
+static ssize_t regulator_status_show(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
+{
+       struct regulator_dev *rdev = dev_get_drvdata(dev);
+       int status;
+       char *label;
+
+       status = rdev->desc->ops->get_status(rdev);
+       if (status < 0)
+               return status;
+
+       switch (status) {
+       case REGULATOR_STATUS_OFF:
+               label = "off";
+               break;
+       case REGULATOR_STATUS_ON:
+               label = "on";
+               break;
+       case REGULATOR_STATUS_ERROR:
+               label = "error";
+               break;
+       case REGULATOR_STATUS_FAST:
+               label = "fast";
+               break;
+       case REGULATOR_STATUS_NORMAL:
+               label = "normal";
+               break;
+       case REGULATOR_STATUS_IDLE:
+               label = "idle";
+               break;
+       case REGULATOR_STATUS_STANDBY:
+               label = "standby";
+               break;
+       default:
+               return -ERANGE;
+       }
+
+       return sprintf(buf, "%s\n", label);
+}
+static DEVICE_ATTR(status, 0444, regulator_status_show, NULL);
+
 static ssize_t regulator_min_uA_show(struct device *dev,
                                    struct device_attribute *attr, char *buf)
 {
@@ -1744,6 +1785,11 @@ static int add_regulator_attributes(struct regulator_dev *rdev)
                if (status < 0)
                        return status;
        }
+       if (ops->get_status) {
+               status = device_create_file(dev, &dev_attr_status);
+               if (status < 0)
+                       return status;
+       }
 
        /* some attributes are type-specific */
        if (rdev->desc->type == REGULATOR_CURRENT) {