Revert "power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL"

This reverts commit 8efe444038a205e79b38b7ad03878824901849a8 and
4cbc76eadf56399cd11fb736b33c53aec9caab8c.

Richard@laptop.org was apparently using CAPACITY_LEVEL for debugging
battery/EC problems, and was upset that it was removed.  This readds it.

Conflicts:

	Documentation/power_supply_class.txt

Signed-off-by: Andres Salomon <dilinger@collabora.co.uk>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index da73591017f..9deabbde6fd 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -51,6 +51,9 @@ static ssize_t power_supply_show_property(struct device *dev,
                 "Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd",
                 "LiMn"
         };
+        static char *capacity_level_text[] = {
+                "Unknown", "Critical", "Low", "Normal", "High", "Full"
+        };
         ssize_t ret;
         struct power_supply *psy = dev_get_drvdata(dev);
         const ptrdiff_t off = attr - power_supply_attrs;
@@ -71,6 +74,8 @@ static ssize_t power_supply_show_property(struct device *dev,
                 return sprintf(buf, "%s\n", health_text[value.intval]);
         else if (off == POWER_SUPPLY_PROP_TECHNOLOGY)
                 return sprintf(buf, "%s\n", technology_text[value.intval]);
+        else if (off == POWER_SUPPLY_PROP_CAPACITY_LEVEL)
+                return sprintf(buf, "%s\n", capacity_level_text[value.intval]);
         else if (off >= POWER_SUPPLY_PROP_MODEL_NAME)
                 return sprintf(buf, "%s\n", value.strval);
 
@@ -109,6 +114,7 @@ static struct device_attribute power_supply_attrs[] = {
         POWER_SUPPLY_ATTR(energy_now),
         POWER_SUPPLY_ATTR(energy_avg),
         POWER_SUPPLY_ATTR(capacity),
+        POWER_SUPPLY_ATTR(capacity_level),
         POWER_SUPPLY_ATTR(temp),
         POWER_SUPPLY_ATTR(temp_ambient),
         POWER_SUPPLY_ATTR(time_to_empty_now),