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authorPali Rohár <pali.rohar@gmail.com>2011-11-01 01:43:06 +0100
committerAnton Vorontsov <cbouatmailru@gmail.com>2011-11-25 23:58:47 +0400
commita8f6bd23cc73a54b9182cf8be102739e01ea874a (patch)
tree1901f17ffd9a7537d734555e496a599ca60bd300 /drivers/power/bq27x00_battery.c
parent4b226c2cf04eb373369d298fa00181b0eec71233 (diff)
bq27x00_battery: Cache energy property
Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power/bq27x00_battery.c')
-rw-r--r--drivers/power/bq27x00_battery.c53
1 files changed, 26 insertions, 27 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 6c8dfdb169a..e9aeb533a1f 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -84,6 +84,7 @@ struct bq27x00_reg_cache {
int charge_full;
int cycle_count;
int capacity;
+ int energy;
int flags;
};
@@ -225,6 +226,28 @@ static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di)
}
/*
+ * Return the battery Available energy in µWh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
+{
+ int ae;
+
+ ae = bq27x00_read(di, BQ27x00_REG_AE, false);
+ if (ae < 0) {
+ dev_err(di->dev, "error reading available energy\n");
+ return ae;
+ }
+
+ if (di->chip == BQ27500)
+ ae *= 1000;
+ else
+ ae = ae * 29200 / BQ27000_RS;
+
+ return ae;
+}
+
+/*
* Return the battery Cycle count total
* Or < 0 if something fails.
*/
@@ -268,12 +291,14 @@ static void bq27x00_update(struct bq27x00_device_info *di)
if (cache.flags >= 0) {
if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) {
cache.capacity = -ENODATA;
+ cache.energy = -ENODATA;
cache.time_to_empty = -ENODATA;
cache.time_to_empty_avg = -ENODATA;
cache.time_to_full = -ENODATA;
cache.charge_full = -ENODATA;
} else {
cache.capacity = bq27x00_battery_read_rsoc(di);
+ cache.energy = bq27x00_battery_read_energy(di);
cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
@@ -435,32 +460,6 @@ static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
return 0;
}
-/*
- * Return the battery Available energy in µWh
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_energy(struct bq27x00_device_info *di,
- union power_supply_propval *val)
-{
- int ae;
-
- ae = bq27x00_read(di, BQ27x00_REG_AE, false);
- if (ae < 0) {
- dev_err(di->dev, "error reading available energy\n");
- return ae;
- }
-
- if (di->chip == BQ27500)
- ae *= 1000;
- else
- ae = ae * 29200 / BQ27000_RS;
-
- val->intval = ae;
-
- return 0;
-}
-
-
static int bq27x00_simple_value(int value,
union power_supply_propval *val)
{
@@ -539,7 +538,7 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
ret = bq27x00_simple_value(di->cache.cycle_count, val);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
- ret = bq27x00_battery_energy(di, val);
+ ret = bq27x00_simple_value(di->cache.energy, val);
break;
default:
return -EINVAL;