A mechanism to ignore the first external power change notification was
put in place years ago to ignore the power_supply_register notification.
However, this doesn't apply to the current situation anymore, as the
first notification is always the result of a legitimate power change.
This removes this deprecated mechanism, which puts back the driver's
state machine to a sane state (an ignored first notification previously
caused a charging/discharging status inversion).
Signed-off-by: Paul Kocialkowski <[email protected]>
---
drivers/power/supply/sbs-battery.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 8bb2eb38eb1c..3e7125c8e4d1 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -171,7 +171,6 @@ struct sbs_info {
u32 i2c_retry_count;
u32 poll_retry_count;
struct delayed_work work;
- int ignore_changes;
};
static char model_name[I2C_SMBUS_BLOCK_MAX + 1];
@@ -694,11 +693,6 @@ static void sbs_external_power_changed(struct power_supply *psy)
{
struct sbs_info *chip = power_supply_get_drvdata(psy);
- if (chip->ignore_changes > 0) {
- chip->ignore_changes--;
- return;
- }
-
/* cancel outstanding work */
cancel_delayed_work_sync(&chip->work);
@@ -775,10 +769,6 @@ static int sbs_probe(struct i2c_client *client,
chip->enable_detection = false;
psy_cfg.of_node = client->dev.of_node;
psy_cfg.drv_data = chip;
- /* ignore first notification of external change, it is generated
- * from the power_supply_register call back
- */
- chip->ignore_changes = 1;
chip->last_state = POWER_SUPPLY_STATUS_UNKNOWN;
/* use pdata if available, fall back to DT properties,
--
2.12.2
The status reported directly by the battery controller is not always
reliable and should be corrected based on the current draw information.
This implements such a correction with a dedicated function, called
where the supply status is retrieved.
Signed-off-by: Paul Kocialkowski <[email protected]>
---
drivers/power/supply/sbs-battery.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 3e7125c8e4d1..29c4e277abf1 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -295,6 +295,31 @@ static int sbs_write_word_data(struct i2c_client *client, u8 address,
return 0;
}
+static int sbs_status_correct(struct i2c_client *client, int *intval)
+{
+ int ret;
+
+ ret = sbs_read_word_data(client, sbs_data[REG_CURRENT].addr);
+ if (ret < 0)
+ return ret;
+
+ ret = (s16)ret;
+
+ /* Not drawing current means full (cannot be not charging) */
+ if (ret == 0)
+ *intval = POWER_SUPPLY_STATUS_FULL;
+
+ if (*intval == POWER_SUPPLY_STATUS_FULL) {
+ /* Drawing or providing current when full */
+ if (ret > 0)
+ *intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (ret < 0)
+ *intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ return 0;
+}
+
static int sbs_get_battery_presence_and_health(
struct i2c_client *client, enum power_supply_property psp,
union power_supply_propval *val)
@@ -401,6 +426,8 @@ static int sbs_get_battery_property(struct i2c_client *client,
else
val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ sbs_status_correct(client, &val->intval);
+
if (chip->poll_time == 0)
chip->last_state = val->intval;
else if (chip->last_state != val->intval) {
@@ -721,6 +748,8 @@ static void sbs_delayed_work(struct work_struct *work)
else
ret = POWER_SUPPLY_STATUS_CHARGING;
+ sbs_status_correct(chip->client, &ret);
+
if (chip->last_state != ret) {
chip->poll_time = 0;
power_supply_changed(chip->power_supply);
--
2.12.2