summaryrefslogtreecommitdiffstats
path: root/drivers/power/supply/axp288_fuel_gauge.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/power/supply/axp288_fuel_gauge.c')
-rw-r--r--drivers/power/supply/axp288_fuel_gauge.c53
1 files changed, 41 insertions, 12 deletions
diff --git a/drivers/power/supply/axp288_fuel_gauge.c b/drivers/power/supply/axp288_fuel_gauge.c
index 4cc6e038dfdd..fd8f0b2210bc 100644
--- a/drivers/power/supply/axp288_fuel_gauge.c
+++ b/drivers/power/supply/axp288_fuel_gauge.c
@@ -343,7 +343,7 @@ static inline void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
static void fuel_gauge_get_status(struct axp288_fg_info *info)
{
- int pwr_stat, fg_res;
+ int pwr_stat, fg_res, curr, ret;
pwr_stat = fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS);
if (pwr_stat < 0) {
@@ -353,19 +353,42 @@ static void fuel_gauge_get_status(struct axp288_fg_info *info)
}
/* Report full if Vbus is valid and the reported capacity is 100% */
- if (pwr_stat & PS_STAT_VBUS_VALID) {
- fg_res = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
- if (fg_res < 0) {
- dev_err(&info->pdev->dev,
- "FG RES read failed: %d\n", fg_res);
- return;
- }
- if (fg_res == (FG_REP_CAP_VALID | 100)) {
- info->status = POWER_SUPPLY_STATUS_FULL;
- return;
- }
+ if (!(pwr_stat & PS_STAT_VBUS_VALID))
+ goto not_full;
+
+ fg_res = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
+ if (fg_res < 0) {
+ dev_err(&info->pdev->dev, "FG RES read failed: %d\n", fg_res);
+ return;
}
+ if (!(fg_res & FG_REP_CAP_VALID))
+ goto not_full;
+ fg_res &= ~FG_REP_CAP_VALID;
+ if (fg_res == 100) {
+ info->status = POWER_SUPPLY_STATUS_FULL;
+ return;
+ }
+
+ /*
+ * Sometimes the charger turns itself off before fg-res reaches 100%.
+ * When this happens the AXP288 reports a not-charging status and
+ * 0 mA discharge current.
+ */
+ if (fg_res < 90 || (pwr_stat & PS_STAT_BAT_CHRG_DIR))
+ goto not_full;
+
+ ret = iio_read_channel_raw(info->iio_channel[BAT_D_CURR], &curr);
+ if (ret < 0) {
+ dev_err(&info->pdev->dev, "FG get current failed: %d\n", ret);
+ return;
+ }
+ if (curr == 0) {
+ info->status = POWER_SUPPLY_STATUS_FULL;
+ return;
+ }
+
+not_full:
if (pwr_stat & PS_STAT_BAT_CHRG_DIR)
info->status = POWER_SUPPLY_STATUS_CHARGING;
else
@@ -708,6 +731,12 @@ static const struct dmi_system_id axp288_fuel_gauge_blacklist[] = {
DMI_MATCH(DMI_BOARD_VERSION, "V1.1"),
},
},
+ {
+ /* ECS EF20EA */
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
+ },
+ },
{}
};