diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2022-01-29 03:49:16 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2022-02-11 22:24:53 +0300 |
| commit | d662a7df36e1edc65eaf166ec1c8527ce9d088ea (patch) | |
| tree | bbb46e0c8ad140ef166d7704081662de78e3227f /drivers/power | |
| parent | d58964be64f3bfc21fe8054dadbf4592cdd4e9c1 (diff) | |
| download | linux-d662a7df36e1edc65eaf166ec1c8527ce9d088ea.tar.xz | |
power: supply: ab8500: Swap max and overvoltage
We should terminate charging when we reach the voltage_max_design_uv
not overvoltage_limit_uv, this is an abuse of that struct member.
The overvoltage limit is actually not configurable on the AB8500,
it is fixed to 4.75 V so drop a comment about that in the code.
Fixes: 2a5f41830aad ("power: supply: ab8500: Standardize voltages")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/ab8500_bmdata.c | 8 | ||||
| -rw-r--r-- | drivers/power/supply/ab8500_chargalg.c | 2 | ||||
| -rw-r--r-- | drivers/power/supply/ab8500_fg.c | 8 |
3 files changed, 11 insertions, 7 deletions
diff --git a/drivers/power/supply/ab8500_bmdata.c b/drivers/power/supply/ab8500_bmdata.c index 7133cce6a25a..62b63f0437dd 100644 --- a/drivers/power/supply/ab8500_bmdata.c +++ b/drivers/power/supply/ab8500_bmdata.c @@ -186,13 +186,11 @@ int ab8500_bm_of_probe(struct power_supply *psy, * fall back to safe defaults. */ if ((bi->voltage_min_design_uv < 0) || - (bi->voltage_max_design_uv < 0) || - (bi->overvoltage_limit_uv < 0)) { + (bi->voltage_max_design_uv < 0)) { /* Nominal voltage is 3.7V for unknown batteries */ bi->voltage_min_design_uv = 3700000; - bi->voltage_max_design_uv = 3700000; - /* Termination voltage (overcharge limit) 4.05V */ - bi->overvoltage_limit_uv = 4050000; + /* Termination voltage 4.05V */ + bi->voltage_max_design_uv = 4050000; } if (bi->constant_charge_current_max_ua < 0) diff --git a/drivers/power/supply/ab8500_chargalg.c b/drivers/power/supply/ab8500_chargalg.c index c4a2fe07126c..bcf85ae6828e 100644 --- a/drivers/power/supply/ab8500_chargalg.c +++ b/drivers/power/supply/ab8500_chargalg.c @@ -802,7 +802,7 @@ static void ab8500_chargalg_end_of_charge(struct ab8500_chargalg *di) if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING && di->charge_state == STATE_NORMAL && !di->maintenance_chg && (di->batt_data.volt_uv >= - di->bm->bi->overvoltage_limit_uv || + di->bm->bi->voltage_max_design_uv || di->events.usb_cv_active || di->events.ac_cv_active) && di->batt_data.avg_curr_ua < di->bm->bi->charge_term_current_ua && diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c index b0919a6a6587..236fd9f9d6f1 100644 --- a/drivers/power/supply/ab8500_fg.c +++ b/drivers/power/supply/ab8500_fg.c @@ -2263,7 +2263,13 @@ static int ab8500_fg_init_hw_registers(struct ab8500_fg *di) { int ret; - /* Set VBAT OVV threshold */ + /* + * Set VBAT OVV (overvoltage) threshold to 4.75V (typ) this is what + * the hardware supports, nothing else can be configured in hardware. + * See this as an "outer limit" where the charger will certainly + * shut down. Other (lower) overvoltage levels need to be implemented + * in software. + */ ret = abx500_mask_and_set_register_interruptible(di->dev, AB8500_CHARGER, AB8500_BATT_OVV, |