Messages in this thread Patch in this message | | | From | Matheus Castello <> | Subject | [PATCH v3 4/5] power: supply: max17040: Clear ALRT bit when the SOC are above threshold | Date | Sun, 26 May 2019 23:22:57 -0300 |
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In order to not generate duplicate interrupts we clear the ALRT bit when the SOC is in a state that shows that the battery is charged above the set threshold for the SOC low level alert.
Signed-off-by: Matheus Castello <matheus@castello.eng.br> --- drivers/power/supply/max17040_battery.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index 2f4851608cfe..61e6fcfea8a1 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -48,6 +48,7 @@ struct max17040_chip { int status; /* Low alert threshold from 32% to 1% of the State of Charge */ u32 low_soc_alert_threshold; + int alert_bit; };
static int max17040_get_property(struct power_supply *psy, @@ -107,6 +108,7 @@ static void max17040_reset(struct i2c_client *client) static int max17040_set_low_soc_threshold_alert(struct i2c_client *client, u32 level) { + struct max17040_chip *chip = i2c_get_clientdata(client); int ret; u16 data;
@@ -118,6 +120,7 @@ static int max17040_set_low_soc_threshold_alert(struct i2c_client *client, data &= MAX17040_ATHD_MASK; data |= level; max17040_write_reg(client, MAX17040_RCOMP, data); + chip->alert_bit = 0; ret = 0; } else { ret = -EINVAL; @@ -144,6 +147,11 @@ static void max17040_get_soc(struct i2c_client *client) soc = max17040_read_reg(client, MAX17040_SOC);
chip->soc = (soc >> 8); + + /* check SOC level to clear ALRT bit */ + if (chip->soc > chip->low_soc_alert_threshold && chip->alert_bit) + max17040_set_low_soc_threshold_alert(client, + chip->low_soc_alert_threshold); }
static void max17040_get_version(struct i2c_client *client) @@ -229,6 +237,9 @@ static irqreturn_t max17040_thread_handler(int id, void *dev) /* send uevent */ power_supply_changed(chip->battery);
+ /* ALRT bit is seted */ + chip->alert_bit = 1; + return IRQ_HANDLED; }
-- 2.20.1
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