To be able to control the charging process flexible, we need to able to
disable the charger. This commit will allow to disable the charger by
"echo 1 > /sys/class/power_supply/bq256xx-charger/charge_type"
(1 = POWER_SUPPLY_CHARGE_TYPE_NONE) and enable the charger by set it to
2/3 (POWER_SUPPLY_CHARGE_TYPE_TRICKLE/POWER_SUPPLY_CHARGE_TYPE_FAST)
Signed-off-by: Hermes Zhang <[email protected]>
---
drivers/power/supply/bq256xx_charger.c | 40 ++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c
index 9cf4936440c9..e624834ae66c 100644
--- a/drivers/power/supply/bq256xx_charger.c
+++ b/drivers/power/supply/bq256xx_charger.c
@@ -70,6 +70,9 @@
#define BQ25611D_VBATREG_THRESH_uV 4290000
#define BQ25618_VBATREG_THRESH_uV 4300000
+#define BQ256XX_CHG_CONFIG_MASK BIT(4)
+#define BQ256XX_CHG_CONFIG_BIT_SHIFT 4
+
#define BQ256XX_ITERM_MASK GENMASK(3, 0)
#define BQ256XX_ITERM_STEP_uA 60000
#define BQ256XX_ITERM_OFFSET_uA 60000
@@ -259,6 +262,7 @@ struct bq256xx_device {
* @bq256xx_set_iterm: pointer to instance specific set_iterm function
* @bq256xx_set_iprechg: pointer to instance specific set_iprechg function
* @bq256xx_set_vindpm: pointer to instance specific set_vindpm function
+ * @bq256xx_set_charge_type: pointer to instance specific set_charge_type function
*
* @bq256xx_def_ichg: default ichg value in microamps
* @bq256xx_def_iindpm: default iindpm value in microamps
@@ -290,6 +294,7 @@ struct bq256xx_chip_info {
int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm);
int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg);
int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm);
+ int (*bq256xx_set_charge_type)(struct bq256xx_device *bq, int type);
int bq256xx_def_ichg;
int bq256xx_def_iindpm;
@@ -449,6 +454,27 @@ static int bq256xx_get_state(struct bq256xx_device *bq,
return 0;
}
+static int bq256xx_set_charge_type(struct bq256xx_device *bq, int type)
+{
+ int chg_config = 0;
+
+ switch (type) {
+ case POWER_SUPPLY_CHARGE_TYPE_NONE:
+ chg_config = 0x0;
+ break;
+ case POWER_SUPPLY_CHARGE_TYPE_TRICKLE:
+ case POWER_SUPPLY_CHARGE_TYPE_FAST:
+ chg_config = 0x1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_0,
+ BQ256XX_CHG_CONFIG_MASK,
+ (chg_config ? 1 : 0) << BQ256XX_CHG_CONFIG_BIT_SHIFT);
+}
+
static int bq256xx_get_ichg_curr(struct bq256xx_device *bq)
{
unsigned int charge_current_limit;
@@ -915,6 +941,12 @@ static int bq256xx_set_charger_property(struct power_supply *psy,
return ret;
break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ ret = bq->chip_info->bq256xx_set_charge_type(bq, val->intval);
+ if (ret)
+ return ret;
+ break;
+
default:
break;
}
@@ -1197,6 +1229,7 @@ static int bq256xx_property_is_writeable(struct power_supply *psy,
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
case POWER_SUPPLY_PROP_STATUS:
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
return true;
default:
return false;
@@ -1286,6 +1319,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1316,6 +1350,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1346,6 +1381,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1376,6 +1412,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1406,6 +1443,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq256xx_set_term_curr,
.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1436,6 +1474,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq25618_619_set_term_curr,
.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
@@ -1466,6 +1505,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
.bq256xx_set_iterm = bq25618_619_set_term_curr,
.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
+ .bq256xx_set_charge_type = bq256xx_set_charge_type,
.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
--
2.30.2