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Subject[PATCH v3 5/9] power: supply: axp20x_usb_power: add function to get max current
Date
From: Quentin Schulz <quentin.schulz@bootlin.com>

To prepare for a new PMIC, factor out the code responsible of returning
the maximum current to axp20x_get_current_max.

Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
drivers/power/supply/axp20x_usb_power.c | 52 ++++++++++++++-----------
1 file changed, 30 insertions(+), 22 deletions(-)

diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c
index ac061bcdc056..90d06027bf98 100644
--- a/drivers/power/supply/axp20x_usb_power.c
+++ b/drivers/power/supply/axp20x_usb_power.c
@@ -102,6 +102,35 @@ static bool axp20x_usb_vbus_needs_polling(struct axp20x_usb_power *power)
return false;
}

+static int axp20x_get_current_max(struct axp20x_usb_power *power, int *val)
+{
+ unsigned int v;
+ int ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
+
+ if (ret)
+ return ret;
+
+ switch (v & AXP20X_VBUS_CLIMIT_MASK) {
+ case AXP20X_VBUS_CLIMIT_100mA:
+ if (power->axp20x_id == AXP221_ID)
+ *val = -1; /* No 100mA limit */
+ else
+ *val = 100000;
+ break;
+ case AXP20X_VBUS_CLIMIT_500mA:
+ *val = 500000;
+ break;
+ case AXP20X_VBUS_CLIMIT_900mA:
+ *val = 900000;
+ break;
+ case AXP20X_VBUS_CLIMIT_NONE:
+ *val = -1;
+ break;
+ }
+
+ return 0;
+}
+
static int axp20x_usb_power_get_property(struct power_supply *psy,
enum power_supply_property psp, union power_supply_propval *val)
{
@@ -140,28 +169,7 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
val->intval = ret * 1700; /* 1 step = 1.7 mV */
return 0;
case POWER_SUPPLY_PROP_CURRENT_MAX:
- ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
- if (ret)
- return ret;
-
- switch (v & AXP20X_VBUS_CLIMIT_MASK) {
- case AXP20X_VBUS_CLIMIT_100mA:
- if (power->axp20x_id == AXP221_ID)
- val->intval = -1; /* No 100mA limit */
- else
- val->intval = 100000;
- break;
- case AXP20X_VBUS_CLIMIT_500mA:
- val->intval = 500000;
- break;
- case AXP20X_VBUS_CLIMIT_900mA:
- val->intval = 900000;
- break;
- case AXP20X_VBUS_CLIMIT_NONE:
- val->intval = -1;
- break;
- }
- return 0;
+ return axp20x_get_current_max(power, &val->intval);
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
ret = iio_read_channel_processed(power->vbus_i,
--
2.20.1
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