Commit eab25b4f authored by Hans de Goede's avatar Hans de Goede Committed by Sebastian Reichel
Browse files

power: supply: bq25890: On the bq25892 set the IINLIM based on external charger detection 



The bq25892 does not have builtin charger-type detection like the bq25980,
there might be some external charger detection capability, which will be
modelled as a power_supply class-device supplying the bq25892.

Use the usb_type property value from the supplier psy-device to set the
input-current-limit (when available).

Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 79d35365

drivers/power/supply/bq25890_charger.c

+33 −0
Original line number Diff line number Diff line
@@ -594,6 +594,38 @@ static int bq25890_power_supply_get_property(struct power_supply *psy, 
	return 0;

}



/* On the BQ25892 try to get charger-type info from our supplier */

static void bq25890_charger_external_power_changed(struct power_supply *psy)

{

	struct bq25890_device *bq = power_supply_get_drvdata(psy);

	union power_supply_propval val;

	int input_current_limit, ret;



	if (bq->chip_version != BQ25892)

		return;



	ret = power_supply_get_property_from_supplier(bq->charger,

						      POWER_SUPPLY_PROP_USB_TYPE,

						      &val);

	if (ret)

		return;



	switch (val.intval) {

	case POWER_SUPPLY_USB_TYPE_DCP:

		input_current_limit = bq25890_find_idx(2000000, TBL_IINLIM);

		break;

	case POWER_SUPPLY_USB_TYPE_CDP:

	case POWER_SUPPLY_USB_TYPE_ACA:

		input_current_limit = bq25890_find_idx(1500000, TBL_IINLIM);

		break;

	case POWER_SUPPLY_USB_TYPE_SDP:

	default:

		input_current_limit = bq25890_find_idx(500000, TBL_IINLIM);

	}



	bq25890_field_write(bq, F_IINLIM, input_current_limit);

}



static int bq25890_get_chip_state(struct bq25890_device *bq,

				  struct bq25890_state *state)

{
@@ -818,6 +850,7 @@ static const struct power_supply_desc bq25890_power_supply_desc = { 
	.properties = bq25890_power_supply_props,

	.num_properties = ARRAY_SIZE(bq25890_power_supply_props),

	.get_property = bq25890_power_supply_get_property,

	.external_power_changed	= bq25890_charger_external_power_changed,

};



static int bq25890_power_supply_init(struct bq25890_device *bq)