Commit 7d763677 authored by Andreas Kemnade's avatar Andreas Kemnade Committed by Sebastian Reichel
Browse files

power: supply: rn5t618: Add charger type detection 



The RC5T619 can detect SDP, CDP and DCP chargers, so let's add support
for it.

Signed-off-by: default avatarAndreas Kemnade <andreas@kemnade.info>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 3ee23629

drivers/power/supply/rn5t618_power.c

+47 −0
Original line number Diff line number Diff line
@@ -37,6 +37,11 @@ 
#define CHG_STATE_NO_BAT2	13

#define CHG_STATE_CHG_READY_VUSB	14



#define GCHGDET_TYPE_MASK 0x30

#define GCHGDET_TYPE_SDP 0x00

#define GCHGDET_TYPE_CDP 0x10

#define GCHGDET_TYPE_DCP 0x20



#define FG_ENABLE 1



struct rn5t618_power_info {
@@ -48,8 +53,16 @@ struct rn5t618_power_info { 
	int irq;

};



static enum power_supply_usb_type rn5t618_usb_types[] = {

	POWER_SUPPLY_USB_TYPE_SDP,

	POWER_SUPPLY_USB_TYPE_DCP,

	POWER_SUPPLY_USB_TYPE_CDP,

	POWER_SUPPLY_USB_TYPE_UNKNOWN

};



static enum power_supply_property rn5t618_usb_props[] = {

	POWER_SUPPLY_PROP_STATUS,

	POWER_SUPPLY_PROP_USB_TYPE,

	POWER_SUPPLY_PROP_ONLINE,

};
@@ -372,6 +385,33 @@ static int rn5t618_adp_get_property(struct power_supply *psy, 
	return 0;

}



static int rc5t619_usb_get_type(struct rn5t618_power_info *info,

				union power_supply_propval *val)

{

	unsigned int regval;

	int ret;



	ret = regmap_read(info->rn5t618->regmap, RN5T618_GCHGDET, &regval);

	if (ret < 0)

		return ret;



	switch (regval & GCHGDET_TYPE_MASK) {

	case GCHGDET_TYPE_SDP:

		val->intval = POWER_SUPPLY_USB_TYPE_SDP;

		break;

	case GCHGDET_TYPE_CDP:

		val->intval = POWER_SUPPLY_USB_TYPE_CDP;

		break;

	case GCHGDET_TYPE_DCP:

		val->intval = POWER_SUPPLY_USB_TYPE_DCP;

		break;

	default:

		val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;

	}



	return 0;

}



static int rn5t618_usb_get_property(struct power_supply *psy,

				    enum power_supply_property psp,

				    union power_supply_propval *val)
@@ -401,6 +441,11 @@ static int rn5t618_usb_get_property(struct power_supply *psy, 
			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;



		break;

	case POWER_SUPPLY_PROP_USB_TYPE:

		if (!online || (info->rn5t618->variant != RC5T619))

			return -ENODATA;



		return rc5t619_usb_get_type(info, val);

	default:

		return -EINVAL;

	}
@@ -427,6 +472,8 @@ static const struct power_supply_desc rn5t618_adp_desc = { 
static const struct power_supply_desc rn5t618_usb_desc = {

	.name                   = "rn5t618-usb",

	.type                   = POWER_SUPPLY_TYPE_USB,

	.usb_types		= rn5t618_usb_types,

	.num_usb_types		= ARRAY_SIZE(rn5t618_usb_types),

	.properties             = rn5t618_usb_props,

	.num_properties         = ARRAY_SIZE(rn5t618_usb_props),

	.get_property           = rn5t618_usb_get_property,