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power: supply: rn5t618: Add charger type detection

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

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Andreas Kemnade 2021-05-28 23:30:05 +02:00 committed by Sebastian Reichel
parent 3ee236296a
commit 7d76367774
1 changed files with 47 additions and 0 deletions
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47
drivers/power/supply/rn5t618_power.c
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@ -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,