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authorAndreas Kemnade <andreas@kemnade.info>2021-05-28 23:30:05 +0200
committerSebastian Reichel <sebastian.reichel@collabora.com>2021-06-03 19:31:23 +0200
commit7d76367774d716d28bf003defded61a37b4c83ed (patch)
treed5af8fea10fa6feecb09f7dd3f285d227872b5d4 /drivers/power
parent3ee236296a4093a6c9967647ed6f640a81ae9f25 (diff)
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: Andreas Kemnade <andreas@kemnade.info> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/supply/rn5t618_power.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/power/supply/rn5t618_power.c b/drivers/power/supply/rn5t618_power.c
index dee520f0fdf5..f8f00f67ce4c 100644
--- a/drivers/power/supply/rn5t618_power.c
+++ b/drivers/power/supply/rn5t618_power.c
@@ -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,