diff options
| author | Andreas Kemnade <andreas@kemnade.info> | 2021-05-29 00:30:05 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2021-06-03 20:31:23 +0300 |
| commit | 7d76367774d716d28bf003defded61a37b4c83ed (patch) | |
| tree | d5af8fea10fa6feecb09f7dd3f285d227872b5d4 /drivers/power | |
| parent | 3ee236296a4093a6c9967647ed6f640a81ae9f25 (diff) | |
| download | linux-7d76367774d716d28bf003defded61a37b4c83ed.tar.xz | |
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.c | 47 |
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, ®val); + 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, |