diff options
| author | Jameson Thies <jthies@google.com> | 2025-10-17 02:59:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-22 11:58:31 +0300 |
| commit | ef7204a9aada8be607a1b7d7bed0c0280d0bce89 (patch) | |
| tree | fefe90763e73dcad5956bc99128d795376c76891 | |
| parent | 0ec946d32ef7b1f58070cbef06bd7bdc8193c94a (diff) | |
| download | linux-ef7204a9aada8be607a1b7d7bed0c0280d0bce89.tar.xz | |
usb: typec: ucsi: psy: Add power supply status
Add support for power supply status. If a port is acting as a sink
with the sink path enabled, report it is charging. If a port is
source, report it is discharging. If there is no connection or the
port hasn't enabled the sink path, report not charging.
Signed-off-by: Jameson Thies <jthies@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Tested-By: Kenneth R. Crudup <kenny@panix.com>
Link: https://patch.msgid.link/20251016235909.2092917-2-jthies@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/typec/ucsi/psy.c | 26 | ||||
| -rw-r--r-- | drivers/usb/typec/ucsi/ucsi.h | 3 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/usb/typec/ucsi/psy.c b/drivers/usb/typec/ucsi/psy.c index 62a9d68bb66d..2b0225821502 100644 --- a/drivers/usb/typec/ucsi/psy.c +++ b/drivers/usb/typec/ucsi/psy.c @@ -29,6 +29,7 @@ static enum power_supply_property ucsi_psy_props[] = { POWER_SUPPLY_PROP_CURRENT_MAX, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_SCOPE, + POWER_SUPPLY_PROP_STATUS, }; static int ucsi_psy_get_scope(struct ucsi_connector *con, @@ -51,6 +52,29 @@ static int ucsi_psy_get_scope(struct ucsi_connector *con, return 0; } +static int ucsi_psy_get_status(struct ucsi_connector *con, + union power_supply_propval *val) +{ + bool is_sink = UCSI_CONSTAT(con, PWR_DIR) == TYPEC_SINK; + bool sink_path_enabled = true; + + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + + if (con->ucsi->version >= UCSI_VERSION_2_0) + sink_path_enabled = + UCSI_CONSTAT(con, SINK_PATH_STATUS_V2_0) == + UCSI_CONSTAT_SINK_PATH_ENABLED; + + if (UCSI_CONSTAT(con, CONNECTED)) { + if (is_sink && sink_path_enabled) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else if (!is_sink) + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + } + + return 0; +} + static int ucsi_psy_get_online(struct ucsi_connector *con, union power_supply_propval *val) { @@ -245,6 +269,8 @@ static int ucsi_psy_get_prop(struct power_supply *psy, return ucsi_psy_get_current_now(con, val); case POWER_SUPPLY_PROP_SCOPE: return ucsi_psy_get_scope(con, val); + case POWER_SUPPLY_PROP_STATUS: + return ucsi_psy_get_status(con, val); default: return -EINVAL; } diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index e301d9012936..cce93af7461b 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -360,6 +360,9 @@ struct ucsi_cable_property { #define UCSI_CONSTAT_BC_SLOW_CHARGING 2 #define UCSI_CONSTAT_BC_TRICKLE_CHARGING 3 #define UCSI_CONSTAT_PD_VERSION_V1_2 UCSI_DECLARE_BITFIELD_V1_2(70, 16) +#define UCSI_CONSTAT_SINK_PATH_STATUS_V2_0 UCSI_DECLARE_BITFIELD_V2_0(87, 1) +#define UCSI_CONSTAT_SINK_PATH_DISABLED 0 +#define UCSI_CONSTAT_SINK_PATH_ENABLED 1 #define UCSI_CONSTAT_PWR_READING_READY_V2_1 UCSI_DECLARE_BITFIELD_V2_1(89, 1) #define UCSI_CONSTAT_CURRENT_SCALE_V2_1 UCSI_DECLARE_BITFIELD_V2_1(90, 3) #define UCSI_CONSTAT_PEAK_CURRENT_V2_1 UCSI_DECLARE_BITFIELD_V2_1(93, 16) |