[PATCH 5.10 120/157] usb: typec: tcpm: Invoke power_supply_changed for tcpm-source-psy-

Greg Kroah-Hartman
2021-03-22T12:51:05Z

From: Badhri Jagan Sridharan <badhri@google.com>

commit 86629e098a077922438efa98dc80917604dfd317 upstream.

tcpm-source-psy- does not invoke power_supply_changed API when
one of the published power supply properties is changed.
power_supply_changed needs to be called to notify
userspace clients(uevents) and kernel clients.

Fixes: f2a8aa053c176 ("typec: tcpm: Represent source supply through power_supply")
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210317181249.1062995-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/typec/tcpm/tcpm.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -785,6 +785,7 @@ static int tcpm_set_current_limit(struct

port->supply_voltage = mv;
port->current_limit = max_ma;
+ power_supply_changed(port->psy);

if (port->tcpc->set_current_limit)
ret = port->tcpc->set_current_limit(port->tcpc, max_ma, mv);
@@ -2300,6 +2301,7 @@ static int tcpm_pd_select_pdo(struct tcp

port->pps_data.supported = false;
port->usb_type = POWER_SUPPLY_USB_TYPE_PD;
+ power_supply_changed(port->psy);

/*
* Select the source PDO providing the most power which has a
@@ -2324,6 +2326,7 @@ static int tcpm_pd_select_pdo(struct tcp
port->pps_data.supported = true;
port->usb_type =
POWER_SUPPLY_USB_TYPE_PD_PPS;
+ power_supply_changed(port->psy);
}
continue;
default:
@@ -2481,6 +2484,7 @@ static unsigned int tcpm_pd_select_pps_a
port->pps_data.out_volt));
port->pps_data.op_curr = min(port->pps_data.max_curr,
port->pps_data.op_curr);
+ power_supply_changed(port->psy);
}

return src_pdo;
@@ -2716,6 +2720,7 @@ static int tcpm_set_charge(struct tcpm_p
return ret;
}
port->vbus_charge = charge;
+ power_supply_changed(port->psy);
return 0;
}

@@ -2880,6 +2885,7 @@ static void tcpm_reset_port(struct tcpm_
port->try_src_count = 0;
port->try_snk_count = 0;
port->usb_type = POWER_SUPPLY_USB_TYPE_C;
+ power_supply_changed(port->psy);
port->nr_sink_caps = 0;
port->sink_cap_done = false;
if (port->tcpc->enable_frs)
@@ -4982,7 +4988,7 @@ static int tcpm_psy_set_prop(struct powe
ret = -EINVAL;
break;
}
-
+ power_supply_changed(port->psy);
return ret;
}

@@ -5134,6 +5140,7 @@ struct tcpm_port *tcpm_register_port(str
err = devm_tcpm_psy_register(port);
if (err)
goto out_role_sw_put;
+ power_supply_changed(port->psy);

port->typec_port = typec_register_port(port->dev, &port->typec_caps);
if (IS_ERR(port->typec_port)) {