[PATCH v2] usb: typec: tcpm: Invoke power_supply_changed for tcpm-source-psy-

[Badhri Jagan Sridharan]

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")
Signed-off-by: Badhri Jagan Sridharan <bad...@google.com>
Reviewed-by: Guenter Roeck <li...@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.kroge...@linux.intel.com>
---
Changes since V1:
- Fixed commit message as per Guenter's suggestion
- Added Reviewed-by tags
- cc'ed stable
---
 drivers/usb/typec/tcpm/tcpm.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 11d0c40bc47d..e8936ea17f80 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -945,6 +945,7 @@ static int tcpm_set_current_limit(struct tcpm_port *port, 
u32 max_ma, u32 mv)
 
        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);
@@ -2931,6 +2932,7 @@ static int tcpm_pd_select_pdo(struct tcpm_port *port, int 
*sink_pdo,
 
        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
@@ -2955,6 +2957,7 @@ static int tcpm_pd_select_pdo(struct tcpm_port *port, int 
*sink_pdo,
                                port->pps_data.supported = true;
                                port->usb_type =
                                        POWER_SUPPLY_USB_TYPE_PD_PPS;
+                               power_supply_changed(port->psy);
                        }
                        continue;
                default:
@@ -3112,6 +3115,7 @@ static unsigned int tcpm_pd_select_pps_apdo(struct 
tcpm_port *port)
                                                  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;
@@ -3347,6 +3351,7 @@ static int tcpm_set_charge(struct tcpm_port *port, bool 
charge)
                        return ret;
        }
        port->vbus_charge = charge;
+       power_supply_changed(port->psy);
        return 0;
 }
 
@@ -3530,6 +3535,7 @@ static void tcpm_reset_port(struct tcpm_port *port)
        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)
@@ -5957,7 +5963,7 @@ static int tcpm_psy_set_prop(struct power_supply *psy,
                ret = -EINVAL;
                break;
        }
-
+       power_supply_changed(port->psy);
        return ret;
 }
 
@@ -6110,6 +6116,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, 
struct tcpc_dev *tcpc)
        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)) {
-- 
2.31.0.rc2.261.g7f71774620-goog