On 05/16/2017 05:26 AM, Heikki Krogerus wrote:
If USB PD contract is established after creation of the
partner, the power delivery support attribute of the partner
needs to be updated separately. This can be done in
typec_set_pwr_opmode() by checking if the port has already
partner and updating the value if it does.
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/usb/typec/typec.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c
index 89e540bb7ff3..18076b44cf56 100644
--- a/drivers/usb/typec/typec.c
+++ b/drivers/usb/typec/typec.c
@@ -1123,6 +1123,11 @@ void typec_set_vconn_role(struct typec_port *port, enum typec_role role)
}
EXPORT_SYMBOL_GPL(typec_set_vconn_role);
+static int partner_match(struct device *dev, void *data)
+{
+ return is_typec_partner(dev);
+}
+
/**
* typec_set_pwr_opmode - Report changed power operation mode
* @port: The USB Type-C Port where the mode was changed
@@ -1136,12 +1141,26 @@ EXPORT_SYMBOL_GPL(typec_set_vconn_role);
void typec_set_pwr_opmode(struct typec_port *port,
enum typec_pwr_opmode opmode)
{
+ struct device *partner_dev;
+
if (port->pwr_opmode == opmode)
return;
port->pwr_opmode = opmode;
sysfs_notify(&port->dev.kobj, NULL, "power_operation_mode");
kobject_uevent(&port->dev.kobj, KOBJ_CHANGE);
+
+ partner_dev = device_find_child(&port->dev, NULL, partner_match);
+ if (partner_dev) {
+ struct typec_partner *partner = to_typec_partner(partner_dev);
+
+ if (opmode == TYPEC_PWR_MODE_PD && !partner->usb_pd) {
+ partner->usb_pd = 1;
+ sysfs_notify(&partner_dev->kobj, NULL,
+ "supports_usb_power_delivery");
+ }
+ put_device(partner_dev);
+ }
}
EXPORT_SYMBOL_GPL(typec_set_pwr_opmode);
--
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