[PATCH 2/3] usb: roles: intel_xhci: Supplying software node for the role mux

[Heikki Krogerus]

The primary purpose for this node will be to allow linking
the users of the switch to it. The users will be for example
USB Type-C connectors. By supplying a reference to this
node in the software nodes representing the USB Type-C
controllers or connectors, the drivers for those devices can
access the switch.

Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
 drivers/usb/roles/intel-xhci-usb-role-switch.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/roles/intel-xhci-usb-role-switch.c b/drivers/usb/roles/intel-xhci-usb-role-switch.c
index 277de96181f9..1e86c01da35c 100644
--- a/drivers/usb/roles/intel-xhci-usb-role-switch.c
+++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c
@@ -39,6 +39,10 @@ struct intel_xhci_usb_data {
 	void __iomem *base;
 };
 
+static const struct software_node intel_xhci_usb_node = {
+	"intel-xhci-usb-sw",
+};
+
 static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role)
 {
 	struct intel_xhci_usb_data *data = dev_get_drvdata(dev);
@@ -122,7 +126,7 @@ static enum usb_role intel_xhci_usb_get_role(struct device *dev)
 	return role;
 }
 
-static const struct usb_role_switch_desc sw_desc = {
+static struct usb_role_switch_desc sw_desc = {
 	.set = intel_xhci_usb_set_role,
 	.get = intel_xhci_usb_get_role,
 	.allow_userspace_control = true,
@@ -133,6 +137,7 @@ static int intel_xhci_usb_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct intel_xhci_usb_data *data;
 	struct resource *res;
+	int ret;
 
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
@@ -147,6 +152,12 @@ static int intel_xhci_usb_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, data);
 
+	ret = software_node_register(&intel_xhci_usb_node);
+	if (ret)
+		return ret;
+
+	sw_desc.fwnode = software_node_fwnode(&intel_xhci_usb_node);
+
 	data->role_sw = usb_role_switch_register(dev, &sw_desc);
 	if (IS_ERR(data->role_sw))
 		return PTR_ERR(data->role_sw);
-- 
2.20.1