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usb: Inform the USB Type-C class about enumerated devices
The Type-C port drivers can make PM related decisions based on is the device USB3 or USB2. Suggested-by: Benson Leung <bleung@chromium.org> Tested-by: Benson Leung <bleung@chromium.org> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20231011105825.320062-3-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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59de2a56d1
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3 changed files with 24 additions and 2 deletions
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@ -2274,6 +2274,8 @@ void usb_disconnect(struct usb_device **pdev)
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*/
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if (!test_and_set_bit(port1, hub->child_usage_bits))
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pm_runtime_get_sync(&port_dev->dev);
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typec_deattach(port_dev->connector, &udev->dev);
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}
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usb_remove_ep_devs(&udev->ep0);
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@ -2620,6 +2622,8 @@ int usb_new_device(struct usb_device *udev)
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if (!test_and_set_bit(port1, hub->child_usage_bits))
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pm_runtime_get_sync(&port_dev->dev);
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typec_attach(port_dev->connector, &udev->dev);
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}
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(void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev);
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@ -14,6 +14,7 @@
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#include <linux/usb.h>
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#include <linux/usb/ch11.h>
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#include <linux/usb/hcd.h>
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#include <linux/usb/typec.h>
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#include "usb.h"
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struct usb_hub {
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@ -82,6 +83,7 @@ struct usb_hub {
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* @dev: generic device interface
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* @port_owner: port's owner
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* @peer: related usb2 and usb3 ports (share the same connector)
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* @connector: USB Type-C connector
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* @req: default pm qos request for hubs without port power control
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* @connect_type: port's connect type
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* @state: device state of the usb device attached to the port
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@ -100,6 +102,7 @@ struct usb_port {
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struct device dev;
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struct usb_dev_state *port_owner;
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struct usb_port *peer;
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struct typec_connector *connector;
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struct dev_pm_qos_request *req;
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enum usb_port_connect_type connect_type;
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enum usb_device_state state;
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@ -653,6 +653,7 @@ static void find_and_link_peer(struct usb_hub *hub, int port1)
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static int connector_bind(struct device *dev, struct device *connector, void *data)
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{
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struct usb_port *port_dev = to_usb_port(dev);
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int ret;
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ret = sysfs_create_link(&dev->kobj, &connector->kobj, "connector");
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@ -660,16 +661,30 @@ static int connector_bind(struct device *dev, struct device *connector, void *da
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return ret;
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ret = sysfs_create_link(&connector->kobj, &dev->kobj, dev_name(dev));
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if (ret)
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if (ret) {
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sysfs_remove_link(&dev->kobj, "connector");
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return ret;
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}
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port_dev->connector = data;
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/*
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* If there is already USB device connected to the port, letting the
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* Type-C connector know about it immediately.
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*/
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if (port_dev->child)
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typec_attach(port_dev->connector, &port_dev->child->dev);
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return 0;
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}
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static void connector_unbind(struct device *dev, struct device *connector, void *data)
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{
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struct usb_port *port_dev = to_usb_port(dev);
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sysfs_remove_link(&connector->kobj, dev_name(dev));
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sysfs_remove_link(&dev->kobj, "connector");
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port_dev->connector = NULL;
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}
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static const struct component_ops connector_ops = {
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