usb: roles: Leave the private driver data pointer to the drivers
Adding usb_role_switch_get/set_drvdata() functions that the switch drivers can use for setting and getting private data pointer that is associated with the switch. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20200302135353.56659-5-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -329,6 +329,7 @@ usb_role_switch_register(struct device *parent,
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sw->dev.fwnode = desc->fwnode;
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sw->dev.class = role_class;
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sw->dev.type = &usb_role_dev_type;
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dev_set_drvdata(&sw->dev, desc->driver_data);
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dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent));
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ret = device_register(&sw->dev);
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@ -356,6 +357,27 @@ void usb_role_switch_unregister(struct usb_role_switch *sw)
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}
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EXPORT_SYMBOL_GPL(usb_role_switch_unregister);
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/**
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* usb_role_switch_set_drvdata - Assign private data pointer to a switch
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* @sw: USB Role Switch
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* @data: Private data pointer
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*/
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void usb_role_switch_set_drvdata(struct usb_role_switch *sw, void *data)
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{
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dev_set_drvdata(&sw->dev, data);
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}
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EXPORT_SYMBOL_GPL(usb_role_switch_set_drvdata);
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/**
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* usb_role_switch_get_drvdata - Get the private data pointer of a switch
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* @sw: USB Role Switch
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*/
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void *usb_role_switch_get_drvdata(struct usb_role_switch *sw)
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{
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return dev_get_drvdata(&sw->dev);
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}
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EXPORT_SYMBOL_GPL(usb_role_switch_get_drvdata);
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static int __init usb_roles_init(void)
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{
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role_class = class_create(THIS_MODULE, "usb_role");
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@ -25,6 +25,7 @@ typedef enum usb_role (*usb_role_switch_get_t)(struct device *dev);
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* @set: Callback for setting the role
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* @get: Callback for getting the role (optional)
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* @allow_userspace_control: If true userspace may change the role through sysfs
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* @driver_data: Private data pointer
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*
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* @usb2_port and @usb3_port will point to the USB host port and @udc to the USB
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* device controller behind the USB connector with the role switch. If
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@ -40,6 +41,7 @@ struct usb_role_switch_desc {
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usb_role_switch_set_t set;
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usb_role_switch_get_t get;
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bool allow_userspace_control;
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void *driver_data;
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};
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@ -57,6 +59,9 @@ struct usb_role_switch *
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usb_role_switch_register(struct device *parent,
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const struct usb_role_switch_desc *desc);
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void usb_role_switch_unregister(struct usb_role_switch *sw);
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void usb_role_switch_set_drvdata(struct usb_role_switch *sw, void *data);
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void *usb_role_switch_get_drvdata(struct usb_role_switch *sw);
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#else
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static inline int usb_role_switch_set_role(struct usb_role_switch *sw,
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enum usb_role role)
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@ -90,6 +95,17 @@ usb_role_switch_register(struct device *parent,
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}
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static inline void usb_role_switch_unregister(struct usb_role_switch *sw) { }
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static inline void
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usb_role_switch_set_drvdata(struct usb_role_switch *sw, void *data)
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{
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}
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static inline void *usb_role_switch_get_drvdata(struct usb_role_switch *sw)
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{
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return NULL;
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}
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#endif
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#endif /* __LINUX_USB_ROLE_H */
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