usb.h (7606B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Released under the GPLv2 only. 4 */ 5 6#include <linux/pm.h> 7#include <linux/acpi.h> 8 9struct usb_hub_descriptor; 10struct usb_dev_state; 11 12/* Functions local to drivers/usb/core/ */ 13 14extern int usb_create_sysfs_dev_files(struct usb_device *dev); 15extern void usb_remove_sysfs_dev_files(struct usb_device *dev); 16extern void usb_create_sysfs_intf_files(struct usb_interface *intf); 17extern void usb_remove_sysfs_intf_files(struct usb_interface *intf); 18extern int usb_create_ep_devs(struct device *parent, 19 struct usb_host_endpoint *endpoint, 20 struct usb_device *udev); 21extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint); 22 23extern void usb_enable_endpoint(struct usb_device *dev, 24 struct usb_host_endpoint *ep, bool reset_toggle); 25extern void usb_enable_interface(struct usb_device *dev, 26 struct usb_interface *intf, bool reset_toggles); 27extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr, 28 bool reset_hardware); 29extern void usb_disable_interface(struct usb_device *dev, 30 struct usb_interface *intf, bool reset_hardware); 31extern void usb_release_interface_cache(struct kref *ref); 32extern void usb_disable_device(struct usb_device *dev, int skip_ep0); 33extern int usb_deauthorize_device(struct usb_device *); 34extern int usb_authorize_device(struct usb_device *); 35extern void usb_deauthorize_interface(struct usb_interface *); 36extern void usb_authorize_interface(struct usb_interface *); 37extern void usb_detect_quirks(struct usb_device *udev); 38extern void usb_detect_interface_quirks(struct usb_device *udev); 39extern void usb_release_quirk_list(void); 40extern bool usb_endpoint_is_ignored(struct usb_device *udev, 41 struct usb_host_interface *intf, 42 struct usb_endpoint_descriptor *epd); 43extern int usb_remove_device(struct usb_device *udev); 44 45extern int usb_get_device_descriptor(struct usb_device *dev, 46 unsigned int size); 47extern int usb_set_isoch_delay(struct usb_device *dev); 48extern int usb_get_bos_descriptor(struct usb_device *dev); 49extern void usb_release_bos_descriptor(struct usb_device *dev); 50extern char *usb_cache_string(struct usb_device *udev, int index); 51extern int usb_set_configuration(struct usb_device *dev, int configuration); 52extern int usb_choose_configuration(struct usb_device *udev); 53extern int usb_generic_driver_probe(struct usb_device *udev); 54extern void usb_generic_driver_disconnect(struct usb_device *udev); 55extern int usb_generic_driver_suspend(struct usb_device *udev, 56 pm_message_t msg); 57extern int usb_generic_driver_resume(struct usb_device *udev, 58 pm_message_t msg); 59 60static inline unsigned usb_get_max_power(struct usb_device *udev, 61 struct usb_host_config *c) 62{ 63 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */ 64 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2); 65 66 return c->desc.bMaxPower * mul; 67} 68 69extern void usb_kick_hub_wq(struct usb_device *dev); 70extern int usb_match_one_id_intf(struct usb_device *dev, 71 struct usb_host_interface *intf, 72 const struct usb_device_id *id); 73extern int usb_match_device(struct usb_device *dev, 74 const struct usb_device_id *id); 75extern const struct usb_device_id *usb_device_match_id(struct usb_device *udev, 76 const struct usb_device_id *id); 77extern bool usb_driver_applicable(struct usb_device *udev, 78 struct usb_device_driver *udrv); 79extern void usb_forced_unbind_intf(struct usb_interface *intf); 80extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); 81 82extern void usb_hub_release_all_ports(struct usb_device *hdev, 83 struct usb_dev_state *owner); 84extern bool usb_device_is_owned(struct usb_device *udev); 85 86extern int usb_hub_init(void); 87extern void usb_hub_cleanup(void); 88extern int usb_major_init(void); 89extern void usb_major_cleanup(void); 90extern int usb_device_supports_lpm(struct usb_device *udev); 91extern int usb_port_disable(struct usb_device *udev); 92 93#ifdef CONFIG_PM 94 95extern int usb_suspend(struct device *dev, pm_message_t msg); 96extern int usb_resume(struct device *dev, pm_message_t msg); 97extern int usb_resume_complete(struct device *dev); 98 99extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 100extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 101 102extern void usb_autosuspend_device(struct usb_device *udev); 103extern int usb_autoresume_device(struct usb_device *udev); 104extern int usb_remote_wakeup(struct usb_device *dev); 105extern int usb_runtime_suspend(struct device *dev); 106extern int usb_runtime_resume(struct device *dev); 107extern int usb_runtime_idle(struct device *dev); 108extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev); 109extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev); 110 111extern void usbfs_notify_suspend(struct usb_device *udev); 112extern void usbfs_notify_resume(struct usb_device *udev); 113 114#else 115 116static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 117{ 118 return 0; 119} 120 121static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg) 122{ 123 return 0; 124} 125 126#define usb_autosuspend_device(udev) do {} while (0) 127static inline int usb_autoresume_device(struct usb_device *udev) 128{ 129 return 0; 130} 131 132static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev) 133{ 134 return 0; 135} 136 137static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) 138{ 139 return 0; 140} 141 142#endif 143 144extern struct bus_type usb_bus_type; 145extern struct mutex usb_port_peer_mutex; 146extern struct device_type usb_device_type; 147extern struct device_type usb_if_device_type; 148extern struct device_type usb_ep_device_type; 149extern struct device_type usb_port_device_type; 150extern struct usb_device_driver usb_generic_driver; 151 152static inline int is_usb_device(const struct device *dev) 153{ 154 return dev->type == &usb_device_type; 155} 156 157static inline int is_usb_interface(const struct device *dev) 158{ 159 return dev->type == &usb_if_device_type; 160} 161 162static inline int is_usb_endpoint(const struct device *dev) 163{ 164 return dev->type == &usb_ep_device_type; 165} 166 167static inline int is_usb_port(const struct device *dev) 168{ 169 return dev->type == &usb_port_device_type; 170} 171 172static inline int is_root_hub(struct usb_device *udev) 173{ 174 return (udev->parent == NULL); 175} 176 177/* Do the same for device drivers and interface drivers. */ 178 179static inline int is_usb_device_driver(struct device_driver *drv) 180{ 181 return container_of(drv, struct usbdrv_wrap, driver)-> 182 for_devices; 183} 184 185/* for labeling diagnostics */ 186extern const char *usbcore_name; 187 188/* sysfs stuff */ 189extern const struct attribute_group *usb_device_groups[]; 190extern const struct attribute_group *usb_interface_groups[]; 191 192/* usbfs stuff */ 193extern struct usb_driver usbfs_driver; 194extern const struct file_operations usbfs_devices_fops; 195extern const struct file_operations usbdev_file_operations; 196 197extern int usb_devio_init(void); 198extern void usb_devio_cleanup(void); 199 200/* 201 * Firmware specific cookie identifying a port's location. '0' == no location 202 * data available 203 */ 204typedef u32 usb_port_location_t; 205 206/* internal notify stuff */ 207extern void usb_notify_add_device(struct usb_device *udev); 208extern void usb_notify_remove_device(struct usb_device *udev); 209extern void usb_notify_add_bus(struct usb_bus *ubus); 210extern void usb_notify_remove_bus(struct usb_bus *ubus); 211extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 212 struct usb_hub_descriptor *desc); 213 214#ifdef CONFIG_ACPI 215extern int usb_acpi_register(void); 216extern void usb_acpi_unregister(void); 217extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 218 int port1); 219#else 220static inline int usb_acpi_register(void) { return 0; }; 221static inline void usb_acpi_unregister(void) { }; 222#endif