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 9 struct usb_hub_descriptor; 10 struct usb_dev_state; 11 12 /* Functions local to drivers/usb/core/ */ 13 14 extern int usb_create_sysfs_dev_files(struct usb_device *dev); 15 extern void usb_remove_sysfs_dev_files(struct usb_device *dev); 16 extern void usb_create_sysfs_intf_files(struct usb_interface *intf); 17 extern void usb_remove_sysfs_intf_files(struct usb_interface *intf); 18 extern int usb_create_ep_devs(struct device *parent, 19 struct usb_host_endpoint *endpoint, 20 struct usb_device *udev); 21 extern void usb_remove_ep_devs(struct usb_host_endpoint *endpoint); 22 23 extern void usb_enable_endpoint(struct usb_device *dev, 24 struct usb_host_endpoint *ep, bool reset_toggle); 25 extern void usb_enable_interface(struct usb_device *dev, 26 struct usb_interface *intf, bool reset_toggles); 27 extern void usb_disable_endpoint(struct usb_device *dev, unsigned int epaddr, 28 bool reset_hardware); 29 extern void usb_disable_interface(struct usb_device *dev, 30 struct usb_interface *intf, bool reset_hardware); 31 extern void usb_release_interface_cache(struct kref *ref); 32 extern void usb_disable_device(struct usb_device *dev, int skip_ep0); 33 extern int usb_deauthorize_device(struct usb_device *); 34 extern int usb_authorize_device(struct usb_device *); 35 extern void usb_deauthorize_interface(struct usb_interface *); 36 extern void usb_authorize_interface(struct usb_interface *); 37 extern void usb_detect_quirks(struct usb_device *udev); 38 extern void usb_detect_interface_quirks(struct usb_device *udev); 39 extern int usb_remove_device(struct usb_device *udev); 40 41 extern int usb_get_device_descriptor(struct usb_device *dev, 42 unsigned int size); 43 extern int usb_get_bos_descriptor(struct usb_device *dev); 44 extern void usb_release_bos_descriptor(struct usb_device *dev); 45 extern char *usb_cache_string(struct usb_device *udev, int index); 46 extern int usb_set_configuration(struct usb_device *dev, int configuration); 47 extern int usb_choose_configuration(struct usb_device *udev); 48 49 static inline unsigned usb_get_max_power(struct usb_device *udev, 50 struct usb_host_config *c) 51 { 52 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */ 53 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2); 54 55 return c->desc.bMaxPower * mul; 56 } 57 58 extern void usb_kick_hub_wq(struct usb_device *dev); 59 extern int usb_match_one_id_intf(struct usb_device *dev, 60 struct usb_host_interface *intf, 61 const struct usb_device_id *id); 62 extern int usb_match_device(struct usb_device *dev, 63 const struct usb_device_id *id); 64 extern void usb_forced_unbind_intf(struct usb_interface *intf); 65 extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); 66 67 extern void usb_hub_release_all_ports(struct usb_device *hdev, 68 struct usb_dev_state *owner); 69 extern bool usb_device_is_owned(struct usb_device *udev); 70 71 extern int usb_hub_init(void); 72 extern void usb_hub_cleanup(void); 73 extern int usb_major_init(void); 74 extern void usb_major_cleanup(void); 75 extern int usb_device_supports_lpm(struct usb_device *udev); 76 extern int usb_port_disable(struct usb_device *udev); 77 78 #ifdef CONFIG_PM 79 80 extern int usb_suspend(struct device *dev, pm_message_t msg); 81 extern int usb_resume(struct device *dev, pm_message_t msg); 82 extern int usb_resume_complete(struct device *dev); 83 84 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 85 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 86 87 extern void usb_autosuspend_device(struct usb_device *udev); 88 extern int usb_autoresume_device(struct usb_device *udev); 89 extern int usb_remote_wakeup(struct usb_device *dev); 90 extern int usb_runtime_suspend(struct device *dev); 91 extern int usb_runtime_resume(struct device *dev); 92 extern int usb_runtime_idle(struct device *dev); 93 extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable); 94 95 #else 96 97 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 98 { 99 return 0; 100 } 101 102 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg) 103 { 104 return 0; 105 } 106 107 #define usb_autosuspend_device(udev) do {} while (0) 108 static inline int usb_autoresume_device(struct usb_device *udev) 109 { 110 return 0; 111 } 112 113 static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) 114 { 115 return 0; 116 } 117 118 #endif 119 120 extern struct bus_type usb_bus_type; 121 extern struct mutex usb_port_peer_mutex; 122 extern struct device_type usb_device_type; 123 extern struct device_type usb_if_device_type; 124 extern struct device_type usb_ep_device_type; 125 extern struct device_type usb_port_device_type; 126 extern struct usb_device_driver usb_generic_driver; 127 128 static inline int is_usb_device(const struct device *dev) 129 { 130 return dev->type == &usb_device_type; 131 } 132 133 static inline int is_usb_interface(const struct device *dev) 134 { 135 return dev->type == &usb_if_device_type; 136 } 137 138 static inline int is_usb_endpoint(const struct device *dev) 139 { 140 return dev->type == &usb_ep_device_type; 141 } 142 143 static inline int is_usb_port(const struct device *dev) 144 { 145 return dev->type == &usb_port_device_type; 146 } 147 148 /* Do the same for device drivers and interface drivers. */ 149 150 static inline int is_usb_device_driver(struct device_driver *drv) 151 { 152 return container_of(drv, struct usbdrv_wrap, driver)-> 153 for_devices; 154 } 155 156 /* for labeling diagnostics */ 157 extern const char *usbcore_name; 158 159 /* sysfs stuff */ 160 extern const struct attribute_group *usb_device_groups[]; 161 extern const struct attribute_group *usb_interface_groups[]; 162 163 /* usbfs stuff */ 164 extern struct mutex usbfs_mutex; 165 extern struct usb_driver usbfs_driver; 166 extern const struct file_operations usbfs_devices_fops; 167 extern const struct file_operations usbdev_file_operations; 168 extern void usbfs_conn_disc_event(void); 169 170 extern int usb_devio_init(void); 171 extern void usb_devio_cleanup(void); 172 173 /* 174 * Firmware specific cookie identifying a port's location. '0' == no location 175 * data available 176 */ 177 typedef u32 usb_port_location_t; 178 179 /* internal notify stuff */ 180 extern void usb_notify_add_device(struct usb_device *udev); 181 extern void usb_notify_remove_device(struct usb_device *udev); 182 extern void usb_notify_add_bus(struct usb_bus *ubus); 183 extern void usb_notify_remove_bus(struct usb_bus *ubus); 184 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 185 struct usb_hub_descriptor *desc); 186 187 #ifdef CONFIG_ACPI 188 extern int usb_acpi_register(void); 189 extern void usb_acpi_unregister(void); 190 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 191 int port1); 192 #else 193 static inline int usb_acpi_register(void) { return 0; }; 194 static inline void usb_acpi_unregister(void) { }; 195 #endif 196