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 void usb_release_quirk_list(void); 40 extern bool usb_endpoint_is_ignored(struct usb_device *udev, 41 struct usb_host_interface *intf, 42 struct usb_endpoint_descriptor *epd); 43 extern int usb_remove_device(struct usb_device *udev); 44 45 extern int usb_get_device_descriptor(struct usb_device *dev, 46 unsigned int size); 47 extern int usb_set_isoch_delay(struct usb_device *dev); 48 extern int usb_get_bos_descriptor(struct usb_device *dev); 49 extern void usb_release_bos_descriptor(struct usb_device *dev); 50 extern char *usb_cache_string(struct usb_device *udev, int index); 51 extern int usb_set_configuration(struct usb_device *dev, int configuration); 52 extern int usb_choose_configuration(struct usb_device *udev); 53 extern int usb_generic_driver_probe(struct usb_device *udev); 54 extern void usb_generic_driver_disconnect(struct usb_device *udev); 55 extern int usb_generic_driver_suspend(struct usb_device *udev, 56 pm_message_t msg); 57 extern int usb_generic_driver_resume(struct usb_device *udev, 58 pm_message_t msg); 59 60 static 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 69 extern void usb_kick_hub_wq(struct usb_device *dev); 70 extern int usb_match_one_id_intf(struct usb_device *dev, 71 struct usb_host_interface *intf, 72 const struct usb_device_id *id); 73 extern int usb_match_device(struct usb_device *dev, 74 const struct usb_device_id *id); 75 extern const struct usb_device_id *usb_device_match_id(struct usb_device *udev, 76 const struct usb_device_id *id); 77 extern bool usb_driver_applicable(struct usb_device *udev, 78 struct usb_device_driver *udrv); 79 extern void usb_forced_unbind_intf(struct usb_interface *intf); 80 extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); 81 82 extern void usb_hub_release_all_ports(struct usb_device *hdev, 83 struct usb_dev_state *owner); 84 extern bool usb_device_is_owned(struct usb_device *udev); 85 86 extern int usb_hub_init(void); 87 extern void usb_hub_cleanup(void); 88 extern int usb_major_init(void); 89 extern void usb_major_cleanup(void); 90 extern int usb_device_supports_lpm(struct usb_device *udev); 91 extern int usb_port_disable(struct usb_device *udev); 92 93 #ifdef CONFIG_PM 94 95 extern int usb_suspend(struct device *dev, pm_message_t msg); 96 extern int usb_resume(struct device *dev, pm_message_t msg); 97 extern int usb_resume_complete(struct device *dev); 98 99 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 100 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 101 102 extern void usb_autosuspend_device(struct usb_device *udev); 103 extern int usb_autoresume_device(struct usb_device *udev); 104 extern int usb_remote_wakeup(struct usb_device *dev); 105 extern int usb_runtime_suspend(struct device *dev); 106 extern int usb_runtime_resume(struct device *dev); 107 extern int usb_runtime_idle(struct device *dev); 108 extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev); 109 extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev); 110 111 extern void usbfs_notify_suspend(struct usb_device *udev); 112 extern void usbfs_notify_resume(struct usb_device *udev); 113 114 #else 115 116 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 117 { 118 return 0; 119 } 120 121 static 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) 127 static inline int usb_autoresume_device(struct usb_device *udev) 128 { 129 return 0; 130 } 131 132 static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev) 133 { 134 return 0; 135 } 136 137 static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) 138 { 139 return 0; 140 } 141 142 #endif 143 144 extern struct bus_type usb_bus_type; 145 extern struct mutex usb_port_peer_mutex; 146 extern struct device_type usb_device_type; 147 extern struct device_type usb_if_device_type; 148 extern struct device_type usb_ep_device_type; 149 extern struct device_type usb_port_device_type; 150 extern struct usb_device_driver usb_generic_driver; 151 152 static inline int is_usb_device(const struct device *dev) 153 { 154 return dev->type == &usb_device_type; 155 } 156 157 static inline int is_usb_interface(const struct device *dev) 158 { 159 return dev->type == &usb_if_device_type; 160 } 161 162 static inline int is_usb_endpoint(const struct device *dev) 163 { 164 return dev->type == &usb_ep_device_type; 165 } 166 167 static inline int is_usb_port(const struct device *dev) 168 { 169 return dev->type == &usb_port_device_type; 170 } 171 172 static 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. */ 178 179 static 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 */ 186 extern const char *usbcore_name; 187 188 /* sysfs stuff */ 189 extern const struct attribute_group *usb_device_groups[]; 190 extern const struct attribute_group *usb_interface_groups[]; 191 192 /* usbfs stuff */ 193 extern struct usb_driver usbfs_driver; 194 extern const struct file_operations usbfs_devices_fops; 195 extern const struct file_operations usbdev_file_operations; 196 197 extern int usb_devio_init(void); 198 extern void usb_devio_cleanup(void); 199 200 /* 201 * Firmware specific cookie identifying a port's location. '0' == no location 202 * data available 203 */ 204 typedef u32 usb_port_location_t; 205 206 /* internal notify stuff */ 207 extern void usb_notify_add_device(struct usb_device *udev); 208 extern void usb_notify_remove_device(struct usb_device *udev); 209 extern void usb_notify_add_bus(struct usb_bus *ubus); 210 extern void usb_notify_remove_bus(struct usb_bus *ubus); 211 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 212 struct usb_hub_descriptor *desc); 213 214 #ifdef CONFIG_ACPI 215 extern int usb_acpi_register(void); 216 extern void usb_acpi_unregister(void); 217 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 218 int port1); 219 #else 220 static inline int usb_acpi_register(void) { return 0; }; 221 static inline void usb_acpi_unregister(void) { }; 222 #endif 223