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 void usb_forced_unbind_intf(struct usb_interface *intf); 78 extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); 79 80 extern void usb_hub_release_all_ports(struct usb_device *hdev, 81 struct usb_dev_state *owner); 82 extern bool usb_device_is_owned(struct usb_device *udev); 83 84 extern int usb_hub_init(void); 85 extern void usb_hub_cleanup(void); 86 extern int usb_major_init(void); 87 extern void usb_major_cleanup(void); 88 extern int usb_device_supports_lpm(struct usb_device *udev); 89 extern int usb_port_disable(struct usb_device *udev); 90 91 #ifdef CONFIG_PM 92 93 extern int usb_suspend(struct device *dev, pm_message_t msg); 94 extern int usb_resume(struct device *dev, pm_message_t msg); 95 extern int usb_resume_complete(struct device *dev); 96 97 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 98 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 99 100 extern void usb_autosuspend_device(struct usb_device *udev); 101 extern int usb_autoresume_device(struct usb_device *udev); 102 extern int usb_remote_wakeup(struct usb_device *dev); 103 extern int usb_runtime_suspend(struct device *dev); 104 extern int usb_runtime_resume(struct device *dev); 105 extern int usb_runtime_idle(struct device *dev); 106 extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev); 107 extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev); 108 109 extern void usbfs_notify_suspend(struct usb_device *udev); 110 extern void usbfs_notify_resume(struct usb_device *udev); 111 112 #else 113 114 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 115 { 116 return 0; 117 } 118 119 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg) 120 { 121 return 0; 122 } 123 124 #define usb_autosuspend_device(udev) do {} while (0) 125 static inline int usb_autoresume_device(struct usb_device *udev) 126 { 127 return 0; 128 } 129 130 static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev) 131 { 132 return 0; 133 } 134 135 static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) 136 { 137 return 0; 138 } 139 140 #endif 141 142 extern struct bus_type usb_bus_type; 143 extern struct mutex usb_port_peer_mutex; 144 extern struct device_type usb_device_type; 145 extern struct device_type usb_if_device_type; 146 extern struct device_type usb_ep_device_type; 147 extern struct device_type usb_port_device_type; 148 extern struct usb_device_driver usb_generic_driver; 149 150 static inline int is_usb_device(const struct device *dev) 151 { 152 return dev->type == &usb_device_type; 153 } 154 155 static inline int is_usb_interface(const struct device *dev) 156 { 157 return dev->type == &usb_if_device_type; 158 } 159 160 static inline int is_usb_endpoint(const struct device *dev) 161 { 162 return dev->type == &usb_ep_device_type; 163 } 164 165 static inline int is_usb_port(const struct device *dev) 166 { 167 return dev->type == &usb_port_device_type; 168 } 169 170 static inline int is_root_hub(struct usb_device *udev) 171 { 172 return (udev->parent == NULL); 173 } 174 175 /* Do the same for device drivers and interface drivers. */ 176 177 static inline int is_usb_device_driver(struct device_driver *drv) 178 { 179 return container_of(drv, struct usbdrv_wrap, driver)-> 180 for_devices; 181 } 182 183 /* for labeling diagnostics */ 184 extern const char *usbcore_name; 185 186 /* sysfs stuff */ 187 extern const struct attribute_group *usb_device_groups[]; 188 extern const struct attribute_group *usb_interface_groups[]; 189 190 /* usbfs stuff */ 191 extern struct usb_driver usbfs_driver; 192 extern const struct file_operations usbfs_devices_fops; 193 extern const struct file_operations usbdev_file_operations; 194 195 extern int usb_devio_init(void); 196 extern void usb_devio_cleanup(void); 197 198 /* 199 * Firmware specific cookie identifying a port's location. '0' == no location 200 * data available 201 */ 202 typedef u32 usb_port_location_t; 203 204 /* internal notify stuff */ 205 extern void usb_notify_add_device(struct usb_device *udev); 206 extern void usb_notify_remove_device(struct usb_device *udev); 207 extern void usb_notify_add_bus(struct usb_bus *ubus); 208 extern void usb_notify_remove_bus(struct usb_bus *ubus); 209 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 210 struct usb_hub_descriptor *desc); 211 212 #ifdef CONFIG_ACPI 213 extern int usb_acpi_register(void); 214 extern void usb_acpi_unregister(void); 215 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 216 int port1); 217 #else 218 static inline int usb_acpi_register(void) { return 0; }; 219 static inline void usb_acpi_unregister(void) { }; 220 #endif 221