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_blacklisted(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 54 static inline unsigned usb_get_max_power(struct usb_device *udev, 55 struct usb_host_config *c) 56 { 57 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */ 58 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2); 59 60 return c->desc.bMaxPower * mul; 61 } 62 63 extern void usb_kick_hub_wq(struct usb_device *dev); 64 extern int usb_match_one_id_intf(struct usb_device *dev, 65 struct usb_host_interface *intf, 66 const struct usb_device_id *id); 67 extern int usb_match_device(struct usb_device *dev, 68 const struct usb_device_id *id); 69 extern void usb_forced_unbind_intf(struct usb_interface *intf); 70 extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); 71 72 extern void usb_hub_release_all_ports(struct usb_device *hdev, 73 struct usb_dev_state *owner); 74 extern bool usb_device_is_owned(struct usb_device *udev); 75 76 extern int usb_hub_init(void); 77 extern void usb_hub_cleanup(void); 78 extern int usb_major_init(void); 79 extern void usb_major_cleanup(void); 80 extern int usb_device_supports_lpm(struct usb_device *udev); 81 extern int usb_port_disable(struct usb_device *udev); 82 83 #ifdef CONFIG_PM 84 85 extern int usb_suspend(struct device *dev, pm_message_t msg); 86 extern int usb_resume(struct device *dev, pm_message_t msg); 87 extern int usb_resume_complete(struct device *dev); 88 89 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 90 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 91 92 extern void usb_autosuspend_device(struct usb_device *udev); 93 extern int usb_autoresume_device(struct usb_device *udev); 94 extern int usb_remote_wakeup(struct usb_device *dev); 95 extern int usb_runtime_suspend(struct device *dev); 96 extern int usb_runtime_resume(struct device *dev); 97 extern int usb_runtime_idle(struct device *dev); 98 extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev); 99 extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev); 100 101 extern void usbfs_notify_suspend(struct usb_device *udev); 102 extern void usbfs_notify_resume(struct usb_device *udev); 103 104 #else 105 106 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 107 { 108 return 0; 109 } 110 111 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg) 112 { 113 return 0; 114 } 115 116 #define usb_autosuspend_device(udev) do {} while (0) 117 static inline int usb_autoresume_device(struct usb_device *udev) 118 { 119 return 0; 120 } 121 122 static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev) 123 { 124 return 0; 125 } 126 127 static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) 128 { 129 return 0; 130 } 131 132 #endif 133 134 extern struct bus_type usb_bus_type; 135 extern struct mutex usb_port_peer_mutex; 136 extern struct device_type usb_device_type; 137 extern struct device_type usb_if_device_type; 138 extern struct device_type usb_ep_device_type; 139 extern struct device_type usb_port_device_type; 140 extern struct usb_device_driver usb_generic_driver; 141 142 static inline int is_usb_device(const struct device *dev) 143 { 144 return dev->type == &usb_device_type; 145 } 146 147 static inline int is_usb_interface(const struct device *dev) 148 { 149 return dev->type == &usb_if_device_type; 150 } 151 152 static inline int is_usb_endpoint(const struct device *dev) 153 { 154 return dev->type == &usb_ep_device_type; 155 } 156 157 static inline int is_usb_port(const struct device *dev) 158 { 159 return dev->type == &usb_port_device_type; 160 } 161 162 static inline int is_root_hub(struct usb_device *udev) 163 { 164 return (udev->parent == NULL); 165 } 166 167 /* Do the same for device drivers and interface drivers. */ 168 169 static inline int is_usb_device_driver(struct device_driver *drv) 170 { 171 return container_of(drv, struct usbdrv_wrap, driver)-> 172 for_devices; 173 } 174 175 /* for labeling diagnostics */ 176 extern const char *usbcore_name; 177 178 /* sysfs stuff */ 179 extern const struct attribute_group *usb_device_groups[]; 180 extern const struct attribute_group *usb_interface_groups[]; 181 182 /* usbfs stuff */ 183 extern struct usb_driver usbfs_driver; 184 extern const struct file_operations usbfs_devices_fops; 185 extern const struct file_operations usbdev_file_operations; 186 extern void usbfs_conn_disc_event(void); 187 188 extern int usb_devio_init(void); 189 extern void usb_devio_cleanup(void); 190 191 /* 192 * Firmware specific cookie identifying a port's location. '0' == no location 193 * data available 194 */ 195 typedef u32 usb_port_location_t; 196 197 /* internal notify stuff */ 198 extern void usb_notify_add_device(struct usb_device *udev); 199 extern void usb_notify_remove_device(struct usb_device *udev); 200 extern void usb_notify_add_bus(struct usb_bus *ubus); 201 extern void usb_notify_remove_bus(struct usb_bus *ubus); 202 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 203 struct usb_hub_descriptor *desc); 204 205 #ifdef CONFIG_ACPI 206 extern int usb_acpi_register(void); 207 extern void usb_acpi_unregister(void); 208 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 209 int port1); 210 #else 211 static inline int usb_acpi_register(void) { return 0; }; 212 static inline void usb_acpi_unregister(void) { }; 213 #endif 214