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 int usb_remove_device(struct usb_device *udev); 41 42 extern int usb_get_device_descriptor(struct usb_device *dev, 43 unsigned int size); 44 extern int usb_set_isoch_delay(struct usb_device *dev); 45 extern int usb_get_bos_descriptor(struct usb_device *dev); 46 extern void usb_release_bos_descriptor(struct usb_device *dev); 47 extern char *usb_cache_string(struct usb_device *udev, int index); 48 extern int usb_set_configuration(struct usb_device *dev, int configuration); 49 extern int usb_choose_configuration(struct usb_device *udev); 50 51 static inline unsigned usb_get_max_power(struct usb_device *udev, 52 struct usb_host_config *c) 53 { 54 /* SuperSpeed power is in 8 mA units; others are in 2 mA units */ 55 unsigned mul = (udev->speed >= USB_SPEED_SUPER ? 8 : 2); 56 57 return c->desc.bMaxPower * mul; 58 } 59 60 extern void usb_kick_hub_wq(struct usb_device *dev); 61 extern int usb_match_one_id_intf(struct usb_device *dev, 62 struct usb_host_interface *intf, 63 const struct usb_device_id *id); 64 extern int usb_match_device(struct usb_device *dev, 65 const struct usb_device_id *id); 66 extern void usb_forced_unbind_intf(struct usb_interface *intf); 67 extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); 68 69 extern void usb_hub_release_all_ports(struct usb_device *hdev, 70 struct usb_dev_state *owner); 71 extern bool usb_device_is_owned(struct usb_device *udev); 72 73 extern int usb_hub_init(void); 74 extern void usb_hub_cleanup(void); 75 extern int usb_major_init(void); 76 extern void usb_major_cleanup(void); 77 extern int usb_device_supports_lpm(struct usb_device *udev); 78 extern int usb_port_disable(struct usb_device *udev); 79 80 #ifdef CONFIG_PM 81 82 extern int usb_suspend(struct device *dev, pm_message_t msg); 83 extern int usb_resume(struct device *dev, pm_message_t msg); 84 extern int usb_resume_complete(struct device *dev); 85 86 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 87 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 88 89 extern void usb_autosuspend_device(struct usb_device *udev); 90 extern int usb_autoresume_device(struct usb_device *udev); 91 extern int usb_remote_wakeup(struct usb_device *dev); 92 extern int usb_runtime_suspend(struct device *dev); 93 extern int usb_runtime_resume(struct device *dev); 94 extern int usb_runtime_idle(struct device *dev); 95 extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev); 96 extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev); 97 98 #else 99 100 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 101 { 102 return 0; 103 } 104 105 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg) 106 { 107 return 0; 108 } 109 110 #define usb_autosuspend_device(udev) do {} while (0) 111 static inline int usb_autoresume_device(struct usb_device *udev) 112 { 113 return 0; 114 } 115 116 static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev) 117 { 118 return 0; 119 } 120 121 static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) 122 { 123 return 0; 124 } 125 126 #endif 127 128 extern struct bus_type usb_bus_type; 129 extern struct mutex usb_port_peer_mutex; 130 extern struct device_type usb_device_type; 131 extern struct device_type usb_if_device_type; 132 extern struct device_type usb_ep_device_type; 133 extern struct device_type usb_port_device_type; 134 extern struct usb_device_driver usb_generic_driver; 135 136 static inline int is_usb_device(const struct device *dev) 137 { 138 return dev->type == &usb_device_type; 139 } 140 141 static inline int is_usb_interface(const struct device *dev) 142 { 143 return dev->type == &usb_if_device_type; 144 } 145 146 static inline int is_usb_endpoint(const struct device *dev) 147 { 148 return dev->type == &usb_ep_device_type; 149 } 150 151 static inline int is_usb_port(const struct device *dev) 152 { 153 return dev->type == &usb_port_device_type; 154 } 155 156 static inline int is_root_hub(struct usb_device *udev) 157 { 158 return (udev->parent == NULL); 159 } 160 161 /* Do the same for device drivers and interface drivers. */ 162 163 static inline int is_usb_device_driver(struct device_driver *drv) 164 { 165 return container_of(drv, struct usbdrv_wrap, driver)-> 166 for_devices; 167 } 168 169 /* for labeling diagnostics */ 170 extern const char *usbcore_name; 171 172 /* sysfs stuff */ 173 extern const struct attribute_group *usb_device_groups[]; 174 extern const struct attribute_group *usb_interface_groups[]; 175 176 /* usbfs stuff */ 177 extern struct usb_driver usbfs_driver; 178 extern const struct file_operations usbfs_devices_fops; 179 extern const struct file_operations usbdev_file_operations; 180 extern void usbfs_conn_disc_event(void); 181 182 extern int usb_devio_init(void); 183 extern void usb_devio_cleanup(void); 184 185 /* 186 * Firmware specific cookie identifying a port's location. '0' == no location 187 * data available 188 */ 189 typedef u32 usb_port_location_t; 190 191 /* internal notify stuff */ 192 extern void usb_notify_add_device(struct usb_device *udev); 193 extern void usb_notify_remove_device(struct usb_device *udev); 194 extern void usb_notify_add_bus(struct usb_bus *ubus); 195 extern void usb_notify_remove_bus(struct usb_bus *ubus); 196 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 197 struct usb_hub_descriptor *desc); 198 199 #ifdef CONFIG_ACPI 200 extern int usb_acpi_register(void); 201 extern void usb_acpi_unregister(void); 202 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 203 int port1); 204 #else 205 static inline int usb_acpi_register(void) { return 0; }; 206 static inline void usb_acpi_unregister(void) { }; 207 #endif 208