1 /* 2 * Released under the GPLv2 only. 3 * SPDX-License-Identifier: GPL-2.0 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 77 #ifdef CONFIG_PM 78 79 extern int usb_suspend(struct device *dev, pm_message_t msg); 80 extern int usb_resume(struct device *dev, pm_message_t msg); 81 extern int usb_resume_complete(struct device *dev); 82 83 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg); 84 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg); 85 86 extern void usb_autosuspend_device(struct usb_device *udev); 87 extern int usb_autoresume_device(struct usb_device *udev); 88 extern int usb_remote_wakeup(struct usb_device *dev); 89 extern int usb_runtime_suspend(struct device *dev); 90 extern int usb_runtime_resume(struct device *dev); 91 extern int usb_runtime_idle(struct device *dev); 92 extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable); 93 94 #else 95 96 static inline int usb_port_suspend(struct usb_device *udev, pm_message_t msg) 97 { 98 return 0; 99 } 100 101 static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg) 102 { 103 return 0; 104 } 105 106 #define usb_autosuspend_device(udev) do {} while (0) 107 static inline int usb_autoresume_device(struct usb_device *udev) 108 { 109 return 0; 110 } 111 112 static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) 113 { 114 return 0; 115 } 116 117 #endif 118 119 extern struct bus_type usb_bus_type; 120 extern struct mutex usb_port_peer_mutex; 121 extern struct device_type usb_device_type; 122 extern struct device_type usb_if_device_type; 123 extern struct device_type usb_ep_device_type; 124 extern struct device_type usb_port_device_type; 125 extern struct usb_device_driver usb_generic_driver; 126 127 static inline int is_usb_device(const struct device *dev) 128 { 129 return dev->type == &usb_device_type; 130 } 131 132 static inline int is_usb_interface(const struct device *dev) 133 { 134 return dev->type == &usb_if_device_type; 135 } 136 137 static inline int is_usb_endpoint(const struct device *dev) 138 { 139 return dev->type == &usb_ep_device_type; 140 } 141 142 static inline int is_usb_port(const struct device *dev) 143 { 144 return dev->type == &usb_port_device_type; 145 } 146 147 /* Do the same for device drivers and interface drivers. */ 148 149 static inline int is_usb_device_driver(struct device_driver *drv) 150 { 151 return container_of(drv, struct usbdrv_wrap, driver)-> 152 for_devices; 153 } 154 155 /* for labeling diagnostics */ 156 extern const char *usbcore_name; 157 158 /* sysfs stuff */ 159 extern const struct attribute_group *usb_device_groups[]; 160 extern const struct attribute_group *usb_interface_groups[]; 161 162 /* usbfs stuff */ 163 extern struct mutex usbfs_mutex; 164 extern struct usb_driver usbfs_driver; 165 extern const struct file_operations usbfs_devices_fops; 166 extern const struct file_operations usbdev_file_operations; 167 extern void usbfs_conn_disc_event(void); 168 169 extern int usb_devio_init(void); 170 extern void usb_devio_cleanup(void); 171 172 /* 173 * Firmware specific cookie identifying a port's location. '0' == no location 174 * data available 175 */ 176 typedef u32 usb_port_location_t; 177 178 /* internal notify stuff */ 179 extern void usb_notify_add_device(struct usb_device *udev); 180 extern void usb_notify_remove_device(struct usb_device *udev); 181 extern void usb_notify_add_bus(struct usb_bus *ubus); 182 extern void usb_notify_remove_bus(struct usb_bus *ubus); 183 extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, 184 struct usb_hub_descriptor *desc); 185 186 #ifdef CONFIG_ACPI 187 extern int usb_acpi_register(void); 188 extern void usb_acpi_unregister(void); 189 extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, 190 int port1); 191 #else 192 static inline int usb_acpi_register(void) { return 0; }; 193 static inline void usb_acpi_unregister(void) { }; 194 #endif 195