diff options
Diffstat (limited to 'include/linux/usb/ch9.h')
| -rw-r--r-- | include/linux/usb/ch9.h | 57 |
1 files changed, 26 insertions, 31 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 523aa088f6ab..c93b410b314a 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -3,19 +3,16 @@ * This file holds USB constants and structures that are needed for * USB device APIs. These are used by the USB device model, which is * defined in chapter 9 of the USB 2.0 specification and in the - * Wireless USB 1.0 (spread around). Linux has several APIs in C that + * Wireless USB 1.0 spec (now defunct). Linux has several APIs in C that * need these: * - * - the master/host side Linux-USB kernel driver API; + * - the host side Linux-USB kernel driver API; * - the "usbfs" user space API; and - * - the Linux "gadget" slave/device/peripheral side driver API. + * - the Linux "gadget" device/peripheral side driver API. * * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems - * act either as a USB master/host or as a USB slave/device. That means - * the master and slave side APIs benefit from working well together. - * - * There's also "Wireless USB", using low power short range radios for - * peripheral interconnection but otherwise building on the USB framework. + * act either as a USB host or as a USB device. That means the host and + * device side APIs benefit from working well together. * * Note all descriptors are declared '__attribute__((packed))' so that: * @@ -33,33 +30,31 @@ #ifndef __LINUX_USB_CH9_H #define __LINUX_USB_CH9_H -#include <linux/device.h> #include <uapi/linux/usb/ch9.h> -/** - * usb_speed_string() - Returns human readable-name of the speed. - * @speed: The speed to return human-readable name for. If it's not - * any of the speeds defined in usb_device_speed enum, string for - * USB_SPEED_UNKNOWN will be returned. - */ -extern const char *usb_speed_string(enum usb_device_speed speed); +/* USB 3.2 SuperSpeed Plus phy signaling rate generation and lane count */ -/** - * usb_get_maximum_speed - Get maximum requested speed for a given USB - * controller. - * @dev: Pointer to the given USB controller device - * - * The function gets the maximum speed string from property "maximum-speed", - * and returns the corresponding enum usb_device_speed. - */ -extern enum usb_device_speed usb_get_maximum_speed(struct device *dev); +enum usb_ssp_rate { + USB_SSP_GEN_UNKNOWN = 0, + USB_SSP_GEN_2x1, + USB_SSP_GEN_1x2, + USB_SSP_GEN_2x2, +}; -/** - * usb_state_string - Returns human readable name for the state. - * @state: The state to return a human-readable name for. If it's not - * any of the states devices in usb_device_state_string enum, - * the string UNKNOWN will be returned. - */ +struct device; + +extern const char *usb_ep_type_string(int ep_type); +extern const char *usb_speed_string(enum usb_device_speed speed); +extern enum usb_device_speed usb_get_maximum_speed(struct device *dev); +extern enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev); extern const char *usb_state_string(enum usb_device_state state); +unsigned int usb_decode_interval(const struct usb_endpoint_descriptor *epd, + enum usb_device_speed speed); + +#ifdef CONFIG_TRACING +extern const char *usb_decode_ctrl(char *str, size_t size, __u8 bRequestType, + __u8 bRequest, __u16 wValue, __u16 wIndex, + __u16 wLength); +#endif #endif /* __LINUX_USB_CH9_H */ |