diff options
Diffstat (limited to 'include/linux/usb/gadgetfs.h')
-rw-r--r-- | include/linux/usb/gadgetfs.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/include/linux/usb/gadgetfs.h b/include/linux/usb/gadgetfs.h deleted file mode 100644 index 0bb12e0d4f8f..000000000000 --- a/include/linux/usb/gadgetfs.h +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Filesystem based user-mode API to USB Gadget controller hardware - * - * Other than ep0 operations, most things are done by read() and write() - * on endpoint files found in one directory. They are configured by - * writing descriptors, and then may be used for normal stream style - * i/o requests. When ep0 is configured, the device can enumerate; - * when it's closed, the device disconnects from usb. Operations on - * ep0 require ioctl() operations. - * - * Configuration and device descriptors get written to /dev/gadget/$CHIP, - * which may then be used to read usb_gadgetfs_event structs. The driver - * may activate endpoints as it handles SET_CONFIGURATION setup events, - * or earlier; writing endpoint descriptors to /dev/gadget/$ENDPOINT - * then performing data transfers by reading or writing. - */ - -#ifndef __LINUX_USB_GADGETFS_H -#define __LINUX_USB_GADGETFS_H - -#include <linux/types.h> -#include <linux/ioctl.h> - -#include <linux/usb/ch9.h> - -/* - * Events are delivered on the ep0 file descriptor, when the user mode driver - * reads from this file descriptor after writing the descriptors. Don't - * stop polling this descriptor. - */ - -enum usb_gadgetfs_event_type { - GADGETFS_NOP = 0, - - GADGETFS_CONNECT, - GADGETFS_DISCONNECT, - GADGETFS_SETUP, - GADGETFS_SUSPEND, - /* and likely more ! */ -}; - -/* NOTE: this structure must stay the same size and layout on - * both 32-bit and 64-bit kernels. - */ -struct usb_gadgetfs_event { - union { - /* NOP, DISCONNECT, SUSPEND: nothing - * ... some hardware can't report disconnection - */ - - /* CONNECT: just the speed */ - enum usb_device_speed speed; - - /* SETUP: packet; DATA phase i/o precedes next event - *(setup.bmRequestType & USB_DIR_IN) flags direction - * ... includes SET_CONFIGURATION, SET_INTERFACE - */ - struct usb_ctrlrequest setup; - } u; - enum usb_gadgetfs_event_type type; -}; - - -/* The 'g' code is also used by printer gadget ioctl requests. - * Don't add any colliding codes to either driver, and keep - * them in unique ranges (size 0x20 for now). - */ - -/* endpoint ioctls */ - -/* IN transfers may be reported to the gadget driver as complete - * when the fifo is loaded, before the host reads the data; - * OUT transfers may be reported to the host's "client" driver as - * complete when they're sitting in the FIFO unread. - * THIS returns how many bytes are "unclaimed" in the endpoint fifo - * (needed for precise fault handling, when the hardware allows it) - */ -#define GADGETFS_FIFO_STATUS _IO('g', 1) - -/* discards any unclaimed data in the fifo. */ -#define GADGETFS_FIFO_FLUSH _IO('g', 2) - -/* resets endpoint halt+toggle; used to implement set_interface. - * some hardware (like pxa2xx) can't support this. - */ -#define GADGETFS_CLEAR_HALT _IO('g', 3) - -#endif /* __LINUX_USB_GADGETFS_H */ |