diff options
Diffstat (limited to 'drivers/usb/gadget/function/g_zero.h')
-rw-r--r-- | drivers/usb/gadget/function/g_zero.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/g_zero.h b/drivers/usb/gadget/function/g_zero.h new file mode 100644 index 0000000000..98b8462ad5 --- /dev/null +++ b/drivers/usb/gadget/function/g_zero.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header declares the utility functions used by "Gadget Zero", plus + * interfaces to its two single-configuration function drivers. + */ + +#ifndef __G_ZERO_H +#define __G_ZERO_H + +#define GZERO_BULK_BUFLEN 4096 +#define GZERO_QLEN 32 +#define GZERO_ISOC_INTERVAL 4 +#define GZERO_ISOC_MAXPACKET 1024 +#define GZERO_SS_BULK_QLEN 1 +#define GZERO_SS_ISO_QLEN 8 + +struct usb_zero_options { + unsigned pattern; + unsigned isoc_interval; + unsigned isoc_maxpacket; + unsigned isoc_mult; + unsigned isoc_maxburst; + unsigned bulk_buflen; + unsigned qlen; + unsigned ss_bulk_qlen; + unsigned ss_iso_qlen; +}; + +struct f_ss_opts { + struct usb_function_instance func_inst; + unsigned pattern; + unsigned isoc_interval; + unsigned isoc_maxpacket; + unsigned isoc_mult; + unsigned isoc_maxburst; + unsigned bulk_buflen; + unsigned bulk_qlen; + unsigned iso_qlen; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +struct f_lb_opts { + struct usb_function_instance func_inst; + unsigned bulk_buflen; + unsigned qlen; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; +}; + +void lb_modexit(void); +int lb_modinit(void); + +/* common utilities */ +void disable_endpoints(struct usb_composite_dev *cdev, + struct usb_ep *in, struct usb_ep *out, + struct usb_ep *iso_in, struct usb_ep *iso_out); + +#endif /* __G_ZERO_H */ |