1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * This header declares the utility functions used by "Gadget Zero", plus 4*4882a593Smuzhiyun * interfaces to its two single-configuration function drivers. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #ifndef __G_ZERO_H 8*4882a593Smuzhiyun #define __G_ZERO_H 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define GZERO_BULK_BUFLEN 4096 11*4882a593Smuzhiyun #define GZERO_QLEN 32 12*4882a593Smuzhiyun #define GZERO_ISOC_INTERVAL 4 13*4882a593Smuzhiyun #define GZERO_ISOC_MAXPACKET 1024 14*4882a593Smuzhiyun #define GZERO_SS_BULK_QLEN 1 15*4882a593Smuzhiyun #define GZERO_SS_ISO_QLEN 8 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun struct usb_zero_options { 18*4882a593Smuzhiyun unsigned pattern; 19*4882a593Smuzhiyun unsigned isoc_interval; 20*4882a593Smuzhiyun unsigned isoc_maxpacket; 21*4882a593Smuzhiyun unsigned isoc_mult; 22*4882a593Smuzhiyun unsigned isoc_maxburst; 23*4882a593Smuzhiyun unsigned bulk_buflen; 24*4882a593Smuzhiyun unsigned qlen; 25*4882a593Smuzhiyun unsigned ss_bulk_qlen; 26*4882a593Smuzhiyun unsigned ss_iso_qlen; 27*4882a593Smuzhiyun }; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun struct f_ss_opts { 30*4882a593Smuzhiyun struct usb_function_instance func_inst; 31*4882a593Smuzhiyun unsigned pattern; 32*4882a593Smuzhiyun unsigned isoc_interval; 33*4882a593Smuzhiyun unsigned isoc_maxpacket; 34*4882a593Smuzhiyun unsigned isoc_mult; 35*4882a593Smuzhiyun unsigned isoc_maxburst; 36*4882a593Smuzhiyun unsigned bulk_buflen; 37*4882a593Smuzhiyun unsigned bulk_qlen; 38*4882a593Smuzhiyun unsigned iso_qlen; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* 41*4882a593Smuzhiyun * Read/write access to configfs attributes is handled by configfs. 42*4882a593Smuzhiyun * 43*4882a593Smuzhiyun * This is to protect the data from concurrent access by read/write 44*4882a593Smuzhiyun * and create symlink/remove symlink. 45*4882a593Smuzhiyun */ 46*4882a593Smuzhiyun struct mutex lock; 47*4882a593Smuzhiyun int refcnt; 48*4882a593Smuzhiyun }; 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun struct f_lb_opts { 51*4882a593Smuzhiyun struct usb_function_instance func_inst; 52*4882a593Smuzhiyun unsigned bulk_buflen; 53*4882a593Smuzhiyun unsigned qlen; 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun /* 56*4882a593Smuzhiyun * Read/write access to configfs attributes is handled by configfs. 57*4882a593Smuzhiyun * 58*4882a593Smuzhiyun * This is to protect the data from concurrent access by read/write 59*4882a593Smuzhiyun * and create symlink/remove symlink. 60*4882a593Smuzhiyun */ 61*4882a593Smuzhiyun struct mutex lock; 62*4882a593Smuzhiyun int refcnt; 63*4882a593Smuzhiyun }; 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun void lb_modexit(void); 66*4882a593Smuzhiyun int lb_modinit(void); 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun /* common utilities */ 69*4882a593Smuzhiyun void disable_endpoints(struct usb_composite_dev *cdev, 70*4882a593Smuzhiyun struct usb_ep *in, struct usb_ep *out, 71*4882a593Smuzhiyun struct usb_ep *iso_in, struct usb_ep *iso_out); 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun #endif /* __G_ZERO_H */ 74