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//usr/src/linux-headers-5.10.108-0510108/include/linux/c2port.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Silicon Labs C2 port Linux support * * Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it> * Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it> */ #define C2PORT_NAME_LEN 32 struct device; /* * C2 port basic structs */ /* Main struct */ struct c2port_ops; struct c2port_device { unsigned int access:1; unsigned int flash_access:1; int id; char name[C2PORT_NAME_LEN]; struct c2port_ops *ops; struct mutex mutex; /* prevent races during read/write */ struct device *dev; void *private_data; }; /* Basic operations */ struct c2port_ops { /* Flash layout */ unsigned short block_size; /* flash block size in bytes */ unsigned short blocks_num; /* flash blocks number */ /* Enable or disable the access to C2 port */ void (*access)(struct c2port_device *dev, int status); /* Set C2D data line as input/output */ void (*c2d_dir)(struct c2port_device *dev, int dir); /* Read/write C2D data line */ int (*c2d_get)(struct c2port_device *dev); void (*c2d_set)(struct c2port_device *dev, int status); /* Write C2CK clock line */ void (*c2ck_set)(struct c2port_device *dev, int status); }; /* * Exported functions */ extern struct c2port_device *c2port_device_register(char *name, struct c2port_ops *ops, void *devdata); extern void c2port_device_unregister(struct c2port_device *dev);