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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Silicon Labs C2 port Linux support
- *
- * Copyright (c) 2007 Rodolfo Giometti <[email protected]>
- * Copyright (c) 2007 Eurotech S.p.A. <[email protected]>
- */
- #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);
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