1 /* FSI device & driver interfaces
3 * Copyright (C) IBM Corporation 2016
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
18 #include <linux/device.h>
25 struct fsi_slave
*slave
;
30 extern int fsi_device_read(struct fsi_device
*dev
, uint32_t addr
,
31 void *val
, size_t size
);
32 extern int fsi_device_write(struct fsi_device
*dev
, uint32_t addr
,
33 const void *val
, size_t size
);
34 extern int fsi_device_peek(struct fsi_device
*dev
, void *val
);
36 struct fsi_device_id
{
41 #define FSI_VERSION_ANY 0
43 #define FSI_DEVICE(t) \
44 .engine_type = (t), .version = FSI_VERSION_ANY,
46 #define FSI_DEVICE_VERSIONED(t, v) \
47 .engine_type = (t), .version = (v),
50 struct device_driver drv
;
51 const struct fsi_device_id
*id_table
;
54 #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev)
55 #define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv)
57 extern int fsi_driver_register(struct fsi_driver
*fsi_drv
);
58 extern void fsi_driver_unregister(struct fsi_driver
*fsi_drv
);
60 /* module_fsi_driver() - Helper macro for drivers that don't do
61 * anything special in module init/exit. This eliminates a lot of
62 * boilerplate. Each module may only use this macro once, and
63 * calling it replaces module_init() and module_exit()
65 #define module_fsi_driver(__fsi_driver) \
66 module_driver(__fsi_driver, fsi_driver_register, \
67 fsi_driver_unregister)
69 /* direct slave API */
70 extern int fsi_slave_claim_range(struct fsi_slave
*slave
,
71 uint32_t addr
, uint32_t size
);
72 extern void fsi_slave_release_range(struct fsi_slave
*slave
,
73 uint32_t addr
, uint32_t size
);
74 extern int fsi_slave_read(struct fsi_slave
*slave
, uint32_t addr
,
75 void *val
, size_t size
);
76 extern int fsi_slave_write(struct fsi_slave
*slave
, uint32_t addr
,
77 const void *val
, size_t size
);
79 extern struct bus_type fsi_bus_type
;
80 extern const struct device_type fsi_cdev_type
;
89 extern int fsi_get_new_minor(struct fsi_device
*fdev
, enum fsi_dev_type type
,
90 dev_t
*out_dev
, int *out_index
);
91 extern void fsi_free_minor(dev_t dev
);
93 #endif /* LINUX_FSI_H */