1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Anybus-S client adapter definitions
4 *
5 * Copyright 2018 Arcx Inc
6 */
7
8 #ifndef __LINUX_ANYBUSS_CLIENT_H__
9 #define __LINUX_ANYBUSS_CLIENT_H__
10
11 #include <linux/device.h>
12 #include <linux/types.h>
13 #include <linux/poll.h>
14
15 /* move to <linux/fieldbus_dev.h> when taking this out of staging */
16 #include "../fieldbus_dev.h"
17
18 struct anybuss_host;
19
20 struct anybuss_client {
21 struct device dev;
22 struct anybuss_host *host;
23 __be16 anybus_id;
24 /*
25 * these can be optionally set by the client to receive event
26 * notifications from the host.
27 */
28 void (*on_area_updated)(struct anybuss_client *client);
29 void (*on_online_changed)(struct anybuss_client *client, bool online);
30 };
31
32 struct anybuss_client_driver {
33 struct device_driver driver;
34 int (*probe)(struct anybuss_client *adev);
35 void (*remove)(struct anybuss_client *adev);
36 u16 anybus_id;
37 };
38
39 int anybuss_client_driver_register(struct anybuss_client_driver *drv);
40 void anybuss_client_driver_unregister(struct anybuss_client_driver *drv);
41
to_anybuss_client(struct device * dev)42 static inline struct anybuss_client *to_anybuss_client(struct device *dev)
43 {
44 return container_of(dev, struct anybuss_client, dev);
45 }
46
47 static inline struct anybuss_client_driver *
to_anybuss_client_driver(struct device_driver * drv)48 to_anybuss_client_driver(struct device_driver *drv)
49 {
50 return container_of(drv, struct anybuss_client_driver, driver);
51 }
52
53 static inline void *
anybuss_get_drvdata(const struct anybuss_client * client)54 anybuss_get_drvdata(const struct anybuss_client *client)
55 {
56 return dev_get_drvdata(&client->dev);
57 }
58
59 static inline void
anybuss_set_drvdata(struct anybuss_client * client,void * data)60 anybuss_set_drvdata(struct anybuss_client *client, void *data)
61 {
62 dev_set_drvdata(&client->dev, data);
63 }
64
65 int anybuss_set_power(struct anybuss_client *client, bool power_on);
66
67 struct anybuss_memcfg {
68 u16 input_io;
69 u16 input_dpram;
70 u16 input_total;
71
72 u16 output_io;
73 u16 output_dpram;
74 u16 output_total;
75
76 enum fieldbus_dev_offl_mode offl_mode;
77 };
78
79 int anybuss_start_init(struct anybuss_client *client,
80 const struct anybuss_memcfg *cfg);
81 int anybuss_finish_init(struct anybuss_client *client);
82 int anybuss_read_fbctrl(struct anybuss_client *client, u16 addr,
83 void *buf, size_t count);
84 int anybuss_send_msg(struct anybuss_client *client, u16 cmd_num,
85 const void *buf, size_t count);
86 int anybuss_send_ext(struct anybuss_client *client, u16 cmd_num,
87 const void *buf, size_t count);
88 int anybuss_recv_msg(struct anybuss_client *client, u16 cmd_num,
89 void *buf, size_t count);
90
91 /* these help clients make a struct file_operations */
92 int anybuss_write_input(struct anybuss_client *client,
93 const char __user *buf, size_t size,
94 loff_t *offset);
95 int anybuss_read_output(struct anybuss_client *client,
96 char __user *buf, size_t size,
97 loff_t *offset);
98
99 #endif /* __LINUX_ANYBUSS_CLIENT_H__ */
100