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 #define to_anybuss_client_driver(__drv) container_of_const(__drv, struct anybuss_client_driver, driver)
48
49 static inline void *
anybuss_get_drvdata(const struct anybuss_client * client)50 anybuss_get_drvdata(const struct anybuss_client *client)
51 {
52 return dev_get_drvdata(&client->dev);
53 }
54
55 static inline void
anybuss_set_drvdata(struct anybuss_client * client,void * data)56 anybuss_set_drvdata(struct anybuss_client *client, void *data)
57 {
58 dev_set_drvdata(&client->dev, data);
59 }
60
61 int anybuss_set_power(struct anybuss_client *client, bool power_on);
62
63 struct anybuss_memcfg {
64 u16 input_io;
65 u16 input_dpram;
66 u16 input_total;
67
68 u16 output_io;
69 u16 output_dpram;
70 u16 output_total;
71
72 enum fieldbus_dev_offl_mode offl_mode;
73 };
74
75 int anybuss_start_init(struct anybuss_client *client,
76 const struct anybuss_memcfg *cfg);
77 int anybuss_finish_init(struct anybuss_client *client);
78 int anybuss_read_fbctrl(struct anybuss_client *client, u16 addr,
79 void *buf, size_t count);
80 int anybuss_send_msg(struct anybuss_client *client, u16 cmd_num,
81 const void *buf, size_t count);
82 int anybuss_send_ext(struct anybuss_client *client, u16 cmd_num,
83 const void *buf, size_t count);
84 int anybuss_recv_msg(struct anybuss_client *client, u16 cmd_num,
85 void *buf, size_t count);
86
87 /* these help clients make a struct file_operations */
88 int anybuss_write_input(struct anybuss_client *client,
89 const char __user *buf, size_t size,
90 loff_t *offset);
91 int anybuss_read_output(struct anybuss_client *client,
92 char __user *buf, size_t size,
93 loff_t *offset);
94
95 #endif /* __LINUX_ANYBUSS_CLIENT_H__ */
96