1 /*
2 * Copyright 2023 Google LLC
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include "emul_tester.h"
8
9 #include <zephyr/device.h>
10 #include <zephyr/drivers/emul.h>
11 #include <zephyr/drivers/emul_stub_device.h>
12 #include <zephyr/drivers/i2c.h>
13 #include <zephyr/drivers/i2c_emul.h>
14
15 #define DT_DRV_COMPAT vnd_emul_tester
16
17 struct emul_tester_cfg {
18 int scale;
19 };
20
21 struct emul_tester_data {
22 int action;
23 };
24
emul_tester_set_action(const struct emul * target,int action)25 static int emul_tester_set_action(const struct emul *target, int action)
26 {
27 const struct emul_tester_cfg *cfg = target->cfg;
28 struct emul_tester_data *data = target->data;
29
30 data->action = action * cfg->scale;
31
32 return 0;
33 }
34
emul_tester_get_action(const struct emul * target,int * action)35 static int emul_tester_get_action(const struct emul *target, int *action)
36 {
37 struct emul_tester_data *data = target->data;
38
39 *action = data->action;
40
41 return 0;
42 }
43
emul_tester_transfer(const struct emul * target,struct i2c_msg * msgs,int num_msgs,int addr)44 static int emul_tester_transfer(const struct emul *target, struct i2c_msg *msgs, int num_msgs,
45 int addr)
46 {
47 ARG_UNUSED(target);
48 ARG_UNUSED(msgs);
49 ARG_UNUSED(num_msgs);
50 ARG_UNUSED(addr);
51
52 return -ENOTSUP;
53 }
54
55 static struct i2c_emul_api bus_api = {
56 .transfer = emul_tester_transfer,
57 };
58
59 static const struct emul_tester_backend_api emul_tester_backend_api = {
60 .set_action = emul_tester_set_action,
61 .get_action = emul_tester_get_action,
62 };
63
emul_tester_init(const struct emul * target,const struct device * parent)64 static int emul_tester_init(const struct emul *target, const struct device *parent)
65 {
66 ARG_UNUSED(target);
67 ARG_UNUSED(parent);
68
69 return 0;
70 }
71
72 #define EMUL_TESTER(n) \
73 static struct emul_tester_data emul_tester_data_##n; \
74 static const struct emul_tester_cfg emul_tester_cfg_##n = { \
75 .scale = DT_INST_PROP(n, scale), \
76 }; \
77 EMUL_DT_INST_DEFINE(n, emul_tester_init, &emul_tester_data_##n, &emul_tester_cfg_##n, \
78 &bus_api, &emul_tester_backend_api);
79
80 DT_INST_FOREACH_STATUS_OKAY(EMUL_TESTER)
81
82 DT_INST_FOREACH_STATUS_OKAY(EMUL_STUB_DEVICE)
83
