1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
// SPDX-License-Identifier: GPL-2.0
/*
* Siemens SIMATIC IPC platform driver
*
* Copyright (c) Siemens AG, 2018-2023
*
* Authors:
* Henning Schild <henning.schild@siemens.com>
* Jan Kiszka <jan.kiszka@siemens.com>
* Gerd Haeussler <gerd.haeussler.ext@siemens.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/dmi.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_data/x86/simatic-ipc.h>
#include <linux/platform_device.h>
static struct platform_device *ipc_led_platform_device;
static struct platform_device *ipc_wdt_platform_device;
static struct platform_device *ipc_batt_platform_device;
static const struct dmi_system_id simatic_ipc_whitelist[] = {
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"),
},
},
{}
};
static struct simatic_ipc_platform platform_data;
#define SIMATIC_IPC_MAX_EXTRA_MODULES 2
static struct {
u32 station_id;
u8 led_mode;
u8 wdt_mode;
u8 batt_mode;
char *extra_modules[SIMATIC_IPC_MAX_EXTRA_MODULES];
} device_modes[] = {
{SIMATIC_IPC_IPC127E,
SIMATIC_IPC_DEVICE_127E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_127E,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPC227D,
SIMATIC_IPC_DEVICE_227D, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPC227E,
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPC227G,
SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G,
{ "nct6775", "w83627hf_wdt" }},
{SIMATIC_IPC_IPC277G,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G,
{ "nct6775", "w83627hf_wdt" }},
{SIMATIC_IPC_IPC277E,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPC427D,
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPC427E,
SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPC477E,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPCBX_39A,
SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_39A,
{ "nct6775", "w83627hf_wdt" }},
{SIMATIC_IPC_IPCPX_39A,
SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_39A,
{ "nct6775", "w83627hf_wdt" }},
{SIMATIC_IPC_IPCBX_21A,
SIMATIC_IPC_DEVICE_BX_21A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_21A,
{ "emc1403", NULL }},
{SIMATIC_IPC_IPCBX_56A,
SIMATIC_IPC_DEVICE_BX_59A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_59A,
{ "emc1403", "w83627hf_wdt" }},
{SIMATIC_IPC_IPCBX_59A,
SIMATIC_IPC_DEVICE_BX_59A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_59A,
{ "emc1403", "w83627hf_wdt" }},
};
static int register_platform_devices(u32 station_id)
{
u8 ledmode = SIMATIC_IPC_DEVICE_NONE;
u8 wdtmode = SIMATIC_IPC_DEVICE_NONE;
u8 battmode = SIMATIC_IPC_DEVICE_NONE;
char *pdevname;
int i;
for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
if (device_modes[i].station_id == station_id) {
ledmode = device_modes[i].led_mode;
wdtmode = device_modes[i].wdt_mode;
battmode = device_modes[i].batt_mode;
break;
}
}
if (battmode != SIMATIC_IPC_DEVICE_NONE) {
pdevname = KBUILD_MODNAME "_batt";
if (battmode == SIMATIC_IPC_DEVICE_127E)
pdevname = KBUILD_MODNAME "_batt_apollolake";
if (battmode == SIMATIC_IPC_DEVICE_BX_21A)
pdevname = KBUILD_MODNAME "_batt_elkhartlake";
if (battmode == SIMATIC_IPC_DEVICE_227G ||
battmode == SIMATIC_IPC_DEVICE_BX_39A ||
battmode == SIMATIC_IPC_DEVICE_BX_59A)
pdevname = KBUILD_MODNAME "_batt_f7188x";
platform_data.devmode = battmode;
ipc_batt_platform_device =
platform_device_register_data(NULL, pdevname,
PLATFORM_DEVID_NONE, &platform_data,
sizeof(struct simatic_ipc_platform));
if (IS_ERR(ipc_batt_platform_device))
return PTR_ERR(ipc_batt_platform_device);
pr_debug("device=%s created\n",
ipc_batt_platform_device->name);
}
if (ledmode != SIMATIC_IPC_DEVICE_NONE) {
pdevname = KBUILD_MODNAME "_leds";
if (ledmode == SIMATIC_IPC_DEVICE_127E)
pdevname = KBUILD_MODNAME "_leds_gpio_apollolake";
if (ledmode == SIMATIC_IPC_DEVICE_227G || ledmode == SIMATIC_IPC_DEVICE_BX_59A)
pdevname = KBUILD_MODNAME "_leds_gpio_f7188x";
if (ledmode == SIMATIC_IPC_DEVICE_BX_21A)
pdevname = KBUILD_MODNAME "_leds_gpio_elkhartlake";
platform_data.devmode = ledmode;
ipc_led_platform_device =
platform_device_register_data(NULL,
pdevname, PLATFORM_DEVID_NONE,
&platform_data,
sizeof(struct simatic_ipc_platform));
if (IS_ERR(ipc_led_platform_device))
return PTR_ERR(ipc_led_platform_device);
pr_debug("device=%s created\n",
ipc_led_platform_device->name);
}
if (wdtmode != SIMATIC_IPC_DEVICE_NONE) {
platform_data.devmode = wdtmode;
ipc_wdt_platform_device =
platform_device_register_data(NULL,
KBUILD_MODNAME "_wdt", PLATFORM_DEVID_NONE,
&platform_data,
sizeof(struct simatic_ipc_platform));
if (IS_ERR(ipc_wdt_platform_device))
return PTR_ERR(ipc_wdt_platform_device);
pr_debug("device=%s created\n",
ipc_wdt_platform_device->name);
}
if (ledmode == SIMATIC_IPC_DEVICE_NONE &&
wdtmode == SIMATIC_IPC_DEVICE_NONE &&
battmode == SIMATIC_IPC_DEVICE_NONE) {
pr_warn("unsupported IPC detected, station id=%08x\n",
station_id);
return -EINVAL;
}
return 0;
}
static void request_additional_modules(u32 station_id)
{
char **extra_modules = NULL;
int i;
for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
if (device_modes[i].station_id == station_id) {
extra_modules = device_modes[i].extra_modules;
break;
}
}
if (!extra_modules)
return;
for (i = 0; i < SIMATIC_IPC_MAX_EXTRA_MODULES; i++) {
if (extra_modules[i])
request_module(extra_modules[i]);
else
break;
}
}
static int __init simatic_ipc_init_module(void)
{
const struct dmi_system_id *match;
u32 station_id;
int err;
match = dmi_first_match(simatic_ipc_whitelist);
if (!match)
return 0;
err = dmi_walk(simatic_ipc_find_dmi_entry_helper, &station_id);
if (err || station_id == SIMATIC_IPC_INVALID_STATION_ID) {
pr_warn("DMI entry %d not found\n", SIMATIC_IPC_DMI_ENTRY_OEM);
return 0;
}
request_additional_modules(station_id);
return register_platform_devices(station_id);
}
static void __exit simatic_ipc_exit_module(void)
{
platform_device_unregister(ipc_led_platform_device);
ipc_led_platform_device = NULL;
platform_device_unregister(ipc_wdt_platform_device);
ipc_wdt_platform_device = NULL;
platform_device_unregister(ipc_batt_platform_device);
ipc_batt_platform_device = NULL;
}
module_init(simatic_ipc_init_module);
module_exit(simatic_ipc_exit_module);
MODULE_DESCRIPTION("Siemens SIMATIC IPC platform driver");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Gerd Haeussler <gerd.haeussler.ext@siemens.com>");
MODULE_ALIAS("dmi:*:svnSIEMENSAG:*");
|
