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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
c215ab9a BH |
2 | /* |
3 | * Support for rfkill on some Fujitsu-Siemens Amilo laptops. | |
4 | * Copyright 2011 Ben Hutchings. | |
5 | * | |
6 | * Based in part on the fsam7440 driver, which is: | |
7 | * Copyright 2005 Alejandro Vidal Mata & Javier Vidal Mata. | |
8 | * and on the fsaa1655g driver, which is: | |
9 | * Copyright 2006 Martin Večeřa. | |
c215ab9a BH |
10 | */ |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/dmi.h> | |
14 | #include <linux/i8042.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/rfkill.h> | |
19 | ||
20 | /* | |
21 | * These values were obtained from disassembling and debugging the | |
22 | * PM.exe program installed in the Fujitsu-Siemens AMILO A1655G | |
23 | */ | |
24 | #define A1655_WIFI_COMMAND 0x10C5 | |
25 | #define A1655_WIFI_ON 0x25 | |
26 | #define A1655_WIFI_OFF 0x45 | |
27 | ||
28 | static int amilo_a1655_rfkill_set_block(void *data, bool blocked) | |
29 | { | |
30 | u8 param = blocked ? A1655_WIFI_OFF : A1655_WIFI_ON; | |
31 | int rc; | |
32 | ||
33 | i8042_lock_chip(); | |
34 | rc = i8042_command(¶m, A1655_WIFI_COMMAND); | |
35 | i8042_unlock_chip(); | |
36 | return rc; | |
37 | } | |
38 | ||
39 | static const struct rfkill_ops amilo_a1655_rfkill_ops = { | |
40 | .set_block = amilo_a1655_rfkill_set_block | |
41 | }; | |
42 | ||
43 | /* | |
44 | * These values were obtained from disassembling the PM.exe program | |
45 | * installed in the Fujitsu-Siemens AMILO M 7440 | |
46 | */ | |
47 | #define M7440_PORT1 0x118f | |
48 | #define M7440_PORT2 0x118e | |
49 | #define M7440_RADIO_ON1 0x12 | |
50 | #define M7440_RADIO_ON2 0x80 | |
51 | #define M7440_RADIO_OFF1 0x10 | |
52 | #define M7440_RADIO_OFF2 0x00 | |
53 | ||
54 | static int amilo_m7440_rfkill_set_block(void *data, bool blocked) | |
55 | { | |
56 | u8 val1 = blocked ? M7440_RADIO_OFF1 : M7440_RADIO_ON1; | |
57 | u8 val2 = blocked ? M7440_RADIO_OFF2 : M7440_RADIO_ON2; | |
58 | ||
59 | outb(val1, M7440_PORT1); | |
60 | outb(val2, M7440_PORT2); | |
61 | ||
62 | /* Check whether the state has changed correctly */ | |
63 | if (inb(M7440_PORT1) != val1 || inb(M7440_PORT2) != val2) | |
64 | return -EIO; | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | static const struct rfkill_ops amilo_m7440_rfkill_ops = { | |
70 | .set_block = amilo_m7440_rfkill_set_block | |
71 | }; | |
72 | ||
b859f159 | 73 | static const struct dmi_system_id amilo_rfkill_id_table[] = { |
c215ab9a BH |
74 | { |
75 | .matches = { | |
76 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
77 | DMI_MATCH(DMI_BOARD_NAME, "AMILO A1655"), | |
78 | }, | |
79 | .driver_data = (void *)&amilo_a1655_rfkill_ops | |
80 | }, | |
0be18a8e JM |
81 | { |
82 | .matches = { | |
83 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
84 | DMI_MATCH(DMI_BOARD_NAME, "AMILO L1310"), | |
85 | }, | |
86 | .driver_data = (void *)&amilo_a1655_rfkill_ops | |
87 | }, | |
c215ab9a BH |
88 | { |
89 | .matches = { | |
90 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
91 | DMI_MATCH(DMI_BOARD_NAME, "AMILO M7440"), | |
92 | }, | |
93 | .driver_data = (void *)&amilo_m7440_rfkill_ops | |
94 | }, | |
95 | {} | |
96 | }; | |
97 | ||
98 | static struct platform_device *amilo_rfkill_pdev; | |
99 | static struct rfkill *amilo_rfkill_dev; | |
100 | ||
b859f159 | 101 | static int amilo_rfkill_probe(struct platform_device *device) |
c215ab9a | 102 | { |
41603e97 | 103 | int rc; |
c215ab9a BH |
104 | const struct dmi_system_id *system_id = |
105 | dmi_first_match(amilo_rfkill_id_table); | |
41603e97 JJ |
106 | |
107 | if (!system_id) | |
108 | return -ENXIO; | |
c215ab9a BH |
109 | |
110 | amilo_rfkill_dev = rfkill_alloc(KBUILD_MODNAME, &device->dev, | |
111 | RFKILL_TYPE_WLAN, | |
112 | system_id->driver_data, NULL); | |
113 | if (!amilo_rfkill_dev) | |
114 | return -ENOMEM; | |
115 | ||
116 | rc = rfkill_register(amilo_rfkill_dev); | |
117 | if (rc) | |
118 | goto fail; | |
119 | ||
120 | return 0; | |
121 | ||
122 | fail: | |
123 | rfkill_destroy(amilo_rfkill_dev); | |
124 | return rc; | |
125 | } | |
126 | ||
127 | static int amilo_rfkill_remove(struct platform_device *device) | |
128 | { | |
129 | rfkill_unregister(amilo_rfkill_dev); | |
130 | rfkill_destroy(amilo_rfkill_dev); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | static struct platform_driver amilo_rfkill_driver = { | |
135 | .driver = { | |
136 | .name = KBUILD_MODNAME, | |
c215ab9a BH |
137 | }, |
138 | .probe = amilo_rfkill_probe, | |
139 | .remove = amilo_rfkill_remove, | |
140 | }; | |
141 | ||
142 | static int __init amilo_rfkill_init(void) | |
143 | { | |
144 | int rc; | |
145 | ||
146 | if (dmi_first_match(amilo_rfkill_id_table) == NULL) | |
147 | return -ENODEV; | |
148 | ||
149 | rc = platform_driver_register(&amilo_rfkill_driver); | |
150 | if (rc) | |
151 | return rc; | |
152 | ||
153 | amilo_rfkill_pdev = platform_device_register_simple(KBUILD_MODNAME, -1, | |
154 | NULL, 0); | |
155 | if (IS_ERR(amilo_rfkill_pdev)) { | |
156 | rc = PTR_ERR(amilo_rfkill_pdev); | |
157 | goto fail; | |
158 | } | |
159 | ||
160 | return 0; | |
161 | ||
162 | fail: | |
163 | platform_driver_unregister(&amilo_rfkill_driver); | |
164 | return rc; | |
165 | } | |
166 | ||
167 | static void __exit amilo_rfkill_exit(void) | |
168 | { | |
169 | platform_device_unregister(amilo_rfkill_pdev); | |
170 | platform_driver_unregister(&amilo_rfkill_driver); | |
171 | } | |
172 | ||
173 | MODULE_AUTHOR("Ben Hutchings <ben@decadent.org.uk>"); | |
174 | MODULE_LICENSE("GPL"); | |
175 | MODULE_DEVICE_TABLE(dmi, amilo_rfkill_id_table); | |
176 | ||
177 | module_init(amilo_rfkill_init); | |
178 | module_exit(amilo_rfkill_exit); |