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
|
/*
Broadcom B43 wireless driver
RFKILL support
Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "rfkill.h"
#include "b43.h"
#include "phy_common.h"
#include <linux/kmod.h>
/* Returns TRUE, if the radio is enabled in hardware. */
static bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
{
if (dev->phy.rev >= 3) {
if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
& B43_MMIO_RADIO_HWENABLED_HI_MASK))
return 1;
} else {
if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
& B43_MMIO_RADIO_HWENABLED_LO_MASK)
return 1;
}
return 0;
}
/* The poll callback for the hardware button. */
static void b43_rfkill_poll(struct input_polled_dev *poll_dev)
{
struct b43_wldev *dev = poll_dev->private;
struct b43_wl *wl = dev->wl;
bool enabled;
bool report_change = 0;
mutex_lock(&wl->mutex);
if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {
mutex_unlock(&wl->mutex);
return;
}
enabled = b43_is_hw_radio_enabled(dev);
if (unlikely(enabled != dev->radio_hw_enable)) {
dev->radio_hw_enable = enabled;
report_change = 1;
b43info(wl, "Radio hardware status changed to %s\n",
enabled ? "ENABLED" : "DISABLED");
}
mutex_unlock(&wl->mutex);
/* send the radio switch event to the system - note both a key press
* and a release are required */
if (unlikely(report_change)) {
input_report_key(poll_dev->input, KEY_WLAN, 1);
input_report_key(poll_dev->input, KEY_WLAN, 0);
}
}
/* Called when the RFKILL toggled in software. */
static int b43_rfkill_soft_toggle(void *data, enum rfkill_state state)
{
struct b43_wldev *dev = data;
struct b43_wl *wl = dev->wl;
int err = -EBUSY;
if (!wl->rfkill.registered)
return 0;
mutex_lock(&wl->mutex);
if (b43_status(dev) < B43_STAT_INITIALIZED)
goto out_unlock;
err = 0;
switch (state) {
case RFKILL_STATE_UNBLOCKED:
if (!dev->radio_hw_enable) {
/* No luck. We can't toggle the hardware RF-kill
* button from software. */
err = -EBUSY;
goto out_unlock;
}
if (!dev->phy.radio_on)
b43_software_rfkill(dev, state);
break;
case RFKILL_STATE_SOFT_BLOCKED:
if (dev->phy.radio_on)
b43_software_rfkill(dev, state);
break;
default:
b43warn(wl, "Received unexpected rfkill state %d.\n", state);
break;
}
out_unlock:
mutex_unlock(&wl->mutex);
return err;
}
char * b43_rfkill_led_name(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = &(dev->wl->rfkill);
if (!rfk->registered)
return NULL;
return rfkill_get_led_name(rfk->rfkill);
}
void b43_rfkill_init(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct b43_rfkill *rfk = &(wl->rfkill);
int err;
rfk->registered = 0;
rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
if (!rfk->rfkill)
goto out_error;
snprintf(rfk->name, sizeof(rfk->name),
"b43-%s", wiphy_name(wl->hw->wiphy));
rfk->rfkill->name = rfk->name;
rfk->rfkill->state = RFKILL_STATE_UNBLOCKED;
rfk->rfkill->data = dev;
rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle;
rfk->rfkill->user_claim_unsupported = 1;
rfk->poll_dev = input_allocate_polled_device();
if (!rfk->poll_dev) {
rfkill_free(rfk->rfkill);
goto err_freed_rfk;
}
rfk->poll_dev->private = dev;
rfk->poll_dev->poll = b43_rfkill_poll;
rfk->poll_dev->poll_interval = 1000; /* msecs */
rfk->poll_dev->input->name = rfk->name;
rfk->poll_dev->input->id.bustype = BUS_HOST;
rfk->poll_dev->input->id.vendor = dev->dev->bus->boardinfo.vendor;
rfk->poll_dev->input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_WLAN, rfk->poll_dev->input->keybit);
err = rfkill_register(rfk->rfkill);
if (err)
goto err_free_polldev;
#ifdef CONFIG_RFKILL_INPUT_MODULE
/* B43 RF-kill isn't useful without the rfkill-input subsystem.
* Try to load the module. */
err = request_module("rfkill-input");
if (err)
b43warn(wl, "Failed to load the rfkill-input module. "
"The built-in radio LED will not work.\n");
#endif /* CONFIG_RFKILL_INPUT */
#if !defined(CONFIG_RFKILL_INPUT) && !defined(CONFIG_RFKILL_INPUT_MODULE)
b43warn(wl, "The rfkill-input subsystem is not available. "
"The built-in radio LED will not work.\n");
#endif
err = input_register_polled_device(rfk->poll_dev);
if (err)
goto err_unreg_rfk;
rfk->registered = 1;
return;
err_unreg_rfk:
rfkill_unregister(rfk->rfkill);
err_free_polldev:
input_free_polled_device(rfk->poll_dev);
rfk->poll_dev = NULL;
err_freed_rfk:
rfk->rfkill = NULL;
out_error:
rfk->registered = 0;
b43warn(wl, "RF-kill button init failed\n");
}
void b43_rfkill_exit(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = &(dev->wl->rfkill);
if (!rfk->registered)
return;
rfk->registered = 0;
input_unregister_polled_device(rfk->poll_dev);
rfkill_unregister(rfk->rfkill);
input_free_polled_device(rfk->poll_dev);
rfk->poll_dev = NULL;
rfk->rfkill = NULL;
}
|
