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8e9f7529 MB |
1 | /* |
2 | ||
3 | Broadcom B43 wireless driver | |
4 | RFKILL support | |
5 | ||
6 | Copyright (c) 2007 Michael Buesch <mb@bu3sch.de> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, | |
21 | Boston, MA 02110-1301, USA. | |
22 | ||
23 | */ | |
24 | ||
25 | #include "rfkill.h" | |
26 | #include "b43.h" | |
27 | ||
28 | ||
42bb4cd5 MB |
29 | /* Returns TRUE, if the radio is enabled in hardware. */ |
30 | static bool b43_is_hw_radio_enabled(struct b43_wldev *dev) | |
8e9f7529 | 31 | { |
42bb4cd5 MB |
32 | if (dev->phy.rev >= 3) { |
33 | if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI) | |
34 | & B43_MMIO_RADIO_HWENABLED_HI_MASK)) | |
35 | return 1; | |
36 | } else { | |
37 | if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO) | |
38 | & B43_MMIO_RADIO_HWENABLED_LO_MASK) | |
39 | return 1; | |
8e9f7529 | 40 | } |
42bb4cd5 | 41 | return 0; |
8e9f7529 MB |
42 | } |
43 | ||
42bb4cd5 MB |
44 | /* The poll callback for the hardware button. */ |
45 | static void b43_rfkill_poll(struct input_polled_dev *poll_dev) | |
8e9f7529 | 46 | { |
42bb4cd5 | 47 | struct b43_wldev *dev = poll_dev->private; |
8e9f7529 | 48 | struct b43_wl *wl = dev->wl; |
42bb4cd5 | 49 | bool enabled; |
35c7e660 | 50 | bool report_change = 0; |
8e9f7529 | 51 | |
42bb4cd5 | 52 | mutex_lock(&wl->mutex); |
8e9f7529 | 53 | B43_WARN_ON(b43_status(dev) < B43_STAT_INITIALIZED); |
42bb4cd5 MB |
54 | enabled = b43_is_hw_radio_enabled(dev); |
55 | if (unlikely(enabled != dev->radio_hw_enable)) { | |
56 | dev->radio_hw_enable = enabled; | |
35c7e660 | 57 | report_change = 1; |
42bb4cd5 MB |
58 | b43info(wl, "Radio hardware status changed to %s\n", |
59 | enabled ? "ENABLED" : "DISABLED"); | |
35c7e660 MB |
60 | } |
61 | mutex_unlock(&wl->mutex); | |
62 | ||
63 | if (unlikely(report_change)) | |
42bb4cd5 | 64 | input_report_key(poll_dev->input, KEY_WLAN, enabled); |
8e9f7529 MB |
65 | } |
66 | ||
80fda03f | 67 | /* Called when the RFKILL toggled in software. */ |
8e9f7529 MB |
68 | static int b43_rfkill_soft_toggle(void *data, enum rfkill_state state) |
69 | { | |
70 | struct b43_wldev *dev = data; | |
71 | struct b43_wl *wl = dev->wl; | |
72 | int err = 0; | |
73 | ||
35c7e660 MB |
74 | if (!wl->rfkill.registered) |
75 | return 0; | |
8e9f7529 | 76 | |
35c7e660 MB |
77 | mutex_lock(&wl->mutex); |
78 | B43_WARN_ON(b43_status(dev) < B43_STAT_INITIALIZED); | |
8e9f7529 MB |
79 | switch (state) { |
80 | case RFKILL_STATE_ON: | |
81 | if (!dev->radio_hw_enable) { | |
82 | /* No luck. We can't toggle the hardware RF-kill | |
83 | * button from software. */ | |
84 | err = -EBUSY; | |
85 | goto out_unlock; | |
86 | } | |
87 | if (!dev->phy.radio_on) | |
88 | b43_radio_turn_on(dev); | |
89 | break; | |
90 | case RFKILL_STATE_OFF: | |
91 | if (dev->phy.radio_on) | |
92 | b43_radio_turn_off(dev, 0); | |
93 | break; | |
94 | } | |
8e9f7529 MB |
95 | out_unlock: |
96 | mutex_unlock(&wl->mutex); | |
97 | ||
98 | return err; | |
99 | } | |
100 | ||
101 | char * b43_rfkill_led_name(struct b43_wldev *dev) | |
102 | { | |
35c7e660 | 103 | struct b43_rfkill *rfk = &(dev->wl->rfkill); |
8e9f7529 | 104 | |
35c7e660 | 105 | if (!rfk->registered) |
8e9f7529 | 106 | return NULL; |
35c7e660 | 107 | return rfkill_get_led_name(rfk->rfkill); |
8e9f7529 MB |
108 | } |
109 | ||
110 | void b43_rfkill_init(struct b43_wldev *dev) | |
111 | { | |
112 | struct b43_wl *wl = dev->wl; | |
113 | struct b43_rfkill *rfk = &(wl->rfkill); | |
114 | int err; | |
115 | ||
35c7e660 | 116 | rfk->registered = 0; |
42bb4cd5 | 117 | |
35c7e660 MB |
118 | rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN); |
119 | if (!rfk->rfkill) | |
120 | goto out_error; | |
8e9f7529 MB |
121 | snprintf(rfk->name, sizeof(rfk->name), |
122 | "b43-%s", wiphy_name(wl->hw->wiphy)); | |
8e9f7529 MB |
123 | rfk->rfkill->name = rfk->name; |
124 | rfk->rfkill->state = RFKILL_STATE_ON; | |
125 | rfk->rfkill->data = dev; | |
126 | rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle; | |
127 | rfk->rfkill->user_claim_unsupported = 1; | |
128 | ||
42bb4cd5 | 129 | rfk->poll_dev = input_allocate_polled_device(); |
35c7e660 MB |
130 | if (!rfk->poll_dev) |
131 | goto err_free_rfk; | |
132 | rfk->poll_dev->private = dev; | |
133 | rfk->poll_dev->poll = b43_rfkill_poll; | |
134 | rfk->poll_dev->poll_interval = 1000; /* msecs */ | |
135 | ||
136 | err = rfkill_register(rfk->rfkill); | |
137 | if (err) | |
138 | goto err_free_polldev; | |
139 | err = input_register_polled_device(rfk->poll_dev); | |
140 | if (err) | |
141 | goto err_unreg_rfk; | |
142 | ||
143 | rfk->registered = 1; | |
144 | ||
145 | return; | |
146 | err_unreg_rfk: | |
147 | rfkill_unregister(rfk->rfkill); | |
148 | err_free_polldev: | |
149 | input_free_polled_device(rfk->poll_dev); | |
150 | rfk->poll_dev = NULL; | |
151 | err_free_rfk: | |
152 | rfkill_free(rfk->rfkill); | |
153 | rfk->rfkill = NULL; | |
154 | out_error: | |
155 | rfk->registered = 0; | |
156 | b43warn(wl, "RF-kill button init failed\n"); | |
8e9f7529 MB |
157 | } |
158 | ||
35c7e660 | 159 | void b43_rfkill_exit(struct b43_wldev *dev) |
8e9f7529 MB |
160 | { |
161 | struct b43_rfkill *rfk = &(dev->wl->rfkill); | |
162 | ||
35c7e660 MB |
163 | if (!rfk->registered) |
164 | return; | |
165 | rfk->registered = 0; | |
166 | ||
167 | input_unregister_polled_device(rfk->poll_dev); | |
168 | rfkill_unregister(rfk->rfkill); | |
42bb4cd5 MB |
169 | input_free_polled_device(rfk->poll_dev); |
170 | rfk->poll_dev = NULL; | |
8e9f7529 MB |
171 | rfkill_free(rfk->rfkill); |
172 | rfk->rfkill = NULL; | |
173 | } |