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
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
Broadcom B43 wireless driver
LED control
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
*/
#include "b43legacy.h"
#include "leds.h"
#include "rfkill.h"
static void b43legacy_led_turn_on(struct b43legacy_wldev *dev, u8 led_index,
bool activelow)
{
struct b43legacy_wl *wl = dev->wl;
unsigned long flags;
u16 ctl;
spin_lock_irqsave(&wl->leds_lock, flags);
ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
if (activelow)
ctl &= ~(1 << led_index);
else
ctl |= (1 << led_index);
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
spin_unlock_irqrestore(&wl->leds_lock, flags);
}
static void b43legacy_led_turn_off(struct b43legacy_wldev *dev, u8 led_index,
bool activelow)
{
struct b43legacy_wl *wl = dev->wl;
unsigned long flags;
u16 ctl;
spin_lock_irqsave(&wl->leds_lock, flags);
ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
if (activelow)
ctl |= (1 << led_index);
else
ctl &= ~(1 << led_index);
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
spin_unlock_irqrestore(&wl->leds_lock, flags);
}
/* Callback from the LED subsystem. */
static void b43legacy_led_brightness_set(struct led_classdev *led_dev,
enum led_brightness brightness)
{
struct b43legacy_led *led = container_of(led_dev, struct b43legacy_led,
led_dev);
struct b43legacy_wldev *dev = led->dev;
bool radio_enabled;
/* Checking the radio-enabled status here is slightly racy,
* but we want to avoid the locking overhead and we don't care
* whether the LED has the wrong state for a second. */
radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable);
if (brightness == LED_OFF || !radio_enabled)
b43legacy_led_turn_off(dev, led->index, led->activelow);
else
b43legacy_led_turn_on(dev, led->index, led->activelow);
}
static int b43legacy_register_led(struct b43legacy_wldev *dev,
struct b43legacy_led *led,
const char *name,
const char *default_trigger,
u8 led_index, bool activelow)
{
int err;
b43legacy_led_turn_off(dev, led_index, activelow);
if (led->dev)
return -EEXIST;
if (!default_trigger)
return -EINVAL;
led->dev = dev;
led->index = led_index;
led->activelow = activelow;
strlcpy(led->name, name, sizeof(led->name));
led->led_dev.name = led->name;
led->led_dev.default_trigger = default_trigger;
led->led_dev.brightness_set = b43legacy_led_brightness_set;
err = led_classdev_register(dev->dev->dev, &led->led_dev);
if (err) {
b43legacywarn(dev->wl, "LEDs: Failed to register %s\n", name);
led->dev = NULL;
return err;
}
return 0;
}
static void b43legacy_unregister_led(struct b43legacy_led *led)
{
if (!led->dev)
return;
led_classdev_unregister(&led->led_dev);
b43legacy_led_turn_off(led->dev, led->index, led->activelow);
led->dev = NULL;
}
static void b43legacy_map_led(struct b43legacy_wldev *dev,
u8 led_index,
enum b43legacy_led_behaviour behaviour,
bool activelow)
{
struct ieee80211_hw *hw = dev->wl->hw;
char name[B43legacy_LED_MAX_NAME_LEN + 1];
/* Map the b43 specific LED behaviour value to the
* generic LED triggers. */
switch (behaviour) {
case B43legacy_LED_INACTIVE:
break;
case B43legacy_LED_OFF:
b43legacy_led_turn_off(dev, led_index, activelow);
break;
case B43legacy_LED_ON:
b43legacy_led_turn_on(dev, led_index, activelow);
break;
case B43legacy_LED_ACTIVITY:
case B43legacy_LED_TRANSFER:
case B43legacy_LED_APTRANSFER:
snprintf(name, sizeof(name),
"b43legacy-%s::tx", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_tx, name,
ieee80211_get_tx_led_name(hw),
led_index, activelow);
snprintf(name, sizeof(name),
"b43legacy-%s::rx", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_rx, name,
ieee80211_get_rx_led_name(hw),
led_index, activelow);
break;
case B43legacy_LED_RADIO_ALL:
case B43legacy_LED_RADIO_A:
case B43legacy_LED_RADIO_B:
case B43legacy_LED_MODE_BG:
snprintf(name, sizeof(name),
"b43legacy-%s::radio", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_radio, name,
ieee80211_get_radio_led_name(hw),
led_index, activelow);
/* Sync the RF-kill LED state with radio and switch states. */
if (dev->phy.radio_on && b43legacy_is_hw_radio_enabled(dev))
b43legacy_led_turn_on(dev, led_index, activelow);
break;
case B43legacy_LED_WEIRD:
case B43legacy_LED_ASSOC:
snprintf(name, sizeof(name),
"b43legacy-%s::assoc", wiphy_name(hw->wiphy));
b43legacy_register_led(dev, &dev->led_assoc, name,
ieee80211_get_assoc_led_name(hw),
led_index, activelow);
break;
default:
b43legacywarn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
behaviour);
break;
}
}
void b43legacy_leds_init(struct b43legacy_wldev *dev)
{
struct ssb_bus *bus = dev->dev->bus;
u8 sprom[4];
int i;
enum b43legacy_led_behaviour behaviour;
bool activelow;
sprom[0] = bus->sprom.gpio0;
sprom[1] = bus->sprom.gpio1;
sprom[2] = bus->sprom.gpio2;
sprom[3] = bus->sprom.gpio3;
for (i = 0; i < 4; i++) {
if (sprom[i] == 0xFF) {
/* There is no LED information in the SPROM
* for this LED. Hardcode it here. */
activelow = false;
switch (i) {
case 0:
behaviour = B43legacy_LED_ACTIVITY;
activelow = true;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
behaviour = B43legacy_LED_RADIO_ALL;
break;
case 1:
behaviour = B43legacy_LED_RADIO_B;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
behaviour = B43legacy_LED_ASSOC;
break;
case 2:
behaviour = B43legacy_LED_RADIO_A;
break;
case 3:
behaviour = B43legacy_LED_OFF;
break;
default:
B43legacy_WARN_ON(1);
return;
}
} else {
behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW);
}
b43legacy_map_led(dev, i, behaviour, activelow);
}
}
void b43legacy_leds_exit(struct b43legacy_wldev *dev)
{
b43legacy_unregister_led(&dev->led_tx);
b43legacy_unregister_led(&dev->led_rx);
b43legacy_unregister_led(&dev->led_assoc);
b43legacy_unregister_led(&dev->led_radio);
}
|
