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Diffstat (limited to 'drivers/net/wireless/b43legacy/leds.c')
-rw-r--r--drivers/net/wireless/b43legacy/leds.c302
1 files changed, 302 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43legacy/leds.c b/drivers/net/wireless/b43legacy/leds.c
new file mode 100644
index 000000000000..498912ddeddb
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/leds.c
@@ -0,0 +1,302 @@
1/*
2
3 Broadcom B43legacy wireless driver
4
5 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
6 Stefano Brivio <st3@riseup.net>
7 Michael Buesch <mb@bu3sch.de>
8 Danny van Dyk <kugelfang@gentoo.org>
9 Andreas Jaggi <andreas.jaggi@waterwave.ch>
10 Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; see the file COPYING. If not, write to
24 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
25 Boston, MA 02110-1301, USA.
26
27*/
28
29#include "leds.h"
30#include "b43legacy.h"
31#include "main.h"
32
33static void b43legacy_led_changestate(struct b43legacy_led *led)
34{
35 struct b43legacy_wldev *dev = led->dev;
36 const int index = led->index;
37 u16 ledctl;
38
39 B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS));
40 B43legacy_WARN_ON(!led->blink_interval);
41 ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
42 ledctl ^= (1 << index);
43 b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
44}
45
46static void b43legacy_led_blink(unsigned long d)
47{
48 struct b43legacy_led *led = (struct b43legacy_led *)d;
49 struct b43legacy_wldev *dev = led->dev;
50 unsigned long flags;
51
52 spin_lock_irqsave(&dev->wl->leds_lock, flags);
53 if (led->blink_interval) {
54 b43legacy_led_changestate(led);
55 mod_timer(&led->blink_timer, jiffies + led->blink_interval);
56 }
57 spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
58}
59
60static void b43legacy_led_blink_start(struct b43legacy_led *led,
61 unsigned long interval)
62{
63 if (led->blink_interval)
64 return;
65 led->blink_interval = interval;
66 b43legacy_led_changestate(led);
67 led->blink_timer.expires = jiffies + interval;
68 add_timer(&led->blink_timer);
69}
70
71static void b43legacy_led_blink_stop(struct b43legacy_led *led, int sync)
72{
73 struct b43legacy_wldev *dev = led->dev;
74 const int index = led->index;
75 u16 ledctl;
76
77 if (!led->blink_interval)
78 return;
79 if (unlikely(sync))
80 del_timer_sync(&led->blink_timer);
81 else
82 del_timer(&led->blink_timer);
83 led->blink_interval = 0;
84
85 /* Make sure the LED is turned off. */
86 B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS));
87 ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
88 if (led->activelow)
89 ledctl |= (1 << index);
90 else
91 ledctl &= ~(1 << index);
92 b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
93}
94
95static void b43legacy_led_init_hardcoded(struct b43legacy_wldev *dev,
96 struct b43legacy_led *led,
97 int led_index)
98{
99 struct ssb_bus *bus = dev->dev->bus;
100
101 /* This function is called, if the behaviour (and activelow)
102 * information for a LED is missing in the SPROM.
103 * We hardcode the behaviour values for various devices here.
104 * Note that the B43legacy_LED_TEST_XXX behaviour values can
105 * be used to figure out which led is mapped to which index.
106 */
107
108 switch (led_index) {
109 case 0:
110 led->behaviour = B43legacy_LED_ACTIVITY;
111 led->activelow = 1;
112 if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
113 led->behaviour = B43legacy_LED_RADIO_ALL;
114 break;
115 case 1:
116 led->behaviour = B43legacy_LED_RADIO_B;
117 if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
118 led->behaviour = B43legacy_LED_ASSOC;
119 break;
120 case 2:
121 led->behaviour = B43legacy_LED_RADIO_A;
122 break;
123 case 3:
124 led->behaviour = B43legacy_LED_OFF;
125 break;
126 default:
127 B43legacy_BUG_ON(1);
128 }
129}
130
131int b43legacy_leds_init(struct b43legacy_wldev *dev)
132{
133 struct b43legacy_led *led;
134 u8 sprom[4];
135 int i;
136
137 sprom[0] = dev->dev->bus->sprom.r1.gpio0;
138 sprom[1] = dev->dev->bus->sprom.r1.gpio1;
139 sprom[2] = dev->dev->bus->sprom.r1.gpio2;
140 sprom[3] = dev->dev->bus->sprom.r1.gpio3;
141
142 for (i = 0; i < B43legacy_NR_LEDS; i++) {
143 led = &(dev->leds[i]);
144 led->index = i;
145 led->dev = dev;
146 setup_timer(&led->blink_timer,
147 b43legacy_led_blink,
148 (unsigned long)led);
149
150 if (sprom[i] == 0xFF)
151 b43legacy_led_init_hardcoded(dev, led, i);
152 else {
153 led->behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
154 led->activelow = !!(sprom[i] &
155 B43legacy_LED_ACTIVELOW);
156 }
157 }
158
159 return 0;
160}
161
162void b43legacy_leds_exit(struct b43legacy_wldev *dev)
163{
164 struct b43legacy_led *led;
165 int i;
166
167 for (i = 0; i < B43legacy_NR_LEDS; i++) {
168 led = &(dev->leds[i]);
169 b43legacy_led_blink_stop(led, 1);
170 }
171 b43legacy_leds_switch_all(dev, 0);
172}
173
174void b43legacy_leds_update(struct b43legacy_wldev *dev, int activity)
175{
176 struct b43legacy_led *led;
177 struct b43legacy_phy *phy = &dev->phy;
178 const int transferring = (jiffies - dev->stats.last_tx)
179 < B43legacy_LED_XFER_THRES;
180 int i;
181 int turn_on;
182 unsigned long interval = 0;
183 u16 ledctl;
184 unsigned long flags;
185
186 spin_lock_irqsave(&dev->wl->leds_lock, flags);
187 ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
188 for (i = 0; i < B43legacy_NR_LEDS; i++) {
189 led = &(dev->leds[i]);
190
191 turn_on = 0;
192 switch (led->behaviour) {
193 case B43legacy_LED_INACTIVE:
194 continue;
195 case B43legacy_LED_OFF:
196 break;
197 case B43legacy_LED_ON:
198 turn_on = 1;
199 break;
200 case B43legacy_LED_ACTIVITY:
201 turn_on = activity;
202 break;
203 case B43legacy_LED_RADIO_ALL:
204 turn_on = phy->radio_on &&
205 b43legacy_is_hw_radio_enabled(dev);
206 break;
207 case B43legacy_LED_RADIO_A:
208 break;
209 case B43legacy_LED_RADIO_B:
210 turn_on = (phy->radio_on &&
211 b43legacy_is_hw_radio_enabled(dev) &&
212 (phy->type == B43legacy_PHYTYPE_B ||
213 phy->type == B43legacy_PHYTYPE_G));
214 break;
215 case B43legacy_LED_MODE_BG:
216 if (phy->type == B43legacy_PHYTYPE_G &&
217 b43legacy_is_hw_radio_enabled(dev))
218 turn_on = 1;
219 break;
220 case B43legacy_LED_TRANSFER:
221 if (transferring)
222 b43legacy_led_blink_start(led,
223 B43legacy_LEDBLINK_MEDIUM);
224 else
225 b43legacy_led_blink_stop(led, 0);
226 continue;
227 case B43legacy_LED_APTRANSFER:
228 if (b43legacy_is_mode(dev->wl,
229 IEEE80211_IF_TYPE_AP)) {
230 if (transferring) {
231 interval = B43legacy_LEDBLINK_FAST;
232 turn_on = 1;
233 }
234 } else {
235 turn_on = 1;
236 if (transferring)
237 interval = B43legacy_LEDBLINK_FAST;
238 else
239 turn_on = 0;
240 }
241 if (turn_on)
242 b43legacy_led_blink_start(led, interval);
243 else
244 b43legacy_led_blink_stop(led, 0);
245 continue;
246 case B43legacy_LED_WEIRD:
247 break;
248 case B43legacy_LED_ASSOC:
249 turn_on = 1;
250#ifdef CONFIG_B43LEGACY_DEBUG
251 case B43legacy_LED_TEST_BLINKSLOW:
252 b43legacy_led_blink_start(led, B43legacy_LEDBLINK_SLOW);
253 continue;
254 case B43legacy_LED_TEST_BLINKMEDIUM:
255 b43legacy_led_blink_start(led,
256 B43legacy_LEDBLINK_MEDIUM);
257 continue;
258 case B43legacy_LED_TEST_BLINKFAST:
259 b43legacy_led_blink_start(led, B43legacy_LEDBLINK_FAST);
260 continue;
261#endif /* CONFIG_B43LEGACY_DEBUG */
262 default:
263 B43legacy_BUG_ON(1);
264 };
265
266 if (led->activelow)
267 turn_on = !turn_on;
268 if (turn_on)
269 ledctl |= (1 << i);
270 else
271 ledctl &= ~(1 << i);
272 }
273 b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
274 spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
275}
276
277void b43legacy_leds_switch_all(struct b43legacy_wldev *dev, int on)
278{
279 struct b43legacy_led *led;
280 u16 ledctl;
281 int i;
282 int bit_on;
283 unsigned long flags;
284
285 spin_lock_irqsave(&dev->wl->leds_lock, flags);
286 ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
287 for (i = 0; i < B43legacy_NR_LEDS; i++) {
288 led = &(dev->leds[i]);
289 if (led->behaviour == B43legacy_LED_INACTIVE)
290 continue;
291 if (on)
292 bit_on = led->activelow ? 0 : 1;
293 else
294 bit_on = led->activelow ? 1 : 0;
295 if (bit_on)
296 ledctl |= (1 << i);
297 else
298 ledctl &= ~(1 << i);
299 }
300 b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
301 spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
302}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 17:42:23 -0500