3 Broadcom B43 wireless driver
6 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
7 Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
8 Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
9 Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
10 Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
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.
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.
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.
34 static void b43_led_turn_on(struct b43_wldev *dev, u8 led_index,
39 ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
41 ctl &= ~(1 << led_index);
43 ctl |= (1 << led_index);
44 b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
47 static void b43_led_turn_off(struct b43_wldev *dev, u8 led_index,
52 ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
54 ctl |= (1 << led_index);
56 ctl &= ~(1 << led_index);
57 b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
60 static void b43_led_update(struct b43_wldev *dev,
69 radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable);
71 /* The led->state read is racy, but we don't care. In case we raced
72 * with the brightness_set handler, we will be called again soon
73 * to fixup our state. */
75 turn_on = atomic_read(&led->state) != LED_OFF;
78 if (turn_on == led->hw_state)
80 led->hw_state = turn_on;
83 b43_led_turn_on(dev, led->index, led->activelow);
85 b43_led_turn_off(dev, led->index, led->activelow);
88 static void b43_leds_work(struct work_struct *work)
90 struct b43_leds *leds = container_of(work, struct b43_leds, work);
91 struct b43_wl *wl = container_of(leds, struct b43_wl, leds);
92 struct b43_wldev *dev;
94 mutex_lock(&wl->mutex);
95 dev = wl->current_dev;
96 if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED))
99 b43_led_update(dev, &wl->leds.led_tx);
100 b43_led_update(dev, &wl->leds.led_rx);
101 b43_led_update(dev, &wl->leds.led_radio);
102 b43_led_update(dev, &wl->leds.led_assoc);
105 mutex_unlock(&wl->mutex);
108 /* Callback from the LED subsystem. */
109 static void b43_led_brightness_set(struct led_classdev *led_dev,
110 enum led_brightness brightness)
112 struct b43_led *led = container_of(led_dev, struct b43_led, led_dev);
113 struct b43_wl *wl = led->wl;
115 if (likely(!wl->leds.stop)) {
116 atomic_set(&led->state, brightness);
117 ieee80211_queue_work(wl->hw, &wl->leds.work);
121 static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
122 const char *name, const char *default_trigger,
123 u8 led_index, bool activelow)
129 if (!default_trigger)
132 led->index = led_index;
133 led->activelow = activelow;
134 strncpy(led->name, name, sizeof(led->name));
135 atomic_set(&led->state, 0);
137 led->led_dev.name = led->name;
138 led->led_dev.default_trigger = default_trigger;
139 led->led_dev.brightness_set = b43_led_brightness_set;
141 err = led_classdev_register(dev->dev->dev, &led->led_dev);
143 b43warn(dev->wl, "LEDs: Failed to register %s\n", name);
151 static void b43_unregister_led(struct b43_led *led)
155 led_classdev_unregister(&led->led_dev);
159 static void b43_map_led(struct b43_wldev *dev,
161 enum b43_led_behaviour behaviour,
164 struct ieee80211_hw *hw = dev->wl->hw;
165 char name[B43_LED_MAX_NAME_LEN + 1];
167 /* Map the b43 specific LED behaviour value to the
168 * generic LED triggers. */
170 case B43_LED_INACTIVE:
174 case B43_LED_ACTIVITY:
175 case B43_LED_TRANSFER:
176 case B43_LED_APTRANSFER:
177 snprintf(name, sizeof(name),
178 "b43-%s::tx", wiphy_name(hw->wiphy));
179 b43_register_led(dev, &dev->wl->leds.led_tx, name,
180 ieee80211_get_tx_led_name(hw),
181 led_index, activelow);
182 snprintf(name, sizeof(name),
183 "b43-%s::rx", wiphy_name(hw->wiphy));
184 b43_register_led(dev, &dev->wl->leds.led_rx, name,
185 ieee80211_get_rx_led_name(hw),
186 led_index, activelow);
188 case B43_LED_RADIO_ALL:
189 case B43_LED_RADIO_A:
190 case B43_LED_RADIO_B:
191 case B43_LED_MODE_BG:
192 snprintf(name, sizeof(name),
193 "b43-%s::radio", wiphy_name(hw->wiphy));
194 b43_register_led(dev, &dev->wl->leds.led_radio, name,
195 ieee80211_get_radio_led_name(hw),
196 led_index, activelow);
200 snprintf(name, sizeof(name),
201 "b43-%s::assoc", wiphy_name(hw->wiphy));
202 b43_register_led(dev, &dev->wl->leds.led_assoc, name,
203 ieee80211_get_assoc_led_name(hw),
204 led_index, activelow);
207 b43warn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
213 static void b43_led_get_sprominfo(struct b43_wldev *dev,
214 unsigned int led_index,
215 enum b43_led_behaviour *behaviour,
218 struct ssb_bus *bus = dev->sdev->bus;
221 sprom[0] = dev->dev->bus_sprom->gpio0;
222 sprom[1] = dev->dev->bus_sprom->gpio1;
223 sprom[2] = dev->dev->bus_sprom->gpio2;
224 sprom[3] = dev->dev->bus_sprom->gpio3;
226 if (sprom[led_index] == 0xFF) {
227 /* There is no LED information in the SPROM
228 * for this LED. Hardcode it here. */
232 *behaviour = B43_LED_ACTIVITY;
234 if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
235 *behaviour = B43_LED_RADIO_ALL;
238 *behaviour = B43_LED_RADIO_B;
239 if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
240 *behaviour = B43_LED_ASSOC;
243 *behaviour = B43_LED_RADIO_A;
246 *behaviour = B43_LED_OFF;
249 *behaviour = B43_LED_OFF;
254 *behaviour = sprom[led_index] & B43_LED_BEHAVIOUR;
255 *activelow = !!(sprom[led_index] & B43_LED_ACTIVELOW);
259 void b43_leds_init(struct b43_wldev *dev)
263 enum b43_led_behaviour behaviour;
266 /* Sync the RF-kill LED state (if we have one) with radio and switch states. */
267 led = &dev->wl->leds.led_radio;
269 if (dev->phy.radio_on && b43_is_hw_radio_enabled(dev)) {
270 b43_led_turn_on(dev, led->index, led->activelow);
272 atomic_set(&led->state, 1);
274 b43_led_turn_off(dev, led->index, led->activelow);
276 atomic_set(&led->state, 0);
280 /* Initialize TX/RX/ASSOC leds */
281 led = &dev->wl->leds.led_tx;
283 b43_led_turn_off(dev, led->index, led->activelow);
285 atomic_set(&led->state, 0);
287 led = &dev->wl->leds.led_rx;
289 b43_led_turn_off(dev, led->index, led->activelow);
291 atomic_set(&led->state, 0);
293 led = &dev->wl->leds.led_assoc;
295 b43_led_turn_off(dev, led->index, led->activelow);
297 atomic_set(&led->state, 0);
300 /* Initialize other LED states. */
301 for (i = 0; i < B43_MAX_NR_LEDS; i++) {
302 b43_led_get_sprominfo(dev, i, &behaviour, &activelow);
305 b43_led_turn_off(dev, i, activelow);
308 b43_led_turn_on(dev, i, activelow);
311 /* Leave others as-is. */
316 dev->wl->leds.stop = 0;
319 void b43_leds_exit(struct b43_wldev *dev)
321 struct b43_leds *leds = &dev->wl->leds;
323 b43_led_turn_off(dev, leds->led_tx.index, leds->led_tx.activelow);
324 b43_led_turn_off(dev, leds->led_rx.index, leds->led_rx.activelow);
325 b43_led_turn_off(dev, leds->led_assoc.index, leds->led_assoc.activelow);
326 b43_led_turn_off(dev, leds->led_radio.index, leds->led_radio.activelow);
329 void b43_leds_stop(struct b43_wldev *dev)
331 struct b43_leds *leds = &dev->wl->leds;
334 cancel_work_sync(&leds->work);
337 void b43_leds_register(struct b43_wldev *dev)
340 enum b43_led_behaviour behaviour;
343 INIT_WORK(&dev->wl->leds.work, b43_leds_work);
345 /* Register the LEDs to the LED subsystem. */
346 for (i = 0; i < B43_MAX_NR_LEDS; i++) {
347 b43_led_get_sprominfo(dev, i, &behaviour, &activelow);
348 b43_map_led(dev, i, behaviour, activelow);
352 void b43_leds_unregister(struct b43_wl *wl)
354 struct b43_leds *leds = &wl->leds;
356 b43_unregister_led(&leds->led_tx);
357 b43_unregister_led(&leds->led_rx);
358 b43_unregister_led(&leds->led_assoc);
359 b43_unregister_led(&leds->led_radio);