3 Broadcom B43 wireless driver
6 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
7 Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
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.
32 static void b43_led_turn_on(struct b43_wldev *dev, u8 led_index,
35 struct b43_wl *wl = dev->wl;
39 spin_lock_irqsave(&wl->leds_lock, flags);
40 ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
42 ctl &= ~(1 << led_index);
44 ctl |= (1 << led_index);
45 b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
46 spin_unlock_irqrestore(&wl->leds_lock, flags);
49 static void b43_led_turn_off(struct b43_wldev *dev, u8 led_index,
52 struct b43_wl *wl = dev->wl;
56 spin_lock_irqsave(&wl->leds_lock, flags);
57 ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
59 ctl |= (1 << led_index);
61 ctl &= ~(1 << led_index);
62 b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
63 spin_unlock_irqrestore(&wl->leds_lock, flags);
66 /* Callback from the LED subsystem. */
67 static void b43_led_brightness_set(struct led_classdev *led_dev,
68 enum led_brightness brightness)
70 struct b43_led *led = container_of(led_dev, struct b43_led, led_dev);
71 struct b43_wldev *dev = led->dev;
74 /* Checking the radio-enabled status here is slightly racy,
75 * but we want to avoid the locking overhead and we don't care
76 * whether the LED has the wrong state for a second. */
77 radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable);
79 if (brightness == LED_OFF || !radio_enabled)
80 b43_led_turn_off(dev, led->index, led->activelow);
82 b43_led_turn_on(dev, led->index, led->activelow);
85 static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
86 const char *name, char *default_trigger,
87 u8 led_index, bool activelow)
91 b43_led_turn_off(dev, led_index, activelow);
97 led->index = led_index;
98 led->activelow = activelow;
99 strncpy(led->name, name, sizeof(led->name));
101 led->led_dev.name = led->name;
102 led->led_dev.default_trigger = default_trigger;
103 led->led_dev.brightness_set = b43_led_brightness_set;
105 err = led_classdev_register(dev->dev->dev, &led->led_dev);
107 b43warn(dev->wl, "LEDs: Failed to register %s\n", name);
114 static void b43_unregister_led(struct b43_led *led)
118 led_classdev_unregister(&led->led_dev);
119 b43_led_turn_off(led->dev, led->index, led->activelow);
123 static void b43_map_led(struct b43_wldev *dev,
125 enum b43_led_behaviour behaviour,
128 struct ieee80211_hw *hw = dev->wl->hw;
129 char name[B43_LED_MAX_NAME_LEN + 1];
131 /* Map the b43 specific LED behaviour value to the
132 * generic LED triggers. */
134 case B43_LED_INACTIVE:
137 b43_led_turn_off(dev, led_index, activelow);
140 b43_led_turn_on(dev, led_index, activelow);
142 case B43_LED_ACTIVITY:
143 case B43_LED_TRANSFER:
144 case B43_LED_APTRANSFER:
145 snprintf(name, sizeof(name),
146 "b43-%s:tx", wiphy_name(hw->wiphy));
147 b43_register_led(dev, &dev->led_tx, name,
148 ieee80211_get_tx_led_name(hw),
149 led_index, activelow);
150 snprintf(name, sizeof(name),
151 "b43-%s:rx", wiphy_name(hw->wiphy));
152 b43_register_led(dev, &dev->led_rx, name,
153 ieee80211_get_rx_led_name(hw),
154 led_index, activelow);
156 case B43_LED_RADIO_ALL:
157 case B43_LED_RADIO_A:
158 case B43_LED_RADIO_B:
159 case B43_LED_MODE_BG:
160 snprintf(name, sizeof(name),
161 "b43-%s:radio", wiphy_name(hw->wiphy));
162 b43_register_led(dev, &dev->led_radio, name,
163 b43_rfkill_led_name(dev),
164 led_index, activelow);
168 snprintf(name, sizeof(name),
169 "b43-%s:assoc", wiphy_name(hw->wiphy));
170 b43_register_led(dev, &dev->led_assoc, name,
171 ieee80211_get_assoc_led_name(hw),
172 led_index, activelow);
175 b43warn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
181 void b43_leds_init(struct b43_wldev *dev)
183 struct ssb_bus *bus = dev->dev->bus;
186 enum b43_led_behaviour behaviour;
189 sprom[0] = bus->sprom.r1.gpio0;
190 sprom[1] = bus->sprom.r1.gpio1;
191 sprom[2] = bus->sprom.r1.gpio2;
192 sprom[3] = bus->sprom.r1.gpio3;
194 for (i = 0; i < 4; i++) {
195 if (sprom[i] == 0xFF) {
196 /* There is no LED information in the SPROM
197 * for this LED. Hardcode it here. */
201 behaviour = B43_LED_ACTIVITY;
203 if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
204 behaviour = B43_LED_RADIO_ALL;
207 behaviour = B43_LED_RADIO_B;
208 if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
209 behaviour = B43_LED_ASSOC;
212 behaviour = B43_LED_RADIO_A;
215 behaviour = B43_LED_OFF;
222 behaviour = sprom[i] & B43_LED_BEHAVIOUR;
223 activelow = !!(sprom[i] & B43_LED_ACTIVELOW);
225 b43_map_led(dev, i, behaviour, activelow);
229 void b43_leds_exit(struct b43_wldev *dev)
231 b43_unregister_led(&dev->led_tx);
232 b43_unregister_led(&dev->led_rx);
233 b43_unregister_led(&dev->led_assoc);