-/*
-
- 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 <mb@bu3sch.de>
- Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
- Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
-*/
-
-#include "b43.h"
-#include "leds.h"
-
-
-static void b43_led_turn_on(struct b43_wldev *dev, u8 led_index,
- bool activelow)
-{
- struct b43_wl *wl = dev->wl;
- unsigned long flags;
- u16 ctl;
-
- spin_lock_irqsave(&wl->leds_lock, flags);
- ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
- if (activelow)
- ctl &= ~(1 << led_index);
- else
- ctl |= (1 << led_index);
- b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
- spin_unlock_irqrestore(&wl->leds_lock, flags);
-}
-
-static void b43_led_turn_off(struct b43_wldev *dev, u8 led_index,
- bool activelow)
-{
- struct b43_wl *wl = dev->wl;
- unsigned long flags;
- u16 ctl;
-
- spin_lock_irqsave(&wl->leds_lock, flags);
- ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
- if (activelow)
- ctl |= (1 << led_index);
- else
- ctl &= ~(1 << led_index);
- b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
- spin_unlock_irqrestore(&wl->leds_lock, flags);
-}
-
-/* Callback from the LED subsystem. */
-static void b43_led_brightness_set(struct led_classdev *led_dev,
- enum led_brightness brightness)
-{
- struct b43_led *led = container_of(led_dev, struct b43_led, led_dev);
- struct b43_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)
- b43_led_turn_off(dev, led->index, led->activelow);
- else
- b43_led_turn_on(dev, led->index, led->activelow);
-}
-
-static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
- const char *name, char *default_trigger,
- u8 led_index, bool activelow)
-{
- int err;
-
- b43_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;
- strncpy(led->name, name, sizeof(led->name));
-
- led->led_dev.name = led->name;
- led->led_dev.default_trigger = default_trigger;
- led->led_dev.brightness_set = b43_led_brightness_set;
-
- err = led_classdev_register(dev->dev->dev, &led->led_dev);
- if (err) {
- b43warn(dev->wl, "LEDs: Failed to register %s\n", name);
- led->dev = NULL;
- return err;
- }
- return 0;
-}
-
-static void b43_unregister_led(struct b43_led *led)
-{
- if (!led->dev)
- return;
- led_classdev_unregister(&led->led_dev);
- b43_led_turn_off(led->dev, led->index, led->activelow);
- led->dev = NULL;
-}
-
-static void b43_map_led(struct b43_wldev *dev,
- u8 led_index,
- enum b43_led_behaviour behaviour,
- bool activelow)
-{
- struct ieee80211_hw *hw = dev->wl->hw;
- char name[B43_LED_MAX_NAME_LEN + 1];
-
- /* Map the b43 specific LED behaviour value to the
- * generic LED triggers. */
- switch (behaviour) {
- case B43_LED_INACTIVE:
- break;
- case B43_LED_OFF:
- b43_led_turn_off(dev, led_index, activelow);
- break;
- case B43_LED_ON:
- b43_led_turn_on(dev, led_index, activelow);
- break;
- case B43_LED_ACTIVITY:
- case B43_LED_TRANSFER:
- case B43_LED_APTRANSFER:
- snprintf(name, sizeof(name),
- "b43-%s::tx", wiphy_name(hw->wiphy));
- b43_register_led(dev, &dev->led_tx, name,
- ieee80211_get_tx_led_name(hw),
- led_index, activelow);
- snprintf(name, sizeof(name),
- "b43-%s::rx", wiphy_name(hw->wiphy));
- b43_register_led(dev, &dev->led_rx, name,
- ieee80211_get_rx_led_name(hw),
- led_index, activelow);
- break;
- case B43_LED_RADIO_ALL:
- case B43_LED_RADIO_A:
- case B43_LED_RADIO_B:
- case B43_LED_MODE_BG:
- snprintf(name, sizeof(name),
- "b43-%s::radio", wiphy_name(hw->wiphy));
- b43_register_led(dev, &dev->led_radio, name,
- b43_rfkill_led_name(dev),
- led_index, activelow);
- /* Sync the RF-kill LED state with the switch state. */
- if (dev->radio_hw_enable)
- b43_led_turn_on(dev, led_index, activelow);
- break;
- case B43_LED_WEIRD:
- case B43_LED_ASSOC:
- snprintf(name, sizeof(name),
- "b43-%s::assoc", wiphy_name(hw->wiphy));
- b43_register_led(dev, &dev->led_assoc, name,
- ieee80211_get_assoc_led_name(hw),
- led_index, activelow);
- break;
- default:
- b43warn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
- behaviour);
- break;
- }
-}
-
-void b43_leds_init(struct b43_wldev *dev)
-{
- struct ssb_bus *bus = dev->dev->bus;
- u8 sprom[4];
- int i;
- enum b43_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 = 0;
- switch (i) {
- case 0:
- behaviour = B43_LED_ACTIVITY;
- activelow = 1;
- if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
- behaviour = B43_LED_RADIO_ALL;
- break;
- case 1:
- behaviour = B43_LED_RADIO_B;
- if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
- behaviour = B43_LED_ASSOC;
- break;
- case 2:
- behaviour = B43_LED_RADIO_A;
- break;
- case 3:
- behaviour = B43_LED_OFF;
- break;
- default:
- B43_WARN_ON(1);
- return;
- }
- } else {
- behaviour = sprom[i] & B43_LED_BEHAVIOUR;
- activelow = !!(sprom[i] & B43_LED_ACTIVELOW);
- }
- b43_map_led(dev, i, behaviour, activelow);
- }
-}
-
-void b43_leds_exit(struct b43_wldev *dev)
-{
- b43_unregister_led(&dev->led_tx);
- b43_unregister_led(&dev->led_rx);
- b43_unregister_led(&dev->led_assoc);
- b43_unregister_led(&dev->led_radio);
-}
projects / openwrt.git / blobdiff