/* Broadcom B43legacy wireless driver Copyright (c) 2005 Martin Langer , Stefano Brivio Michael Buesch Danny van Dyk Andreas Jaggi Copyright (c) 2007 Larry Finger 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 "leds.h" #include "b43legacy.h" #include "main.h" static void b43legacy_led_changestate(struct b43legacy_led *led) { struct b43legacy_wldev *dev = led->dev; const int index = led->index; u16 ledctl; B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS)); B43legacy_WARN_ON(!led->blink_interval); ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL); ledctl ^= (1 << index); b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl); } static void b43legacy_led_blink(unsigned long d) { struct b43legacy_led *led = (struct b43legacy_led *)d; struct b43legacy_wldev *dev = led->dev; unsigned long flags; spin_lock_irqsave(&dev->wl->leds_lock, flags); if (led->blink_interval) { b43legacy_led_changestate(led); mod_timer(&led->blink_timer, jiffies + led->blink_interval); } spin_unlock_irqrestore(&dev->wl->leds_lock, flags); } static void b43legacy_led_blink_start(struct b43legacy_led *led, unsigned long interval) { if (led->blink_interval) return; led->blink_interval = interval; b43legacy_led_changestate(led); led->blink_timer.expires = jiffies + interval; add_timer(&led->blink_timer); } static void b43legacy_led_blink_stop(struct b43legacy_led *led, int sync) { struct b43legacy_wldev *dev = led->dev; const int index = led->index; u16 ledctl; if (!led->blink_interval) return; if (unlikely(sync)) del_timer_sync(&led->blink_timer); else del_timer(&led->blink_timer); led->blink_interval = 0; /* Make sure the LED is turned off. */ B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS)); ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL); if (led->activelow) ledctl |= (1 << index); else ledctl &= ~(1 << index); b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl); } static void b43legacy_led_init_hardcoded(struct b43legacy_wldev *dev, struct b43legacy_led *led, int led_index) { struct ssb_bus *bus = dev->dev->bus; /* This function is called, if the behaviour (and activelow) * information for a LED is missing in the SPROM. * We hardcode the behaviour values for various devices here. * Note that the B43legacy_LED_TEST_XXX behaviour values can * be used to figure out which led is mapped to which index. */ switch (led_index) { case 0: led->behaviour = B43legacy_LED_ACTIVITY; led->activelow = 1; if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ) led->behaviour = B43legacy_LED_RADIO_ALL; break; case 1: led->behaviour = B43legacy_LED_RADIO_B; if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK) led->behaviour = B43legacy_LED_ASSOC; break; case 2: led->behaviour = B43legacy_LED_RADIO_A; break; case 3: led->behaviour = B43legacy_LED_OFF; break; default: B43legacy_BUG_ON(1); } } int b43legacy_leds_init(struct b43legacy_wldev *dev) { struct b43legacy_led *led; u8 sprom[4]; int i; sprom[0] = dev->dev->bus->sprom.r1.gpio0; sprom[1] = dev->dev->bus->sprom.r1.gpio1; sprom[2] = dev->dev->bus->sprom.r1.gpio2; sprom[3] = dev->dev->bus->sprom.r1.gpio3; for (i = 0; i < B43legacy_NR_LEDS; i++) { led = &(dev->leds[i]); led->index = i; led->dev = dev; setup_timer(&led->blink_timer, b43legacy_led_blink, (unsigned long)led); if (sprom[i] == 0xFF) b43legacy_led_init_hardcoded(dev, led, i); else { led->behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR; led->activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW); } } return 0; } void b43legacy_leds_exit(struct b43legacy_wldev *dev) { struct b43legacy_led *led; int i; for (i = 0; i < B43legacy_NR_LEDS; i++) { led = &(dev->leds[i]); b43legacy_led_blink_stop(led, 1); } b43legacy_leds_switch_all(dev, 0); } void b43legacy_leds_update(struct b43legacy_wldev *dev, int activity) { struct b43legacy_led *led; struct b43legacy_phy *phy = &dev->phy; const int transferring = (jiffies - dev->stats.last_tx) < B43legacy_LED_XFER_THRES; int i; int turn_on; unsigned long interval = 0; u16 ledctl; unsigned long flags; bool radio_enabled = (phy->radio_on && dev->radio_hw_enable); spin_lock_irqsave(&dev->wl->leds_lock, flags); ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL); for (i = 0; i < B43legacy_NR_LEDS; i++) { led = &(dev->leds[i]); turn_on = 0; switch (led->behaviour) { case B43legacy_LED_INACTIVE: continue; case B43legacy_LED_OFF: break; case B43legacy_LED_ON: turn_on = 1; break; case B43legacy_LED_ACTIVITY: turn_on = activity; break; case B43legacy_LED_RADIO_ALL: turn_on = radio_enabled; break; case B43legacy_LED_RADIO_A: break; case B43legacy_LED_RADIO_B: turn_on = radio_enabled; break; case B43legacy_LED_MODE_BG: if (phy->type == B43legacy_PHYTYPE_G && radio_enabled) turn_on = 1; break; case B43legacy_LED_TRANSFER: if (transferring) b43legacy_led_blink_start(led, B43legacy_LEDBLINK_MEDIUM); else b43legacy_led_blink_stop(led, 0); continue; case B43legacy_LED_APTRANSFER: if (b43legacy_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) { if (transferring) { interval = B43legacy_LEDBLINK_FAST; turn_on = 1; } } else { turn_on = 1; if (transferring) interval = B43legacy_LEDBLINK_FAST; else turn_on = 0; } if (turn_on) b43legacy_led_blink_start(led, interval); else b43legacy_led_blink_stop(led, 0); continue; case B43legacy_LED_WEIRD: break; case B43legacy_LED_ASSOC: turn_on = 1; #ifdef CONFIG_B43LEGACY_DEBUG case B43legacy_LED_TEST_BLINKSLOW: b43legacy_led_blink_start(led, B43legacy_LEDBLINK_SLOW); continue; case B43legacy_LED_TEST_BLINKMEDIUM: b43legacy_led_blink_start(led, B43legacy_LEDBLINK_MEDIUM); continue; case B43legacy_LED_TEST_BLINKFAST: b43legacy_led_blink_start(led, B43legacy_LEDBLINK_FAST); continue; #endif /* CONFIG_B43LEGACY_DEBUG */ default: B43legacy_BUG_ON(1); }; if (led->activelow) turn_on = !turn_on; if (turn_on) ledctl |= (1 << i); else ledctl &= ~(1 << i); } b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl); spin_unlock_irqrestore(&dev->wl->leds_lock, flags); } void b43legacy_leds_switch_all(struct b43legacy_wldev *dev, int on) { struct b43legacy_led *led; u16 ledctl; int i; int bit_on; unsigned long flags; spin_lock_irqsave(&dev->wl->leds_lock, flags); ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL); for (i = 0; i < B43legacy_NR_LEDS; i++) { led = &(dev->leds[i]); if (led->behaviour == B43legacy_LED_INACTIVE) continue; if (on) bit_on = led->activelow ? 0 : 1; else bit_on = led->activelow ? 1 : 0; if (bit_on) ledctl |= (1 << i); else ledctl &= ~(1 << i); } b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl); spin_unlock_irqrestore(&dev->wl->leds_lock, flags); }