From 900cb9fb858b29ba749ff243755ccb5f073f2b54 Mon Sep 17 00:00:00 2001 From: nbd Date: Sat, 13 Oct 2007 22:41:37 +0000 Subject: add b43 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9293 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/b43/src/leds.c | 234 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 234 insertions(+) create mode 100644 package/b43/src/leds.c (limited to 'package/b43/src/leds.c') diff --git a/package/b43/src/leds.c b/package/b43/src/leds.c new file mode 100644 index 000000000..3099e6203 --- /dev/null +++ b/package/b43/src/leds.c @@ -0,0 +1,234 @@ +/* + + Broadcom B43 wireless driver + LED control + + Copyright (c) 2005 Martin Langer , + Copyright (c) 2005 Stefano Brivio + Copyright (c) 2005-2007 Michael Buesch + Copyright (c) 2005 Danny van Dyk + Copyright (c) 2005 Andreas Jaggi + + 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); + 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.r1.gpio0; + sprom[1] = bus->sprom.r1.gpio1; + sprom[2] = bus->sprom.r1.gpio2; + sprom[3] = bus->sprom.r1.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); +} -- cgit v1.2.3