diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/net/wireless/b43/leds.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/net/wireless/b43/leds.c')
-rw-r--r-- | kernel/drivers/net/wireless/b43/leds.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/kernel/drivers/net/wireless/b43/leds.c b/kernel/drivers/net/wireless/b43/leds.c new file mode 100644 index 000000000..d79ab2a22 --- /dev/null +++ b/kernel/drivers/net/wireless/b43/leds.c @@ -0,0 +1,359 @@ +/* + + 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 <m@bues.ch> + 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" +#include "rfkill.h" + + +static void b43_led_turn_on(struct b43_wldev *dev, u8 led_index, + bool activelow) +{ + u16 ctl; + + 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); +} + +static void b43_led_turn_off(struct b43_wldev *dev, u8 led_index, + bool activelow) +{ + u16 ctl; + + 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); +} + +static void b43_led_update(struct b43_wldev *dev, + struct b43_led *led) +{ + bool radio_enabled; + bool turn_on; + + if (!led->wl) + return; + + radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable); + + /* The led->state read is racy, but we don't care. In case we raced + * with the brightness_set handler, we will be called again soon + * to fixup our state. */ + if (radio_enabled) + turn_on = atomic_read(&led->state) != LED_OFF; + else + turn_on = false; + if (turn_on == led->hw_state) + return; + led->hw_state = turn_on; + + if (turn_on) + b43_led_turn_on(dev, led->index, led->activelow); + else + b43_led_turn_off(dev, led->index, led->activelow); +} + +static void b43_leds_work(struct work_struct *work) +{ + struct b43_leds *leds = container_of(work, struct b43_leds, work); + struct b43_wl *wl = container_of(leds, struct b43_wl, leds); + struct b43_wldev *dev; + + mutex_lock(&wl->mutex); + dev = wl->current_dev; + if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED)) + goto out_unlock; + + b43_led_update(dev, &wl->leds.led_tx); + b43_led_update(dev, &wl->leds.led_rx); + b43_led_update(dev, &wl->leds.led_radio); + b43_led_update(dev, &wl->leds.led_assoc); + +out_unlock: + mutex_unlock(&wl->mutex); +} + +/* 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_wl *wl = led->wl; + + if (likely(!wl->leds.stop)) { + atomic_set(&led->state, brightness); + ieee80211_queue_work(wl->hw, &wl->leds.work); + } +} + +static int b43_register_led(struct b43_wldev *dev, struct b43_led *led, + const char *name, const char *default_trigger, + u8 led_index, bool activelow) +{ + int err; + + if (led->wl) + return -EEXIST; + if (!default_trigger) + return -EINVAL; + led->wl = dev->wl; + led->index = led_index; + led->activelow = activelow; + strncpy(led->name, name, sizeof(led->name)); + atomic_set(&led->state, 0); + + 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->wl = NULL; + return err; + } + + return 0; +} + +static void b43_unregister_led(struct b43_led *led) +{ + if (!led->wl) + return; + led_classdev_unregister(&led->led_dev); + led->wl = 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: + case B43_LED_OFF: + case B43_LED_ON: + 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->wl->leds.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->wl->leds.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->wl->leds.led_radio, name, + ieee80211_get_radio_led_name(hw), + 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->wl->leds.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; + } +} + +static void b43_led_get_sprominfo(struct b43_wldev *dev, + unsigned int led_index, + enum b43_led_behaviour *behaviour, + bool *activelow) +{ + u8 sprom[4]; + + sprom[0] = dev->dev->bus_sprom->gpio0; + sprom[1] = dev->dev->bus_sprom->gpio1; + sprom[2] = dev->dev->bus_sprom->gpio2; + sprom[3] = dev->dev->bus_sprom->gpio3; + + if (sprom[led_index] == 0xFF) { + /* There is no LED information in the SPROM + * for this LED. Hardcode it here. */ + *activelow = false; + switch (led_index) { + case 0: + *behaviour = B43_LED_ACTIVITY; + *activelow = true; + if (dev->dev->board_vendor == PCI_VENDOR_ID_COMPAQ) + *behaviour = B43_LED_RADIO_ALL; + break; + case 1: + *behaviour = B43_LED_RADIO_B; + if (dev->dev->board_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: + *behaviour = B43_LED_OFF; + B43_WARN_ON(1); + return; + } + } else { + *behaviour = sprom[led_index] & B43_LED_BEHAVIOUR; + *activelow = !!(sprom[led_index] & B43_LED_ACTIVELOW); + } +} + +void b43_leds_init(struct b43_wldev *dev) +{ + struct b43_led *led; + unsigned int i; + enum b43_led_behaviour behaviour; + bool activelow; + + /* Sync the RF-kill LED state (if we have one) with radio and switch states. */ + led = &dev->wl->leds.led_radio; + if (led->wl) { + if (dev->phy.radio_on && b43_is_hw_radio_enabled(dev)) { + b43_led_turn_on(dev, led->index, led->activelow); + led->hw_state = true; + atomic_set(&led->state, 1); + } else { + b43_led_turn_off(dev, led->index, led->activelow); + led->hw_state = false; + atomic_set(&led->state, 0); + } + } + + /* Initialize TX/RX/ASSOC leds */ + led = &dev->wl->leds.led_tx; + if (led->wl) { + b43_led_turn_off(dev, led->index, led->activelow); + led->hw_state = false; + atomic_set(&led->state, 0); + } + led = &dev->wl->leds.led_rx; + if (led->wl) { + b43_led_turn_off(dev, led->index, led->activelow); + led->hw_state = false; + atomic_set(&led->state, 0); + } + led = &dev->wl->leds.led_assoc; + if (led->wl) { + b43_led_turn_off(dev, led->index, led->activelow); + led->hw_state = false; + atomic_set(&led->state, 0); + } + + /* Initialize other LED states. */ + for (i = 0; i < B43_MAX_NR_LEDS; i++) { + b43_led_get_sprominfo(dev, i, &behaviour, &activelow); + switch (behaviour) { + case B43_LED_OFF: + b43_led_turn_off(dev, i, activelow); + break; + case B43_LED_ON: + b43_led_turn_on(dev, i, activelow); + break; + default: + /* Leave others as-is. */ + break; + } + } + + dev->wl->leds.stop = 0; +} + +void b43_leds_exit(struct b43_wldev *dev) +{ + struct b43_leds *leds = &dev->wl->leds; + + b43_led_turn_off(dev, leds->led_tx.index, leds->led_tx.activelow); + b43_led_turn_off(dev, leds->led_rx.index, leds->led_rx.activelow); + b43_led_turn_off(dev, leds->led_assoc.index, leds->led_assoc.activelow); + b43_led_turn_off(dev, leds->led_radio.index, leds->led_radio.activelow); +} + +void b43_leds_stop(struct b43_wldev *dev) +{ + struct b43_leds *leds = &dev->wl->leds; + + leds->stop = 1; + cancel_work_sync(&leds->work); +} + +void b43_leds_register(struct b43_wldev *dev) +{ + unsigned int i; + enum b43_led_behaviour behaviour; + bool activelow; + + INIT_WORK(&dev->wl->leds.work, b43_leds_work); + + /* Register the LEDs to the LED subsystem. */ + for (i = 0; i < B43_MAX_NR_LEDS; i++) { + b43_led_get_sprominfo(dev, i, &behaviour, &activelow); + b43_map_led(dev, i, behaviour, activelow); + } +} + +void b43_leds_unregister(struct b43_wl *wl) +{ + struct b43_leds *leds = &wl->leds; + + b43_unregister_led(&leds->led_tx); + b43_unregister_led(&leds->led_rx); + b43_unregister_led(&leds->led_assoc); + b43_unregister_led(&leds->led_radio); +} |