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path: root/drivers/net/wireless/b43legacy/leds.c
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Diffstat (limited to 'drivers/net/wireless/b43legacy/leds.c')
-rw-r--r--drivers/net/wireless/b43legacy/leds.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43legacy/leds.c b/drivers/net/wireless/b43legacy/leds.c
new file mode 100644
index 000000000000..a584ea810502
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/leds.c
@@ -0,0 +1,298 @@
+/*
+
+ Broadcom B43legacy wireless driver
+
+ Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
+ Stefano Brivio <st3@riseup.net>
+ Michael Buesch <mb@bu3sch.de>
+ Danny van Dyk <kugelfang@gentoo.org>
+ Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
+
+ 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);
+}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 08:30:23 +0300