[B43]: LED triggers support
Drive the LEDs through the generic LED triggers.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Larry Finger <larry.finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/b43/leds.c b/drivers/net/wireless/b43/leds.c
index 0f155b4..ddab856 100644
--- a/drivers/net/wireless/b43/leds.c
+++ b/drivers/net/wireless/b43/leds.c
@@ -1,12 +1,13 @@
/*
Broadcom B43 wireless driver
+ LED control
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) 2005 Stefano Brivio <st3@riseup.net>
+ 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
@@ -27,272 +28,204 @@
#include "b43.h"
#include "leds.h"
-#include "main.h"
-static void b43_led_changestate(struct b43_led *led)
+
+static void b43_led_turn_on(struct b43_wldev *dev, u8 led_index,
+ bool activelow)
{
- struct b43_wldev *dev = led->dev;
- const int index = led->index;
- u16 ledctl;
-
- B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
- B43_WARN_ON(!led->blink_interval);
- ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
- ledctl ^= (1 << index);
- b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
-}
-
-static void b43_led_blink(unsigned long d)
-{
- struct b43_led *led = (struct b43_led *)d;
- struct b43_wldev *dev = led->dev;
+ struct b43_wl *wl = dev->wl;
unsigned long flags;
+ u16 ctl;
- spin_lock_irqsave(&dev->wl->leds_lock, flags);
- if (led->blink_interval) {
- b43_led_changestate(led);
- mod_timer(&led->blink_timer, jiffies + led->blink_interval);
- }
- spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
+ 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_blink_start(struct b43_led *led, unsigned long interval)
+static void b43_led_turn_off(struct b43_wldev *dev, u8 led_index,
+ bool activelow)
{
- if (led->blink_interval)
- return;
- led->blink_interval = interval;
- b43_led_changestate(led);
- led->blink_timer.expires = jiffies + interval;
- add_timer(&led->blink_timer);
+ 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_blink_stop(struct b43_led *led, int sync)
+/* 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;
- const int index = led->index;
- u16 ledctl;
+ bool radio_enabled;
- if (!led->blink_interval)
- return;
- if (unlikely(sync))
- del_timer_sync(&led->blink_timer);
- else
- del_timer(&led->blink_timer);
- led->blink_interval = 0;
+ /* 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);
- /* Make sure the LED is turned off. */
- B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
- ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
- if (led->activelow)
- ledctl |= (1 << index);
+ if (brightness == LED_OFF || !radio_enabled)
+ b43_led_turn_off(dev, led->index, led->activelow);
else
- ledctl &= ~(1 << index);
- b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
+ b43_led_turn_on(dev, led->index, led->activelow);
}
-static void b43_led_init_hardcoded(struct b43_wldev *dev,
- struct b43_led *led, int led_index)
+static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
+ const char *name, char *default_trigger,
+ u8 led_index, bool activelow)
{
- struct ssb_bus *bus = dev->dev->bus;
+ int err;
- /* 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 B43_LED_TEST_XXX behaviour values can
- * be used to figure out which led is mapped to which index.
- */
+ 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));
- switch (led_index) {
- case 0:
- led->behaviour = B43_LED_ACTIVITY;
- led->activelow = 1;
- if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
- led->behaviour = B43_LED_RADIO_ALL;
+ 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 1:
- led->behaviour = B43_LED_RADIO_B;
- if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
- led->behaviour = B43_LED_ASSOC;
+ case B43_LED_OFF:
+ b43_led_turn_off(dev, led_index, activelow);
break;
- case 2:
- led->behaviour = B43_LED_RADIO_A;
+ case B43_LED_ON:
+ b43_led_turn_on(dev, led_index, activelow);
break;
- case 3:
- led->behaviour = B43_LED_OFF;
+ 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;
+ /*FIXME: We need another trigger for the "radio-on" LEDs below.
+ * Wiggle that somehow into the rfkill subsystem. */
+ case B43_LED_RADIO_ALL:
+ case B43_LED_RADIO_A:
+ case B43_LED_RADIO_B:
+ case B43_LED_MODE_BG:
+ 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:
- B43_WARN_ON(1);
+ b43warn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
+ behaviour);
+ break;
}
}
-int b43_leds_init(struct b43_wldev *dev)
+void b43_leds_init(struct b43_wldev *dev)
{
- struct b43_led *led;
+ struct ssb_bus *bus = dev->dev->bus;
u8 sprom[4];
int i;
+ enum b43_led_behaviour behaviour;
+ bool activelow;
- 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;
+ 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 < B43_NR_LEDS; i++) {
- led = &(dev->leds[i]);
- led->index = i;
- led->dev = dev;
- setup_timer(&led->blink_timer,
- b43_led_blink, (unsigned long)led);
-
+ for (i = 0; i < 4; i++) {
if (sprom[i] == 0xFF) {
- b43_led_init_hardcoded(dev, led, i);
+ /* 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 {
- led->behaviour = sprom[i] & B43_LED_BEHAVIOUR;
- led->activelow = !!(sprom[i] & B43_LED_ACTIVELOW);
+ behaviour = sprom[i] & B43_LED_BEHAVIOUR;
+ activelow = !!(sprom[i] & B43_LED_ACTIVELOW);
}
+ b43_map_led(dev, i, behaviour, activelow);
}
-
- return 0;
}
void b43_leds_exit(struct b43_wldev *dev)
{
- struct b43_led *led;
- int i;
-
- for (i = 0; i < B43_NR_LEDS; i++) {
- led = &(dev->leds[i]);
- b43_led_blink_stop(led, 1);
- }
- b43_leds_switch_all(dev, 0);
-}
-
-void b43_leds_update(struct b43_wldev *dev, int activity)
-{
- struct b43_led *led;
- struct b43_phy *phy = &dev->phy;
- const int transferring =
- (jiffies - dev->stats.last_tx) < B43_LED_XFER_THRES;
- int i, 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 = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
- for (i = 0; i < B43_NR_LEDS; i++) {
- led = &(dev->leds[i]);
-
- turn_on = 0;
- switch (led->behaviour) {
- case B43_LED_INACTIVE:
- continue;
- case B43_LED_OFF:
- break;
- case B43_LED_ON:
- turn_on = 1;
- break;
- case B43_LED_ACTIVITY:
- turn_on = activity;
- break;
- case B43_LED_RADIO_ALL:
- turn_on = radio_enabled;
- break;
- case B43_LED_RADIO_A:
- turn_on = (radio_enabled && phy->type == B43_PHYTYPE_A);
- break;
- case B43_LED_RADIO_B:
- turn_on = (radio_enabled &&
- (phy->type == B43_PHYTYPE_B
- || phy->type == B43_PHYTYPE_G));
- break;
- case B43_LED_MODE_BG:
- if (phy->type == B43_PHYTYPE_G
- && radio_enabled)
- turn_on = 1;
- break;
- case B43_LED_TRANSFER:
- if (transferring)
- b43_led_blink_start(led, B43_LEDBLINK_MEDIUM);
- else
- b43_led_blink_stop(led, 0);
- continue;
- case B43_LED_APTRANSFER:
- if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
- if (transferring) {
- interval = B43_LEDBLINK_FAST;
- turn_on = 1;
- }
- } else {
- turn_on = 1;
- if (0 /*TODO: not assoc */ )
- interval = B43_LEDBLINK_SLOW;
- else if (transferring)
- interval = B43_LEDBLINK_FAST;
- else
- turn_on = 0;
- }
- if (turn_on)
- b43_led_blink_start(led, interval);
- else
- b43_led_blink_stop(led, 0);
- continue;
- case B43_LED_WEIRD:
- //TODO
- break;
- case B43_LED_ASSOC:
- if (1 /*dev->softmac->associated */ )
- turn_on = 1;
- break;
-#ifdef CONFIG_B43_DEBUG
- case B43_LED_TEST_BLINKSLOW:
- b43_led_blink_start(led, B43_LEDBLINK_SLOW);
- continue;
- case B43_LED_TEST_BLINKMEDIUM:
- b43_led_blink_start(led, B43_LEDBLINK_MEDIUM);
- continue;
- case B43_LED_TEST_BLINKFAST:
- b43_led_blink_start(led, B43_LEDBLINK_FAST);
- continue;
-#endif /* CONFIG_B43_DEBUG */
- default:
- B43_WARN_ON(1);
- };
-
- if (led->activelow)
- turn_on = !turn_on;
- if (turn_on)
- ledctl |= (1 << i);
- else
- ledctl &= ~(1 << i);
- }
- b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
- spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
-}
-
-void b43_leds_switch_all(struct b43_wldev *dev, int on)
-{
- struct b43_led *led;
- u16 ledctl;
- int i;
- int bit_on;
- unsigned long flags;
-
- spin_lock_irqsave(&dev->wl->leds_lock, flags);
- ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
- for (i = 0; i < B43_NR_LEDS; i++) {
- led = &(dev->leds[i]);
- if (led->behaviour == B43_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);
- }
- b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
- spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
+ b43_unregister_led(&dev->led_tx);
+ b43_unregister_led(&dev->led_rx);
+ b43_unregister_led(&dev->led_assoc);
}