Initial import

1 files changed, 243 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43legacy/leds.c b/drivers/net/wireless/b43legacy/leds.c
new file mode 100644
index 000000000..fd4565389
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/leds.c
@@ -0,0 +1,243 @@
+/*
+
+  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 "b43legacy.h"
+#include "leds.h"
+#include "rfkill.h"
+
+
+static void b43legacy_led_turn_on(struct b43legacy_wldev *dev, u8 led_index,
+			    bool activelow)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	unsigned long flags;
+	u16 ctl;
+
+	spin_lock_irqsave(&wl->leds_lock, flags);
+	ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
+	if (activelow)
+		ctl &= ~(1 << led_index);
+	else
+		ctl |= (1 << led_index);
+	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
+	spin_unlock_irqrestore(&wl->leds_lock, flags);
+}
+
+static void b43legacy_led_turn_off(struct b43legacy_wldev *dev, u8 led_index,
+			     bool activelow)
+{
+	struct b43legacy_wl *wl = dev->wl;
+	unsigned long flags;
+	u16 ctl;
+
+	spin_lock_irqsave(&wl->leds_lock, flags);
+	ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
+	if (activelow)
+		ctl |= (1 << led_index);
+	else
+		ctl &= ~(1 << led_index);
+	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl);
+	spin_unlock_irqrestore(&wl->leds_lock, flags);
+}
+
+/* Callback from the LED subsystem. */
+static void b43legacy_led_brightness_set(struct led_classdev *led_dev,
+				   enum led_brightness brightness)
+{
+	struct b43legacy_led *led = container_of(led_dev, struct b43legacy_led,
+				    led_dev);
+	struct b43legacy_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)
+		b43legacy_led_turn_off(dev, led->index, led->activelow);
+	else
+		b43legacy_led_turn_on(dev, led->index, led->activelow);
+}
+
+static int b43legacy_register_led(struct b43legacy_wldev *dev,
+				  struct b43legacy_led *led,
+				  const char *name,
+				  const char *default_trigger,
+				  u8 led_index, bool activelow)
+{
+	int err;
+
+	b43legacy_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 = b43legacy_led_brightness_set;
+
+	err = led_classdev_register(dev->dev->dev, &led->led_dev);
+	if (err) {
+		b43legacywarn(dev->wl, "LEDs: Failed to register %s\n", name);
+		led->dev = NULL;
+		return err;
+	}
+	return 0;
+}
+
+static void b43legacy_unregister_led(struct b43legacy_led *led)
+{
+	if (!led->dev)
+		return;
+	led_classdev_unregister(&led->led_dev);
+	b43legacy_led_turn_off(led->dev, led->index, led->activelow);
+	led->dev = NULL;
+}
+
+static void b43legacy_map_led(struct b43legacy_wldev *dev,
+			u8 led_index,
+			enum b43legacy_led_behaviour behaviour,
+			bool activelow)
+{
+	struct ieee80211_hw *hw = dev->wl->hw;
+	char name[B43legacy_LED_MAX_NAME_LEN + 1];
+
+	/* Map the b43 specific LED behaviour value to the
+	 * generic LED triggers. */
+	switch (behaviour) {
+	case B43legacy_LED_INACTIVE:
+		break;
+	case B43legacy_LED_OFF:
+		b43legacy_led_turn_off(dev, led_index, activelow);
+		break;
+	case B43legacy_LED_ON:
+		b43legacy_led_turn_on(dev, led_index, activelow);
+		break;
+	case B43legacy_LED_ACTIVITY:
+	case B43legacy_LED_TRANSFER:
+	case B43legacy_LED_APTRANSFER:
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::tx", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_tx, name,
+				 ieee80211_get_tx_led_name(hw),
+				 led_index, activelow);
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::rx", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_rx, name,
+				 ieee80211_get_rx_led_name(hw),
+				 led_index, activelow);
+		break;
+	case B43legacy_LED_RADIO_ALL:
+	case B43legacy_LED_RADIO_A:
+	case B43legacy_LED_RADIO_B:
+	case B43legacy_LED_MODE_BG:
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::radio", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_radio, name,
+				 ieee80211_get_radio_led_name(hw),
+				 led_index, activelow);
+		/* Sync the RF-kill LED state with radio and switch states. */
+		if (dev->phy.radio_on && b43legacy_is_hw_radio_enabled(dev))
+			b43legacy_led_turn_on(dev, led_index, activelow);
+		break;
+	case B43legacy_LED_WEIRD:
+	case B43legacy_LED_ASSOC:
+		snprintf(name, sizeof(name),
+			 "b43legacy-%s::assoc", wiphy_name(hw->wiphy));
+		b43legacy_register_led(dev, &dev->led_assoc, name,
+				 ieee80211_get_assoc_led_name(hw),
+				 led_index, activelow);
+		break;
+	default:
+		b43legacywarn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
+			behaviour);
+		break;
+	}
+}
+
+void b43legacy_leds_init(struct b43legacy_wldev *dev)
+{
+	struct ssb_bus *bus = dev->dev->bus;
+	u8 sprom[4];
+	int i;
+	enum b43legacy_led_behaviour behaviour;
+	bool activelow;
+
+	sprom[0] = bus->sprom.gpio0;
+	sprom[1] = bus->sprom.gpio1;
+	sprom[2] = bus->sprom.gpio2;
+	sprom[3] = bus->sprom.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 = false;
+			switch (i) {
+			case 0:
+				behaviour = B43legacy_LED_ACTIVITY;
+				activelow = true;
+				if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
+					behaviour = B43legacy_LED_RADIO_ALL;
+				break;
+			case 1:
+				behaviour = B43legacy_LED_RADIO_B;
+				if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
+					behaviour = B43legacy_LED_ASSOC;
+				break;
+			case 2:
+				behaviour = B43legacy_LED_RADIO_A;
+				break;
+			case 3:
+				behaviour = B43legacy_LED_OFF;
+				break;
+			default:
+				B43legacy_WARN_ON(1);
+				return;
+			}
+		} else {
+			behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
+			activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW);
+		}
+		b43legacy_map_led(dev, i, behaviour, activelow);
+	}
+}
+
+void b43legacy_leds_exit(struct b43legacy_wldev *dev)
+{
+	b43legacy_unregister_led(&dev->led_tx);
+	b43legacy_unregister_led(&dev->led_rx);
+	b43legacy_unregister_led(&dev->led_assoc);
+	b43legacy_unregister_led(&dev->led_radio);
+}