[B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 302 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43legacy/leds.c b/drivers/net/wireless/b43legacy/leds.c
new file mode 100644
index 00000000000..498912ddedd
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/leds.c
@@ -0,0 +1,302 @@
+/*
+
+  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;
+
+	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 = phy->radio_on &&
+				  b43legacy_is_hw_radio_enabled(dev);
+			break;
+		case B43legacy_LED_RADIO_A:
+			break;
+		case B43legacy_LED_RADIO_B:
+			turn_on = (phy->radio_on &&
+				   b43legacy_is_hw_radio_enabled(dev) &&
+				   (phy->type == B43legacy_PHYTYPE_B ||
+				    phy->type == B43legacy_PHYTYPE_G));
+			break;
+		case B43legacy_LED_MODE_BG:
+			if (phy->type == B43legacy_PHYTYPE_G &&
+			    b43legacy_is_hw_radio_enabled(dev))
+				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);
+}