[deliverable/linux.git] / drivers / net / wireless / b43 / leds.c

/*

  Broadcom B43 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>

  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 "main.h"

static void b43_led_changestate(struct b43_led *led)
{
	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;
	unsigned long flags;

	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);
}

static void b43_led_blink_start(struct b43_led *led, unsigned long interval)
{
	if (led->blink_interval)
		return;
	led->blink_interval = interval;
	b43_led_changestate(led);
	led->blink_timer.expires = jiffies + interval;
	add_timer(&led->blink_timer);
}

static void b43_led_blink_stop(struct b43_led *led, int sync)
{
	struct b43_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. */
	B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
	if (led->activelow)
		ledctl |= (1 << index);
	else
		ledctl &= ~(1 << index);
	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
}

static void b43_led_init_hardcoded(struct b43_wldev *dev,
				   struct b43_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 B43_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 = B43_LED_ACTIVITY;
		led->activelow = 1;
		if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
			led->behaviour = B43_LED_RADIO_ALL;
		break;
	case 1:
		led->behaviour = B43_LED_RADIO_B;
		if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
			led->behaviour = B43_LED_ASSOC;
		break;
	case 2:
		led->behaviour = B43_LED_RADIO_A;
		break;
	case 3:
		led->behaviour = B43_LED_OFF;
		break;
	default:
		B43_WARN_ON(1);
	}
}

int b43_leds_init(struct b43_wldev *dev)
{
	struct b43_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 < 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);

		if (sprom[i] == 0xFF) {
			b43_led_init_hardcoded(dev, led, i);
		} else {
			led->behaviour = sprom[i] & B43_LED_BEHAVIOUR;
			led->activelow = !!(sprom[i] & B43_LED_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);
}
Commit	Line	Data
e4d6b795 MB	1	/*
	2
	3	Broadcom B43 wireless driver
	4
	5	Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
	6	Stefano Brivio <st3@riseup.net>
	7	Michael Buesch <mb@bu3sch.de>
	8	Danny van Dyk <kugelfang@gentoo.org>
	9	Andreas Jaggi <andreas.jaggi@waterwave.ch>
	10
	11	This program is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 2 of the License, or
	14	(at your option) any later version.
	15
	16	This program is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
	20
	21	You should have received a copy of the GNU General Public License
	22	along with this program; see the file COPYING. If not, write to
	23	the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
	24	Boston, MA 02110-1301, USA.
	25
	26	*/
	27
	28	#include "b43.h"
	29	#include "leds.h"
	30	#include "main.h"
	31
	32	static void b43_led_changestate(struct b43_led *led)
	33	{
	34	struct b43_wldev *dev = led->dev;
1a09404a	35	const int index = led->index;
e4d6b795 MB	36	u16 ledctl;
	37
	38	B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
	39	B43_WARN_ON(!led->blink_interval);
	40	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
1a09404a	41	ledctl ^= (1 << index);
e4d6b795 MB	42	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
	43	}
	44
	45	static void b43_led_blink(unsigned long d)
	46	{
	47	struct b43_led led = (struct b43_led )d;
	48	struct b43_wldev *dev = led->dev;
	49	unsigned long flags;
	50
	51	spin_lock_irqsave(&dev->wl->leds_lock, flags);
	52	if (led->blink_interval) {
	53	b43_led_changestate(led);
	54	mod_timer(&led->blink_timer, jiffies + led->blink_interval);
	55	}
	56	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
	57	}
	58
	59	static void b43_led_blink_start(struct b43_led *led, unsigned long interval)
	60	{
	61	if (led->blink_interval)
	62	return;
	63	led->blink_interval = interval;
	64	b43_led_changestate(led);
	65	led->blink_timer.expires = jiffies + interval;
	66	add_timer(&led->blink_timer);
	67	}
	68
	69	static void b43_led_blink_stop(struct b43_led *led, int sync)
	70	{
	71	struct b43_wldev *dev = led->dev;
1a09404a	72	const int index = led->index;
e4d6b795 MB	73	u16 ledctl;
	74
	75	if (!led->blink_interval)
	76	return;
	77	if (unlikely(sync))
	78	del_timer_sync(&led->blink_timer);
	79	else
	80	del_timer(&led->blink_timer);
	81	led->blink_interval = 0;
	82
	83	/* Make sure the LED is turned off. */
	84	B43_WARN_ON(!(index >= 0 && index < B43_NR_LEDS));
	85	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
	86	if (led->activelow)
	87	ledctl \|= (1 << index);
	88	else
	89	ledctl &= ~(1 << index);
	90	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
	91	}
	92
	93	static void b43_led_init_hardcoded(struct b43_wldev *dev,
	94	struct b43_led *led, int led_index)
	95	{
	96	struct ssb_bus *bus = dev->dev->bus;
	97
	98	/* This function is called, if the behaviour (and activelow)
	99	* information for a LED is missing in the SPROM.
	100	* We hardcode the behaviour values for various devices here.
	101	* Note that the B43_LED_TEST_XXX behaviour values can
	102	* be used to figure out which led is mapped to which index.
	103	*/
	104
	105	switch (led_index) {
	106	case 0:
	107	led->behaviour = B43_LED_ACTIVITY;
	108	led->activelow = 1;
	109	if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
	110	led->behaviour = B43_LED_RADIO_ALL;
	111	break;
	112	case 1:
	113	led->behaviour = B43_LED_RADIO_B;
	114	if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
	115	led->behaviour = B43_LED_ASSOC;
	116	break;
	117	case 2:
	118	led->behaviour = B43_LED_RADIO_A;
	119	break;
	120	case 3:
	121	led->behaviour = B43_LED_OFF;
	122	break;
	123	default:
	124	B43_WARN_ON(1);
	125	}
	126	}
	127
	128	int b43_leds_init(struct b43_wldev *dev)
	129	{
	130	struct b43_led *led;
	131	u8 sprom[4];
	132	int i;
	133
	134	sprom[0] = dev->dev->bus->sprom.r1.gpio0;
	135	sprom[1] = dev->dev->bus->sprom.r1.gpio1;
	136	sprom[2] = dev->dev->bus->sprom.r1.gpio2;
137	sprom[3] = dev->dev->bus->sprom.r1.gpio3;
138
139	for (i = 0; i < B43_NR_LEDS; i++) {
140	led = &(dev->leds[i]);
1a09404a	141	led->index = i;
e4d6b795 MB	142	led->dev = dev;
	143	setup_timer(&led->blink_timer,
	144	b43_led_blink, (unsigned long)led);
	145
	146	if (sprom[i] == 0xFF) {
	147	b43_led_init_hardcoded(dev, led, i);
	148	} else {
	149	led->behaviour = sprom[i] & B43_LED_BEHAVIOUR;
	150	led->activelow = !!(sprom[i] & B43_LED_ACTIVELOW);
	151	}
	152	}
	153
	154	return 0;
	155	}
	156
	157	void b43_leds_exit(struct b43_wldev *dev)
	158	{
	159	struct b43_led *led;
	160	int i;
	161
	162	for (i = 0; i < B43_NR_LEDS; i++) {
	163	led = &(dev->leds[i]);
	164	b43_led_blink_stop(led, 1);
	165	}
	166	b43_leds_switch_all(dev, 0);
	167	}
	168
	169	void b43_leds_update(struct b43_wldev *dev, int activity)
	170	{
	171	struct b43_led *led;
	172	struct b43_phy *phy = &dev->phy;
	173	const int transferring =
	174	(jiffies - dev->stats.last_tx) < B43_LED_XFER_THRES;
	175	int i, turn_on;
	176	unsigned long interval = 0;
	177	u16 ledctl;
	178	unsigned long flags;
05155c83	179	bool radio_enabled = (phy->radio_on && dev->radio_hw_enable);
e4d6b795 MB	180
	181	spin_lock_irqsave(&dev->wl->leds_lock, flags);
	182	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
	183	for (i = 0; i < B43_NR_LEDS; i++) {
	184	led = &(dev->leds[i]);
	185
	186	turn_on = 0;
	187	switch (led->behaviour) {
	188	case B43_LED_INACTIVE:
	189	continue;
	190	case B43_LED_OFF:
	191	break;
	192	case B43_LED_ON:
	193	turn_on = 1;
	194	break;
	195	case B43_LED_ACTIVITY:
	196	turn_on = activity;
	197	break;
	198	case B43_LED_RADIO_ALL:
05155c83	199	turn_on = radio_enabled;
e4d6b795 MB	200	break;
e4d6b795 MB	201	case B43_LED_RADIO_A:
05155c83	202	turn_on = (radio_enabled && phy->type == B43_PHYTYPE_A);
e4d6b795 MB	203	break;
e4d6b795 MB	204	case B43_LED_RADIO_B:
05155c83 MB	205	turn_on = (radio_enabled &&
	206	(phy->type == B43_PHYTYPE_B
	207	\|\| phy->type == B43_PHYTYPE_G));
e4d6b795 MB	208	break;
	209	case B43_LED_MODE_BG:
	210	if (phy->type == B43_PHYTYPE_G
05155c83	211	&& radio_enabled)
e4d6b795 MB	212	turn_on = 1;
	213	break;
	214	case B43_LED_TRANSFER:
	215	if (transferring)
	216	b43_led_blink_start(led, B43_LEDBLINK_MEDIUM);
	217	else
	218	b43_led_blink_stop(led, 0);
	219	continue;
	220	case B43_LED_APTRANSFER:
	221	if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
	222	if (transferring) {
	223	interval = B43_LEDBLINK_FAST;
	224	turn_on = 1;
	225	}
	226	} else {
	227	turn_on = 1;
	228	if (0 /TODO: not assoc / )
	229	interval = B43_LEDBLINK_SLOW;
	230	else if (transferring)
	231	interval = B43_LEDBLINK_FAST;
	232	else
	233	turn_on = 0;
	234	}
	235	if (turn_on)
	236	b43_led_blink_start(led, interval);
	237	else
	238	b43_led_blink_stop(led, 0);
	239	continue;
	240	case B43_LED_WEIRD:
	241	//TODO
	242	break;
	243	case B43_LED_ASSOC:
	244	if (1 /dev->softmac->associated / )
	245	turn_on = 1;
	246	break;
	247	#ifdef CONFIG_B43_DEBUG
	248	case B43_LED_TEST_BLINKSLOW:
	249	b43_led_blink_start(led, B43_LEDBLINK_SLOW);
	250	continue;
	251	case B43_LED_TEST_BLINKMEDIUM:
	252	b43_led_blink_start(led, B43_LEDBLINK_MEDIUM);
	253	continue;
	254	case B43_LED_TEST_BLINKFAST:
	255	b43_led_blink_start(led, B43_LEDBLINK_FAST);
	256	continue;
	257	#endif /* CONFIG_B43_DEBUG */
	258	default:
	259	B43_WARN_ON(1);
	260	};
	261
	262	if (led->activelow)
	263	turn_on = !turn_on;
	264	if (turn_on)
	265	ledctl \|= (1 << i);
	266	else
	267	ledctl &= ~(1 << i);
	268	}
	269	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
	270	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
	271	}
	272
	273	void b43_leds_switch_all(struct b43_wldev *dev, int on)
	274	{
	275	struct b43_led *led;
276	u16 ledctl;
277	int i;
278	int bit_on;
279	unsigned long flags;
280
281	spin_lock_irqsave(&dev->wl->leds_lock, flags);
282	ledctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
283	for (i = 0; i < B43_NR_LEDS; i++) {
284	led = &(dev->leds[i]);
285	if (led->behaviour == B43_LED_INACTIVE)
286	continue;
287	if (on)
288	bit_on = led->activelow ? 0 : 1;
289	else
290	bit_on = led->activelow ? 1 : 0;
291	if (bit_on)
292	ledctl \|= (1 << i);
293	else
294	ledctl &= ~(1 << i);
295	}
296	b43_write16(dev, B43_MMIO_GPIO_CONTROL, ledctl);
297	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
298	}