drivers/net/wireless/bcm43xx/bcm43xx_leds.c - linux - Git at Google

 /*

   Broadcom BCM43xx wireless driver

   Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
                      Stefano Brivio <st3@riseup.net>
                      Michael Buesch <mbuesch@freenet.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 "bcm43xx_leds.h"
 #include "bcm43xx.h"

 #include <asm/bitops.h>


 static void bcm43xx_led_changestate(struct bcm43xx_led *led)
 {
 	struct bcm43xx_private *bcm = led->bcm;
 	const int index = bcm43xx_led_index(led);
 	const u16 mask = (1 << index);
 	u16 ledctl;

 	assert(index >= 0 && index < BCM43xx_NR_LEDS);
 	assert(led->blink_interval);
 	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
 	ledctl = (ledctl & mask) ? (ledctl & ~mask) : (ledctl | mask);
 	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
 }

 static void bcm43xx_led_blink(unsigned long d)
 {
 	struct bcm43xx_led *led = (struct bcm43xx_led *)d;
 	struct bcm43xx_private *bcm = led->bcm;
 	unsigned long flags;

 	bcm43xx_lock_mmio(bcm, flags);
 	if (led->blink_interval) {
 		bcm43xx_led_changestate(led);
 		mod_timer(&led->blink_timer, jiffies + led->blink_interval);
 	}
 	bcm43xx_unlock_mmio(bcm, flags);
 }

 static void bcm43xx_led_blink_start(struct bcm43xx_led *led,
 				    unsigned long interval)
 {
 	if (led->blink_interval)
 		return;
 	led->blink_interval = interval;
 	bcm43xx_led_changestate(led);
 	led->blink_timer.expires = jiffies + interval;
 	add_timer(&led->blink_timer);
 }

 static void bcm43xx_led_blink_stop(struct bcm43xx_led *led, int sync)
 {
 	struct bcm43xx_private *bcm = led->bcm;
 	const int index = bcm43xx_led_index(led);
 	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. */
 	assert(index >= 0 && index < BCM43xx_NR_LEDS);
 	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
 	if (led->activelow)
 		ledctl |= (1 << index);
 	else
 		ledctl &= ~(1 << index);
 	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
 }

 static void bcm43xx_led_init_hardcoded(struct bcm43xx_private *bcm,
 				       struct bcm43xx_led *led,
 				       int led_index)
 {
 	/* 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 BCM43xx_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 = BCM43xx_LED_ACTIVITY;
 		if (bcm->board_vendor == PCI_VENDOR_ID_COMPAQ)
 			led->behaviour = BCM43xx_LED_RADIO_ALL;
 		break;
 	case 1:
 		led->behaviour = BCM43xx_LED_RADIO_B;
 		if (bcm->board_vendor == PCI_VENDOR_ID_ASUSTEK)
 			led->behaviour = BCM43xx_LED_ASSOC;
 		break;
 	case 2:
 		led->behaviour = BCM43xx_LED_RADIO_A;
 		break;
 	case 3:
 		led->behaviour = BCM43xx_LED_OFF;
 		break;
 	default:
 		assert(0);
 	}
 }

 int bcm43xx_leds_init(struct bcm43xx_private *bcm)
 {
 	struct bcm43xx_led *led;
 	u8 sprom[4];
 	int i;

 	sprom[0] = bcm->sprom.wl0gpio0;
 	sprom[1] = bcm->sprom.wl0gpio1;
 	sprom[2] = bcm->sprom.wl0gpio2;
 	sprom[3] = bcm->sprom.wl0gpio3;

 	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
 		led = &(bcm->leds[i]);
 		led->bcm = bcm;
 		setup_timer(&led->blink_timer,
 			    bcm43xx_led_blink,
 			    (unsigned long)led);

 		if (sprom[i] == 0xFF) {
 			bcm43xx_led_init_hardcoded(bcm, led, i);
 		} else {
 			led->behaviour = sprom[i] & BCM43xx_LED_BEHAVIOUR;
 			led->activelow = !!(sprom[i] & BCM43xx_LED_ACTIVELOW);
 		}
 	}

 	return 0;
 }

 void bcm43xx_leds_exit(struct bcm43xx_private *bcm)
 {
 	struct bcm43xx_led *led;
 	int i;

 	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
 		led = &(bcm->leds[i]);
 		bcm43xx_led_blink_stop(led, 1);
 	}
 	bcm43xx_leds_switch_all(bcm, 0);
 }

 void bcm43xx_leds_update(struct bcm43xx_private *bcm, int activity)
 {
 	struct bcm43xx_led *led;
 	struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
 	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
 	const int transferring = (jiffies - bcm->stats.last_tx) < BCM43xx_LED_XFER_THRES;
 	int i, turn_on;
 	unsigned long interval = 0;
 	u16 ledctl;

 	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
 	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
 		led = &(bcm->leds[i]);

 		turn_on = 0;
 		switch (led->behaviour) {
 		case BCM43xx_LED_INACTIVE:
 			continue;
 		case BCM43xx_LED_OFF:
 			break;
 		case BCM43xx_LED_ON:
 			turn_on = 1;
 			break;
 		case BCM43xx_LED_ACTIVITY:
 			turn_on = activity;
 			break;
 		case BCM43xx_LED_RADIO_ALL:
 			turn_on = radio->enabled;
 			break;
 		case BCM43xx_LED_RADIO_A:
 			turn_on = (radio->enabled && phy->type == BCM43xx_PHYTYPE_A);
 			break;
 		case BCM43xx_LED_RADIO_B:
 			turn_on = (radio->enabled &&
 				   (phy->type == BCM43xx_PHYTYPE_B ||
 				    phy->type == BCM43xx_PHYTYPE_G));
 			break;
 		case BCM43xx_LED_MODE_BG:
 			if (phy->type == BCM43xx_PHYTYPE_G &&
 			    1/*FIXME: using G rates.*/)
 				turn_on = 1;
 			break;
 		case BCM43xx_LED_TRANSFER:
 			if (transferring)
 				bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_MEDIUM);
 			else
 				bcm43xx_led_blink_stop(led, 0);
 			continue;
 		case BCM43xx_LED_APTRANSFER:
 			if (bcm->ieee->iw_mode == IW_MODE_MASTER) {
 				if (transferring) {
 					interval = BCM43xx_LEDBLINK_FAST;
 					turn_on = 1;
 				}
 			} else {
 				turn_on = 1;
 				if (0/*TODO: not assoc*/)
 					interval = BCM43xx_LEDBLINK_SLOW;
 				else if (transferring)
 					interval = BCM43xx_LEDBLINK_FAST;
 				else
 					turn_on = 0;
 			}
 			if (turn_on)
 				bcm43xx_led_blink_start(led, interval);
 			else
 				bcm43xx_led_blink_stop(led, 0);
 			continue;
 		case BCM43xx_LED_WEIRD:
 			//TODO
 			break;
 		case BCM43xx_LED_ASSOC:
 			if (bcm->softmac->associated)
 				turn_on = 1;
 			break;
 #ifdef CONFIG_BCM43XX_DEBUG
 		case BCM43xx_LED_TEST_BLINKSLOW:
 			bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_SLOW);
 			continue;
 		case BCM43xx_LED_TEST_BLINKMEDIUM:
 			bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_MEDIUM);
 			continue;
 		case BCM43xx_LED_TEST_BLINKFAST:
 			bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_FAST);
 			continue;
 #endif /* CONFIG_BCM43XX_DEBUG */
 		default:
 			assert(0);
 		};

 		if (led->activelow)
 			turn_on = !turn_on;
 		if (turn_on)
 			ledctl |= (1 << i);
 		else
 			ledctl &= ~(1 << i);
 	}
 	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
 }

 void bcm43xx_leds_switch_all(struct bcm43xx_private *bcm, int on)
 {
 	struct bcm43xx_led *led;
 	u16 ledctl;
 	int i;
 	int bit_on;

 	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
 	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
 		led = &(bcm->leds[i]);
 		if (led->behaviour == BCM43xx_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);
 	}
 	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
 }
	/*

	Broadcom BCM43xx wireless driver

	Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
	Stefano Brivio <st3@riseup.net>
	Michael Buesch <mbuesch@freenet.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 "bcm43xx_leds.h"
	#include "bcm43xx.h"

	#include <asm/bitops.h>


	static void bcm43xx_led_changestate(struct bcm43xx_led *led)
	{
	struct bcm43xx_private *bcm = led->bcm;
	const int index = bcm43xx_led_index(led);
	const u16 mask = (1 << index);
	u16 ledctl;

	assert(index >= 0 && index < BCM43xx_NR_LEDS);
	assert(led->blink_interval);
	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
	ledctl = (ledctl & mask) ? (ledctl & ~mask) : (ledctl \| mask);
	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
	}

	static void bcm43xx_led_blink(unsigned long d)
	{
	struct bcm43xx_led led = (struct bcm43xx_led )d;
	struct bcm43xx_private *bcm = led->bcm;
	unsigned long flags;

	bcm43xx_lock_mmio(bcm, flags);
	if (led->blink_interval) {
	bcm43xx_led_changestate(led);
	mod_timer(&led->blink_timer, jiffies + led->blink_interval);
	}
	bcm43xx_unlock_mmio(bcm, flags);
	}

	static void bcm43xx_led_blink_start(struct bcm43xx_led *led,
	unsigned long interval)
	{
	if (led->blink_interval)
	return;
	led->blink_interval = interval;
	bcm43xx_led_changestate(led);
	led->blink_timer.expires = jiffies + interval;
	add_timer(&led->blink_timer);
	}

	static void bcm43xx_led_blink_stop(struct bcm43xx_led *led, int sync)
	{
	struct bcm43xx_private *bcm = led->bcm;
	const int index = bcm43xx_led_index(led);
	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. */
	assert(index >= 0 && index < BCM43xx_NR_LEDS);
	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
	if (led->activelow)
	ledctl \|= (1 << index);
	else
	ledctl &= ~(1 << index);
	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
	}

	static void bcm43xx_led_init_hardcoded(struct bcm43xx_private *bcm,
	struct bcm43xx_led *led,
	int led_index)
	{
	/* 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 BCM43xx_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 = BCM43xx_LED_ACTIVITY;
	if (bcm->board_vendor == PCI_VENDOR_ID_COMPAQ)
	led->behaviour = BCM43xx_LED_RADIO_ALL;
	break;
	case 1:
	led->behaviour = BCM43xx_LED_RADIO_B;
	if (bcm->board_vendor == PCI_VENDOR_ID_ASUSTEK)
	led->behaviour = BCM43xx_LED_ASSOC;
	break;
	case 2:
	led->behaviour = BCM43xx_LED_RADIO_A;
	break;
	case 3:
	led->behaviour = BCM43xx_LED_OFF;
	break;
	default:
	assert(0);
	}
	}

	int bcm43xx_leds_init(struct bcm43xx_private *bcm)
	{
	struct bcm43xx_led *led;
	u8 sprom[4];
	int i;

	sprom[0] = bcm->sprom.wl0gpio0;
	sprom[1] = bcm->sprom.wl0gpio1;
	sprom[2] = bcm->sprom.wl0gpio2;
	sprom[3] = bcm->sprom.wl0gpio3;

	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
	led = &(bcm->leds[i]);
	led->bcm = bcm;
	setup_timer(&led->blink_timer,
	bcm43xx_led_blink,
	(unsigned long)led);

	if (sprom[i] == 0xFF) {
	bcm43xx_led_init_hardcoded(bcm, led, i);
	} else {
	led->behaviour = sprom[i] & BCM43xx_LED_BEHAVIOUR;
	led->activelow = !!(sprom[i] & BCM43xx_LED_ACTIVELOW);
	}
	}

	return 0;
	}

	void bcm43xx_leds_exit(struct bcm43xx_private *bcm)
	{
	struct bcm43xx_led *led;
	int i;

	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
	led = &(bcm->leds[i]);
	bcm43xx_led_blink_stop(led, 1);
	}
	bcm43xx_leds_switch_all(bcm, 0);
	}

	void bcm43xx_leds_update(struct bcm43xx_private *bcm, int activity)
	{
	struct bcm43xx_led *led;
	struct bcm43xx_radioinfo *radio = bcm43xx_current_radio(bcm);
	struct bcm43xx_phyinfo *phy = bcm43xx_current_phy(bcm);
	const int transferring = (jiffies - bcm->stats.last_tx) < BCM43xx_LED_XFER_THRES;
	int i, turn_on;
	unsigned long interval = 0;
	u16 ledctl;

	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
	led = &(bcm->leds[i]);

	turn_on = 0;
	switch (led->behaviour) {
	case BCM43xx_LED_INACTIVE:
	continue;
	case BCM43xx_LED_OFF:
	break;
	case BCM43xx_LED_ON:
	turn_on = 1;
	break;
	case BCM43xx_LED_ACTIVITY:
	turn_on = activity;
	break;
	case BCM43xx_LED_RADIO_ALL:
	turn_on = radio->enabled;
	break;
	case BCM43xx_LED_RADIO_A:
	turn_on = (radio->enabled && phy->type == BCM43xx_PHYTYPE_A);
	break;
	case BCM43xx_LED_RADIO_B:
	turn_on = (radio->enabled &&
	(phy->type == BCM43xx_PHYTYPE_B \|\|
	phy->type == BCM43xx_PHYTYPE_G));
	break;
	case BCM43xx_LED_MODE_BG:
	if (phy->type == BCM43xx_PHYTYPE_G &&
	1/FIXME: using G rates./)
	turn_on = 1;
	break;
	case BCM43xx_LED_TRANSFER:
	if (transferring)
	bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_MEDIUM);
	else
	bcm43xx_led_blink_stop(led, 0);
	continue;
	case BCM43xx_LED_APTRANSFER:
	if (bcm->ieee->iw_mode == IW_MODE_MASTER) {
	if (transferring) {
	interval = BCM43xx_LEDBLINK_FAST;
	turn_on = 1;
	}
	} else {
	turn_on = 1;
	if (0/TODO: not assoc/)
	interval = BCM43xx_LEDBLINK_SLOW;
	else if (transferring)
	interval = BCM43xx_LEDBLINK_FAST;
	else
	turn_on = 0;
	}
	if (turn_on)
	bcm43xx_led_blink_start(led, interval);
	else
	bcm43xx_led_blink_stop(led, 0);
	continue;
	case BCM43xx_LED_WEIRD:
	//TODO
	break;
	case BCM43xx_LED_ASSOC:
	if (bcm->softmac->associated)
	turn_on = 1;
	break;
	#ifdef CONFIG_BCM43XX_DEBUG
	case BCM43xx_LED_TEST_BLINKSLOW:
	bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_SLOW);
	continue;
	case BCM43xx_LED_TEST_BLINKMEDIUM:
	bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_MEDIUM);
	continue;
	case BCM43xx_LED_TEST_BLINKFAST:
	bcm43xx_led_blink_start(led, BCM43xx_LEDBLINK_FAST);
	continue;
	#endif /* CONFIG_BCM43XX_DEBUG */
	default:
	assert(0);
	};

	if (led->activelow)
	turn_on = !turn_on;
	if (turn_on)
	ledctl \|= (1 << i);
	else
	ledctl &= ~(1 << i);
	}
	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
	}

	void bcm43xx_leds_switch_all(struct bcm43xx_private *bcm, int on)
	{
	struct bcm43xx_led *led;
	u16 ledctl;
	int i;
	int bit_on;

	ledctl = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
	for (i = 0; i < BCM43xx_NR_LEDS; i++) {
	led = &(bcm->leds[i]);
	if (led->behaviour == BCM43xx_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);
	}
	bcm43xx_write16(bcm, BCM43xx_MMIO_GPIO_CONTROL, ledctl);
	}