[people/ms/linux.git] / drivers / net / wireless / b43legacy / leds.c

/*

  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);
}
Commit	Line	Data
75388acd LF	1	/*
	2
	3	Broadcom B43legacy 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	Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
	11
	12	This program is free software; you can redistribute it and/or modify
	13	it under the terms of the GNU General Public License as published by
	14	the Free Software Foundation; either version 2 of the License, or
	15	(at your option) any later version.
	16
	17	This program is distributed in the hope that it will be useful,
	18	but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	GNU General Public License for more details.
	21
	22	You should have received a copy of the GNU General Public License
	23	along with this program; see the file COPYING. If not, write to
	24	the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
	25	Boston, MA 02110-1301, USA.
	26
	27	*/
	28
	29	#include "leds.h"
	30	#include "b43legacy.h"
	31	#include "main.h"
	32
	33	static void b43legacy_led_changestate(struct b43legacy_led *led)
	34	{
	35	struct b43legacy_wldev *dev = led->dev;
	36	const int index = led->index;
	37	u16 ledctl;
	38
	39	B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS));
	40	B43legacy_WARN_ON(!led->blink_interval);
	41	ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
	42	ledctl ^= (1 << index);
	43	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
	44	}
	45
	46	static void b43legacy_led_blink(unsigned long d)
	47	{
	48	struct b43legacy_led led = (struct b43legacy_led )d;
	49	struct b43legacy_wldev *dev = led->dev;
	50	unsigned long flags;
	51
	52	spin_lock_irqsave(&dev->wl->leds_lock, flags);
	53	if (led->blink_interval) {
	54	b43legacy_led_changestate(led);
	55	mod_timer(&led->blink_timer, jiffies + led->blink_interval);
	56	}
	57	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
	58	}
	59
	60	static void b43legacy_led_blink_start(struct b43legacy_led *led,
	61	unsigned long interval)
	62	{
	63	if (led->blink_interval)
	64	return;
65	led->blink_interval = interval;
66	b43legacy_led_changestate(led);
67	led->blink_timer.expires = jiffies + interval;
68	add_timer(&led->blink_timer);
69	}
70
71	static void b43legacy_led_blink_stop(struct b43legacy_led *led, int sync)
72	{
73	struct b43legacy_wldev *dev = led->dev;
74	const int index = led->index;
75	u16 ledctl;
76
77	if (!led->blink_interval)
78	return;
79	if (unlikely(sync))
80	del_timer_sync(&led->blink_timer);
81	else
82	del_timer(&led->blink_timer);
83	led->blink_interval = 0;
84
85	/* Make sure the LED is turned off. */
86	B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS));
87	ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
88	if (led->activelow)
89	ledctl \|= (1 << index);
90	else
91	ledctl &= ~(1 << index);
92	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
93	}
94
95	static void b43legacy_led_init_hardcoded(struct b43legacy_wldev *dev,
96	struct b43legacy_led *led,
97	int led_index)
98	{
99	struct ssb_bus *bus = dev->dev->bus;
100
101	/* This function is called, if the behaviour (and activelow)
102	* information for a LED is missing in the SPROM.
103	* We hardcode the behaviour values for various devices here.
104	* Note that the B43legacy_LED_TEST_XXX behaviour values can
105	* be used to figure out which led is mapped to which index.
106	*/
107
108	switch (led_index) {
109	case 0:
110	led->behaviour = B43legacy_LED_ACTIVITY;
111	led->activelow = 1;
112	if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
113	led->behaviour = B43legacy_LED_RADIO_ALL;
114	break;
115	case 1:
116	led->behaviour = B43legacy_LED_RADIO_B;
117	if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
118	led->behaviour = B43legacy_LED_ASSOC;
119	break;
120	case 2:
121	led->behaviour = B43legacy_LED_RADIO_A;
122	break;
123	case 3:
124	led->behaviour = B43legacy_LED_OFF;
125	break;
126	default:
127	B43legacy_BUG_ON(1);
128	}
129	}
130
131	int b43legacy_leds_init(struct b43legacy_wldev *dev)
132	{
133	struct b43legacy_led *led;
134	u8 sprom[4];
135	int i;
136
137	sprom[0] = dev->dev->bus->sprom.r1.gpio0;
138	sprom[1] = dev->dev->bus->sprom.r1.gpio1;
139	sprom[2] = dev->dev->bus->sprom.r1.gpio2;
140	sprom[3] = dev->dev->bus->sprom.r1.gpio3;
141
142	for (i = 0; i < B43legacy_NR_LEDS; i++) {
143	led = &(dev->leds[i]);
144	led->index = i;
145	led->dev = dev;
146	setup_timer(&led->blink_timer,
147	b43legacy_led_blink,
148	(unsigned long)led);
149
150	if (sprom[i] == 0xFF)
151	b43legacy_led_init_hardcoded(dev, led, i);
152	else {
153	led->behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
154	led->activelow = !!(sprom[i] &
155	B43legacy_LED_ACTIVELOW);
156	}
157	}
158
159	return 0;
160	}
161
162	void b43legacy_leds_exit(struct b43legacy_wldev *dev)
163	{
164	struct b43legacy_led *led;
165	int i;
166
167	for (i = 0; i < B43legacy_NR_LEDS; i++) {
168	led = &(dev->leds[i]);
169	b43legacy_led_blink_stop(led, 1);
170	}
171	b43legacy_leds_switch_all(dev, 0);
172	}
173
174	void b43legacy_leds_update(struct b43legacy_wldev *dev, int activity)
175	{
176	struct b43legacy_led *led;
177	struct b43legacy_phy *phy = &dev->phy;
178	const int transferring = (jiffies - dev->stats.last_tx)
179	< B43legacy_LED_XFER_THRES;
180	int i;
181	int turn_on;
182	unsigned long interval = 0;
183	u16 ledctl;
184	unsigned long flags;
185
186	spin_lock_irqsave(&dev->wl->leds_lock, flags);
187	ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
188	for (i = 0; i < B43legacy_NR_LEDS; i++) {
189	led = &(dev->leds[i]);
190
191	turn_on = 0;
192	switch (led->behaviour) {
193	case B43legacy_LED_INACTIVE:
194	continue;
195	case B43legacy_LED_OFF:
196	break;
197	case B43legacy_LED_ON:
198	turn_on = 1;
199	break;
200	case B43legacy_LED_ACTIVITY:
201	turn_on = activity;
202	break;
203	case B43legacy_LED_RADIO_ALL:
204	turn_on = phy->radio_on &&
205	b43legacy_is_hw_radio_enabled(dev);
206	break;
207	case B43legacy_LED_RADIO_A:
208	break;
209	case B43legacy_LED_RADIO_B:
210	turn_on = (phy->radio_on &&
211	b43legacy_is_hw_radio_enabled(dev) &&
212	(phy->type == B43legacy_PHYTYPE_B \|\|
213	phy->type == B43legacy_PHYTYPE_G));
214	break;
215	case B43legacy_LED_MODE_BG:
216	if (phy->type == B43legacy_PHYTYPE_G &&
217	b43legacy_is_hw_radio_enabled(dev))
218	turn_on = 1;
219	break;
220	case B43legacy_LED_TRANSFER:
221	if (transferring)
222	b43legacy_led_blink_start(led,
223	B43legacy_LEDBLINK_MEDIUM);
224	else
225	b43legacy_led_blink_stop(led, 0);
226	continue;
227	case B43legacy_LED_APTRANSFER:
228	if (b43legacy_is_mode(dev->wl,
229	IEEE80211_IF_TYPE_AP)) {
230	if (transferring) {
231	interval = B43legacy_LEDBLINK_FAST;
232	turn_on = 1;
233	}
234	} else {
235	turn_on = 1;
236	if (transferring)
237	interval = B43legacy_LEDBLINK_FAST;
238	else
239	turn_on = 0;
240	}
241	if (turn_on)
242	b43legacy_led_blink_start(led, interval);
243	else
244	b43legacy_led_blink_stop(led, 0);
245	continue;
246	case B43legacy_LED_WEIRD:
247	break;
248	case B43legacy_LED_ASSOC:
249	turn_on = 1;
250	#ifdef CONFIG_B43LEGACY_DEBUG
251	case B43legacy_LED_TEST_BLINKSLOW:
252	b43legacy_led_blink_start(led, B43legacy_LEDBLINK_SLOW);
253	continue;
254	case B43legacy_LED_TEST_BLINKMEDIUM:
255	b43legacy_led_blink_start(led,
256	B43legacy_LEDBLINK_MEDIUM);
257	continue;
258	case B43legacy_LED_TEST_BLINKFAST:
259	b43legacy_led_blink_start(led, B43legacy_LEDBLINK_FAST);
260	continue;
261	#endif /* CONFIG_B43LEGACY_DEBUG */
262	default:
263	B43legacy_BUG_ON(1);
264	};
265
266	if (led->activelow)
267	turn_on = !turn_on;
268	if (turn_on)
269	ledctl \|= (1 << i);
270	else
271	ledctl &= ~(1 << i);
272	}
273	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
274	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
275	}
276
277	void b43legacy_leds_switch_all(struct b43legacy_wldev *dev, int on)
278	{
279	struct b43legacy_led *led;
280	u16 ledctl;
281	int i;
282	int bit_on;
283	unsigned long flags;
284
285	spin_lock_irqsave(&dev->wl->leds_lock, flags);
286	ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
287	for (i = 0; i < B43legacy_NR_LEDS; i++) {
288	led = &(dev->leds[i]);
289	if (led->behaviour == B43legacy_LED_INACTIVE)
290	continue;
291	if (on)
292	bit_on = led->activelow ? 0 : 1;
293	else
294	bit_on = led->activelow ? 1 : 0;
295	if (bit_on)
296	ledctl \|= (1 << i);
297	else
298	ledctl &= ~(1 << i);
299	}
300	b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
301	spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
302	}