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path: root/drivers/net/wireless/bcm43xx/bcm43xx_leds.c
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Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_leds.c')
-rw-r--r--drivers/net/wireless/bcm43xx/bcm43xx_leds.c293
1 files changed, 293 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_leds.c b/drivers/net/wireless/bcm43xx/bcm43xx_leds.c
new file mode 100644
index 00000000000..4b2c02c0b31
--- /dev/null
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_leds.c
@@ -0,0 +1,293 @@
+/*
+
+ 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 14:51:29 +0000