freebsd-dev/sys/dev/ath/if_ath_led.c

/*-
 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * Driver for the Atheros Wireless LAN controller.
 *
 * This software is derived from work of Atsushi Onoe; his contribution
 * is greatly appreciated.
 */

#include "opt_inet.h"
#include "opt_ath.h"
/*
 * This is needed for register operations which are performed
 * by the driver - eg, calls to ath_hal_gettsf32().
 */
#include "opt_ah.h"
#include "opt_wlan.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/callout.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kthread.h>
#include <sys/taskqueue.h>
#include <sys/priv.h>
#include <sys/module.h>
#include <sys/ktr.h>
#include <sys/smp.h>	/* for mp_ncpus */

#include <machine/bus.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_llc.h>

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_regdomain.h>
#ifdef IEEE80211_SUPPORT_SUPERG
#include <net80211/ieee80211_superg.h>
#endif
#ifdef IEEE80211_SUPPORT_TDMA
#include <net80211/ieee80211_tdma.h>
#endif

#include <net/bpf.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#include <dev/ath/if_athvar.h>
#include <dev/ath/ath_hal/ah_devid.h>		/* XXX for softled */
#include <dev/ath/ath_hal/ah_diagcodes.h>

#include <dev/ath/if_ath_debug.h>
#include <dev/ath/if_ath_misc.h>

#include <dev/ath/if_ath_led.h>

/*
 * Software LED driver routines.
 */

/*
 * XXX TODO: move the LED sysctls here.
 */


/*
 * Configure the hardware for software and LED blinking.
 * The user may choose to configure part of each, depending upon the
 * NIC being used.
 *
 * This requires the configuration to be set before this function
 * is called.
 */
void
ath_led_config(struct ath_softc *sc)
{
	/* Software LED blinking - GPIO controlled LED */
	if (sc->sc_softled) {
		ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_ledpin,
		    HAL_GPIO_OUTPUT_MUX_AS_OUTPUT);
		ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, !sc->sc_ledon);
	}

	/* Hardware LED blinking - MAC controlled LED */
	if (sc->sc_hardled) {
		/*
		 * Only enable each LED if required.
		 *
		 * Some NICs only have one LED connected; others may
		 * have GPIO1/GPIO2 connected to other hardware.
		 */
		if (sc->sc_led_pwr_pin > 0)
			ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_led_pwr_pin,
			    HAL_GPIO_OUTPUT_MUX_MAC_POWER_LED);
		if (sc->sc_led_net_pin > 0)
			ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_led_net_pin,
			    HAL_GPIO_OUTPUT_MUX_MAC_NETWORK_LED);
	}
}

static void
ath_led_done(void *arg)
{
	struct ath_softc *sc = arg;

	sc->sc_blinking = 0;
}

/*
 * Turn the LED off: flip the pin and then set a timer so no
 * update will happen for the specified duration.
 */
static void
ath_led_off(void *arg)
{
	struct ath_softc *sc = arg;

	ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, !sc->sc_ledon);
	callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, ath_led_done, sc);
}

/*
 * Blink the LED according to the specified on/off times.
 */
static void
ath_led_blink(struct ath_softc *sc, int on, int off)
{
	DPRINTF(sc, ATH_DEBUG_LED, "%s: on %u off %u\n", __func__, on, off);
	ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, sc->sc_ledon);
	sc->sc_blinking = 1;
	sc->sc_ledoff = off;
	callout_reset(&sc->sc_ledtimer, on, ath_led_off, sc);
}

void
ath_led_event(struct ath_softc *sc, int rix)
{
	sc->sc_ledevent = ticks;	/* time of last event */
	if (sc->sc_blinking)		/* don't interrupt active blink */
		return;
	ath_led_blink(sc, sc->sc_hwmap[rix].ledon, sc->sc_hwmap[rix].ledoff);
}