/*-
 * SPDX-License-Identifier: ISC
 *
 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
 * Copyright (c) 2002-2008 Atheros Communications, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include "opt_ah.h"

#ifdef AH_SUPPORT_AR5312

#include "ah.h"
#include "ah_internal.h"

#include "ar5312/ar5312.h"
#include "ar5312/ar5312reg.h"
#include "ar5212/ar5212desc.h"

/*
 * Notify Power Mgt is enabled in self-generated frames.
 * If requested, force chip awake.
 *
 * Returns A_OK if chip is awake or successfully forced awake.
 *
 * WARNING WARNING WARNING
 * There is a problem with the chip where sometimes it will not wake up.
 */
static HAL_BOOL
ar5312SetPowerModeAwake(struct ath_hal *ah, int setChip)
{
        /* No need for this at the moment for APs */
        return AH_TRUE;
}

/*
 * Notify Power Mgt is disabled in self-generated frames.
 * If requested, force chip to sleep.
 */
static void
ar5312SetPowerModeSleep(struct ath_hal *ah, int setChip)
{
        /* No need for this at the moment for APs */
}

/*
 * Notify Power Management is enabled in self-generating
 * fames.  If request, set power mode of chip to
 * auto/normal.  Duration in units of 128us (1/8 TU).
 */
static void
ar5312SetPowerModeNetworkSleep(struct ath_hal *ah, int setChip)
{
        /* No need for this at the moment for APs */
}

/*
 * Set power mgt to the requested mode, and conditionally set
 * the chip as well
 */
HAL_BOOL
ar5312SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip)
{
#ifdef AH_DEBUG
        static const char* modes[] = {
                "AWAKE",
                "FULL-SLEEP",
                "NETWORK SLEEP",
                "UNDEFINED"
        };
#endif
        int status = AH_TRUE;

        HALDEBUG(ah, HAL_DEBUG_POWER, "%s: %s -> %s (%s)\n", __func__,
                modes[ah->ah_powerMode], modes[mode],
                setChip ? "set chip " : "");
        switch (mode) {
        case HAL_PM_AWAKE:
                status = ar5312SetPowerModeAwake(ah, setChip);
                break;
        case HAL_PM_FULL_SLEEP:
                ar5312SetPowerModeSleep(ah, setChip);
                break;
        case HAL_PM_NETWORK_SLEEP:
                ar5312SetPowerModeNetworkSleep(ah, setChip);
                break;
        default:
                HALDEBUG(ah, HAL_DEBUG_POWER, "%s: unknown power mode %u\n",
                    __func__, mode);
                return AH_FALSE;
        }
        ah->ah_powerMode = mode;
        return status; 
}

/*
 * Return the current sleep mode of the chip
 */
uint32_t
ar5312GetPowerMode(struct ath_hal *ah)
{
        return HAL_PM_AWAKE;
}

/*
 * Return the current sleep state of the chip
 * TRUE = sleeping
 */
HAL_BOOL
ar5312GetPowerStatus(struct ath_hal *ah)
{
        return 0;               /* Currently, 5312 is never in sleep mode. */
}
#endif /* AH_SUPPORT_AR5312 */