ar5312_power.c

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    1 /*-
    2  * SPDX-License-Identifier: ISC
    3  *
    4  * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
    5  * Copyright (c) 2002-2008 Atheros Communications, Inc.
    6  *
    7  * Permission to use, copy, modify, and/or distribute this software for any
    8  * purpose with or without fee is hereby granted, provided that the above
    9  * copyright notice and this permission notice appear in all copies.
   10  *
   11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   18  *
   19  * $FreeBSD$
   20  */
   21 #include "opt_ah.h"
   22 
   23 #ifdef AH_SUPPORT_AR5312
   24 
   25 #include "ah.h"
   26 #include "ah_internal.h"
   27 
   28 #include "ar5312/ar5312.h"
   29 #include "ar5312/ar5312reg.h"
   30 #include "ar5212/ar5212desc.h"
   31 
   32 /*
   33  * Notify Power Mgt is enabled in self-generated frames.
   34  * If requested, force chip awake.
   35  *
   36  * Returns A_OK if chip is awake or successfully forced awake.
   37  *
   38  * WARNING WARNING WARNING
   39  * There is a problem with the chip where sometimes it will not wake up.
   40  */
   41 static HAL_BOOL
   42 ar5312SetPowerModeAwake(struct ath_hal *ah, int setChip)
   43 {
   44         /* No need for this at the moment for APs */
   45         return AH_TRUE;
   46 }
   47 
   48 /*
   49  * Notify Power Mgt is disabled in self-generated frames.
   50  * If requested, force chip to sleep.
   51  */
   52 static void
   53 ar5312SetPowerModeSleep(struct ath_hal *ah, int setChip)
   54 {
   55         /* No need for this at the moment for APs */
   56 }
   57 
   58 /*
   59  * Notify Power Management is enabled in self-generating
   60  * fames.  If request, set power mode of chip to
   61  * auto/normal.  Duration in units of 128us (1/8 TU).
   62  */
   63 static void
   64 ar5312SetPowerModeNetworkSleep(struct ath_hal *ah, int setChip)
   65 {
   66         /* No need for this at the moment for APs */
   67 }
   68 
   69 /*
   70  * Set power mgt to the requested mode, and conditionally set
   71  * the chip as well
   72  */
   73 HAL_BOOL
   74 ar5312SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip)
   75 {
   76 #ifdef AH_DEBUG
   77         static const char* modes[] = {
   78                 "AWAKE",
   79                 "FULL-SLEEP",
   80                 "NETWORK SLEEP",
   81                 "UNDEFINED"
   82         };
   83 #endif
   84         int status = AH_TRUE;
   85 
   86         HALDEBUG(ah, HAL_DEBUG_POWER, "%s: %s -> %s (%s)\n", __func__,
   87                 modes[ah->ah_powerMode], modes[mode],
   88                 setChip ? "set chip " : "");
   89         switch (mode) {
   90         case HAL_PM_AWAKE:
   91                 status = ar5312SetPowerModeAwake(ah, setChip);
   92                 break;
   93         case HAL_PM_FULL_SLEEP:
   94                 ar5312SetPowerModeSleep(ah, setChip);
   95                 break;
   96         case HAL_PM_NETWORK_SLEEP:
   97                 ar5312SetPowerModeNetworkSleep(ah, setChip);
   98                 break;
   99         default:
  100                 HALDEBUG(ah, HAL_DEBUG_POWER, "%s: unknown power mode %u\n",
  101                     __func__, mode);
  102                 return AH_FALSE;
  103         }
  104         ah->ah_powerMode = mode;
  105         return status; 
  106 }
  107 
  108 /*
  109  * Return the current sleep mode of the chip
  110  */
  111 uint32_t
  112 ar5312GetPowerMode(struct ath_hal *ah)
  113 {
  114         return HAL_PM_AWAKE;
  115 }
  116 
  117 /*
  118  * Return the current sleep state of the chip
  119  * TRUE = sleeping
  120  */
  121 HAL_BOOL
  122 ar5312GetPowerStatus(struct ath_hal *ah)
  123 {
  124         return 0;               /* Currently, 5312 is never in sleep mode. */
  125 }
  126 #endif /* AH_SUPPORT_AR5312 */

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FreeBSD/Linux Kernel Cross Reference sys/dev/ath/ath_hal/ar5312/ar5312_power.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/ath_hal/ar5312/ar5312_power.c