workbench/devs/networks/atheros5000/hal/ar5312/ar5312_power.c

   1 /*
   2  * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
   3  * Copyright (c) 2002-2008 Atheros Communications, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  *
  17  * $Id$
  18  */
  19 #include "opt_ah.h"
  20
  21 #ifdef AH_SUPPORT_AR5312
  22
  23 #include "ah.h"
  24 #include "ah_internal.h"
  25
  26 #include "ar5312/ar5312.h"
  27 #include "ar5312/ar5312reg.h"
  28 #include "ar5212/ar5212desc.h"
  29
  30 /*
  31  * Notify Power Mgt is enabled in self-generated frames.
  32  * If requested, force chip awake.
  33  *
  34  * Returns A_OK if chip is awake or successfully forced awake.
  35  *
  36  * WARNING WARNING WARNING
  37  * There is a problem with the chip where sometimes it will not wake up.
  38  */
  39 static HAL_BOOL
  40 ar5312SetPowerModeAwake(struct ath_hal *ah, int setChip)
  41 {
  42         /* No need for this at the moment for APs */
  43         return AH_TRUE;
  44 }
  45
  46 /*
  47  * Notify Power Mgt is disabled in self-generated frames.
  48  * If requested, force chip to sleep.
  49  */
  50 static void
  51 ar5312SetPowerModeSleep(struct ath_hal *ah, int setChip)
  52 {
  53         /* No need for this at the moment for APs */
  54 }
  55
  56 /*
  57  * Notify Power Management is enabled in self-generating
  58  * fames.  If request, set power mode of chip to
  59  * auto/normal.  Duration in units of 128us (1/8 TU).
  60  */
  61 static void
  62 ar5312SetPowerModeNetworkSleep(struct ath_hal *ah, int setChip)
  63 {
  64         /* No need for this at the moment for APs */
  65 }
  66
  67 /*
  68  * Set power mgt to the requested mode, and conditionally set
  69  * the chip as well
  70  */
  71 HAL_BOOL
  72 ar5312SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip)
  73 {
  74         struct ath_hal_5212 *ahp = AH5212(ah);
  75 #ifdef AH_DEBUG
  76         static const char* modes[] = {
  77                 "AWAKE",
  78                 "FULL-SLEEP",
  79                 "NETWORK SLEEP",
  80                 "UNDEFINED"
  81         };
  82 #endif
  83         int status = AH_TRUE;
  84
  85         HALDEBUG(ah, HAL_DEBUG_POWER, "%s: %s -> %s (%s)\n", __func__,
  86                 modes[ahp->ah_powerMode], modes[mode],
  87                 setChip ? "set chip " : "");
  88         switch (mode) {
  89         case HAL_PM_AWAKE:
  90                 status = ar5312SetPowerModeAwake(ah, setChip);
  91                 break;
  92         case HAL_PM_FULL_SLEEP:
  93                 ar5312SetPowerModeSleep(ah, setChip);
  94                 break;
  95         case HAL_PM_NETWORK_SLEEP:
  96                 ar5312SetPowerModeNetworkSleep(ah, setChip);
  97                 break;
  98         default:
  99                 HALDEBUG(ah, HAL_DEBUG_POWER, "%s: unknown power mode %u\n",
 100                     __func__, mode);
 101                 return AH_FALSE;
 102         }
 103         ahp->ah_powerMode = mode;
 104         return status;
 105 }
 106
 107 /*
 108  * Return the current sleep mode of the chip
 109  */
 110 uint32_t
 111 ar5312GetPowerMode(struct ath_hal *ah)
 112 {
 113         return HAL_PM_AWAKE;
 114 }
 115
 116 /*
 117  * Return the current sleep state of the chip
 118  * TRUE = sleeping
 119  */
 120 HAL_BOOL
 121 ar5312GetPowerStatus(struct ath_hal *ah)
 122 {
 123         return 0;               /* Currently, 5312 is never in sleep mode. */
 124 }
 125 #endif /* AH_SUPPORT_AR5312 */