1107120Sjulian/* 2107120Sjulian * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 3139823Simp * Copyright (c) 2002-2004 Atheros Communications, Inc. 4139823Simp * 5139823Simp * Permission to use, copy, modify, and/or distribute this software for any 6107120Sjulian * purpose with or without fee is hereby granted, provided that the above 7107120Sjulian * copyright notice and this permission notice appear in all copies. 8107120Sjulian * 9107120Sjulian * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10107120Sjulian * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11107120Sjulian * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12107120Sjulian * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13107120Sjulian * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14107120Sjulian * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15107120Sjulian * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16107120Sjulian * 17107120Sjulian * $FreeBSD: releng/11.0/sys/dev/ath/ath_hal/ar5210/ar5210_power.c 265112 2014-04-30 02:03:13Z adrian $ 18107120Sjulian */ 19107120Sjulian#include "opt_ah.h" 20107120Sjulian 21107120Sjulian#include "ah.h" 22107120Sjulian#include "ah_internal.h" 23107120Sjulian 24107120Sjulian#include "ar5210/ar5210.h" 25107120Sjulian#include "ar5210/ar5210reg.h" 26107120Sjulian 27107120Sjulian/* 28107120Sjulian * Notify Power Mgt is disabled in self-generated frames. 29107120Sjulian * If requested, set Power Mode of chip to auto/normal. 30121054Semax */ 31107120Sjulianstatic void 32107120Sjulianar5210SetPowerModeAuto(struct ath_hal *ah, int setChip) 33107120Sjulian{ 34107120Sjulian OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV); 35122634Semax if (setChip) 36107120Sjulian OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_ALLOW); 37107120Sjulian} 38107120Sjulian 39107120Sjulian/* 40107120Sjulian * Notify Power Mgt is enabled in self-generated frames. 41107120Sjulian * If requested, force chip awake. 42107120Sjulian * 43107120Sjulian * Returns A_OK if chip is awake or successfully forced awake. 44114878Sjulian * 45114878Sjulian * WARNING WARNING WARNING 46107120Sjulian * There is a problem with the chip where sometimes it will not wake up. 47107120Sjulian */ 48107120Sjulianstatic HAL_BOOL 49107120Sjulianar5210SetPowerModeAwake(struct ath_hal *ah, int setChip) 50107120Sjulian{ 51107120Sjulian#define POWER_UP_TIME 2000 52107120Sjulian uint32_t val; 53107120Sjulian int i; 54107120Sjulian 55107120Sjulian if (setChip) { 56107120Sjulian OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_WAKE); 57107120Sjulian OS_DELAY(2000); /* Give chip the chance to awake */ 58107120Sjulian 59107120Sjulian for (i = POWER_UP_TIME / 200; i != 0; i--) { 60107120Sjulian val = OS_REG_READ(ah, AR_PCICFG); 61107120Sjulian if ((val & AR_PCICFG_SPWR_DN) == 0) 62107120Sjulian break; 63107120Sjulian OS_DELAY(200); 64107120Sjulian OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, 65114878Sjulian AR_SCR_SLE_WAKE); 66107120Sjulian } 67107120Sjulian if (i == 0) { 68107120Sjulian#ifdef AH_DEBUG 69107120Sjulian ath_hal_printf(ah, "%s: Failed to wakeup in %ums\n", 70107120Sjulian __func__, POWER_UP_TIME/20); 71114878Sjulian#endif 72107120Sjulian return AH_FALSE; 73107120Sjulian } 74107120Sjulian } 75107120Sjulian 76149355Spjd OS_REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV); 77107120Sjulian return AH_TRUE; 78107120Sjulian#undef POWER_UP_TIME 79184205Sdes} 80107120Sjulian 81107120Sjulian/* 82107120Sjulian * Notify Power Mgt is disabled in self-generated frames. 83107120Sjulian * If requested, force chip to sleep. 84107120Sjulian */ 85107120Sjulianstatic void 86107120Sjulianar5210SetPowerModeSleep(struct ath_hal *ah, int setChip) 87107120Sjulian{ 88107120Sjulian OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV); 89107120Sjulian if (setChip) 90107120Sjulian OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_SLP); 91121054Semax} 92121054Semax 93121054SemaxHAL_BOOL 94121054Semaxar5210SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip) 95121054Semax{ 96121054Semax#ifdef AH_DEBUG 97107120Sjulian static const char* modes[] = { 98107120Sjulian "AWAKE", 99107120Sjulian "FULL-SLEEP", 100107120Sjulian "NETWORK SLEEP", 101107120Sjulian "UNDEFINED" 102107120Sjulian }; 103107120Sjulian#endif 104107120Sjulian int status = AH_TRUE; 105107120Sjulian 106107120Sjulian HALDEBUG(ah, HAL_DEBUG_POWER, "%s: %s -> %s (%s)\n", __func__, 107 modes[ah->ah_powerMode], modes[mode], 108 setChip ? "set chip " : ""); 109 switch (mode) { 110 case HAL_PM_AWAKE: 111 if (setChip) 112 ah->ah_powerMode = mode; 113 status = ar5210SetPowerModeAwake(ah, setChip); 114 break; 115 case HAL_PM_FULL_SLEEP: 116 ar5210SetPowerModeSleep(ah, setChip); 117 if (setChip) 118 ah->ah_powerMode = mode; 119 break; 120 case HAL_PM_NETWORK_SLEEP: 121 ar5210SetPowerModeAuto(ah, setChip); 122 if (setChip) 123 ah->ah_powerMode = mode; 124 break; 125 default: 126 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown power mode %u\n", 127 __func__, mode); 128 return AH_FALSE; 129 } 130 return status; 131} 132 133HAL_POWER_MODE 134ar5210GetPowerMode(struct ath_hal *ah) 135{ 136 /* Just so happens the h/w maps directly to the abstracted value */ 137 return MS(OS_REG_READ(ah, AR_SCR), AR_SCR_SLE); 138} 139