diff options
Diffstat (limited to 'ar5210/ar5210_power.c')
| -rw-r--r-- | ar5210/ar5210_power.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/ar5210/ar5210_power.c b/ar5210/ar5210_power.c new file mode 100644 index 0000000..dcece25 --- /dev/null +++ b/ar5210/ar5210_power.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting + * Copyright (c) 2002-2004 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. + * + * $Id: ar5210_power.c,v 1.4 2008/11/10 04:08:02 sam Exp $ + */ +#include "opt_ah.h" + +#ifdef AH_SUPPORT_AR5210 + +#include "ah.h" +#include "ah_internal.h" + +#include "ar5210/ar5210.h" +#include "ar5210/ar5210reg.h" + +/* + * Notify Power Mgt is disabled in self-generated frames. + * If requested, set Power Mode of chip to auto/normal. + */ +static void +ar5210SetPowerModeAuto(struct ath_hal *ah, int setChip) +{ + OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV); + if (setChip) + OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_ALLOW); +} + +/* + * 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 +ar5210SetPowerModeAwake(struct ath_hal *ah, int setChip) +{ +#define POWER_UP_TIME 2000 + uint32_t val; + int i; + + if (setChip) { + OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_WAKE); + OS_DELAY(2000); /* Give chip the chance to awake */ + + for (i = POWER_UP_TIME / 200; i != 0; i--) { + val = OS_REG_READ(ah, AR_PCICFG); + if ((val & AR_PCICFG_SPWR_DN) == 0) + break; + OS_DELAY(200); + OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, + AR_SCR_SLE_WAKE); + } + if (i == 0) { +#ifdef AH_DEBUG + ath_hal_printf(ah, "%s: Failed to wakeup in %ums\n", + __func__, POWER_UP_TIME/20); +#endif + return AH_FALSE; + } + } + + OS_REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV); + return AH_TRUE; +#undef POWER_UP_TIME +} + +/* + * Notify Power Mgt is disabled in self-generated frames. + * If requested, force chip to sleep. + */ +static void +ar5210SetPowerModeSleep(struct ath_hal *ah, int setChip) +{ + OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV); + if (setChip) + OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_SLP); +} + +HAL_BOOL +ar5210SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip) +{ + struct ath_hal_5210 *ahp = AH5210(ah); +#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[ahp->ah_powerMode], modes[mode], + setChip ? "set chip " : ""); + switch (mode) { + case HAL_PM_AWAKE: + status = ar5210SetPowerModeAwake(ah, setChip); + break; + case HAL_PM_FULL_SLEEP: + ar5210SetPowerModeSleep(ah, setChip); + break; + case HAL_PM_NETWORK_SLEEP: + ar5210SetPowerModeAuto(ah, setChip); + break; + default: + HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown power mode %u\n", + __func__, mode); + return AH_FALSE; + } + ahp->ah_powerMode = mode; + return status; +} + +HAL_POWER_MODE +ar5210GetPowerMode(struct ath_hal *ah) +{ + /* Just so happens the h/w maps directly to the abstracted value */ + return MS(OS_REG_READ(ah, AR_SCR), AR_SCR_SLE); +} +#endif /* AH_SUPPORT_AR5210 */ |
