2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2006 Atheros Communications, Inc.
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.
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.
24 #include "ah_internal.h"
26 #include "ar5211/ar5211.h"
27 #include "ar5211/ar5211reg.h"
28 #include "ar5211/ar5211desc.h"
31 * Notify Power Mgt is enabled in self-generated frames.
32 * If requested, force chip awake.
34 * Returns A_OK if chip is awake or successfully forced awake.
36 * WARNING WARNING WARNING
37 * There is a problem with the chip where sometimes it will not wake up.
40 ar5211SetPowerModeAwake(struct ath_hal *ah, int setChip)
42 #define POWER_UP_TIME 2000
47 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_WAKE);
48 OS_DELAY(10); /* Give chip the chance to awake */
50 for (i = POWER_UP_TIME / 200; i != 0; i--) {
51 val = OS_REG_READ(ah, AR_PCICFG);
52 if ((val & AR_PCICFG_SPWR_DN) == 0)
55 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE,
60 ath_hal_printf(ah, "%s: Failed to wakeup in %ums\n",
61 __func__, POWER_UP_TIME/20);
67 OS_REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
73 * Notify Power Mgt is disabled in self-generated frames.
74 * If requested, force chip to sleep.
77 ar5211SetPowerModeSleep(struct ath_hal *ah, int setChip)
79 OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
81 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_SLP);
85 * Notify Power Management is enabled in self-generating
86 * fames. If request, set power mode of chip to
87 * auto/normal. Duration in units of 128us (1/8 TU).
90 ar5211SetPowerModeNetworkSleep(struct ath_hal *ah, int setChip)
92 OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV);
94 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_NORM);
98 ar5211SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip)
101 static const char* modes[] = {
108 int status = AH_TRUE;
110 HALDEBUG(ah, HAL_DEBUG_POWER, "%s: %s -> %s (%s)\n", __func__,
111 modes[ah->ah_powerMode], modes[mode],
112 setChip ? "set chip " : "");
116 ah->ah_powerMode = mode;
117 status = ar5211SetPowerModeAwake(ah, setChip);
119 case HAL_PM_FULL_SLEEP:
120 ar5211SetPowerModeSleep(ah, setChip);
122 ah->ah_powerMode = mode;
124 case HAL_PM_NETWORK_SLEEP:
125 ar5211SetPowerModeNetworkSleep(ah, setChip);
127 ah->ah_powerMode = mode;
130 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown power mode %u\n",
138 ar5211GetPowerMode(struct ath_hal *ah)
140 /* Just so happens the h/w maps directly to the abstracted value */
141 return MS(OS_REG_READ(ah, AR_SCR), AR_SCR_SLE);