2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
3 * Copyright (c) 2002-2004 Atheros Communications, Inc.
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.
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.
17 * $Id: ar5210_power.c,v 1.4 2008/11/10 04:08:02 sam Exp $
23 #include "ah_internal.h"
25 #include "ar5210/ar5210.h"
26 #include "ar5210/ar5210reg.h"
29 * Notify Power Mgt is disabled in self-generated frames.
30 * If requested, set Power Mode of chip to auto/normal.
33 ar5210SetPowerModeAuto(struct ath_hal *ah, int setChip)
35 OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV);
37 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_ALLOW);
41 * Notify Power Mgt is enabled in self-generated frames.
42 * If requested, force chip awake.
44 * Returns A_OK if chip is awake or successfully forced awake.
46 * WARNING WARNING WARNING
47 * There is a problem with the chip where sometimes it will not wake up.
50 ar5210SetPowerModeAwake(struct ath_hal *ah, int setChip)
52 #define POWER_UP_TIME 2000
57 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_WAKE);
58 OS_DELAY(2000); /* Give chip the chance to awake */
60 for (i = POWER_UP_TIME / 200; i != 0; i--) {
61 val = OS_REG_READ(ah, AR_PCICFG);
62 if ((val & AR_PCICFG_SPWR_DN) == 0)
65 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE,
70 ath_hal_printf(ah, "%s: Failed to wakeup in %ums\n",
71 __func__, POWER_UP_TIME/20);
77 OS_REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV);
83 * Notify Power Mgt is disabled in self-generated frames.
84 * If requested, force chip to sleep.
87 ar5210SetPowerModeSleep(struct ath_hal *ah, int setChip)
89 OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SV);
91 OS_REG_RMW_FIELD(ah, AR_SCR, AR_SCR_SLE, AR_SCR_SLE_SLP);
95 ar5210SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode, int setChip)
97 struct ath_hal_5210 *ahp = AH5210(ah);
99 static const char* modes[] = {
106 int status = AH_TRUE;
108 HALDEBUG(ah, HAL_DEBUG_POWER, "%s: %s -> %s (%s)\n", __func__,
109 modes[ahp->ah_powerMode], modes[mode],
110 setChip ? "set chip " : "");
113 status = ar5210SetPowerModeAwake(ah, setChip);
115 case HAL_PM_FULL_SLEEP:
116 ar5210SetPowerModeSleep(ah, setChip);
118 case HAL_PM_NETWORK_SLEEP:
119 ar5210SetPowerModeAuto(ah, setChip);
122 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown power mode %u\n",
126 ahp->ah_powerMode = mode;
131 ar5210GetPowerMode(struct ath_hal *ah)
133 /* Just so happens the h/w maps directly to the abstracted value */
134 return MS(OS_REG_READ(ah, AR_SCR), AR_SCR_SLE);