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: ar5312_power.c,v 1.1.1.1 2008/12/11 04:46:45 alc Exp $
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
ar5312SetPowerModeAwake(struct ath_hal * ah,int setChip)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
ar5312SetPowerModeSleep(struct ath_hal * ah,int setChip)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
ar5312SetPowerModeNetworkSleep(struct ath_hal * ah,int setChip)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
ar5312SetPowerMode(struct ath_hal * ah,HAL_POWER_MODE mode,int setChip)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
ar5312GetPowerMode(struct ath_hal * ah)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
ar5312GetPowerStatus(struct ath_hal * ah)121 ar5312GetPowerStatus(struct ath_hal *ah)
122 {
123 return 0; /* Currently, 5312 is never in sleep mode. */
124 }
125 #endif /* AH_SUPPORT_AR5312 */
126