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 * $FreeBSD$
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 */
39static HAL_BOOL
40ar5312SetPowerModeAwake(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 */
50static void
51ar5312SetPowerModeSleep(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 */
61static void
62ar5312SetPowerModeNetworkSleep(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 */
71HAL_BOOL
72ar5312SetPowerMode(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 */
110uint32_t
111ar5312GetPowerMode(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 */
120HAL_BOOL
121ar5312GetPowerStatus(struct ath_hal *ah)
122{
123        return 0;		/* Currently, 5312 is never in sleep mode. */
124}
125#endif /* AH_SUPPORT_AR5312 */
126