Vladimir Kondratiev | 93cb679 | 2015-07-30 13:52:05 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014 Qualcomm Atheros, Inc. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include "wil6210.h" |
| 18 | |
| 19 | int wil_can_suspend(struct wil6210_priv *wil, bool is_runtime) |
| 20 | { |
| 21 | int rc = 0; |
| 22 | struct wireless_dev *wdev = wil->wdev; |
| 23 | |
| 24 | wil_dbg_pm(wil, "%s(%s)\n", __func__, |
| 25 | is_runtime ? "runtime" : "system"); |
| 26 | |
| 27 | switch (wdev->iftype) { |
| 28 | case NL80211_IFTYPE_MONITOR: |
| 29 | case NL80211_IFTYPE_STATION: |
| 30 | case NL80211_IFTYPE_P2P_CLIENT: |
| 31 | break; |
| 32 | /* AP-like interface - can't suspend */ |
| 33 | default: |
| 34 | wil_dbg_pm(wil, "AP-like interface\n"); |
| 35 | rc = -EBUSY; |
| 36 | break; |
| 37 | } |
| 38 | |
| 39 | wil_dbg_pm(wil, "%s(%s) => %s (%d)\n", __func__, |
| 40 | is_runtime ? "runtime" : "system", rc ? "No" : "Yes", rc); |
| 41 | |
| 42 | return rc; |
| 43 | } |
| 44 | |
| 45 | int wil_suspend(struct wil6210_priv *wil, bool is_runtime) |
| 46 | { |
| 47 | int rc = 0; |
| 48 | struct net_device *ndev = wil_to_ndev(wil); |
| 49 | |
| 50 | wil_dbg_pm(wil, "%s(%s)\n", __func__, |
| 51 | is_runtime ? "runtime" : "system"); |
| 52 | |
| 53 | /* if netif up, hardware is alive, shut it down */ |
| 54 | if (ndev->flags & IFF_UP) { |
| 55 | rc = wil_down(wil); |
| 56 | if (rc) { |
| 57 | wil_err(wil, "wil_down : %d\n", rc); |
| 58 | goto out; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | if (wil->platform_ops.suspend) |
| 63 | rc = wil->platform_ops.suspend(wil->platform_handle); |
| 64 | |
| 65 | out: |
| 66 | wil_dbg_pm(wil, "%s(%s) => %d\n", __func__, |
| 67 | is_runtime ? "runtime" : "system", rc); |
| 68 | return rc; |
| 69 | } |
| 70 | |
| 71 | int wil_resume(struct wil6210_priv *wil, bool is_runtime) |
| 72 | { |
| 73 | int rc = 0; |
| 74 | struct net_device *ndev = wil_to_ndev(wil); |
| 75 | |
| 76 | wil_dbg_pm(wil, "%s(%s)\n", __func__, |
| 77 | is_runtime ? "runtime" : "system"); |
| 78 | |
| 79 | if (wil->platform_ops.resume) { |
| 80 | rc = wil->platform_ops.resume(wil->platform_handle); |
| 81 | if (rc) { |
| 82 | wil_err(wil, "platform_ops.resume : %d\n", rc); |
| 83 | goto out; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /* if netif up, bring hardware up |
| 88 | * During open(), IFF_UP set after actual device method |
| 89 | * invocation. This prevent recursive call to wil_up() |
| 90 | */ |
| 91 | if (ndev->flags & IFF_UP) |
| 92 | rc = wil_up(wil); |
| 93 | |
| 94 | out: |
| 95 | wil_dbg_pm(wil, "%s(%s) => %d\n", __func__, |
| 96 | is_runtime ? "runtime" : "system", rc); |
| 97 | return rc; |
| 98 | } |