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https://github.com/edk2-porting/linux-next.git
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e34dc6475a
Adding pm_notify to allow the following: 1. Check if suspend is allowed in an earlier stage to prevent starting the suspend procedure in case it is not allowed 2. Notify the platform driver on the suspend request Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
/*
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* Copyright (c) 2014,2016 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "wil6210.h"
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int wil_can_suspend(struct wil6210_priv *wil, bool is_runtime)
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{
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int rc = 0;
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struct wireless_dev *wdev = wil->wdev;
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wil_dbg_pm(wil, "%s(%s)\n", __func__,
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is_runtime ? "runtime" : "system");
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if (!netif_running(wil_to_ndev(wil))) {
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/* can always sleep when down */
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wil_dbg_pm(wil, "Interface is down\n");
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goto out;
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}
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if (test_bit(wil_status_resetting, wil->status)) {
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wil_dbg_pm(wil, "Delay suspend when resetting\n");
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rc = -EBUSY;
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goto out;
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}
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if (wil->recovery_state != fw_recovery_idle) {
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wil_dbg_pm(wil, "Delay suspend during recovery\n");
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rc = -EBUSY;
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goto out;
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}
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/* interface is running */
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switch (wdev->iftype) {
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case NL80211_IFTYPE_MONITOR:
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case NL80211_IFTYPE_STATION:
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case NL80211_IFTYPE_P2P_CLIENT:
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if (test_bit(wil_status_fwconnecting, wil->status)) {
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wil_dbg_pm(wil, "Delay suspend when connecting\n");
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rc = -EBUSY;
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goto out;
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}
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break;
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/* AP-like interface - can't suspend */
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default:
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wil_dbg_pm(wil, "AP-like interface\n");
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rc = -EBUSY;
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break;
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}
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out:
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wil_dbg_pm(wil, "%s(%s) => %s (%d)\n", __func__,
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is_runtime ? "runtime" : "system", rc ? "No" : "Yes", rc);
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return rc;
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}
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int wil_suspend(struct wil6210_priv *wil, bool is_runtime)
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{
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int rc = 0;
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struct net_device *ndev = wil_to_ndev(wil);
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wil_dbg_pm(wil, "%s(%s)\n", __func__,
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is_runtime ? "runtime" : "system");
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/* if netif up, hardware is alive, shut it down */
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if (ndev->flags & IFF_UP) {
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rc = wil_down(wil);
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if (rc) {
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wil_err(wil, "wil_down : %d\n", rc);
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goto out;
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}
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}
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if (wil->platform_ops.suspend)
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rc = wil->platform_ops.suspend(wil->platform_handle);
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out:
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wil_dbg_pm(wil, "%s(%s) => %d\n", __func__,
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is_runtime ? "runtime" : "system", rc);
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return rc;
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}
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int wil_resume(struct wil6210_priv *wil, bool is_runtime)
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{
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int rc = 0;
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struct net_device *ndev = wil_to_ndev(wil);
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wil_dbg_pm(wil, "%s(%s)\n", __func__,
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is_runtime ? "runtime" : "system");
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if (wil->platform_ops.resume) {
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rc = wil->platform_ops.resume(wil->platform_handle);
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if (rc) {
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wil_err(wil, "platform_ops.resume : %d\n", rc);
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goto out;
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}
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}
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/* if netif up, bring hardware up
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* During open(), IFF_UP set after actual device method
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* invocation. This prevent recursive call to wil_up()
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*/
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if (ndev->flags & IFF_UP)
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rc = wil_up(wil);
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out:
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wil_dbg_pm(wil, "%s(%s) => %d\n", __func__,
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is_runtime ? "runtime" : "system", rc);
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return rc;
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}
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