These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / net / wireless / ath / wil6210 / pm.c

diff --git a/kernel/drivers/net/wireless/ath/wil6210/pm.c b/kernel/drivers/net/wireless/ath/wil6210/pm.c
new file mode 100644 (file)
index 0000000..0b7ecbc
--- /dev/null
+++ b/kernel/drivers/net/wireless/ath/wil6210/pm.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2014 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "wil6210.h"
+
+int wil_can_suspend(struct wil6210_priv *wil, bool is_runtime)
+{
+       int rc = 0;
+       struct wireless_dev *wdev = wil->wdev;
+
+       wil_dbg_pm(wil, "%s(%s)\n", __func__,
+                  is_runtime ? "runtime" : "system");
+
+       switch (wdev->iftype) {
+       case NL80211_IFTYPE_MONITOR:
+       case NL80211_IFTYPE_STATION:
+       case NL80211_IFTYPE_P2P_CLIENT:
+               break;
+       /* AP-like interface - can't suspend */
+       default:
+               wil_dbg_pm(wil, "AP-like interface\n");
+               rc = -EBUSY;
+               break;
+       }
+
+       wil_dbg_pm(wil, "%s(%s) => %s (%d)\n", __func__,
+                  is_runtime ? "runtime" : "system", rc ? "No" : "Yes", rc);
+
+       return rc;
+}
+
+int wil_suspend(struct wil6210_priv *wil, bool is_runtime)
+{
+       int rc = 0;
+       struct net_device *ndev = wil_to_ndev(wil);
+
+       wil_dbg_pm(wil, "%s(%s)\n", __func__,
+                  is_runtime ? "runtime" : "system");
+
+       /* if netif up, hardware is alive, shut it down */
+       if (ndev->flags & IFF_UP) {
+               rc = wil_down(wil);
+               if (rc) {
+                       wil_err(wil, "wil_down : %d\n", rc);
+                       goto out;
+               }
+       }
+
+       if (wil->platform_ops.suspend)
+               rc = wil->platform_ops.suspend(wil->platform_handle);
+
+out:
+       wil_dbg_pm(wil, "%s(%s) => %d\n", __func__,
+                  is_runtime ? "runtime" : "system", rc);
+       return rc;
+}
+
+int wil_resume(struct wil6210_priv *wil, bool is_runtime)
+{
+       int rc = 0;
+       struct net_device *ndev = wil_to_ndev(wil);
+
+       wil_dbg_pm(wil, "%s(%s)\n", __func__,
+                  is_runtime ? "runtime" : "system");
+
+       if (wil->platform_ops.resume) {
+               rc = wil->platform_ops.resume(wil->platform_handle);
+               if (rc) {
+                       wil_err(wil, "platform_ops.resume : %d\n", rc);
+                       goto out;
+               }
+       }
+
+       /* if netif up, bring hardware up
+        * During open(), IFF_UP set after actual device method
+        * invocation. This prevent recursive call to wil_up()
+        */
+       if (ndev->flags & IFF_UP)
+               rc = wil_up(wil);
+
+out:
+       wil_dbg_pm(wil, "%s(%s) => %d\n", __func__,
+                  is_runtime ? "runtime" : "system", rc);
+       return rc;
+}