[S390] pm: lcs driver power management callbacks

Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 65 insertions, 9 deletions

diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index a45bc24eb5f9..07a25c3f94b6 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -1,15 +1,12 @@
 /*
- *  linux/drivers/s390/net/lcs.c
- *
  *  Linux for S/390 Lan Channel Station Network Driver
  *
- *  Copyright (C)  1999-2001 IBM Deutschland Entwicklung GmbH,
- *                           IBM Corporation
- *    Author(s): Original Code written by
- *                        DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
- *               Rewritten by
- *                        Frank Pavlic (fpavlic@de.ibm.com) and
- *                        Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *  Copyright IBM Corp. 1999, 2009
+ *  Author(s): Original Code written by
+ *                      DJ Barrow <djbarrow@de.ibm.com,barrow_dj@yahoo.com>
+ *             Rewritten by
+ *                      Frank Pavlic <fpavlic@de.ibm.com> and
+ *                      Martin Schwidefsky <schwidefsky@de.ibm.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -2313,6 +2310,60 @@ lcs_remove_device(struct ccwgroup_device *ccwgdev)
         put_device(&ccwgdev->dev);
 }
 
+static int lcs_pm_suspend(struct lcs_card *card)
+{
+        if (card->dev)
+                netif_device_detach(card->dev);
+        lcs_set_allowed_threads(card, 0);
+        lcs_wait_for_threads(card, 0xffffffff);
+        if (card->state != DEV_STATE_DOWN)
+                __lcs_shutdown_device(card->gdev, 1);
+        return 0;
+}
+
+static int lcs_pm_resume(struct lcs_card *card)
+{
+        int rc = 0;
+
+        if (card->state == DEV_STATE_RECOVER)
+                rc = lcs_new_device(card->gdev);
+        if (card->dev)
+                netif_device_attach(card->dev);
+        if (rc) {
+                dev_warn(&card->gdev->dev, "The lcs device driver "
+                        "failed to recover the device\n");
+        }
+        return rc;
+}
+
+static int lcs_prepare(struct ccwgroup_device *gdev)
+{
+        return 0;
+}
+
+static void lcs_complete(struct ccwgroup_device *gdev)
+{
+        return;
+}
+
+static int lcs_freeze(struct ccwgroup_device *gdev)
+{
+        struct lcs_card *card = dev_get_drvdata(&gdev->dev);
+        return lcs_pm_suspend(card);
+}
+
+static int lcs_thaw(struct ccwgroup_device *gdev)
+{
+        struct lcs_card *card = dev_get_drvdata(&gdev->dev);
+        return lcs_pm_resume(card);
+}
+
+static int lcs_restore(struct ccwgroup_device *gdev)
+{
+        struct lcs_card *card = dev_get_drvdata(&gdev->dev);
+        return lcs_pm_resume(card);
+}
+
 /**
  * LCS ccwgroup driver registration
  */
@@ -2325,6 +2376,11 @@ static struct ccwgroup_driver lcs_group_driver = {
         .remove      = lcs_remove_device,
         .set_online  = lcs_new_device,
         .set_offline = lcs_shutdown_device,
+        .prepare     = lcs_prepare,
+        .complete    = lcs_complete,
+        .freeze      = lcs_freeze,
+        .thaw        = lcs_thaw,
+        .restore     = lcs_restore,
 };
 
 /**