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[S390] pm: lcs driver power management callbacks

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Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Klaus-Dieter Wacket 2009-06-16 10:30:30 +02:00 committed by Martin Schwidefsky
parent 77812a2757
commit cbb2aec3e7
1 changed files with 65 additions and 9 deletions
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74
drivers/s390/net/lcs.c
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@ -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,
};
/**