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[MTD] physmap: add power management support

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Implement PM handling for physmap.  Idea from Steven Scholz, patch
by David Anders.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Lennert Buytenhek 2006-09-21 23:16:48 +02:00 committed by David Woodhouse
parent 25f0c659fe
commit 17c2dae3aa
1 changed files with 33 additions and 0 deletions
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33
drivers/mtd/maps/physmap.c
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@ -158,9 +158,42 @@ static int physmap_flash_probe(struct platform_device *dev)
return err; return err;
} }
#ifdef CONFIG_PM
static int physmap_flash_suspend(struct platform_device *dev, pm_message_t state)
{
struct physmap_flash_info *info = platform_get_drvdata(dev);
int ret = 0;
if (info)
ret = info->mtd->suspend(info->mtd);
return ret;
}
static int physmap_flash_resume(struct platform_device *dev)
{
struct physmap_flash_info *info = platform_get_drvdata(dev);
if (info)
info->mtd->resume(info->mtd);
return 0;
}
static void physmap_flash_shutdown(struct platform_device *dev)
{
struct physmap_flash_info *info = platform_get_drvdata(dev);
if (info && info->mtd->suspend(info->mtd) == 0)
info->mtd->resume(info->mtd);
}
#endif
static struct platform_driver physmap_flash_driver = { static struct platform_driver physmap_flash_driver = {
.probe = physmap_flash_probe, .probe = physmap_flash_probe,
.remove = physmap_flash_remove, .remove = physmap_flash_remove,
#ifdef CONFIG_PM
.suspend = physmap_flash_suspend,
.resume = physmap_flash_resume,
.shutdown = physmap_flash_shutdown,
#endif
.driver = { .driver = {
.name = "physmap-flash", .name = "physmap-flash",
}, },