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authorLennert Buytenhek <buytenh@wantstofly.org>2006-09-21 23:16:48 +0200
committerDavid Woodhouse <dwmw2@infradead.org>2006-09-22 10:26:56 +0100
commit17c2dae3aaff9b1e5d83996a5f098ad693f3aeca (patch)
treee2d35bb9f404a84761b2641309b22881a4672e7e /drivers/mtd
parent25f0c659fe64832d8ee06aa623fffaad708dcf8b (diff)
downloadop-kernel-dev-17c2dae3aaff9b1e5d83996a5f098ad693f3aeca.zip
op-kernel-dev-17c2dae3aaff9b1e5d83996a5f098ad693f3aeca.tar.gz
[MTD] physmap: add power management support
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>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/maps/physmap.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 7799a25..bc7cc71 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -158,9 +158,42 @@ err_out:
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 = {
.probe = physmap_flash_probe,
.remove = physmap_flash_remove,
+#ifdef CONFIG_PM
+ .suspend = physmap_flash_suspend,
+ .resume = physmap_flash_resume,
+ .shutdown = physmap_flash_shutdown,
+#endif
.driver = {
.name = "physmap-flash",
},
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