From 17c2dae3aaff9b1e5d83996a5f098ad693f3aeca Mon Sep 17 00:00:00 2001
From: Lennert Buytenhek <buytenh@wantstofly.org>
Date: Thu, 21 Sep 2006 23:16:48 +0200
Subject: [PATCH] [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>
---
drivers/mtd/maps/physmap.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 7799a25a7f2ae..bc7cc71788bc2 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -158,9 +158,42 @@ static int physmap_flash_probe(struct platform_device *dev)
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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