[PATCH v2 4/4] mtd: nand: omap2: Low power transition support

Philip Avinash
2013-02-07T12:36:58Z

Add support for Low power transition support in nand driver. Also
ensures the current transaction finishes before going to low power mode
with _suspend support in mtd layer.

Signed-off-by: Philip Avinash <avinashphilip@ti.com>
---
drivers/mtd/nand/omap2.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 8e820dd..790215b 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -2103,9 +2103,28 @@ static int omap_nand_remove(struct platform_device *pdev)
return 0;
}

+#ifdef CONFIG_PM
+static int omap_nand_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct mtd_info *mtd = platform_get_drvdata(pdev);
+
+ mtd->_suspend(mtd);
+ return 0;
+}
+
+static int omap_nand_resume(struct platform_device *pdev)
+{
+ return 0;
+}
+#endif
+
static struct platform_driver omap_nand_driver = {
.probe = omap_nand_probe,
.remove = omap_nand_remove,
+#ifdef CONFIG_PM
+ .suspend = omap_nand_suspend,
+ .resume = omap_nand_resume,
+#endif
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
--
1.7.9.5