mtd: nand: atmel: Add PM ops

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Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=6e532afaca8ed41107fa0a551d7b2db99a869540
Commit:     6e532afaca8ed41107fa0a551d7b2db99a869540
Parent:     f9ce2eddf1769a2cf93e87332c55063537e69119
Author:     Boris Brezillon <boris.brezillon at free-electrons.com>
AuthorDate: Thu Mar 16 09:36:00 2017 +0100
Committer:  Boris Brezillon <boris.brezillon at free-electrons.com>
CommitDate: Thu Jun 1 10:09:29 2017 +0200

    mtd: nand: atmel: Add PM ops
    
    Provide a ->resume() hook to make sure the NAND timings are correctly
    restored by resetting all chips connected to the controller.
    
    Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
---
 drivers/mtd/nand/atmel/nand-controller.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/mtd/nand/atmel/nand-controller.c b/drivers/mtd/nand/atmel/nand-controller.c
index ee32909..846c555 100644
--- a/drivers/mtd/nand/atmel/nand-controller.c
+++ b/drivers/mtd/nand/atmel/nand-controller.c
@@ -2506,6 +2506,24 @@ static int atmel_nand_controller_remove(struct platform_device *pdev)
 	return nc->caps->ops->remove(nc);
 }
 
+static int atmel_nand_controller_resume(struct device *dev)
+{
+	struct atmel_nand_controller *nc = dev_get_drvdata(dev);
+	struct atmel_nand *nand;
+
+	list_for_each_entry(nand, &nc->chips, node) {
+		int i;
+
+		for (i = 0; i < nand->numcs; i++)
+			nand_reset(&nand->base, i);
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(atmel_nand_controller_pm_ops, NULL,
+			 atmel_nand_controller_resume);
+
 static struct platform_driver atmel_nand_controller_driver = {
 	.driver = {
 		.name = "atmel-nand-controller",