pata_mpc52xx: suspend/resume support

Implement suspend and resume routines for mpc52xx ata driver.
Tested on Lite5200b with deep-sleep and low-power (not yet in-tree)
modes.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 16 insertions, 2 deletions

diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c
index 368fac7d168b..182e83c9047b 100644
--- a/drivers/ata/pata_mpc52xx.c
+++ b/drivers/ata/pata_mpc52xx.c
@@ -467,13 +467,27 @@ mpc52xx_ata_remove(struct of_device *op)
 static int
 mpc52xx_ata_suspend(struct of_device *op, pm_message_t state)
 {
-        return 0;       /* FIXME : What to do here ? */
+        struct ata_host *host = dev_get_drvdata(&op->dev);
+
+        return ata_host_suspend(host, state);
 }
 
 static int
 mpc52xx_ata_resume(struct of_device *op)
 {
-        return 0;       /* FIXME : What to do here ? */
+        struct ata_host *host = dev_get_drvdata(&op->dev);
+        struct mpc52xx_ata_priv *priv = host->private_data;
+        int rv;
+
+        rv = mpc52xx_ata_hw_init(priv);
+        if (rv) {
+                printk(KERN_ERR DRV_NAME ": Error during HW init\n");
+                return rv;
+        }
+
+        ata_host_resume(host);
+
+        return 0;
 }
 
 #endif