sata_mv: add power management support for the platform driver

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index b625b3614989..0f7704c0b4cc 100644..100755
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -4112,9 +4112,52 @@ static int __devexit mv_platform_remove(struct platform_device *pdev)
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int mv_platform_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        struct ata_host *host = dev_get_drvdata(&pdev->dev);
+        if (host)
+                return ata_host_suspend(host, state);
+        else
+                return 0;
+}
+
+static int mv_platform_resume(struct platform_device *pdev)
+{
+        struct ata_host *host = dev_get_drvdata(&pdev->dev);
+        int ret;
+
+        if (host) {
+                struct mv_host_priv *hpriv = host->private_data;
+                const struct mv_sata_platform_data *mv_platform_data = \
+                        pdev->dev.platform_data;
+                /*
+                 * (Re-)program MBUS remapping windows if we are asked to.
+                 */
+                if (mv_platform_data->dram != NULL)
+                        mv_conf_mbus_windows(hpriv, mv_platform_data->dram);
+
+                /* initialize adapter */
+                ret = mv_init_host(host, chip_soc);
+                if (ret) {
+                        printk(KERN_ERR DRV_NAME ": Error during HW init\n");
+                        return ret;
+                }
+                ata_host_resume(host);
+        }
+
+        return 0;
+}
+#else
+#define mv_platform_suspend NULL
+#define mv_platform_resume NULL
+#endif
+
 static struct platform_driver mv_platform_driver = {
         .probe                  = mv_platform_probe,
         .remove                 = __devexit_p(mv_platform_remove),
+        .suspend                = mv_platform_suspend,
+        .resume                 = mv_platform_resume,
         .driver                 = {
                                    .name = DRV_NAME,
                                    .owner = THIS_MODULE,