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>

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
old mode 100644 (file)
new mode 100755 (executable)
index b625b36..0f7704c
--- 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,