Patchwork [3/3] sata_mv: add power management support for the platform driver

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Submitter Saeed Bishara
Date June 23, 2009, 3:43 p.m.
Message ID <1245771838-1332-3-git-send-email-saeed@marvell.com>
Download mbox | patch
Permalink /patch/29082/
State Not Applicable
Delegated to: David Miller
Headers show

Comments

Saeed Bishara - June 23, 2009, 3:43 p.m.
Signed-off-by: Saeed Bishara <saeed@marvell.com>
---
 drivers/ata/sata_mv.c |   42 ++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 42 insertions(+), 0 deletions(-)

Patch

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index ca9157d..6723a9a 100755
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -4087,9 +4087,51 @@  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);
+	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,