diff mbox

[v2,2/4] arm: gpmc: Low power transition support

Message ID 1360240618-11094-3-git-send-email-avinashphilip@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

avinash philip Feb. 7, 2013, 12:36 p.m. UTC 
With GPMC converted to platform driver recently, adds low power
transition support in driver itself.

Signed-off-by: Philip Avinash <avinashphilip@ti.com>
---
Changes since v1:
	Module disable & enable added using pm_runtime support.

 arch/arm/mach-omap2/gpmc.c |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
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Patch

diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index b1cd6c1..cc57988 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -1361,9 +1361,29 @@  static __devexit int gpmc_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int gpmc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	omap3_gpmc_save_context();
+	pm_runtime_put_sync(&pdev->dev);
+	return 0;
+}
+
+static int gpmc_resume(struct platform_device *pdev)
+{
+	pm_runtime_get_sync(&pdev->dev);
+	omap3_gpmc_restore_context();
+	return 0;
+}
+#endif
+
 static struct platform_driver gpmc_driver = {
 	.probe		= gpmc_probe,
 	.remove		= __devexit_p(gpmc_remove),
+#ifdef CONFIG_PM
+	.suspend	= gpmc_suspend,
+	.resume		= gpmc_resume,
+#endif
 	.driver		= {
 		.name	= DEVICE_NAME,
 		.owner	= THIS_MODULE,