mmc: sdhci-pltfm: add suspend/resume functions

This patch adds the suspend and resume functions
in the sdhci-pltfm device driver.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index e045e3c61dde..4f126de5f492 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -165,6 +165,25 @@ static const struct platform_device_id sdhci_pltfm_ids[] = {
 };
 MODULE_DEVICE_TABLE(platform, sdhci_pltfm_ids);
 
+#ifdef CONFIG_PM
+static int sdhci_pltfm_suspend(struct platform_device *dev, pm_message_t state)
+{
+        struct sdhci_host *host = platform_get_drvdata(dev);
+
+        return sdhci_suspend_host(host, state);
+}
+
+static int sdhci_pltfm_resume(struct platform_device *dev)
+{
+        struct sdhci_host *host = platform_get_drvdata(dev);
+
+        return sdhci_resume_host(host);
+}
+#else
+#define sdhci_pltfm_suspend     NULL
+#define sdhci_pltfm_resume      NULL
+#endif  /* CONFIG_PM */
+
 static struct platform_driver sdhci_pltfm_driver = {
         .driver = {
                 .name   = "sdhci",
@@ -173,6 +192,8 @@ static struct platform_driver sdhci_pltfm_driver = {
         .probe          = sdhci_pltfm_probe,
         .remove         = __devexit_p(sdhci_pltfm_remove),
         .id_table       = sdhci_pltfm_ids,
+        .suspend        = sdhci_pltfm_suspend,
+        .resume         = sdhci_pltfm_resume,
 };
 
 /*****************************************************************************\