From: Dong Aisheng <b29396@freescale.com>
Date: Mon, 13 Jan 2014 08:26:19 +0000 (+0800)
Subject: ENGR00295184-3 mmc: sdhci-esdhc-imx: add keep power feature during suspend
X-Git-Tag: KARO-TX6-2014-07-10~68
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=97d40e5dbd09d530138c8074db024dc9e4a50514;p=karo-tx-linux.git

ENGR00295184-3 mmc: sdhci-esdhc-imx: add keep power feature during suspend

IMX boards can keep power for cards during suspend.
User can enable it from device tree.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
---

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 73c26ecbff5e..94139fdbb36d 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -937,6 +937,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
 			 struct esdhc_platform_data *boarddata)
 {
 	struct device_node *np = pdev->dev.of_node;
+	struct sdhci_host *host = platform_get_drvdata(pdev);
 
 	if (!np)
 		return -ENODEV;
@@ -970,6 +971,9 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
 	if (of_property_read_u32(np, "fsl,delay-line", &boarddata->delay_line))
 		boarddata->delay_line = 0;
 
+	if (of_find_property(np, "keep-power-in-suspend", NULL))
+		host->mmc->pm_caps |= MMC_PM_KEEP_POWER;
+
 	return 0;
 }
 #else