1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/mmc/card/sdio_card.c b/drivers/mmc/card/sdio_card.c
new file mode 100644
index 00000000..fb0ebed4
--- /dev/null
+++ b/drivers/mmc/card/sdio_card.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/sd.h>
+#include <linux/mmc/mmc.h>
+#include <linux/pm_runtime.h>
+
+#ifdef CONFIG_PM_RUNTIME
+
+#define DRV_NAME "sprd-sdio-card"
+
+static int sprd_sdio_card_probe(struct mmc_card *card) {
+    struct mmc_host *host = card->host;
+    if (mmc_card_sdio(card)) {
+        if(host->caps & MMC_CAP_POWER_OFF_CARD) {
+            pm_runtime_no_callbacks(&card->dev); // avoid default sdio bus runtime calling
+            return 0;
+        }
+    }
+    return -EINVAL;
+}
+
+static void sprd_sdio_card_remove(struct mmc_card *card) {
+}
+
+static struct mmc_driver sprd_sdio_card_driver = {
+    .drv.name  = DRV_NAME,
+    .probe         = sprd_sdio_card_probe,
+    .remove      = sprd_sdio_card_remove,
+};
+
+static int __init sprd_sdio_card_init(void) {
+    return mmc_register_driver(&sprd_sdio_card_driver);
+}
+
+static void __exit sprd_sdio_card_exit(void) {
+    mmc_unregister_driver(&sprd_sdio_card_driver);
+}
+
+subsys_initcall(sprd_sdio_card_init);
+module_exit(sprd_sdio_card_exit);
+
+#endif