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/*
* 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
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