/*
 *  ffu.h
 *
 * Copyright (C) 2015 Google, 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.
 *
 * This program was created by SanDisk Corp
 */

#ifndef _FFU_H_
#define _FFU_H_

#include <linux/mmc/card.h>

/*
 * eMMC5.0 Field Firmware Update (FFU) opcodes
*/
#define MMC_FFU_INVOKE_OP 302

#define MMC_FFU_MODE_SET 0x1
#define MMC_FFU_MODE_NORMAL 0x0
#define MMC_FFU_INSTALL_SET 0x2

#define FFU_NAME_LEN 80  /* Name of the firmware file udev should find */

enum mmc_ffu_hack_type {
	MMC_OVERRIDE_FFU_ARG = 0,
	MMC_HACK_LEN,
};

struct mmc_ffu_hack {
	enum mmc_ffu_hack_type type;
	u64 value;
};

struct mmc_ffu_args {
	char name[FFU_NAME_LEN];
	u32 ack_nb;
	struct mmc_ffu_hack hack[0];
};

#ifdef CONFIG_MMC_FFU
#define MMC_FFU_FEATURES 0x1
#define FFU_FEATURES(ffu_features) (ffu_features & MMC_FFU_FEATURES)

int mmc_ffu_invoke(struct mmc_card *card, const struct mmc_ffu_args *args);

#else
static inline int mmc_ffu_invoke(struct mmc_card *card,
		const struct mmc_ffu_args *args)
{
	return -ENOSYS;
}
#endif
#endif /* _FFU_H_ */