/*
*  include/linux/mmc/sd.h
*
*  Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
*  Copyright (C) 2018 CTCaer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*/

#ifndef LINUX_MMC_SD_H
#define LINUX_MMC_SD_H

/* SD commands                           type  argument     response */
/* class 0 */
/* This is basically the same command as for MMC with some quirks. */
#define SD_SEND_RELATIVE_ADDR     3   /* bcr                     R6  */
#define SD_SEND_IF_COND           8   /* bcr  [11:0] See below   R7  */
#define SD_SWITCH_VOLTAGE         11  /* ac                      R1  */

/* class 10 */
#define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */

/* class 5 */
#define SD_ERASE_WR_BLK_START    32   /* ac   [31:0] data addr   R1  */
#define SD_ERASE_WR_BLK_END      33   /* ac   [31:0] data addr   R1  */

/* Application commands */
#define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
#define SD_APP_SD_STATUS         13   /* adtc                    R1  */
#define SD_APP_SEND_NUM_WR_BLKS  22   /* adtc                    R1  */
#define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */
#define SD_APP_SET_CLR_CARD_DETECT 42
#define SD_APP_SEND_SCR          51   /* adtc                    R1  */

/* OCR bit definitions */
#define SD_OCR_S18R         (1 << 24)    /* 1.8V switching request */
#define SD_ROCR_S18A        SD_OCR_S18R  /* 1.8V switching accepted by card */
#define SD_OCR_XPC          (1 << 28)    /* SDXC power control */
#define SD_OCR_CCS          (1 << 30)    /* Card Capacity Status */
#define SD_OCR_VDD_32_33    (1 << 20)	 /* VDD voltage 3.2 ~ 3.3 */

/*
* SD_SWITCH argument format:
*
*      [31] Check (0) or switch (1)
*      [30:24] Reserved (0)
*      [23:20] Function group 6
*      [19:16] Function group 5
*      [15:12] Function group 4
*      [11:8] Function group 3
*      [7:4] Function group 2
*      [3:0] Function group 1
*/

/*
* SD_SEND_IF_COND argument format:
*
*	[31:12] Reserved (0)
*	[11:8] Host Voltage Supply Flags
*	[7:0] Check Pattern (0xAA)
*/

/*
* SCR field definitions
*/
#define SCR_SPEC_VER_0		0	/* Implements system specification 1.0 - 1.01 */
#define SCR_SPEC_VER_1		1	/* Implements system specification 1.10 */
#define SCR_SPEC_VER_2		2	/* Implements system specification 2.00-3.0X */
#define SD_SCR_BUS_WIDTH_1	(1<<0)
#define SD_SCR_BUS_WIDTH_4	(1<<2)

/*
* SD bus widths
*/
#define SD_BUS_WIDTH_1		0
#define SD_BUS_WIDTH_4		2

/*
* SD bus speeds
*/
#define UHS_SDR12_BUS_SPEED		0
#define HIGH_SPEED_BUS_SPEED	1
#define UHS_SDR25_BUS_SPEED		1
#define UHS_SDR50_BUS_SPEED		2
#define UHS_SDR104_BUS_SPEED	3
#define UHS_DDR50_BUS_SPEED		4
#define HS400_BUS_SPEED 		5

#define SD_MODE_HIGH_SPEED	(1 << HIGH_SPEED_BUS_SPEED)
#define SD_MODE_UHS_SDR12	(1 << UHS_SDR12_BUS_SPEED)
#define SD_MODE_UHS_SDR25	(1 << UHS_SDR25_BUS_SPEED)
#define SD_MODE_UHS_SDR50	(1 << UHS_SDR50_BUS_SPEED)
#define SD_MODE_UHS_SDR104	(1 << UHS_SDR104_BUS_SPEED)
#define SD_MODE_UHS_DDR50	(1 << UHS_DDR50_BUS_SPEED)

#define SD_DRIVER_TYPE_B	0x01
#define SD_DRIVER_TYPE_A	0x02

#define SD_SET_CURRENT_LIMIT_200	0
#define SD_SET_CURRENT_LIMIT_400	1
#define SD_SET_CURRENT_LIMIT_600	2
#define SD_SET_CURRENT_LIMIT_800	3

/*
* SD_SWITCH mode
*/
#define SD_SWITCH_CHECK		0
#define SD_SWITCH_SET		1

/*
* SD_SWITCH function groups
*/
#define SD_SWITCH_GRP_ACCESS	0

/*
* SD_SWITCH access modes
*/
#define SD_SWITCH_ACCESS_DEF	0
#define SD_SWITCH_ACCESS_HS		1

#endif /* LINUX_MMC_SD_H */