/*
* include/linux/mmc/sdio.h
*
* Copyright 2006-2007 Pierre Ossman
*
* 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_SDIO_H
#define LINUX_MMC_SDIO_H

/* SDIO commands type argument response */
#define SD_IO_SEND_OP_COND 5 /* bcr [23:0] OCR R4 */
#define SD_IO_RW_DIRECT 52 /* ac [31:0] See below R5 */
#define SD_IO_RW_EXTENDED 53 /* adtc [31:0] See below R5 */

/*
* SD_IO_RW_DIRECT argument format:
*
* [31] R/W flag
* [30:28] Function number
* [27] RAW flag
* [25:9] Register address
* [7:0] Data
*/

/*
* SD_IO_RW_EXTENDED argument format:
*
* [31] R/W flag
* [30:28] Function number
* [27] Block mode
* [26] Increment address
* [25:9] Register address
* [8:0] Byte/block count
*/

#define R4_18V_PRESENT (1<<24)
#define R4_MEMORY_PRESENT (1 << 27)

/*
SDIO status in R5
Type
e : error bit
s : status bit
r : detected and set for the actual command response
x : detected and set during command execution. the host must poll
the card by sending status command in order to read these bits.
Clear condition
a : according to the card state
b : always related to the previous command. Reception of
a valid command will clear it (with a delay of one command)
c : clear by read
*/

#define R5_COM_CRC_ERROR (1 << 15) /* er, b */
#define R5_ILLEGAL_COMMAND (1 << 14) /* er, b */
#define R5_ERROR (1 << 11) /* erx, c */
#define R5_FUNCTION_NUMBER (1 << 9) /* er, c */
#define R5_OUT_OF_RANGE (1 << 8) /* er, c */
#define R5_STATUS(x) (x & 0xCB00)
#define R5_IO_CURRENT_STATE(x) ((x & 0x3000) >> 12) /* s, b */

/*
* Card Common Control Registers (CCCR)
*/

#define SDIO_CCCR_CCCR 0x00

#define SDIO_CCCR_REV_1_00 0 /* CCCR/FBR Version 1.00 */
#define SDIO_CCCR_REV_1_10 1 /* CCCR/FBR Version 1.10 */
#define SDIO_CCCR_REV_1_20 2 /* CCCR/FBR Version 1.20 */
#define SDIO_CCCR_REV_3_00 3 /* CCCR/FBR Version 3.00 */

#define SDIO_SDIO_REV_1_00 0 /* SDIO Spec Version 1.00 */
#define SDIO_SDIO_REV_1_10 1 /* SDIO Spec Version 1.10 */
#define SDIO_SDIO_REV_1_20 2 /* SDIO Spec Version 1.20 */
#define SDIO_SDIO_REV_2_00 3 /* SDIO Spec Version 2.00 */
#define SDIO_SDIO_REV_3_00 4 /* SDIO Spec Version 3.00 */

#define SDIO_CCCR_SD 0x01

#define SDIO_SD_REV_1_01 0 /* SD Physical Spec Version 1.01 */
#define SDIO_SD_REV_1_10 1 /* SD Physical Spec Version 1.10 */
#define SDIO_SD_REV_2_00 2 /* SD Physical Spec Version 2.00 */
#define SDIO_SD_REV_3_00 3 /* SD Physical Spev Version 3.00 */

#define SDIO_CCCR_IOEx 0x02
#define SDIO_CCCR_IORx 0x03

#define SDIO_CCCR_IENx 0x04 /* Function/Master Interrupt Enable */
#define SDIO_CCCR_INTx 0x05 /* Function Interrupt Pending */

#define SDIO_CCCR_ABORT 0x06 /* function abort/card reset */

#define SDIO_CCCR_IF 0x07 /* bus interface controls */

#define SDIO_BUS_WIDTH_MASK 0x03 /* data bus width setting */
#define SDIO_BUS_WIDTH_1BIT 0x00
#define SDIO_BUS_WIDTH_RESERVED 0x01
#define SDIO_BUS_WIDTH_4BIT 0x02
#define SDIO_BUS_ECSI 0x20 /* Enable continuous SPI interrupt */
#define SDIO_BUS_SCSI 0x40 /* Support continuous SPI interrupt */

#define SDIO_BUS_ASYNC_INT 0x20

#define SDIO_BUS_CD_DISABLE 0x80 /* disable pull-up on DAT3 (pin 1) */

#define SDIO_CCCR_CAPS 0x08

#define SDIO_CCCR_CAP_SDC 0x01 /* can do CMD52 while data transfer */
#define SDIO_CCCR_CAP_SMB 0x02 /* can do multi-block xfers (CMD53) */
#define SDIO_CCCR_CAP_SRW 0x04 /* supports read-wait protocol */
#define SDIO_CCCR_CAP_SBS 0x08 /* supports suspend/resume */
#define SDIO_CCCR_CAP_S4MI 0x10 /* interrupt during 4-bit CMD53 */
#define SDIO_CCCR_CAP_E4MI 0x20 /* enable ints during 4-bit CMD53 */
#define SDIO_CCCR_CAP_LSC 0x40 /* low speed card */
#define SDIO_CCCR_CAP_4BLS 0x80 /* 4 bit low speed card */

#define SDIO_CCCR_CIS 0x09 /* common CIS pointer (3 bytes) */

/* Following 4 regs are valid only if SBS is set */
#define SDIO_CCCR_SUSPEND 0x0c
#define SDIO_CCCR_SELx 0x0d
#define SDIO_CCCR_EXECx 0x0e
#define SDIO_CCCR_READYx 0x0f

#define SDIO_CCCR_BLKSIZE 0x10

#define SDIO_CCCR_POWER 0x12

#define SDIO_POWER_SMPC 0x01 /* Supports Master Power Control */
#define SDIO_POWER_EMPC 0x02 /* Enable Master Power Control */

#define SDIO_CCCR_SPEED 0x13

#define SDIO_SPEED_SHS 0x01 /* Supports High-Speed mode */
#define SDIO_SPEED_BSS_SHIFT 1
#define SDIO_SPEED_BSS_MASK (7<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR12 (0<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR25 (1<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR50 (2<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_SDR104 (3<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_DDR50 (4<<SDIO_SPEED_BSS_SHIFT)
#define SDIO_SPEED_EHS SDIO_SPEED_SDR25 /* Enable High-Speed */

#define SDIO_CCCR_UHS 0x14
#define SDIO_UHS_SDR50 0x01
#define SDIO_UHS_SDR104 0x02
#define SDIO_UHS_DDR50 0x04

#define SDIO_CCCR_DRIVE_STRENGTH 0x15
#define SDIO_SDTx_MASK 0x07
#define SDIO_DRIVE_SDTA (1<<0)
#define SDIO_DRIVE_SDTC (1<<1)
#define SDIO_DRIVE_SDTD (1<<2)
#define SDIO_DRIVE_DTSx_MASK 0x03
#define SDIO_DRIVE_DTSx_SHIFT 4
#define SDIO_DTSx_SET_TYPE_B (0 << SDIO_DRIVE_DTSx_SHIFT)
#define SDIO_DTSx_SET_TYPE_A (1 << SDIO_DRIVE_DTSx_SHIFT)
#define SDIO_DTSx_SET_TYPE_C (2 << SDIO_DRIVE_DTSx_SHIFT)
#define SDIO_DTSx_SET_TYPE_D (3 << SDIO_DRIVE_DTSx_SHIFT)
/*
* Function Basic Registers (FBR)
*/

#define SDIO_FBR_BASE(f) ((f) * 0x100) /* base of function f's FBRs */

#define SDIO_FBR_STD_IF 0x00

#define SDIO_FBR_SUPPORTS_CSA 0x40 /* supports Code Storage Area */
#define SDIO_FBR_ENABLE_CSA 0x80 /* enable Code Storage Area */

#define SDIO_FBR_STD_IF_EXT 0x01

#define SDIO_FBR_POWER 0x02

#define SDIO_FBR_POWER_SPS 0x01 /* Supports Power Selection */
#define SDIO_FBR_POWER_EPS 0x02 /* Enable (low) Power Selection */

#define SDIO_FBR_CIS 0x09 /* CIS pointer (3 bytes) */


#define SDIO_FBR_CSA 0x0C /* CSA pointer (3 bytes) */

#define SDIO_FBR_CSA_DATA 0x0F

#define SDIO_FBR_BLKSIZE 0x10 /* block size (2 bytes) */

#endif /* LINUX_MMC_SDIO_H */