54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* include/linux/mmc/sdio.h
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*
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* Copyright 2006-2007 Pierre Ossman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#ifndef MMC_SDIO_H
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#define MMC_SDIO_H
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/* SDIO commands type argument response */
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#define SD_IO_SEND_OP_COND 5 /* bcr [23:0] OCR R4 */
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#define SD_IO_RW_DIRECT 52 /* ac [31:0] See below R5 */
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/*
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* SD_IO_RW_DIRECT argument format:
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*
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* [31] R/W flag
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* [30:28] Function number
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* [27] RAW flag
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* [25:9] Register address
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* [7:0] Data
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*/
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/*
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SDIO status in R5
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Type
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e : error bit
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s : status bit
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r : detected and set for the actual command response
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x : detected and set during command execution. the host must poll
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the card by sending status command in order to read these bits.
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Clear condition
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a : according to the card state
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b : always related to the previous command. Reception of
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a valid command will clear it (with a delay of one command)
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c : clear by read
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*/
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#define R5_COM_CRC_ERROR (1 << 15) /* er, b */
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#define R5_ILLEGAL_COMMAND (1 << 14) /* er, b */
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#define R5_ERROR (1 << 11) /* erx, c */
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#define R5_FUNCTION_NUMBER (1 << 9) /* er, c */
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#define R5_OUT_OF_RANGE (1 << 8) /* er, c */
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#define R5_STATUS(x) (x & 0xCB00)
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#define R5_IO_CURRENT_STATE(x) ((x & 0x3000) >> 12) /* s, b */
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#endif
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