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Like many other buses, the devices (functions) on the SDIO bus must be enabled before they can be used. Add functions that allow drivers to do so. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
146 lines
4.4 KiB
C
146 lines
4.4 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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/*
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* Card Common Control Registers (CCCR)
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*/
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#define SDIO_CCCR_CCCR 0x00
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#define SDIO_CCCR_REV_1_00 0 /* CCCR/FBR Version 1.00 */
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#define SDIO_CCCR_REV_1_10 1 /* CCCR/FBR Version 1.10 */
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#define SDIO_CCCR_REV_1_20 2 /* CCCR/FBR Version 1.20 */
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#define SDIO_SDIO_REV_1_00 0 /* SDIO Spec Version 1.00 */
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#define SDIO_SDIO_REV_1_10 1 /* SDIO Spec Version 1.10 */
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#define SDIO_SDIO_REV_1_20 2 /* SDIO Spec Version 1.20 */
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#define SDIO_SDIO_REV_2_00 3 /* SDIO Spec Version 2.00 */
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#define SDIO_CCCR_SD 0x01
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#define SDIO_SD_REV_1_01 0 /* SD Physical Spec Version 1.01 */
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#define SDIO_SD_REV_1_10 1 /* SD Physical Spec Version 1.10 */
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#define SDIO_SD_REV_2_00 2 /* SD Physical Spec Version 2.00 */
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#define SDIO_CCCR_IOEx 0x02
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#define SDIO_CCCR_IORx 0x03
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#define SDIO_CCCR_IENx 0x04 /* Function/Master Interrupt Enable */
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#define SDIO_CCCR_INTx 0x05 /* Function Interrupt Pending */
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#define SDIO_CCCR_ABORT 0x06 /* function abort/card reset */
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#define SDIO_CCCR_IF 0x07 /* bus interface controls */
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#define SDIO_BUS_WIDTH_1BIT 0x00
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#define SDIO_BUS_WIDTH_4BIT 0x02
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#define SDIO_BUS_CD_DISABLE 0x80 /* disable pull-up on DAT3 (pin 1) */
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#define SDIO_CCCR_CAPS 0x08
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#define SDIO_CCCR_CAP_SDC 0x01 /* can do CMD52 while data transfer */
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#define SDIO_CCCR_CAP_SMB 0x02 /* can do multi-block xfers (CMD53) */
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#define SDIO_CCCR_CAP_SRW 0x04 /* supports read-wait protocol */
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#define SDIO_CCCR_CAP_SBS 0x08 /* supports suspend/resume */
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#define SDIO_CCCR_CAP_S4MI 0x10 /* interrupt during 4-bit CMD53 */
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#define SDIO_CCCR_CAP_E4MI 0x20 /* enable ints during 4-bit CMD53 */
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#define SDIO_CCCR_CAP_LSC 0x40 /* low speed card */
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#define SDIO_CCCR_CAP_4BLS 0x80 /* 4 bit low speed card */
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#define SDIO_CCCR_CIS 0x09 /* common CIS pointer (3 bytes) */
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/* Following 4 regs are valid only if SBS is set */
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#define SDIO_CCCR_SUSPEND 0x0c
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#define SDIO_CCCR_SELx 0x0d
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#define SDIO_CCCR_EXECx 0x0e
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#define SDIO_CCCR_READYx 0x0f
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#define SDIO_CCCR_BLKSIZE 0x10
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#define SDIO_CCCR_POWER 0x12
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#define SDIO_POWER_SMPC 0x01 /* Supports Master Power Control */
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#define SDIO_POWER_EMPC 0x02 /* Enable Master Power Control */
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#define SDIO_CCCR_SPEED 0x13
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#define SDIO_SPEED_SHS 0x01 /* Supports High-Speed mode */
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#define SDIO_SPEED_EHS 0x02 /* Enable High-Speed mode */
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/*
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* Function Basic Registers (FBR)
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*/
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#define SDIO_FBR_STD_IF 0x00
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#define SDIO_FBR_SUPPORTS_CSA 0x40 /* supports Code Storage Area */
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#define SDIO_FBR_ENABLE_CSA 0x80 /* enable Code Storage Area */
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#define SDIO_FBR_STD_IF_EXT 0x01
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#define SDIO_FBR_POWER 0x02
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#define SDIO_FBR_POWER_SPS 0x01 /* Supports Power Selection */
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#define SDIO_FBR_POWER_EPS 0x02 /* Enable (low) Power Selection */
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#define SDIO_FBR_CIS 0x09 /* CIS pointer (3 bytes) */
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#define SDIO_FBR_CSA 0x0C /* CSA pointer (3 bytes) */
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#define SDIO_FBR_CSA_DATA 0x0F
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#define SDIO_FBR_BLKSIZE 0x10 /* block size (2 bytes) */
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#endif
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