85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*
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* include/linux/mmc/sd.h
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*
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* Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
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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 _SD_H_
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#define _SD_H_
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#define MMC_CMD_RETRIES 3
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/* OCR bit definitions */
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#define SD_OCR_S18R (1 << 24) /* 1.8V switching request */
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#define SD_ROCR_S18A SD_OCR_S18R /* 1.8V switching accepted by card */
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#define SD_OCR_XPC (1 << 28) /* SDXC power control */
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#define SD_OCR_CCS (1 << 30) /* Card Capacity Status */
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/*
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* SD_SWITCH argument format:
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*
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* [31] Check (0) or switch (1)
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* [30:24] Reserved (0)
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* [23:20] Function group 6
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* [19:16] Function group 5
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* [15:12] Function group 4
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* [11:8] Function group 3
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* [7:4] Function group 2
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* [3:0] Function group 1
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*/
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/*
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* SD_SEND_IF_COND argument format:
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*
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* [31:12] Reserved (0)
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* [11:8] Host Voltage Supply Flags
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* [7:0] Check Pattern (0xAA)
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*/
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/*
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* SCR field definitions
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*/
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#define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */
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#define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */
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#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00-3.0X */
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/*
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* SD bus widths
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*/
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#define SD_BUS_WIDTH_1 0
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#define SD_BUS_WIDTH_4 2
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/*
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* SD_SWITCH mode
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*/
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#define SD_SWITCH_CHECK 0
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#define SD_SWITCH_SET 1
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/*
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* SD_SWITCH function groups
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*/
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#define SD_SWITCH_GRP_ACCESS 0
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/*
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* SD_SWITCH access modes
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*/
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#define SD_SWITCH_ACCESS_DEF 0
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#define SD_SWITCH_ACCESS_HS 1
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int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card);
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unsigned mmc_sd_get_max_clock(struct mmc_card *card);
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int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
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int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr);
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int mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card);
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int mmc_sd_switch_hs(struct mmc_card *card);
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int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card);
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int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
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unsigned int cmd_arg, unsigned int cmd_opcode, int retries);
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int mmc_app_set_bus_width(struct mmc_card *card, int width);
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int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, bool reinit);
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void mmc_decode_cid(struct mmc_card *card);
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#endif /* _SD_H_ */
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