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bf517d6fec
mmc_return_hold() / mmc_retune_release() are used around a group of commands to prevent re-tuning between the commands. Re-tuning can still happen before the first command. In some cases, re-tuning must be prevented entirely. Add mmc_retune_hold_now() for that purpose. It is added in preparation for CQE support where it will be used by CQE recovery. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* linux/drivers/mmc/core/host.h
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*
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* Copyright (C) 2003 Russell King, All Rights Reserved.
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* Copyright 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 version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _MMC_CORE_HOST_H
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#define _MMC_CORE_HOST_H
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#include <linux/mmc/host.h>
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int mmc_register_host_class(void);
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void mmc_unregister_host_class(void);
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void mmc_retune_enable(struct mmc_host *host);
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void mmc_retune_disable(struct mmc_host *host);
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void mmc_retune_hold(struct mmc_host *host);
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void mmc_retune_hold_now(struct mmc_host *host);
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void mmc_retune_release(struct mmc_host *host);
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int mmc_retune(struct mmc_host *host);
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void mmc_retune_pause(struct mmc_host *host);
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void mmc_retune_unpause(struct mmc_host *host);
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static inline void mmc_retune_recheck(struct mmc_host *host)
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{
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if (host->hold_retune <= 1)
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host->retune_now = 1;
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}
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static inline int mmc_host_cmd23(struct mmc_host *host)
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{
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return host->caps & MMC_CAP_CMD23;
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}
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static inline int mmc_boot_partition_access(struct mmc_host *host)
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{
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return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
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}
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static inline int mmc_host_uhs(struct mmc_host *host)
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{
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return host->caps &
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(MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
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MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
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MMC_CAP_UHS_DDR50);
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}
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static inline bool mmc_card_hs200(struct mmc_card *card)
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{
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return card->host->ios.timing == MMC_TIMING_MMC_HS200;
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}
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static inline bool mmc_card_ddr52(struct mmc_card *card)
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{
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return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
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}
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static inline bool mmc_card_hs400(struct mmc_card *card)
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{
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return card->host->ios.timing == MMC_TIMING_MMC_HS400;
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}
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static inline bool mmc_card_hs400es(struct mmc_card *card)
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{
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return card->host->ios.enhanced_strobe;
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}
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#endif
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