LXR linux/drivers/mmc/core/host.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  linux/drivers/mmc/core/host.h
   4 *
   5 *  Copyright (C) 2003 Russell King, All Rights Reserved.
   6 *  Copyright 2007 Pierre Ossman
   7 */
   8#ifndef _MMC_CORE_HOST_H
   9#define _MMC_CORE_HOST_H
  10
  11#include <linux/mmc/host.h>
  12
  13int mmc_register_host_class(void);
  14void mmc_unregister_host_class(void);
  15
  16void mmc_retune_enable(struct mmc_host *host);
  17void mmc_retune_disable(struct mmc_host *host);
  18void mmc_retune_hold(struct mmc_host *host);
  19void mmc_retune_release(struct mmc_host *host);
  20int mmc_retune(struct mmc_host *host);
  21void mmc_retune_pause(struct mmc_host *host);
  22void mmc_retune_unpause(struct mmc_host *host);
  23
  24static inline void mmc_retune_clear(struct mmc_host *host)
  25{
  26        host->retune_now = 0;
  27        host->need_retune = 0;
  28}
  29
  30static inline void mmc_retune_hold_now(struct mmc_host *host)
  31{
  32        host->retune_now = 0;
  33        host->hold_retune += 1;
  34}
  35
  36static inline void mmc_retune_recheck(struct mmc_host *host)
  37{
  38        if (host->hold_retune <= 1)
  39                host->retune_now = 1;
  40}
  41
  42static inline int mmc_host_cmd23(struct mmc_host *host)
  43{
  44        return host->caps & MMC_CAP_CMD23;
  45}
  46
  47static inline bool mmc_host_done_complete(struct mmc_host *host)
  48{
  49        return host->caps & MMC_CAP_DONE_COMPLETE;
  50}
  51
  52static inline int mmc_boot_partition_access(struct mmc_host *host)
  53{
  54        return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
  55}
  56
  57static inline int mmc_host_uhs(struct mmc_host *host)
  58{
  59        return host->caps &
  60                (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
  61                 MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
  62                 MMC_CAP_UHS_DDR50) &&
  63               host->caps & MMC_CAP_4_BIT_DATA;
  64}
  65
  66static inline bool mmc_card_hs200(struct mmc_card *card)
  67{
  68        return card->host->ios.timing == MMC_TIMING_MMC_HS200;
  69}
  70
  71static inline bool mmc_card_ddr52(struct mmc_card *card)
  72{
  73        return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
  74}
  75
  76static inline bool mmc_card_hs400(struct mmc_card *card)
  77{
  78        return card->host->ios.timing == MMC_TIMING_MMC_HS400;
  79}
  80
  81static inline bool mmc_card_hs400es(struct mmc_card *card)
  82{
  83        return card->host->ios.enhanced_strobe;
  84}
  85
  86static inline bool mmc_card_sd_express(struct mmc_host *host)
  87{
  88        return host->ios.timing == MMC_TIMING_SD_EXP ||
  89                host->ios.timing == MMC_TIMING_SD_EXP_1_2V;
  90}
  91
  92#endif
  93
  94