drivers/mmc/core/host.h

   1 /*
   2  *  linux/drivers/mmc/core/host.h
   3  *
   4  *  Copyright (C) 2003 Russell King, All Rights Reserved.
   5  *  Copyright 2007 Pierre Ossman
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #ifndef _MMC_CORE_HOST_H
  12 #define _MMC_CORE_HOST_H
  13
  14 #include <linux/mmc/host.h>
  15
  16 int mmc_register_host_class(void);
  17 void mmc_unregister_host_class(void);
  18
  19 void mmc_retune_enable(struct mmc_host *host);
  20 void mmc_retune_disable(struct mmc_host *host);
  21 void mmc_retune_hold(struct mmc_host *host);
  22 void mmc_retune_release(struct mmc_host *host);
  23 int mmc_retune(struct mmc_host *host);
  24 void mmc_retune_pause(struct mmc_host *host);
  25 void mmc_retune_unpause(struct mmc_host *host);
  26
  27 static inline void mmc_retune_hold_now(struct mmc_host *host)
  28 {
  29         host->retune_now = 0;
  30         host->hold_retune += 1;
  31 }
  32
  33 static inline void mmc_retune_recheck(struct mmc_host *host)
  34 {
  35         if (host->hold_retune <= 1)
  36                 host->retune_now = 1;
  37 }
  38
  39 static inline int mmc_host_cmd23(struct mmc_host *host)
  40 {
  41         return host->caps & MMC_CAP_CMD23;
  42 }
  43
  44 static inline bool mmc_host_done_complete(struct mmc_host *host)
  45 {
  46         return host->caps & MMC_CAP_DONE_COMPLETE;
  47 }
  48
  49 static inline int mmc_boot_partition_access(struct mmc_host *host)
  50 {
  51         return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
  52 }
  53
  54 static inline int mmc_host_uhs(struct mmc_host *host)
  55 {
  56         return host->caps &
  57                 (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
  58                  MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
  59                  MMC_CAP_UHS_DDR50) &&
  60                host->caps & MMC_CAP_4_BIT_DATA;
  61 }
  62
  63 static inline bool mmc_card_hs200(struct mmc_card *card)
  64 {
  65         return card->host->ios.timing == MMC_TIMING_MMC_HS200;
  66 }
  67
  68 static inline bool mmc_card_ddr52(struct mmc_card *card)
  69 {
  70         return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
  71 }
  72
  73 static inline bool mmc_card_hs400(struct mmc_card *card)
  74 {
  75         return card->host->ios.timing == MMC_TIMING_MMC_HS400;
  76 }
  77
  78 static inline bool mmc_card_hs400es(struct mmc_card *card)
  79 {
  80         return card->host->ios.enhanced_strobe;
  81 }
  82
  83 #endif
  84