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_recheck(struct mmc_host *host)
  28 {
  29         if (host->hold_retune <= 1)
  30                 host->retune_now = 1;
  31 }
  32
  33 static inline int mmc_host_cmd23(struct mmc_host *host)
  34 {
  35         return host->caps & MMC_CAP_CMD23;
  36 }
  37
  38 static inline int mmc_boot_partition_access(struct mmc_host *host)
  39 {
  40         return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
  41 }
  42
  43 static inline int mmc_host_uhs(struct mmc_host *host)
  44 {
  45         return host->caps &
  46                 (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
  47                  MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
  48                  MMC_CAP_UHS_DDR50);
  49 }
  50
  51 static inline bool mmc_card_hs200(struct mmc_card *card)
  52 {
  53         return card->host->ios.timing == MMC_TIMING_MMC_HS200;
  54 }
  55
  56 static inline bool mmc_card_ddr52(struct mmc_card *card)
  57 {
  58         return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
  59 }
  60
  61 static inline bool mmc_card_hs400(struct mmc_card *card)
  62 {
  63         return card->host->ios.timing == MMC_TIMING_MMC_HS400;
  64 }
  65
  66 static inline bool mmc_card_hs400es(struct mmc_card *card)
  67 {
  68         return card->host->ios.enhanced_strobe;
  69 }
  70
  71
  72 #endif
  73