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
  13 int mmc_register_host_class(void);
  14 void mmc_unregister_host_class(void);
  15
  16 void mmc_retune_enable(struct mmc_host *host);
  17 void mmc_retune_disable(struct mmc_host *host);
  18 void mmc_retune_hold(struct mmc_host *host);
  19 void mmc_retune_release(struct mmc_host *host);
  20 int mmc_retune(struct mmc_host *host);
  21 void mmc_retune_pause(struct mmc_host *host);
  22 void mmc_retune_unpause(struct mmc_host *host);
  23
  24 static inline void mmc_retune_hold_now(struct mmc_host *host)
  25 {
  26         host->retune_now = 0;
  27         host->hold_retune += 1;
  28 }
  29
  30 static inline void mmc_retune_recheck(struct mmc_host *host)
  31 {
  32         if (host->hold_retune <= 1)
  33                 host->retune_now = 1;
  34 }
  35
  36 static inline int mmc_host_cmd23(struct mmc_host *host)
  37 {
  38         return host->caps & MMC_CAP_CMD23;
  39 }
  40
  41 static inline bool mmc_host_done_complete(struct mmc_host *host)
  42 {
  43         return host->caps & MMC_CAP_DONE_COMPLETE;
  44 }
  45
  46 static inline int mmc_boot_partition_access(struct mmc_host *host)
  47 {
  48         return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
  49 }
  50
  51 static inline int mmc_host_uhs(struct mmc_host *host)
  52 {
  53         return host->caps &
  54                 (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
  55                  MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
  56                  MMC_CAP_UHS_DDR50) &&
  57                host->caps & MMC_CAP_4_BIT_DATA;
  58 }
  59
  60 static inline bool mmc_card_hs200(struct mmc_card *card)
  61 {
  62         return card->host->ios.timing == MMC_TIMING_MMC_HS200;
  63 }
  64
  65 static inline bool mmc_card_ddr52(struct mmc_card *card)
  66 {
  67         return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
  68 }
  69
  70 static inline bool mmc_card_hs400(struct mmc_card *card)
  71 {
  72         return card->host->ios.timing == MMC_TIMING_MMC_HS400;
  73 }
  74
  75 static inline bool mmc_card_hs400es(struct mmc_card *card)
  76 {
  77         return card->host->ios.enhanced_strobe;
  78 }
  79
  80 #endif
  81