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 85