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_clear(struct mmc_host *host) 25 { 26 host->retune_now = 0; 27 host->need_retune = 0; 28 } 29 30 static inline void mmc_retune_hold_now(struct mmc_host *host) 31 { 32 host->retune_now = 0; 33 host->hold_retune += 1; 34 } 35 36 static inline void mmc_retune_recheck(struct mmc_host *host) 37 { 38 if (host->hold_retune <= 1) 39 host->retune_now = 1; 40 } 41 42 static inline int mmc_host_cmd23(struct mmc_host *host) 43 { 44 return host->caps & MMC_CAP_CMD23; 45 } 46 47 static inline bool mmc_host_done_complete(struct mmc_host *host) 48 { 49 return host->caps & MMC_CAP_DONE_COMPLETE; 50 } 51 52 static inline int mmc_boot_partition_access(struct mmc_host *host) 53 { 54 return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC); 55 } 56 57 static 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 66 static inline bool mmc_card_hs200(struct mmc_card *card) 67 { 68 return card->host->ios.timing == MMC_TIMING_MMC_HS200; 69 } 70 71 static inline bool mmc_card_ddr52(struct mmc_card *card) 72 { 73 return card->host->ios.timing == MMC_TIMING_MMC_DDR52; 74 } 75 76 static inline bool mmc_card_hs400(struct mmc_card *card) 77 { 78 return card->host->ios.timing == MMC_TIMING_MMC_HS400; 79 } 80 81 static inline bool mmc_card_hs400es(struct mmc_card *card) 82 { 83 return card->host->ios.enhanced_strobe; 84 } 85 86 static 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