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 static inline bool mmc_card_sd_express(struct mmc_host *host) 81 { 82 return host->ios.timing == MMC_TIMING_SD_EXP || 83 host->ios.timing == MMC_TIMING_SD_EXP_1_2V; 84 } 85 86 #endif 87 88