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 
mmc_retune_hold_now(struct mmc_host * host)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 
mmc_retune_recheck(struct mmc_host * host)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 
mmc_host_cmd23(struct mmc_host * host)36 static inline int mmc_host_cmd23(struct mmc_host *host)
37 {
38 	return host->caps & MMC_CAP_CMD23;
39 }
40 
mmc_host_done_complete(struct mmc_host * host)41 static inline bool mmc_host_done_complete(struct mmc_host *host)
42 {
43 	return host->caps & MMC_CAP_DONE_COMPLETE;
44 }
45 
mmc_boot_partition_access(struct mmc_host * host)46 static inline int mmc_boot_partition_access(struct mmc_host *host)
47 {
48 	return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
49 }
50 
mmc_host_uhs(struct mmc_host * host)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 
mmc_card_hs200(struct mmc_card * card)60 static inline bool mmc_card_hs200(struct mmc_card *card)
61 {
62 	return card->host->ios.timing == MMC_TIMING_MMC_HS200;
63 }
64 
mmc_card_ddr52(struct mmc_card * card)65 static inline bool mmc_card_ddr52(struct mmc_card *card)
66 {
67 	return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
68 }
69 
mmc_card_hs400(struct mmc_card * card)70 static inline bool mmc_card_hs400(struct mmc_card *card)
71 {
72 	return card->host->ios.timing == MMC_TIMING_MMC_HS400;
73 }
74 
mmc_card_hs400es(struct mmc_card * card)75 static inline bool mmc_card_hs400es(struct mmc_card *card)
76 {
77 	return card->host->ios.enhanced_strobe;
78 }
79 
mmc_card_sd_express(struct mmc_host * host)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