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