1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2014 Linaro Ltd
 4 *
 5 * Author: Ulf Hansson <ulf.hansson@linaro.org>
 6 */
 7#ifndef _MMC_CORE_PWRSEQ_H
 8#define _MMC_CORE_PWRSEQ_H
 9
10#include <linux/types.h>
11
12struct mmc_host;
13struct device;
14struct module;
15
16struct mmc_pwrseq_ops {
17	void (*pre_power_on)(struct mmc_host *host);
18	void (*post_power_on)(struct mmc_host *host);
19	void (*power_off)(struct mmc_host *host);
20	void (*reset)(struct mmc_host *host);
21};
22
23struct mmc_pwrseq {
24	const struct mmc_pwrseq_ops *ops;
25	struct device *dev;
26	struct list_head pwrseq_node;
27	struct module *owner;
28};
29
30#ifdef CONFIG_OF
31
32int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq);
33void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq);
34
35int mmc_pwrseq_alloc(struct mmc_host *host);
36void mmc_pwrseq_pre_power_on(struct mmc_host *host);
37void mmc_pwrseq_post_power_on(struct mmc_host *host);
38void mmc_pwrseq_power_off(struct mmc_host *host);
39void mmc_pwrseq_reset(struct mmc_host *host);
40void mmc_pwrseq_free(struct mmc_host *host);
41
42#else
43
44static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq)
45{
46	return -ENOSYS;
47}
48static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {}
49static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
50static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
51static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
52static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
53static inline void mmc_pwrseq_reset(struct mmc_host *host) {}
54static inline void mmc_pwrseq_free(struct mmc_host *host) {}
55
56#endif
57
58#endif