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 59