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 12 struct mmc_host; 13 struct device; 14 struct module; 15 16 struct 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 23 struct 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 32 int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq); 33 void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq); 34 35 int mmc_pwrseq_alloc(struct mmc_host *host); 36 void mmc_pwrseq_pre_power_on(struct mmc_host *host); 37 void mmc_pwrseq_post_power_on(struct mmc_host *host); 38 void mmc_pwrseq_power_off(struct mmc_host *host); 39 void mmc_pwrseq_reset(struct mmc_host *host); 40 void mmc_pwrseq_free(struct mmc_host *host); 41 42 #else 43 44 static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq) 45 { 46 return -ENOSYS; 47 } 48 static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {} 49 static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; } 50 static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {} 51 static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {} 52 static inline void mmc_pwrseq_power_off(struct mmc_host *host) {} 53 static inline void mmc_pwrseq_reset(struct mmc_host *host) {} 54 static inline void mmc_pwrseq_free(struct mmc_host *host) {} 55 56 #endif 57 58 #endif 59