1 /* 2 * Copyright (C) 2014 Linaro Ltd 3 * 4 * Author: Ulf Hansson <ulf.hansson@linaro.org> 5 * 6 * License terms: GNU General Public License (GPL) version 2 7 */ 8 #ifndef _MMC_CORE_PWRSEQ_H 9 #define _MMC_CORE_PWRSEQ_H 10 11 #include <linux/types.h> 12 13 struct mmc_host; 14 struct device; 15 struct module; 16 17 struct mmc_pwrseq_ops { 18 void (*pre_power_on)(struct mmc_host *host); 19 void (*post_power_on)(struct mmc_host *host); 20 void (*power_off)(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_free(struct mmc_host *host); 40 41 #else 42 43 static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq) 44 { 45 return -ENOSYS; 46 } 47 static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {} 48 static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; } 49 static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {} 50 static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {} 51 static inline void mmc_pwrseq_power_off(struct mmc_host *host) {} 52 static inline void mmc_pwrseq_free(struct mmc_host *host) {} 53 54 #endif 55 56 #endif 57