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 void (*reset)(struct mmc_host *host); 22 }; 23 24 struct mmc_pwrseq { 25 const struct mmc_pwrseq_ops *ops; 26 struct device *dev; 27 struct list_head pwrseq_node; 28 struct module *owner; 29 }; 30 31 #ifdef CONFIG_OF 32 33 int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq); 34 void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq); 35 36 int mmc_pwrseq_alloc(struct mmc_host *host); 37 void mmc_pwrseq_pre_power_on(struct mmc_host *host); 38 void mmc_pwrseq_post_power_on(struct mmc_host *host); 39 void mmc_pwrseq_power_off(struct mmc_host *host); 40 void mmc_pwrseq_reset(struct mmc_host *host); 41 void mmc_pwrseq_free(struct mmc_host *host); 42 43 #else 44 45 static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq) 46 { 47 return -ENOSYS; 48 } 49 static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {} 50 static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; } 51 static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {} 52 static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {} 53 static inline void mmc_pwrseq_power_off(struct mmc_host *host) {} 54 static inline void mmc_pwrseq_reset(struct mmc_host *host) {} 55 static inline void mmc_pwrseq_free(struct mmc_host *host) {} 56 57 #endif 58 59 #endif 60