drivers/mmc/core/pwrseq.h

   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 struct mmc_pwrseq_ops {
  12         void (*pre_power_on)(struct mmc_host *host);
  13         void (*post_power_on)(struct mmc_host *host);
  14         void (*power_off)(struct mmc_host *host);
  15         void (*free)(struct mmc_host *host);
  16 };
  17
  18 struct mmc_pwrseq {
  19         const struct mmc_pwrseq_ops *ops;
  20 };
  21
  22 #ifdef CONFIG_OF
  23
  24 int mmc_pwrseq_alloc(struct mmc_host *host);
  25 void mmc_pwrseq_pre_power_on(struct mmc_host *host);
  26 void mmc_pwrseq_post_power_on(struct mmc_host *host);
  27 void mmc_pwrseq_power_off(struct mmc_host *host);
  28 void mmc_pwrseq_free(struct mmc_host *host);
  29
  30 struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
  31                                            struct device *dev);
  32 struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
  33                                          struct device *dev);
  34
  35 #else
  36
  37 static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
  38 static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
  39 static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
  40 static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
  41 static inline void mmc_pwrseq_free(struct mmc_host *host) {}
  42
  43 #endif
  44
  45 #endif