LXR linux/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#include <linux/types.h>
  12
  13struct mmc_host;
  14struct device;
  15struct module;
  16
  17struct 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
  24struct 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
  33int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq);
  34void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq);
  35
  36int mmc_pwrseq_alloc(struct mmc_host *host);
  37void mmc_pwrseq_pre_power_on(struct mmc_host *host);
  38void mmc_pwrseq_post_power_on(struct mmc_host *host);
  39void mmc_pwrseq_power_off(struct mmc_host *host);
  40void mmc_pwrseq_reset(struct mmc_host *host);
  41void mmc_pwrseq_free(struct mmc_host *host);
  42
  43#else
  44
  45static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq)
  46{
  47        return -ENOSYS;
  48}
  49static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {}
  50static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
  51static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
  52static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
  53static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
  54static inline void mmc_pwrseq_reset(struct mmc_host *host) {}
  55static inline void mmc_pwrseq_free(struct mmc_host *host) {}
  56
  57#endif
  58
  59#endif
  60