drivers/mmc/core/bus.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  linux/drivers/mmc/core/bus.h
   4  *
   5  *  Copyright (C) 2003 Russell King, All Rights Reserved.
   6  *  Copyright 2007 Pierre Ossman
   7  */
   8 #ifndef _MMC_CORE_BUS_H
   9 #define _MMC_CORE_BUS_H
  10
  11 #include <linux/device.h>
  12
  13 struct mmc_host;
  14 struct mmc_card;
  15
  16 #define MMC_DEV_ATTR(name, fmt, args...)                                        \
  17 static ssize_t mmc_##name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
  18 {                                                                               \
  19         struct mmc_card *card = mmc_dev_to_card(dev);                           \
  20         return sprintf(buf, fmt, args);                                         \
  21 }                                                                               \
  22 static DEVICE_ATTR(name, S_IRUGO, mmc_##name##_show, NULL)
  23
  24 struct mmc_card *mmc_alloc_card(struct mmc_host *host,
  25         struct device_type *type);
  26 int mmc_add_card(struct mmc_card *card);
  27 void mmc_remove_card(struct mmc_card *card);
  28
  29 int mmc_register_bus(void);
  30 void mmc_unregister_bus(void);
  31
  32 struct mmc_driver {
  33         struct device_driver drv;
  34         int (*probe)(struct mmc_card *card);
  35         void (*remove)(struct mmc_card *card);
  36         void (*shutdown)(struct mmc_card *card);
  37 };
  38
  39 int mmc_register_driver(struct mmc_driver *drv);
  40 void mmc_unregister_driver(struct mmc_driver *drv);
  41
  42 #endif