text: /*
   *  linux/drivers/mmc/core/core.h
   *
   *  Copyright (C) 2003 Russell King, All Rights Reserved.
   *  Copyright 2007 Pierre Ossman
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  #ifndef _MMC_CORE_CORE_H
  #define _MMC_CORE_CORE_H
  
  #include <linux/delay.h>
  
  #define MMC_CMD_RETRIES        3
  
  struct mmc_bus_ops {
  	int (*awake)(struct mmc_host *);
  	int (*sleep)(struct mmc_host *);
  	void (*remove)(struct mmc_host *);
  	void (*detect)(struct mmc_host *);
  	int (*suspend)(struct mmc_host *);
  	int (*resume)(struct mmc_host *);
  	void (*power_save)(struct mmc_host *);
  	void (*power_restore)(struct mmc_host *);
  };
  
  void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
  void mmc_detach_bus(struct mmc_host *host);
  
  void mmc_set_chip_select(struct mmc_host *host, int mode);
  void mmc_set_clock(struct mmc_host *host, unsigned int hz);
  void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
  void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
  u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
  void mmc_set_timing(struct mmc_host *host, unsigned int timing);
  
  static inline void mmc_delay(unsigned int ms)
  {
  	if (ms < 1000 / HZ) {
  		cond_resched();
  		mdelay(ms);
  	} else {
  		msleep(ms);
  	}
  }
  
  void mmc_rescan(struct work_struct *work);
  void mmc_start_host(struct mmc_host *host);
  void mmc_stop_host(struct mmc_host *host);
  
  int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
  int mmc_attach_sd(struct mmc_host *host, u32 ocr);
  int mmc_attach_sdio(struct mmc_host *host, u32 ocr);
  
  /* Module parameters */
  extern int use_spi_crc;
  extern int mmc_assume_removable;
  
  /* Debugfs information for hosts and cards */
  void mmc_add_host_debugfs(struct mmc_host *host);
  void mmc_remove_host_debugfs(struct mmc_host *host);
  
  void mmc_add_card_debugfs(struct mmc_card *card);
  void mmc_remove_card_debugfs(struct mmc_card *card);
  
  #endif
  
  