LXR linux/drivers/mmc/core/core.h

   1/*
   2 *  linux/drivers/mmc/core/core.h
   3 *
   4 *  Copyright (C) 2003 Russell King, All Rights Reserved.
   5 *  Copyright 2007 Pierre Ossman
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11#ifndef _MMC_CORE_CORE_H
  12#define _MMC_CORE_CORE_H
  13
  14#include <linux/delay.h>
  15
  16#define MMC_CMD_RETRIES        3
  17
  18struct mmc_bus_ops {
  19        int (*awake)(struct mmc_host *);
  20        int (*sleep)(struct mmc_host *);
  21        void (*remove)(struct mmc_host *);
  22        void (*detect)(struct mmc_host *);
  23        int (*suspend)(struct mmc_host *);
  24        int (*resume)(struct mmc_host *);
  25        int (*power_save)(struct mmc_host *);
  26        int (*power_restore)(struct mmc_host *);
  27};
  28
  29void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
  30void mmc_detach_bus(struct mmc_host *host);
  31
  32void mmc_init_erase(struct mmc_card *card);
  33
  34void mmc_set_chip_select(struct mmc_host *host, int mode);
  35void mmc_set_clock(struct mmc_host *host, unsigned int hz);
  36void mmc_gate_clock(struct mmc_host *host);
  37void mmc_ungate_clock(struct mmc_host *host);
  38void mmc_set_ungated(struct mmc_host *host);
  39void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
  40void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
  41u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
  42int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage,
  43                           bool cmd11);
  44void mmc_set_timing(struct mmc_host *host, unsigned int timing);
  45void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
  46
  47static inline void mmc_delay(unsigned int ms)
  48{
  49        if (ms < 1000 / HZ) {
  50                cond_resched();
  51                mdelay(ms);
  52        } else {
  53                msleep(ms);
  54        }
  55}
  56
  57void mmc_rescan(struct work_struct *work);
  58void mmc_start_host(struct mmc_host *host);
  59void mmc_stop_host(struct mmc_host *host);
  60
  61int mmc_attach_mmc(struct mmc_host *host);
  62int mmc_attach_sd(struct mmc_host *host);
  63int mmc_attach_sdio(struct mmc_host *host);
  64
  65/* Module parameters */
  66extern int use_spi_crc;
  67
  68/* Debugfs information for hosts and cards */
  69void mmc_add_host_debugfs(struct mmc_host *host);
  70void mmc_remove_host_debugfs(struct mmc_host *host);
  71
  72void mmc_add_card_debugfs(struct mmc_card *card);
  73void mmc_remove_card_debugfs(struct mmc_card *card);
  74
  75#endif
  76
  77