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
  18 struct mmc_bus_ops {
  19         void (*remove)(struct mmc_host *);
  20         void (*detect)(struct mmc_host *);
  21         void (*suspend)(struct mmc_host *);
  22         void (*resume)(struct mmc_host *);
  23 };
  24
  25 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
  26 void mmc_detach_bus(struct mmc_host *host);
  27
  28 void mmc_set_chip_select(struct mmc_host *host, int mode);
  29 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
  30 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
  31 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
  32 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
  33 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
  34
  35 static inline void mmc_delay(unsigned int ms)
  36 {
  37         if (ms < 1000 / HZ) {
  38                 cond_resched();
  39                 mdelay(ms);
  40         } else {
  41                 msleep(ms);
  42         }
  43 }
  44
  45 void mmc_rescan(struct work_struct *work);
  46 void mmc_start_host(struct mmc_host *host);
  47 void mmc_stop_host(struct mmc_host *host);
  48
  49 int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
  50 int mmc_attach_sd(struct mmc_host *host, u32 ocr);
  51 int mmc_attach_sdio(struct mmc_host *host, u32 ocr);
  52
  53 extern int use_spi_crc;
  54
  55 #endif
  56