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         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
  29 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
  30 void mmc_detach_bus(struct mmc_host *host);
  31
  32 void mmc_init_erase(struct mmc_card *card);
  33
  34 void mmc_set_chip_select(struct mmc_host *host, int mode);
  35 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
  36 void mmc_gate_clock(struct mmc_host *host);
  37 void mmc_ungate_clock(struct mmc_host *host);
  38 void mmc_set_ungated(struct mmc_host *host);
  39 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
  40 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
  41 void mmc_set_bus_width_ddr(struct mmc_host *host, unsigned int width,
  42                            unsigned int ddr);
  43 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
  44 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
  45
  46 static inline void mmc_delay(unsigned int ms)
  47 {
  48         if (ms < 1000 / HZ) {
  49                 cond_resched();
  50                 mdelay(ms);
  51         } else {
  52                 msleep(ms);
  53         }
  54 }
  55
  56 void mmc_rescan(struct work_struct *work);
  57 void mmc_start_host(struct mmc_host *host);
  58 void mmc_stop_host(struct mmc_host *host);
  59
  60 int mmc_attach_mmc(struct mmc_host *host);
  61 int mmc_attach_sd(struct mmc_host *host);
  62 int mmc_attach_sdio(struct mmc_host *host);
  63
  64 /* Module parameters */
  65 extern int use_spi_crc;
  66
  67 /* Debugfs information for hosts and cards */
  68 void mmc_add_host_debugfs(struct mmc_host *host);
  69 void mmc_remove_host_debugfs(struct mmc_host *host);
  70
  71 void mmc_add_card_debugfs(struct mmc_card *card);
  72 void mmc_remove_card_debugfs(struct mmc_card *card);
  73
  74 #endif
  75