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core.h
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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  int (*alive)(struct mmc_host *);
28 };
29 
30 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
31 void mmc_detach_bus(struct mmc_host *host);
32 
33 void mmc_init_erase(struct mmc_card *card);
34 
35 void mmc_set_chip_select(struct mmc_host *host, int mode);
36 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
37 void mmc_gate_clock(struct mmc_host *host);
38 void mmc_ungate_clock(struct mmc_host *host);
39 void mmc_set_ungated(struct mmc_host *host);
40 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
41 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
42 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
43 int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage,
44  bool cmd11);
45 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
46 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
47 void mmc_power_off(struct mmc_host *host);
48 
49 static inline void mmc_delay(unsigned int ms)
50 {
51  if (ms < 1000 / HZ) {
52  cond_resched();
53  mdelay(ms);
54  } else {
55  msleep(ms);
56  }
57 }
58 
59 void mmc_rescan(struct work_struct *work);
60 void mmc_start_host(struct mmc_host *host);
61 void mmc_stop_host(struct mmc_host *host);
62 
63 int _mmc_detect_card_removed(struct mmc_host *host);
64 
65 int mmc_attach_mmc(struct mmc_host *host);
66 int mmc_attach_sd(struct mmc_host *host);
67 int mmc_attach_sdio(struct mmc_host *host);
68 
69 /* Module parameters */
70 extern bool use_spi_crc;
71 
72 /* Debugfs information for hosts and cards */
73 void mmc_add_host_debugfs(struct mmc_host *host);
74 void mmc_remove_host_debugfs(struct mmc_host *host);
75 
76 void mmc_add_card_debugfs(struct mmc_card *card);
77 void mmc_remove_card_debugfs(struct mmc_card *card);
78 
79 #endif
80 
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