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 int (*shutdown)(struct mmc_host *);
29 };
30
31 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
32 void mmc_detach_bus(struct mmc_host *host);
33
34 void mmc_init_erase(struct mmc_card *card);
35
36 void mmc_set_chip_select(struct mmc_host *host, int mode);
37 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
38 void mmc_gate_clock(struct mmc_host *host);
39 void mmc_ungate_clock(struct mmc_host *host);
40 void mmc_set_ungated(struct mmc_host *host);
41 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
42 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
43 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
44 int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
45 int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
46 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
47 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
48 void mmc_power_off(struct mmc_host *host);
49 void mmc_power_cycle(struct mmc_host *host);
50
mmc_delay(unsigned int ms)51 static inline void mmc_delay(unsigned int ms)
52 {
53 if (ms < 1000 / HZ) {
54 cond_resched();
55 mdelay(ms);
56 } else {
57 msleep(ms);
58 }
59 }
60
61 void mmc_rescan(struct work_struct *work);
62 void mmc_start_host(struct mmc_host *host);
63 void mmc_stop_host(struct mmc_host *host);
64
65 int _mmc_detect_card_removed(struct mmc_host *host);
66
67 int mmc_attach_mmc(struct mmc_host *host);
68 int mmc_attach_sd(struct mmc_host *host);
69 int mmc_attach_sdio(struct mmc_host *host);
70
71 /* Module parameters */
72 extern bool use_spi_crc;
73
74 /* Debugfs information for hosts and cards */
75 void mmc_add_host_debugfs(struct mmc_host *host);
76 void mmc_remove_host_debugfs(struct mmc_host *host);
77
78 void mmc_add_card_debugfs(struct mmc_card *card);
79 void mmc_remove_card_debugfs(struct mmc_card *card);
80
81 void mmc_init_context_info(struct mmc_host *host);
82 #endif
83
84