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	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
25void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
26void mmc_detach_bus(struct mmc_host *host);
27
28void __mmc_release_bus(struct mmc_host *host);
29
30static inline void mmc_bus_get(struct mmc_host *host)
31{
32	unsigned long flags;
33
34	spin_lock_irqsave(&host->lock, flags);
35	host->bus_refs++;
36	spin_unlock_irqrestore(&host->lock, flags);
37}
38
39static inline void mmc_bus_put(struct mmc_host *host)
40{
41	unsigned long flags;
42
43	spin_lock_irqsave(&host->lock, flags);
44	host->bus_refs--;
45	if ((host->bus_refs == 0) && host->bus_ops)
46		__mmc_release_bus(host);
47	spin_unlock_irqrestore(&host->lock, flags);
48}
49
50void mmc_set_chip_select(struct mmc_host *host, int mode);
51void mmc_set_clock(struct mmc_host *host, unsigned int hz);
52void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
53void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
54u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
55void mmc_set_timing(struct mmc_host *host, unsigned int timing);
56
57struct mmc_card *mmc_alloc_card(struct mmc_host *host);
58
59static inline void mmc_delay(unsigned int ms)
60{
61	if (ms < 1000 / HZ) {
62		cond_resched();
63		mdelay(ms);
64	} else {
65		msleep(ms);
66	}
67}
68
69#endif
70