71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
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* linux/drivers/mmc/core/core.h
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*
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* Copyright (C) 2003 Russell King, All Rights Reserved.
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* Copyright 2007 Pierre Ossman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _MMC_CORE_CORE_H
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#define _MMC_CORE_CORE_H
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#include <linux/delay.h>
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#define MMC_CMD_RETRIES 3
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struct mmc_bus_ops {
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void (*remove)(struct mmc_host *);
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void (*detect)(struct mmc_host *);
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void (*suspend)(struct mmc_host *);
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void (*resume)(struct mmc_host *);
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};
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void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
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void mmc_detach_bus(struct mmc_host *host);
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void __mmc_release_bus(struct mmc_host *host);
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static inline void mmc_bus_get(struct mmc_host *host)
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{
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unsigned long flags;
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spin_lock_irqsave(&host->lock, flags);
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host->bus_refs++;
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spin_unlock_irqrestore(&host->lock, flags);
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}
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static inline void mmc_bus_put(struct mmc_host *host)
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{
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unsigned long flags;
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spin_lock_irqsave(&host->lock, flags);
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host->bus_refs--;
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if ((host->bus_refs == 0) && host->bus_ops)
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__mmc_release_bus(host);
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spin_unlock_irqrestore(&host->lock, flags);
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}
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void mmc_set_chip_select(struct mmc_host *host, int mode);
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void mmc_set_clock(struct mmc_host *host, unsigned int hz);
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void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
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void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
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u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
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void mmc_set_timing(struct mmc_host *host, unsigned int timing);
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struct mmc_card *mmc_alloc_card(struct mmc_host *host);
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static inline void mmc_delay(unsigned int ms)
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{
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if (ms < 1000 / HZ) {
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cond_resched();
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mdelay(ms);
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} else {
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msleep(ms);
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}
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}
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#endif
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