Release 4.7 drivers/mmc/host/sdhci-pltfm.h
/*
* Copyright 2010 MontaVista Software, LLC.
*
* Author: Anton Vorontsov <avorontsov@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _DRIVERS_MMC_SDHCI_PLTFM_H
#define _DRIVERS_MMC_SDHCI_PLTFM_H
#include <linux/clk.h>
#include <linux/platform_device.h>
#include "sdhci.h"
struct sdhci_pltfm_data {
const struct sdhci_ops *ops;
unsigned int quirks;
unsigned int quirks2;
};
struct sdhci_pltfm_host {
struct clk *clk;
/* migrate from sdhci_of_host */
unsigned int clock;
u16 xfer_mode_shadow;
unsigned long private[0] ____cacheline_aligned;
};
#ifdef CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
/*
* These accessors are designed for big endian hosts doing I/O to
* little endian controllers incorporating a 32-bit hardware byte swapper.
*/
static inline u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg)
{
return in_be32(host->ioaddr + reg);
}
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static inline u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg)
{
return in_be16(host->ioaddr + (reg ^ 0x2));
}
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static inline u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg)
{
return in_8(host->ioaddr + (reg ^ 0x3));
}
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static inline void sdhci_be32bs_writel(struct sdhci_host *host,
u32 val, int reg)
{
out_be32(host->ioaddr + reg, val);
}
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static inline void sdhci_be32bs_writew(struct sdhci_host *host,
u16 val, int reg)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
int base = reg & ~0x3;
int shift = (reg & 0x2) * 8;
switch (reg) {
case SDHCI_TRANSFER_MODE:
/*
* Postpone this write, we must do it together with a
* command write that is down below.
*/
pltfm_host->xfer_mode_shadow = val;
return;
case SDHCI_COMMAND:
sdhci_be32bs_writel(host,
val << 16 | pltfm_host->xfer_mode_shadow,
SDHCI_TRANSFER_MODE);
return;
}
clrsetbits_be32(host->ioaddr + base, 0xffff << shift, val << shift);
}
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static inline void sdhci_be32bs_writeb(struct sdhci_host *host, u8 val, int reg)
{
int base = reg & ~0x3;
int shift = (reg & 0x3) * 8;
clrsetbits_be32(host->ioaddr + base , 0xff << shift, val << shift);
}
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#endif /* CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER */
extern void sdhci_get_of_property(struct platform_device *pdev);
extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
const struct sdhci_pltfm_data *pdata,
size_t priv_size);
extern void sdhci_pltfm_free(struct platform_device *pdev);
extern int sdhci_pltfm_register(struct platform_device *pdev,
const struct sdhci_pltfm_data *pdata,
size_t priv_size);
extern int sdhci_pltfm_unregister(struct platform_device *pdev);
extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host);
static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
{
return (void *)host->private;
}
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#ifdef CONFIG_PM
extern int sdhci_pltfm_suspend(struct device *dev);
extern int sdhci_pltfm_resume(struct device *dev);
extern const struct dev_pm_ops sdhci_pltfm_pmops;
#define SDHCI_PLTFM_PMOPS (&sdhci_pltfm_pmops)
#else
#define SDHCI_PLTFM_PMOPS NULL
#endif
#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
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