/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright 2010 MontaVista Software, LLC.
 *
 * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
 */

#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[] ____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);
}

static inline u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg)
{
        return in_be16(host->ioaddr + (reg ^ 0x2));
}

static inline u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg)
{
        return in_8(host->ioaddr + (reg ^ 0x3));
}

static inline void sdhci_be32bs_writel(struct sdhci_host *host,
                                       u32 val, int reg)
{
        out_be32(host->ioaddr + reg, val);
}

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);
}

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);
}
#endif /* CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER */

void sdhci_get_property(struct platform_device *pdev);

static inline void sdhci_get_of_property(struct platform_device *pdev)
{
        return sdhci_get_property(pdev);
}

extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
                                          const struct sdhci_pltfm_data *pdata,
                                          size_t priv_size);

extern int sdhci_pltfm_init_and_add_host(struct platform_device *pdev,
                                         const struct sdhci_pltfm_data *pdata,
                                         size_t priv_size);
extern void sdhci_pltfm_remove(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 host->private;
}

extern const struct dev_pm_ops sdhci_pltfm_pmops;
#ifdef CONFIG_PM_SLEEP
int sdhci_pltfm_suspend(struct device *dev);
int sdhci_pltfm_resume(struct device *dev);
#else
static inline int sdhci_pltfm_suspend(struct device *dev) { return 0; }
static inline int sdhci_pltfm_resume(struct device *dev) { return 0; }
#endif

#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */