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kernel add
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/*
* Copyright © 2015 Broadcom Corporation
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __BRCMNAND_H__
#define __BRCMNAND_H__
#include <linux/types.h>
#include <linux/io.h>
struct platform_device;
struct dev_pm_ops;
struct brcmnand_soc {
bool (*ctlrdy_ack)(struct brcmnand_soc *soc);
void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en);
void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare);
};
static inline void brcmnand_soc_data_bus_prepare(struct brcmnand_soc *soc)
{
if (soc && soc->prepare_data_bus)
soc->prepare_data_bus(soc, true);
}
static inline void brcmnand_soc_data_bus_unprepare(struct brcmnand_soc *soc)
{
if (soc && soc->prepare_data_bus)
soc->prepare_data_bus(soc, false);
}
static inline u32 brcmnand_readl(void __iomem *addr)
{
/*
* MIPS endianness is configured by boot strap, which also reverses all
* bus endianness (i.e., big-endian CPU + big endian bus ==> native
* endian I/O).
*
* Other architectures (e.g., ARM) either do not support big endian, or
* else leave I/O in little endian mode.
*/
if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
return __raw_readl(addr);
else
return readl_relaxed(addr);
}
static inline void brcmnand_writel(u32 val, void __iomem *addr)
{
/* See brcmnand_readl() comments */
if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
__raw_writel(val, addr);
else
writel_relaxed(val, addr);
}
int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc);
int brcmnand_remove(struct platform_device *pdev);
extern const struct dev_pm_ops brcmnand_pm_ops;
#endif /* __BRCMNAND_H__ */
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