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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __DRIVERS_MTD_NAND_INGENIC_ECC_INTERNAL_H__
#define __DRIVERS_MTD_NAND_INGENIC_ECC_INTERNAL_H__
#include <linux/compiler_types.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <uapi/asm-generic/errno-base.h>
struct clk;
struct device;
struct ingenic_ecc;
struct platform_device;
/**
* struct ingenic_ecc_params - ECC parameters
* @size: data bytes per ECC step.
* @bytes: ECC bytes per step.
* @strength: number of correctable bits per ECC step.
*/
struct ingenic_ecc_params {
int size;
int bytes;
int strength;
};
#if IS_ENABLED(CONFIG_MTD_NAND_INGENIC_ECC)
int ingenic_ecc_calculate(struct ingenic_ecc *ecc,
struct ingenic_ecc_params *params,
const u8 *buf, u8 *ecc_code);
int ingenic_ecc_correct(struct ingenic_ecc *ecc,
struct ingenic_ecc_params *params, u8 *buf,
u8 *ecc_code);
void ingenic_ecc_release(struct ingenic_ecc *ecc);
struct ingenic_ecc *of_ingenic_ecc_get(struct device_node *np);
#else /* CONFIG_MTD_NAND_INGENIC_ECC */
static inline int ingenic_ecc_calculate(struct ingenic_ecc *ecc,
struct ingenic_ecc_params *params,
const u8 *buf, u8 *ecc_code)
{
return -ENODEV;
}
static inline int ingenic_ecc_correct(struct ingenic_ecc *ecc,
struct ingenic_ecc_params *params, u8 *buf,
u8 *ecc_code)
{
return -ENODEV;
}
static inline void ingenic_ecc_release(struct ingenic_ecc *ecc)
{
}
static inline struct ingenic_ecc *of_ingenic_ecc_get(struct device_node *np)
{
return ERR_PTR(-ENODEV);
}
#endif /* CONFIG_MTD_NAND_INGENIC_ECC */
struct ingenic_ecc_ops {
void (*disable)(struct ingenic_ecc *ecc);
int (*calculate)(struct ingenic_ecc *ecc,
struct ingenic_ecc_params *params,
const u8 *buf, u8 *ecc_code);
int (*correct)(struct ingenic_ecc *ecc,
struct ingenic_ecc_params *params,
u8 *buf, u8 *ecc_code);
};
struct ingenic_ecc {
struct device *dev;
const struct ingenic_ecc_ops *ops;
void __iomem *base;
struct clk *clk;
struct mutex lock;
};
int ingenic_ecc_probe(struct platform_device *pdev);
#endif /* __DRIVERS_MTD_NAND_INGENIC_ECC_INTERNAL_H__ */
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