/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright © 2000 - 2010 David Woodhouse < dwmw2 @ infradead . org >
* Steven J . Hill < sjhill @ realitydiluted . com >
* Thomas Gleixner < tglx @ linutronix . de >
*
* Contains all platform NAND related definitions .
*/
#ifndef __LINUX_MTD_PLATNAND_H
#define __LINUX_MTD_PLATNAND_H
#include <linux/mtd/partitions.h>
#include <linux/mtd/rawnand.h>
#include <linux/platform_device.h>
/**
* struct platform_nand_chip - chip level device structure
* @ nr_chips : max . number of chips to scan for
* @ chip_offset : chip number offset
* @ nr_partitions : number of partitions pointed to by partitions ( or zero )
* @ partitions : mtd partition list
* @ chip_delay : R / B delay value in us
* @ options : Option flags , e . g . 16 bit buswidth
* @ bbt_options : BBT option flags , e . g . NAND_BBT_USE_FLASH
* @ part_probe_types : NULL - terminated array of probe types
*/
struct platform_nand_chip {
int nr_chips;
int chip_offset;
int nr_partitions;
struct mtd_partition *partitions;
int chip_delay;
unsigned int options;
unsigned int bbt_options;
const char **part_probe_types;
};
/**
* struct platform_nand_ctrl - controller level device structure
* @ probe : platform specific function to probe / setup hardware
* @ remove : platform specific function to remove / teardown hardware
* @ dev_ready : platform specific function to read ready / busy pin
* @ select_chip : platform specific chip select function
* @ cmd_ctrl : platform specific function for controlling
* ALE / CLE / nCE . Also used to write command and address
* @ write_buf : platform specific function for write buffer
* @ read_buf : platform specific function for read buffer
* @ priv : private data to transport driver specific settings
*
* All fields are optional and depend on the hardware driver requirements
*/
struct platform_nand_ctrl {
int (*probe)(struct platform_device *pdev);
void (*remove)(struct platform_device *pdev);
int (*dev_ready)(struct nand_chip *chip);
void (*select_chip)(struct nand_chip *chip, int cs);
void (*cmd_ctrl)(struct nand_chip *chip, int dat, unsigned int ctrl);
void (*write_buf)(struct nand_chip *chip, const uint8_t *buf, int len);
void (*read_buf)(struct nand_chip *chip, uint8_t *buf, int len);
void *priv;
};
/**
* struct platform_nand_data - container structure for platform - specific data
* @ chip : chip level chip structure
* @ ctrl : controller level device structure
*/
struct platform_nand_data {
struct platform_nand_chip chip;
struct platform_nand_ctrl ctrl;
};
#endif /* __LINUX_MTD_PLATNAND_H */
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