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/* 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. 16bit 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 */