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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
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* Steven J. Hill <sjhill@realitydiluted.com>
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* Thomas Gleixner <tglx@linutronix.de>
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*
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* Contains all platform NAND related definitions.
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*/
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#ifndef __LINUX_MTD_PLATNAND_H
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#define __LINUX_MTD_PLATNAND_H
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/rawnand.h>
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#include <linux/platform_device.h>
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/**
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* struct platform_nand_chip - chip level device structure
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* @nr_chips: max. number of chips to scan for
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* @chip_offset: chip number offset
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* @nr_partitions: number of partitions pointed to by partitions (or zero)
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* @partitions: mtd partition list
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* @chip_delay: R/B delay value in us
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* @options: Option flags, e.g. 16bit buswidth
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* @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH
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* @part_probe_types: NULL-terminated array of probe types
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*/
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struct platform_nand_chip {
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int nr_chips;
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int chip_offset;
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int nr_partitions;
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struct mtd_partition *partitions;
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int chip_delay;
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unsigned int options;
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unsigned int bbt_options;
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const char **part_probe_types;
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};
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/**
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* struct platform_nand_ctrl - controller level device structure
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* @probe: platform specific function to probe/setup hardware
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* @remove: platform specific function to remove/teardown hardware
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* @dev_ready: platform specific function to read ready/busy pin
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* @select_chip: platform specific chip select function
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* @cmd_ctrl: platform specific function for controlling
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* ALE/CLE/nCE. Also used to write command and address
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* @write_buf: platform specific function for write buffer
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* @read_buf: platform specific function for read buffer
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* @priv: private data to transport driver specific settings
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*
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* All fields are optional and depend on the hardware driver requirements
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*/
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struct platform_nand_ctrl {
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int (*probe)(struct platform_device *pdev);
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void (*remove)(struct platform_device *pdev);
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int (*dev_ready)(struct nand_chip *chip);
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void (*select_chip)(struct nand_chip *chip, int cs);
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void (*cmd_ctrl)(struct nand_chip *chip, int dat, unsigned int ctrl);
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void (*write_buf)(struct nand_chip *chip, const uint8_t *buf, int len);
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void (*read_buf)(struct nand_chip *chip, uint8_t *buf, int len);
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void *priv;
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};
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/**
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* struct platform_nand_data - container structure for platform-specific data
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* @chip: chip level chip structure
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* @ctrl: controller level device structure
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*/
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struct platform_nand_data {
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struct platform_nand_chip chip;
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struct platform_nand_ctrl ctrl;
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};
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#endif /* __LINUX_MTD_PLATNAND_H */
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