[MTD] Add platform support for NAND
Add the data structures necessary to provide platform device support for NAND Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -510,4 +510,51 @@ extern int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
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#define NAND_SMALL_BADBLOCK_POS 5
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#define NAND_LARGE_BADBLOCK_POS 0
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/**
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* struct platform_nand_chip - chip level device structure
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*
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* @nr_chips: max. number of chips to scan for
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* @chip_offs: chip number offset
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* @nr_partitions: number of partitions pointed to be partitoons (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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* @priv: hardware controller specific settings
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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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void *priv;
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};
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/**
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* struct platform_nand_ctrl - controller level device structure
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*
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* @hwcontrol: platform specific hardware control structure
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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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* @priv_data: 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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void (*hwcontrol)(struct mtd_info *mtd, int cmd);
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int (*dev_ready)(struct mtd_info *mtd);
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void (*select_chip)(struct mtd_info *mtd, int chip);
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void *priv;
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};
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/* Some helpers to access the data structures */
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static inline
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struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd)
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{
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struct nand_chip *chip = mtd->priv;
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return chip->priv;
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}
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#endif /* __LINUX_MTD_NAND_H */
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