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1c825ad1b8
Allows configuring Samsung's s3c2410 memory controller using a devicetree. Signed-off-by: Sergio Prado <sergio.prado@e-labworks.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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* Copyright (c) 2004 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* S3C2410 - NAND device controller platform_device info
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __MTD_NAND_S3C2410_H
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#define __MTD_NAND_S3C2410_H
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#include <linux/mtd/nand.h>
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/**
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* struct s3c2410_nand_set - define a set of one or more nand chips
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* @flash_bbt: Openmoko u-boot can create a Bad Block Table
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* Setting this flag will allow the kernel to
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* look for it at boot time and also skip the NAND
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* scan.
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* @options: Default value to set into 'struct nand_chip' options.
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* @nr_chips: Number of chips in this set
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* @nr_partitions: Number of partitions pointed to by @partitions
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* @name: Name of set (optional)
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* @nr_map: Map for low-layer logical to physical chip numbers (option)
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* @partitions: The mtd partition list
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*
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* define a set of one or more nand chips registered with an unique mtd. Also
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* allows to pass flag to the underlying NAND layer. 'disable_ecc' will trigger
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* a warning at boot time.
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*/
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struct s3c2410_nand_set {
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unsigned int flash_bbt:1;
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unsigned int options;
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int nr_chips;
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int nr_partitions;
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char *name;
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int *nr_map;
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struct mtd_partition *partitions;
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struct device_node *of_node;
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};
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struct s3c2410_platform_nand {
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/* timing information for controller, all times in nanoseconds */
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int tacls; /* time for active CLE/ALE to nWE/nOE */
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int twrph0; /* active time for nWE/nOE */
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int twrph1; /* time for release CLE/ALE from nWE/nOE inactive */
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unsigned int ignore_unset_ecc:1;
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nand_ecc_modes_t ecc_mode;
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int nr_sets;
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struct s3c2410_nand_set *sets;
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void (*select_chip)(struct s3c2410_nand_set *,
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int chip);
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};
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/**
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* s3c_nand_set_platdata() - register NAND platform data.
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* @nand: The NAND platform data to register with s3c_device_nand.
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*
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* This function copies the given NAND platform data, @nand and registers
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* it with the s3c_device_nand. This allows @nand to be __initdata.
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*/
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extern void s3c_nand_set_platdata(struct s3c2410_platform_nand *nand);
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#endif /*__MTD_NAND_S3C2410_H */
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