2 * arch/arm/plat-omap/include/mach/nand.h
4 * Copyright (C) 2006 Micron Technology Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #ifndef _MTD_NAND_OMAP2_H
12 #define _MTD_NAND_OMAP2_H
14 #include <linux/mtd/partitions.h>
16 #define GPMC_BCH_NUM_REMAINDER 8
19 NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */
20 NAND_OMAP_POLLED, /* polled mode, without prefetch */
21 NAND_OMAP_PREFETCH_DMA, /* prefetch enabled sDMA mode */
22 NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */
26 /* 1-bit ECC calculation by GPMC, Error detection by Software */
27 OMAP_ECC_HAM1_CODE_HW = 0,
28 /* 4-bit ECC calculation by GPMC, Error detection by Software */
29 OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
30 /* 4-bit ECC calculation by GPMC, Error detection by ELM */
31 OMAP_ECC_BCH4_CODE_HW,
32 /* 8-bit ECC calculation by GPMC, Error detection by Software */
33 OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
34 /* 8-bit ECC calculation by GPMC, Error detection by ELM */
35 OMAP_ECC_BCH8_CODE_HW,
38 struct gpmc_nand_regs {
39 void __iomem *gpmc_status;
40 void __iomem *gpmc_nand_command;
41 void __iomem *gpmc_nand_address;
42 void __iomem *gpmc_nand_data;
43 void __iomem *gpmc_prefetch_config1;
44 void __iomem *gpmc_prefetch_config2;
45 void __iomem *gpmc_prefetch_control;
46 void __iomem *gpmc_prefetch_status;
47 void __iomem *gpmc_ecc_config;
48 void __iomem *gpmc_ecc_control;
49 void __iomem *gpmc_ecc_size_config;
50 void __iomem *gpmc_ecc1_result;
51 void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
52 void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
53 void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
54 void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
57 struct omap_nand_platform_data {
59 struct mtd_partition *parts;
62 enum nand_io xfer_type;
64 enum omap_ecc ecc_opt;
65 struct gpmc_nand_regs reg;
67 /* for passing the partitions */
68 struct device_node *of_node;
69 struct device_node *elm_of_node;