2 * Copyright (C) 2006 Micron Technology Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
9 #ifndef _MTD_NAND_OMAP2_H
10 #define _MTD_NAND_OMAP2_H
12 #include <linux/mtd/partitions.h>
14 #define GPMC_BCH_NUM_REMAINDER 8
17 NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */
18 NAND_OMAP_POLLED, /* polled mode, without prefetch */
19 NAND_OMAP_PREFETCH_DMA, /* prefetch enabled sDMA mode */
20 NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */
24 /* 1-bit ECC calculation by GPMC, Error detection by Software */
25 OMAP_ECC_HAM1_CODE_HW = 0,
26 /* 4-bit ECC calculation by GPMC, Error detection by Software */
27 OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
28 /* 4-bit ECC calculation by GPMC, Error detection by ELM */
29 OMAP_ECC_BCH4_CODE_HW,
30 /* 8-bit ECC calculation by GPMC, Error detection by Software */
31 OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
32 /* 8-bit ECC calculation by GPMC, Error detection by ELM */
33 OMAP_ECC_BCH8_CODE_HW,
36 struct gpmc_nand_regs {
37 void __iomem *gpmc_status;
38 void __iomem *gpmc_nand_command;
39 void __iomem *gpmc_nand_address;
40 void __iomem *gpmc_nand_data;
41 void __iomem *gpmc_prefetch_config1;
42 void __iomem *gpmc_prefetch_config2;
43 void __iomem *gpmc_prefetch_control;
44 void __iomem *gpmc_prefetch_status;
45 void __iomem *gpmc_ecc_config;
46 void __iomem *gpmc_ecc_control;
47 void __iomem *gpmc_ecc_size_config;
48 void __iomem *gpmc_ecc1_result;
49 void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
50 void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
51 void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
52 void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
55 struct omap_nand_platform_data {
57 struct mtd_partition *parts;
60 enum nand_io xfer_type;
62 enum omap_ecc ecc_opt;
63 struct gpmc_nand_regs reg;
65 /* for passing the partitions */
66 struct device_node *of_node;
67 struct device_node *elm_of_node;