1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2006 Micron Technology Inc.
4 */
5
6 #ifndef _MTD_NAND_OMAP2_H
7 #define _MTD_NAND_OMAP2_H
8
9 #include <linux/mtd/partitions.h>
10 #include <linux/mod_devicetable.h>
11
12 #define GPMC_BCH_NUM_REMAINDER 8
13
14 enum nand_io {
15 NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */
16 NAND_OMAP_POLLED, /* polled mode, without prefetch */
17 NAND_OMAP_PREFETCH_DMA, /* prefetch enabled sDMA mode */
18 NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */
19 };
20
21 enum omap_ecc {
22 /*
23 * 1-bit ECC: calculation and correction by SW
24 * ECC stored at end of spare area
25 */
26 OMAP_ECC_HAM1_CODE_SW = 0,
27
28 /*
29 * 1-bit ECC: calculation by GPMC, Error detection by Software
30 * ECC layout compatible with ROM code layout
31 */
32 OMAP_ECC_HAM1_CODE_HW,
33 /* 4-bit ECC calculation by GPMC, Error detection by Software */
34 OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
35 /* 4-bit ECC calculation by GPMC, Error detection by ELM */
36 OMAP_ECC_BCH4_CODE_HW,
37 /* 8-bit ECC calculation by GPMC, Error detection by Software */
38 OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
39 /* 8-bit ECC calculation by GPMC, Error detection by ELM */
40 OMAP_ECC_BCH8_CODE_HW,
41 /* 16-bit ECC calculation by GPMC, Error detection by ELM */
42 OMAP_ECC_BCH16_CODE_HW,
43 };
44
45 struct gpmc_nand_regs {
46 void __iomem *gpmc_nand_command;
47 void __iomem *gpmc_nand_address;
48 void __iomem *gpmc_nand_data;
49 void __iomem *gpmc_prefetch_config1;
50 void __iomem *gpmc_prefetch_config2;
51 void __iomem *gpmc_prefetch_control;
52 void __iomem *gpmc_prefetch_status;
53 void __iomem *gpmc_ecc_config;
54 void __iomem *gpmc_ecc_control;
55 void __iomem *gpmc_ecc_size_config;
56 void __iomem *gpmc_ecc1_result;
57 void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER];
58 void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER];
59 void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER];
60 void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER];
61 void __iomem *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER];
62 void __iomem *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
63 void __iomem *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
64 };
65
66 static const struct of_device_id omap_nand_ids[] = {
67 { .compatible = "ti,omap2-nand", },
68 { .compatible = "ti,am64-nand", },
69 {},
70 };
71
72 #endif /* _MTD_NAND_OMAP2_H */
73
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