1 /* 2 * arch/arm/plat-omap/include/mach/nand.h 3 * 4 * Copyright (C) 2006 Micron Technology Inc. 5 * 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. 9 */ 10 11 #ifndef _MTD_NAND_OMAP2_H 12 #define _MTD_NAND_OMAP2_H 13 14 #include <linux/mtd/partitions.h> 15 16 #define GPMC_BCH_NUM_REMAINDER 8 17 18 enum nand_io { 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 */ 23 }; 24 25 enum omap_ecc { 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, 36 }; 37 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]; 55 }; 56 57 struct omap_nand_platform_data { 58 int cs; 59 struct mtd_partition *parts; 60 int nr_parts; 61 bool dev_ready; 62 enum nand_io xfer_type; 63 int devsize; 64 enum omap_ecc ecc_opt; 65 struct gpmc_nand_regs reg; 66 67 /* for passing the partitions */ 68 struct device_node *of_node; 69 struct device_node *elm_of_node; 70 }; 71 #endif 72