1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2020 exceet electronics GmbH 4 * 5 * Authors: 6 * Frieder Schrempf <frieder.schrempf@exceet.de> 7 * Boris Brezillon <boris.brezillon@bootlin.com> 8 */ 9 10 #ifndef __UBOOT__ 11 #include <linux/device.h> 12 #include <linux/kernel.h> 13 #endif 14 #include <linux/mtd/spinand.h> 15 16 #define SPINAND_MFR_HYF 0xC9 17 18 static SPINAND_OP_VARIANTS(read_cache_variants, 19 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 20 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 21 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 22 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 24 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 25 26 static SPINAND_OP_VARIANTS(write_cache_variants, 27 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 28 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 29 30 static SPINAND_OP_VARIANTS(update_cache_variants, 31 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 32 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 33 34 static int hyf1gq4upacae_ooblayout_ecc(struct mtd_info *mtd, int section, 35 struct mtd_oob_region *region) 36 { 37 if (section) 38 return -ERANGE; 39 40 region->offset = 64; 41 region->length = 64; 42 43 return 0; 44 } 45 46 static int hyf1gq4upacae_ooblayout_free(struct mtd_info *mtd, int section, 47 struct mtd_oob_region *region) 48 { 49 if (section) 50 return -ERANGE; 51 52 region->offset = 1; 53 region->length = 63; 54 55 return 0; 56 } 57 58 static const struct mtd_ooblayout_ops hyf1gq4upacae_ooblayout = { 59 .ecc = hyf1gq4upacae_ooblayout_ecc, 60 .rfree = hyf1gq4upacae_ooblayout_free, 61 }; 62 63 static int hyf1gq4udacae_ooblayout_ecc(struct mtd_info *mtd, int section, 64 struct mtd_oob_region *region) 65 { 66 if (section > 3) 67 return -ERANGE; 68 69 region->offset = (16 * section) + 8; 70 region->length = 8; 71 72 return 0; 73 } 74 75 static int hyf1gq4udacae_ooblayout_free(struct mtd_info *mtd, int section, 76 struct mtd_oob_region *region) 77 { 78 if (section > 3) 79 return -ERANGE; 80 81 region->offset = (16 * section) + 4; 82 region->length = 4; 83 84 return 0; 85 } 86 87 static const struct mtd_ooblayout_ops hyf1gq4udacae_ooblayout = { 88 .ecc = hyf1gq4udacae_ooblayout_ecc, 89 .rfree = hyf1gq4udacae_ooblayout_free, 90 }; 91 92 static int hyf1gq4udacae_ecc_get_status(struct spinand_device *spinand, 93 u8 status) 94 { 95 struct nand_device *nand = spinand_to_nand(spinand); 96 97 switch (status & STATUS_ECC_MASK) { 98 case STATUS_ECC_NO_BITFLIPS: 99 return 0; 100 101 case STATUS_ECC_UNCOR_ERROR: 102 return -EBADMSG; 103 104 case STATUS_ECC_HAS_BITFLIPS: 105 return 1; 106 107 default: 108 return nand->eccreq.strength; 109 } 110 111 return -EINVAL; 112 } 113 114 static const struct spinand_info hyf_spinand_table[] = { 115 SPINAND_INFO("HYF1GQ4UPACAE", 0xA1, 116 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 117 NAND_ECCREQ(1, 512), 118 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 119 &write_cache_variants, 120 &update_cache_variants), 121 SPINAND_HAS_QE_BIT, 122 SPINAND_ECCINFO(&hyf1gq4upacae_ooblayout, NULL)), 123 SPINAND_INFO("HYF1GQ4UDACAE", 0x21, 124 NAND_MEMORG(1, 2048, 64, 64, 1024, 2, 1, 1), 125 NAND_ECCREQ(4, 512), 126 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 127 &write_cache_variants, 128 &update_cache_variants), 129 SPINAND_HAS_QE_BIT, 130 SPINAND_ECCINFO(&hyf1gq4udacae_ooblayout, 131 hyf1gq4udacae_ecc_get_status)), 132 }; 133 134 /** 135 * hyf_spinand_detect - initialize device related part in spinand_device 136 * struct if it is a hyf device. 137 * @spinand: SPI NAND device structure 138 */ 139 static int hyf_spinand_detect(struct spinand_device *spinand) 140 { 141 u8 *id = spinand->id.data; 142 int ret; 143 144 /* 145 * hyf SPI NAND read ID needs a dummy byte, so the first byte in 146 * raw_id is garbage. 147 */ 148 if (id[1] != SPINAND_MFR_HYF) 149 return 0; 150 151 ret = spinand_match_and_init(spinand, hyf_spinand_table, 152 ARRAY_SIZE(hyf_spinand_table), 153 id[2]); 154 if (ret) 155 return ret; 156 157 return 1; 158 } 159 160 static const struct spinand_manufacturer_ops hyf_spinand_manuf_ops = { 161 .detect = hyf_spinand_detect, 162 }; 163 164 const struct spinand_manufacturer hyf_spinand_manufacturer = { 165 .id = SPINAND_MFR_HYF, 166 .name = "hyf", 167 .ops = &hyf_spinand_manuf_ops, 168 }; 169