1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2017 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_WINBOND 0xEF 17 18 #define WINBOND_CFG_BUF_READ BIT(3) 19 20 static SPINAND_OP_VARIANTS(read_cache_variants, 21 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 22 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 24 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 25 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 26 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 27 28 static SPINAND_OP_VARIANTS(write_cache_variants, 29 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 30 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 31 32 static SPINAND_OP_VARIANTS(update_cache_variants, 33 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 34 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 35 36 static int w25m02gv_ooblayout_ecc(struct mtd_info *mtd, int section, 37 struct mtd_oob_region *region) 38 { 39 if (section > 3) 40 return -ERANGE; 41 42 region->offset = (16 * section) + 8; 43 region->length = 8; 44 45 return 0; 46 } 47 48 static int w25m02gv_ooblayout_free(struct mtd_info *mtd, int section, 49 struct mtd_oob_region *region) 50 { 51 if (section > 3) 52 return -ERANGE; 53 54 region->offset = (16 * section) + 2; 55 region->length = 6; 56 57 return 0; 58 } 59 60 static const struct mtd_ooblayout_ops w25m02gv_ooblayout = { 61 .ecc = w25m02gv_ooblayout_ecc, 62 .rfree = w25m02gv_ooblayout_free, 63 }; 64 65 static int w25m02gv_select_target(struct spinand_device *spinand, 66 unsigned int target) 67 { 68 struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(0xc2, 1), 69 SPI_MEM_OP_NO_ADDR, 70 SPI_MEM_OP_NO_DUMMY, 71 SPI_MEM_OP_DATA_OUT(1, 72 spinand->scratchbuf, 73 1)); 74 75 *spinand->scratchbuf = target; 76 return spi_mem_exec_op(spinand->slave, &op); 77 } 78 79 static int w25n02kv_ooblayout_ecc(struct mtd_info *mtd, int section, 80 struct mtd_oob_region *region) 81 { 82 if (section) 83 return -ERANGE; 84 85 region->offset = 64; 86 region->length = 64; 87 88 return 0; 89 } 90 91 static int w25n02kv_ooblayout_free(struct mtd_info *mtd, int section, 92 struct mtd_oob_region *region) 93 { 94 if (section) 95 return -ERANGE; 96 97 /* Reserve 2 bytes for the BBM. */ 98 region->offset = 2; 99 region->length = 62; 100 101 return 0; 102 } 103 104 static const struct mtd_ooblayout_ops w25n02kv_ooblayout = { 105 .ecc = w25n02kv_ooblayout_ecc, 106 .rfree = w25n02kv_ooblayout_free, 107 }; 108 109 static int w25n02kv_ecc_get_status(struct spinand_device *spinand, 110 u8 status) 111 { 112 struct nand_device *nand = spinand_to_nand(spinand); 113 114 switch (status & STATUS_ECC_MASK) { 115 case STATUS_ECC_NO_BITFLIPS: 116 return 0; 117 118 case STATUS_ECC_UNCOR_ERROR: 119 return -EBADMSG; 120 121 case STATUS_ECC_HAS_BITFLIPS: 122 return 1; 123 124 default: 125 return nand->eccreq.strength; 126 } 127 128 return -EINVAL; 129 } 130 131 /* Another set for the same id[2] devices in one series */ 132 static const struct spinand_info winbond_spinand_table[] = { 133 SPINAND_INFO("W25M02GV", 134 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAB), 135 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 2), 136 NAND_ECCREQ(1, 512), 137 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 138 &write_cache_variants, 139 &update_cache_variants), 140 0, 141 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 142 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 143 SPINAND_INFO("W25N512GV", 144 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x20), 145 NAND_MEMORG(1, 2048, 64, 64, 512, 1, 1, 1), 146 NAND_ECCREQ(1, 512), 147 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 148 &write_cache_variants, 149 &update_cache_variants), 150 0, 151 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 152 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 153 SPINAND_INFO("W25N01GV", 154 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x21), 155 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 156 NAND_ECCREQ(1, 512), 157 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 158 &write_cache_variants, 159 &update_cache_variants), 160 0, 161 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 162 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 163 SPINAND_INFO("W25N02KV", 164 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x22), 165 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), 166 NAND_ECCREQ(8, 512), 167 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 168 &write_cache_variants, 169 &update_cache_variants), 170 0, 171 SPINAND_ECCINFO(&w25n02kv_ooblayout, 172 w25n02kv_ecc_get_status)), 173 SPINAND_INFO("W25N04KV", 174 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAA, 0x23), 175 NAND_MEMORG(1, 2048, 128, 64, 4096, 1, 1, 1), 176 NAND_ECCREQ(8, 512), 177 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 178 &write_cache_variants, 179 &update_cache_variants), 180 0, 181 SPINAND_ECCINFO(&w25n02kv_ooblayout, 182 w25n02kv_ecc_get_status)), 183 SPINAND_INFO("W25N01GW", 184 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x21), 185 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 186 NAND_ECCREQ(1, 512), 187 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 188 &write_cache_variants, 189 &update_cache_variants), 190 0, 191 SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL), 192 SPINAND_SELECT_TARGET(w25m02gv_select_target)), 193 SPINAND_INFO("W25N02KW", 194 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x22), 195 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1), 196 NAND_ECCREQ(8, 512), 197 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 198 &write_cache_variants, 199 &update_cache_variants), 200 0, 201 SPINAND_ECCINFO(&w25n02kv_ooblayout, 202 w25n02kv_ecc_get_status)), 203 SPINAND_INFO("W25N01KV", 204 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xAE, 0x21), 205 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1), 206 NAND_ECCREQ(4, 512), 207 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 208 &write_cache_variants, 209 &update_cache_variants), 210 0, 211 SPINAND_ECCINFO(&w25n02kv_ooblayout, 212 w25n02kv_ecc_get_status)), 213 }; 214 215 static int winbond_spinand_init(struct spinand_device *spinand) 216 { 217 struct nand_device *nand = spinand_to_nand(spinand); 218 unsigned int i; 219 220 /* 221 * Make sure all dies are in buffer read mode and not continuous read 222 * mode. 223 */ 224 for (i = 0; i < nand->memorg.ntargets; i++) { 225 spinand_select_target(spinand, i); 226 spinand_upd_cfg(spinand, WINBOND_CFG_BUF_READ, 227 WINBOND_CFG_BUF_READ); 228 } 229 230 return 0; 231 } 232 233 static const struct spinand_manufacturer_ops winbond_spinand_manuf_ops = { 234 .init = winbond_spinand_init, 235 }; 236 237 const struct spinand_manufacturer winbond_spinand_manufacturer = { 238 .id = SPINAND_MFR_WINBOND, 239 .name = "Winbond", 240 .chips = winbond_spinand_table, 241 .nchips = ARRAY_SIZE(winbond_spinand_table), 242 .ops = &winbond_spinand_manuf_ops, 243 }; 244