1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd 4 * 5 * Authors: 6 * Dingqiang Lin <jon.lin@rock-chips.com> 7 */ 8 9 #ifndef __UBOOT__ 10 #include <linux/device.h> 11 #include <linux/kernel.h> 12 #endif 13 #include <linux/mtd/spinand.h> 14 15 #define SPINAND_MFR_FMSH 0xA1 16 17 static SPINAND_OP_VARIANTS(read_cache_variants, 18 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 19 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 20 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 21 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 22 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 24 25 static SPINAND_OP_VARIANTS(write_cache_variants, 26 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 27 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 28 29 static SPINAND_OP_VARIANTS(update_cache_variants, 30 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 31 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 32 33 static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section, 34 struct mtd_oob_region *region) 35 { 36 return -ERANGE; 37 } 38 39 static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section, 40 struct mtd_oob_region *region) 41 { 42 if (section) 43 return -ERANGE; 44 45 region->offset = 2; 46 region->length = 62; 47 48 return 0; 49 } 50 51 static const struct mtd_ooblayout_ops fm25s01a_ooblayout = { 52 .ecc = fm25s01a_ooblayout_ecc, 53 .rfree = fm25s01a_ooblayout_free, 54 }; 55 56 static int fm25s01_ooblayout_ecc(struct mtd_info *mtd, int section, 57 struct mtd_oob_region *region) 58 { 59 if (section) 60 return -ERANGE; 61 62 region->offset = 64; 63 region->length = 64; 64 65 return 0; 66 } 67 68 static int fm25s01_ooblayout_free(struct mtd_info *mtd, int section, 69 struct mtd_oob_region *region) 70 { 71 if (section) 72 return -ERANGE; 73 74 region->offset = 2; 75 region->length = 62; 76 77 return 0; 78 } 79 80 static const struct mtd_ooblayout_ops fm25s01_ooblayout = { 81 .ecc = fm25s01_ooblayout_ecc, 82 .rfree = fm25s01_ooblayout_free, 83 }; 84 85 static const struct spinand_info fmsh_spinand_table[] = { 86 SPINAND_INFO("FM25S01A", 0xE4, 87 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 88 NAND_ECCREQ(1, 512), 89 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 90 &write_cache_variants, 91 &update_cache_variants), 92 0, 93 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), 94 SPINAND_INFO("FM25S02A", 0xE5, 95 NAND_MEMORG(1, 2048, 64, 64, 2048, 2, 1, 1), 96 NAND_ECCREQ(1, 512), 97 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 98 &write_cache_variants, 99 &update_cache_variants), 100 1, 101 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), 102 SPINAND_INFO("FM25S01", 0xA1, 103 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1), 104 NAND_ECCREQ(1, 512), 105 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 106 &write_cache_variants, 107 &update_cache_variants), 108 0, 109 SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)), 110 }; 111 112 /** 113 * fmsh_spinand_detect - initialize device related part in spinand_device 114 * struct if it is a FMSH device. 115 * @spinand: SPI NAND device structure 116 */ 117 static int fmsh_spinand_detect(struct spinand_device *spinand) 118 { 119 u8 *id = spinand->id.data; 120 int ret; 121 122 /* 123 * FMSH SPI NAND read ID need a dummy byte, 124 * so the first byte in raw_id is dummy. 125 */ 126 if (id[1] != SPINAND_MFR_FMSH) 127 return 0; 128 129 ret = spinand_match_and_init(spinand, fmsh_spinand_table, 130 ARRAY_SIZE(fmsh_spinand_table), id[2]); 131 if (ret) 132 return ret; 133 134 return 1; 135 } 136 137 static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = { 138 .detect = fmsh_spinand_detect, 139 }; 140 141 const struct spinand_manufacturer fmsh_spinand_manufacturer = { 142 .id = SPINAND_MFR_FMSH, 143 .name = "FMSH", 144 .ops = &fmsh_spinand_manuf_ops, 145 }; 146