1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd. 4 * 5 * Author: Dingqiang Lin <jon.lin@rock-chips.com> 6 */ 7 8 #include <linux/device.h> 9 #include <linux/kernel.h> 10 #include <linux/mtd/spinand.h> 11 12 #define SPINAND_MFR_FMSH 0xA1 13 14 static SPINAND_OP_VARIANTS(read_cache_variants, 15 SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 2, NULL, 0, 0), 16 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0), 17 SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 1, NULL, 0, 0), 18 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0), 19 SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0), 20 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0)); 21 22 static SPINAND_OP_VARIANTS(write_cache_variants, 23 SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0), 24 SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0)); 25 26 static SPINAND_OP_VARIANTS(update_cache_variants, 27 SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0), 28 SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0)); 29 30 static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section, 31 struct mtd_oob_region *region) 32 { 33 return -ERANGE; 34 } 35 36 static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section, 37 struct mtd_oob_region *region) 38 { 39 if (section) 40 return -ERANGE; 41 42 region->offset = 2; 43 region->length = 62; 44 45 return 0; 46 } 47 48 static const struct mtd_ooblayout_ops fm25s01a_ooblayout = { 49 .ecc = fm25s01a_ooblayout_ecc, 50 .free = fm25s01a_ooblayout_free, 51 }; 52 53 static const struct spinand_info fmsh_spinand_table[] = { 54 SPINAND_INFO("FM25S01A", 55 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4), 56 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), 57 NAND_ECCREQ(1, 512), 58 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 59 &write_cache_variants, 60 &update_cache_variants), 61 SPINAND_HAS_QE_BIT, 62 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), 63 }; 64 65 static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = { 66 }; 67 68 const struct spinand_manufacturer fmsh_spinand_manufacturer = { 69 .id = SPINAND_MFR_FMSH, 70 .name = "Fudan Micro", 71 .chips = fmsh_spinand_table, 72 .nchips = ARRAY_SIZE(fmsh_spinand_table), 73 .ops = &fmsh_spinand_manuf_ops, 74 }; 75