1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2022 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_SKYHIGH 0x01 16 17 #define SKYHIGH_STATUS_ECC_1_2_BITFLIPS (1 << 4) 18 #define SKYHIGH_STATUS_ECC_3_4_BITFLIPS (2 << 4) 19 #define SKYHIGH_STATUS_ECC_UNCOR_ERROR (3 << 4) 20 21 static SPINAND_OP_VARIANTS(read_cache_variants, 22 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), 23 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 24 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), 25 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 26 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 27 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 28 29 static SPINAND_OP_VARIANTS(write_cache_variants, 30 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 31 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 32 33 static SPINAND_OP_VARIANTS(update_cache_variants, 34 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 35 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 36 37 static int s35ml04g3_ooblayout_ecc(struct mtd_info *mtd, int section, 38 struct mtd_oob_region *region) 39 { 40 return -ERANGE; 41 } 42 43 static int s35ml04g3_ooblayout_free(struct mtd_info *mtd, int section, 44 struct mtd_oob_region *region) 45 { 46 if (section) 47 return -ERANGE; 48 49 region->offset = 2; 50 region->length = mtd->oobsize - 2; 51 52 return 0; 53 } 54 55 static const struct mtd_ooblayout_ops s35ml04g3_ooblayout = { 56 .ecc = s35ml04g3_ooblayout_ecc, 57 .rfree = s35ml04g3_ooblayout_free, 58 }; 59 60 61 static int s35ml0xg3_ecc_get_status(struct spinand_device *spinand, 62 u8 status) 63 { 64 struct nand_device *nand = spinand_to_nand(spinand); 65 66 switch (status & STATUS_ECC_MASK) { 67 case STATUS_ECC_NO_BITFLIPS: 68 return 0; 69 70 case SKYHIGH_STATUS_ECC_UNCOR_ERROR: 71 return -EBADMSG; 72 73 case SKYHIGH_STATUS_ECC_1_2_BITFLIPS: 74 return 2; 75 76 default: 77 return nand->eccreq.strength; 78 } 79 80 return -EINVAL; 81 } 82 83 static const struct spinand_info skyhigh_spinand_table[] = { 84 SPINAND_INFO("S35ML01G3", 85 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x15), 86 NAND_MEMORG(1, 2048, 128, 64, 1024, 2, 1, 1), 87 NAND_ECCREQ(4, 512), 88 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 89 &write_cache_variants, 90 &update_cache_variants), 91 SPINAND_HAS_QE_BIT, 92 SPINAND_ECCINFO(&s35ml04g3_ooblayout, s35ml0xg3_ecc_get_status)), 93 SPINAND_INFO("S35ML02G3", 94 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25), 95 NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 1), 96 NAND_ECCREQ(4, 512), 97 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 98 &write_cache_variants, 99 &update_cache_variants), 100 SPINAND_HAS_QE_BIT, 101 SPINAND_ECCINFO(&s35ml04g3_ooblayout, s35ml0xg3_ecc_get_status)), 102 SPINAND_INFO("S35ML04G3", 103 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), 104 NAND_MEMORG(1, 2048, 128, 64, 4096, 2, 1, 1), 105 NAND_ECCREQ(4, 512), 106 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 107 &write_cache_variants, 108 &update_cache_variants), 109 SPINAND_HAS_QE_BIT, 110 SPINAND_ECCINFO(&s35ml04g3_ooblayout, s35ml0xg3_ecc_get_status)), 111 }; 112 113 static const struct spinand_manufacturer_ops skyhigh_spinand_manuf_ops = { 114 }; 115 116 const struct spinand_manufacturer skyhigh_spinand_manufacturer = { 117 .id = SPINAND_MFR_SKYHIGH, 118 .name = "skyhigh", 119 .chips = skyhigh_spinand_table, 120 .nchips = ARRAY_SIZE(skyhigh_spinand_table), 121 .ops = &skyhigh_spinand_manuf_ops, 122 }; 123