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(true, 0, NULL, 0),
35 SPINAND_PROG_LOAD(true, 0, NULL, 0));
36
s35ml04g3_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)37 static int s35ml04g3_ooblayout_ecc(struct mtd_info *mtd, int section,
38 struct mtd_oob_region *region)
39 {
40 return -ERANGE;
41 }
42
s35ml04g3_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)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
s35ml0xg3_ecc_get_status(struct spinand_device * spinand,u8 status)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