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
fm25s01a_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)33 static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
34 struct mtd_oob_region *region)
35 {
36 return -ERANGE;
37 }
38
fm25s01a_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)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
fm25s01_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)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
fm25s01_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)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 /*
86 * ecc bits: 0xC0[4,6]
87 * [0b000], No bit errors were detected;
88 * [0b001] and [0b011], 1~6 Bit errors were detected and corrected. Not
89 * reach Flipping Bits;
90 * [0b101], Bit error count equals the bit flip
91 * detection threshold
92 * [0b010], Multiple bit errors were detected and
93 * not corrected.
94 * others, Reserved.
95 */
fm25s01bi3_ecc_ecc_get_status(struct spinand_device * spinand,u8 status)96 static int fm25s01bi3_ecc_ecc_get_status(struct spinand_device *spinand,
97 u8 status)
98 {
99 struct nand_device *nand = spinand_to_nand(spinand);
100 u8 eccsr = (status & GENMASK(6, 4)) >> 4;
101
102 if (eccsr <= 1 || eccsr == 3)
103 return eccsr;
104 else if (eccsr == 5)
105 return nand->eccreq.strength;
106 else
107 return -EBADMSG;
108 }
109
110 static const struct spinand_info fmsh_spinand_table[] = {
111 SPINAND_INFO("FM25S01A",
112 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
113 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
114 NAND_ECCREQ(1, 512),
115 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
116 &write_cache_variants,
117 &update_cache_variants),
118 0,
119 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)),
120 SPINAND_INFO("FM25S02A",
121 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE5),
122 NAND_MEMORG(1, 2048, 64, 64, 2048, 2, 1, 1),
123 NAND_ECCREQ(1, 512),
124 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
125 &write_cache_variants,
126 &update_cache_variants),
127 SPINAND_HAS_QE_BIT,
128 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)),
129 SPINAND_INFO("FM25S01",
130 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
131 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
132 NAND_ECCREQ(1, 512),
133 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
134 &write_cache_variants,
135 &update_cache_variants),
136 0,
137 SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)),
138 SPINAND_INFO("FM25LS01",
139 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA5),
140 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
141 NAND_ECCREQ(1, 512),
142 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
143 &write_cache_variants,
144 &update_cache_variants),
145 0,
146 SPINAND_ECCINFO(&fm25s01_ooblayout, NULL)),
147 SPINAND_INFO("FM25S01BI3",
148 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4),
149 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
150 NAND_ECCREQ(8, 512),
151 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
152 &write_cache_variants,
153 &update_cache_variants),
154 SPINAND_HAS_QE_BIT,
155 SPINAND_ECCINFO(&fm25s01_ooblayout, fm25s01bi3_ecc_ecc_get_status)),
156 };
157
158 static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = {
159 };
160
161 const struct spinand_manufacturer fmsh_spinand_manufacturer = {
162 .id = SPINAND_MFR_FMSH,
163 .name = "FMSH",
164 .chips = fmsh_spinand_table,
165 .nchips = ARRAY_SIZE(fmsh_spinand_table),
166 .ops = &fmsh_spinand_manuf_ops,
167 };
168