1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2023 Rockchip Electronics Co., Ltd
4 *
5 * Authors:
6 * Dingqiang Lin <jon.lin@rock-chips.com>
7 */
8
9 #include <linux/device.h>
10 #include <linux/kernel.h>
11 #include <linux/mtd/spinand.h>
12
13 #define SPINAND_MFR_GSTO 0x52
14
15 static SPINAND_OP_VARIANTS(read_cache_variants,
16 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
17 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
18 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
19 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
20 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
21 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
22
23 static SPINAND_OP_VARIANTS(write_cache_variants,
24 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
25 SPINAND_PROG_LOAD(true, 0, NULL, 0));
26
27 static SPINAND_OP_VARIANTS(update_cache_variants,
28 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
29 SPINAND_PROG_LOAD(false, 0, NULL, 0));
30
gss0xgsak1_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)31 static int gss0xgsak1_ooblayout_ecc(struct mtd_info *mtd, int section,
32 struct mtd_oob_region *region)
33 {
34 if (section)
35 return -ERANGE;
36
37 region->offset = 32;
38 region->length = 32;
39
40 return 0;
41 }
42
gss0xgsak1_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)43 static int gss0xgsak1_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 = 30;
51
52 return 0;
53 }
54
55 static const struct mtd_ooblayout_ops gss0xgsak1_ooblayout = {
56 .ecc = gss0xgsak1_ooblayout_ecc,
57 .free = gss0xgsak1_ooblayout_free,
58 };
59
60 static const struct spinand_info gsto_spinand_table[] = {
61 SPINAND_INFO("GSS01GSAK1",
62 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x13),
63 NAND_MEMORG(1, 2048, 64, 64, 1024, 10, 1, 1, 1),
64 NAND_ECCREQ(4, 512),
65 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
66 &write_cache_variants,
67 &update_cache_variants),
68 0,
69 SPINAND_ECCINFO(&gss0xgsak1_ooblayout, NULL)),
70 SPINAND_INFO("GSS02GSAK1",
71 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x23),
72 NAND_MEMORG(1, 2048, 64, 64, 2048, 20, 1, 1, 1),
73 NAND_ECCREQ(4, 512),
74 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
75 &write_cache_variants,
76 &update_cache_variants),
77 0,
78 SPINAND_ECCINFO(&gss0xgsak1_ooblayout, NULL)),
79 };
80
81 static const struct spinand_manufacturer_ops gsto_spinand_manuf_ops = {
82 };
83
84 const struct spinand_manufacturer gsto_spinand_manufacturer = {
85 .id = SPINAND_MFR_GSTO,
86 .name = "GSTO",
87 .chips = gsto_spinand_table,
88 .nchips = ARRAY_SIZE(gsto_spinand_table),
89 .ops = &gsto_spinand_manuf_ops,
90 };
91