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 #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_GSTO 0x52
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
gss0xgsak1_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)33 static int gss0xgsak1_ooblayout_ecc(struct mtd_info *mtd, int section,
34 struct mtd_oob_region *region)
35 {
36 if (section)
37 return -ERANGE;
38
39 region->offset = 32;
40 region->length = 32;
41
42 return 0;
43 }
44
gss0xgsak1_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)45 static int gss0xgsak1_ooblayout_free(struct mtd_info *mtd, int section,
46 struct mtd_oob_region *region)
47 {
48 if (section)
49 return -ERANGE;
50
51 region->offset = 2;
52 region->length = 30;
53
54 return 0;
55 }
56
57 static const struct mtd_ooblayout_ops gss0xgsak1_ooblayout = {
58 .ecc = gss0xgsak1_ooblayout_ecc,
59 .rfree = gss0xgsak1_ooblayout_free,
60 };
61
62 static const struct spinand_info gsto_spinand_table[] = {
63 SPINAND_INFO("GSS01GSAK1",
64 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x13),
65 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
66 NAND_ECCREQ(4, 512),
67 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
68 &write_cache_variants,
69 &update_cache_variants),
70 0,
71 SPINAND_ECCINFO(&gss0xgsak1_ooblayout, NULL)),
72 SPINAND_INFO("GSS02GSAK1",
73 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBA, 0x23),
74 NAND_MEMORG(1, 2048, 64, 64, 2048, 1, 1, 1),
75 NAND_ECCREQ(4, 512),
76 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
77 &write_cache_variants,
78 &update_cache_variants),
79 0,
80 SPINAND_ECCINFO(&gss0xgsak1_ooblayout, NULL)),
81 };
82
83 static const struct spinand_manufacturer_ops gsto_spinand_manuf_ops = {
84 };
85
86 const struct spinand_manufacturer gsto_spinand_manufacturer = {
87 .id = SPINAND_MFR_GSTO,
88 .name = "GSTO",
89 .chips = gsto_spinand_table,
90 .nchips = ARRAY_SIZE(gsto_spinand_table),
91 .ops = &gsto_spinand_manuf_ops,
92 };
93