1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2021 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_SILICONGO 0xEA
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
sgm7000i_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)31 static int sgm7000i_ooblayout_ecc(struct mtd_info *mtd, int section,
32 struct mtd_oob_region *region)
33 {
34 return -ERANGE;
35 }
36
sgm7000i_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)37 static int sgm7000i_ooblayout_free(struct mtd_info *mtd, int section,
38 struct mtd_oob_region *region)
39 {
40 if (section)
41 return -ERANGE;
42
43 region->offset = 2;
44 region->length = mtd->oobsize - 2;
45
46 return 0;
47 }
48
49 static const struct mtd_ooblayout_ops sgm7000i_ooblayout = {
50 .ecc = sgm7000i_ooblayout_ecc,
51 .free = sgm7000i_ooblayout_free,
52 };
53
54 static const struct spinand_info silicongo_spinand_table[] = {
55 SPINAND_INFO("SGM7000I-S24W1GH",
56 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xC1),
57 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
58 NAND_ECCREQ(4, 512),
59 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
60 &write_cache_variants,
61 &update_cache_variants),
62 SPINAND_HAS_QE_BIT,
63 SPINAND_ECCINFO(&sgm7000i_ooblayout, NULL)),
64 };
65
66 static const struct spinand_manufacturer_ops silicongo_spinand_manuf_ops = {
67 };
68
69 const struct spinand_manufacturer silicongo_spinand_manufacturer = {
70 .id = SPINAND_MFR_SILICONGO,
71 .name = "silicongo",
72 .chips = silicongo_spinand_table,
73 .nchips = ARRAY_SIZE(silicongo_spinand_table),
74 .ops = &silicongo_spinand_manuf_ops,
75 };
76