1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2020 Grandstream Networks, Inc
4 *
5 * Authors:
6 * Carl <xjxia@grandstream.cn>
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_SILICONGO 0xEA
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
sgm7000i_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)33 static int sgm7000i_ooblayout_ecc(struct mtd_info *mtd, int section,
34 struct mtd_oob_region *region)
35 {
36 return -ERANGE;
37 }
38
sgm7000i_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)39 static int sgm7000i_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 = mtd->oobsize - 2;
47
48 return 0;
49 }
50
51 static const struct mtd_ooblayout_ops sgm7000i_ooblayout = {
52 .ecc = sgm7000i_ooblayout_ecc,
53 .rfree = sgm7000i_ooblayout_free,
54 };
55
56 static const struct spinand_info silicongo_spinand_table[] = {
57 SPINAND_INFO("SGM7000I-S24W1GH",
58 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xC1),
59 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
60 NAND_ECCREQ(4, 512),
61 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
62 &write_cache_variants,
63 &update_cache_variants),
64 SPINAND_HAS_QE_BIT,
65 SPINAND_ECCINFO(&sgm7000i_ooblayout, NULL)),
66 };
67
68 static const struct spinand_manufacturer_ops silicongo_spinand_manuf_ops = {
69 };
70
71 const struct spinand_manufacturer silicongo_spinand_manufacturer = {
72 .id = SPINAND_MFR_SILICONGO,
73 .name = "silicongo",
74 .chips = silicongo_spinand_table,
75 .nchips = ARRAY_SIZE(silicongo_spinand_table),
76 .ops = &silicongo_spinand_manuf_ops,
77 };
78