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_ESMT 0xC8
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
f50lxx41x_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)33 static int f50lxx41x_ooblayout_ecc(struct mtd_info *mtd, int section,
34 struct mtd_oob_region *region)
35 {
36 if (section > 3)
37 return -ERANGE;
38
39 region->offset = (16 * section) + 8;
40 region->length = 8;
41
42 return 0;
43 }
44
f50lxx41x_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)45 static int f50lxx41x_ooblayout_free(struct mtd_info *mtd, int section,
46 struct mtd_oob_region *region)
47 {
48 if (section > 3)
49 return -ERANGE;
50
51 region->offset = (16 * section) + 2;
52 region->length = 6;
53
54 return 0;
55 }
56
57 static const struct mtd_ooblayout_ops f50lxx41x_ooblayout = {
58 .ecc = f50lxx41x_ooblayout_ecc,
59 .rfree = f50lxx41x_ooblayout_free,
60 };
61
62 static const struct spinand_info esmt_spinand_table[] = {
63 SPINAND_INFO("F50L1G41LB",
64 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x01),
65 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
66 NAND_ECCREQ(1, 512),
67 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
68 &write_cache_variants,
69 &update_cache_variants),
70 0,
71 SPINAND_ECCINFO(&f50lxx41x_ooblayout, NULL)),
72 };
73
74 static const struct spinand_manufacturer_ops esmt_spinand_manuf_ops = {
75 };
76
77 const struct spinand_manufacturer esmt_spinand_manufacturer = {
78 .id = SPINAND_MFR_ESMT,
79 .name = "esmt",
80 .chips = esmt_spinand_table,
81 .nchips = ARRAY_SIZE(esmt_spinand_table),
82 .ops = &esmt_spinand_manuf_ops,
83 };
84