1 | // SPDX-License-Identifier: (GPL-2.0+ OR MIT) |
2 | /* |
3 | * Copyright (c) 2023, SberDevices. All Rights Reserved. |
4 | * |
5 | * Author: Martin Kurbanov <mmkurbanov@salutedevices.com> |
6 | */ |
7 | |
8 | #include <linux/device.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/mtd/spinand.h> |
11 | |
12 | #define SPINAND_MFR_FORESEE 0xCD |
13 | |
14 | static SPINAND_OP_VARIANTS(read_cache_variants, |
15 | SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), |
16 | SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), |
17 | SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), |
18 | SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); |
19 | |
20 | static SPINAND_OP_VARIANTS(write_cache_variants, |
21 | SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), |
22 | SPINAND_PROG_LOAD(true, 0, NULL, 0)); |
23 | |
24 | static SPINAND_OP_VARIANTS(update_cache_variants, |
25 | SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), |
26 | SPINAND_PROG_LOAD(false, 0, NULL, 0)); |
27 | |
28 | static int f35sqa002g_ooblayout_ecc(struct mtd_info *mtd, int section, |
29 | struct mtd_oob_region *region) |
30 | { |
31 | return -ERANGE; |
32 | } |
33 | |
34 | static int f35sqa002g_ooblayout_free(struct mtd_info *mtd, int section, |
35 | struct mtd_oob_region *region) |
36 | { |
37 | if (section) |
38 | return -ERANGE; |
39 | |
40 | /* Reserve 2 bytes for the BBM. */ |
41 | region->offset = 2; |
42 | region->length = 62; |
43 | |
44 | return 0; |
45 | } |
46 | |
47 | static const struct mtd_ooblayout_ops f35sqa002g_ooblayout = { |
48 | .ecc = f35sqa002g_ooblayout_ecc, |
49 | .free = f35sqa002g_ooblayout_free, |
50 | }; |
51 | |
52 | static int f35sqa002g_ecc_get_status(struct spinand_device *spinand, u8 status) |
53 | { |
54 | struct nand_device *nand = spinand_to_nand(spinand); |
55 | |
56 | switch (status & STATUS_ECC_MASK) { |
57 | case STATUS_ECC_NO_BITFLIPS: |
58 | return 0; |
59 | |
60 | case STATUS_ECC_HAS_BITFLIPS: |
61 | return nanddev_get_ecc_conf(nand)->strength; |
62 | |
63 | default: |
64 | break; |
65 | } |
66 | |
67 | /* More than 1-bit error was detected in one or more sectors and |
68 | * cannot be corrected. |
69 | */ |
70 | return -EBADMSG; |
71 | } |
72 | |
73 | static const struct spinand_info foresee_spinand_table[] = { |
74 | SPINAND_INFO("F35SQA002G" , |
75 | SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x72, 0x72), |
76 | NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1), |
77 | NAND_ECCREQ(1, 512), |
78 | SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
79 | &write_cache_variants, |
80 | &update_cache_variants), |
81 | SPINAND_HAS_QE_BIT, |
82 | SPINAND_ECCINFO(&f35sqa002g_ooblayout, |
83 | f35sqa002g_ecc_get_status)), |
84 | }; |
85 | |
86 | static const struct spinand_manufacturer_ops foresee_spinand_manuf_ops = { |
87 | }; |
88 | |
89 | const struct spinand_manufacturer foresee_spinand_manufacturer = { |
90 | .id = SPINAND_MFR_FORESEE, |
91 | .name = "FORESEE" , |
92 | .chips = foresee_spinand_table, |
93 | .nchips = ARRAY_SIZE(foresee_spinand_table), |
94 | .ops = &foresee_spinand_manuf_ops, |
95 | }; |
96 | |