1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (c) 2024 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_ZBIT 0x5E
16
17 static SPINAND_OP_VARIANTS(read_cache_variants,
18 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, 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
zb35q01b_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)33 static int zb35q01b_ooblayout_ecc(struct mtd_info *mtd, int section,
34 struct mtd_oob_region *region)
35 {
36 return -ERANGE;
37 }
38
zb35q01b_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)39 static int zb35q01b_ooblayout_free(struct mtd_info *mtd, int section,
40 struct mtd_oob_region *region)
41 {
42 if (section)
43 return -ERANGE;
44
45 /* Reserve 2 bytes for the BBM. */
46 region->offset = 2;
47 region->length = mtd->oobsize - 2;
48
49 return 0;
50 }
51
52 static const struct mtd_ooblayout_ops zb35q01b_ooblayout = {
53 .ecc = zb35q01b_ooblayout_ecc,
54 .rfree = zb35q01b_ooblayout_free,
55 };
56
57 static const struct spinand_info zbit_spinand_table[] = {
58 SPINAND_INFO("ZB35Q01BYIG",
59 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
60 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
61 NAND_ECCREQ(8, 512),
62 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
63 &write_cache_variants,
64 &update_cache_variants),
65 0,
66 SPINAND_ECCINFO(&zb35q01b_ooblayout, NULL)),
67 SPINAND_INFO("ZB35Q04BYIG",
68 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xA3),
69 NAND_MEMORG(1, 2048, 128, 128, 2048, 1, 1, 1),
70 NAND_ECCREQ(8, 512),
71 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
72 &write_cache_variants,
73 &update_cache_variants),
74 SPINAND_HAS_QE_BIT,
75 SPINAND_ECCINFO(&zb35q01b_ooblayout, NULL)),
76 };
77
78 static const struct spinand_manufacturer_ops zbit_spinand_manuf_ops = {
79 };
80
81 const struct spinand_manufacturer zbit_spinand_manufacturer = {
82 .id = SPINAND_MFR_ZBIT,
83 .name = "ZBIT",
84 .chips = zbit_spinand_table,
85 .nchips = ARRAY_SIZE(zbit_spinand_table),
86 .ops = &zbit_spinand_manuf_ops,
87 };
88