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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 0xCD13 14static 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 20static SPINAND_OP_VARIANTS(write_cache_variants,21 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),22 SPINAND_PROG_LOAD(true, 0, NULL, 0));23 24static SPINAND_OP_VARIANTS(update_cache_variants,25 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),26 SPINAND_PROG_LOAD(false, 0, NULL, 0));27 28static int f35sqa002g_ooblayout_ecc(struct mtd_info *mtd, int section,29 struct mtd_oob_region *region)30{31 return -ERANGE;32}33 34static 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 47static const struct mtd_ooblayout_ops f35sqa002g_ooblayout = {48 .ecc = f35sqa002g_ooblayout_ecc,49 .free = f35sqa002g_ooblayout_free,50};51 52static 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 and68 * cannot be corrected.69 */70 return -EBADMSG;71}72 73static 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 86static const struct spinand_manufacturer_ops foresee_spinand_manuf_ops = {87};88 89const 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