1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/mtd/nand/spi/foresee.c b/drivers/mtd/nand/spi/foresee.c
new file mode 100644
index 000000000000..e0d2d9257045
--- /dev/null
+++ b/drivers/mtd/nand/spi/foresee.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2023, SberDevices. All Rights Reserved.
+ *
+ * Author: Martin Kurbanov <mmkurbanov@salutedevices.com>
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/mtd/spinand.h>
+
+#define SPINAND_MFR_FORESEE		0xCD
+
+static SPINAND_OP_VARIANTS(read_cache_variants,
+		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
+
+static SPINAND_OP_VARIANTS(write_cache_variants,
+		SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
+		SPINAND_PROG_LOAD(true, 0, NULL, 0));
+
+static SPINAND_OP_VARIANTS(update_cache_variants,
+		SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
+		SPINAND_PROG_LOAD(false, 0, NULL, 0));
+
+static int f35sqa002g_ooblayout_ecc(struct mtd_info *mtd, int section,
+				    struct mtd_oob_region *region)
+{
+	return -ERANGE;
+}
+
+static int f35sqa002g_ooblayout_free(struct mtd_info *mtd, int section,
+				     struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	/* Reserve 2 bytes for the BBM. */
+	region->offset = 2;
+	region->length = 62;
+
+	return 0;
+}
+
+static const struct mtd_ooblayout_ops f35sqa002g_ooblayout = {
+	.ecc = f35sqa002g_ooblayout_ecc,
+	.free = f35sqa002g_ooblayout_free,
+};
+
+static int f35sqa002g_ecc_get_status(struct spinand_device *spinand, u8 status)
+{
+	struct nand_device *nand = spinand_to_nand(spinand);
+
+	switch (status & STATUS_ECC_MASK) {
+	case STATUS_ECC_NO_BITFLIPS:
+		return 0;
+
+	case STATUS_ECC_HAS_BITFLIPS:
+		return nanddev_get_ecc_conf(nand)->strength;
+
+	default:
+		break;
+	}
+
+	/* More than 1-bit error was detected in one or more sectors and
+	 * cannot be corrected.
+	 */
+	return -EBADMSG;
+}
+
+static const struct spinand_info foresee_spinand_table[] = {
+	SPINAND_INFO("F35SQA002G",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x72, 0x72),
+		     NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
+		     NAND_ECCREQ(1, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_QE_BIT,
+		     SPINAND_ECCINFO(&f35sqa002g_ooblayout,
+				     f35sqa002g_ecc_get_status)),
+};
+
+static const struct spinand_manufacturer_ops foresee_spinand_manuf_ops = {
+};
+
+const struct spinand_manufacturer foresee_spinand_manufacturer = {
+	.id = SPINAND_MFR_FORESEE,
+	.name = "FORESEE",
+	.chips = foresee_spinand_table,
+	.nchips = ARRAY_SIZE(foresee_spinand_table),
+	.ops = &foresee_spinand_manuf_ops,
+};