Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 144 insertions, 0 deletions

diff --git a/drivers/mtd/nand/spi/esmt.c b/drivers/mtd/nand/spi/esmt.c
new file mode 100644
index 0000000000..31c439a557
--- /dev/null
+++ b/drivers/mtd/nand/spi/esmt.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Author:
+ *	Chuanhong Guo <gch981213@gmail.com> - the main driver logic
+ *	Martin Kurbanov <mmkurbanov@sberdevices.ru> - OOB layout
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/mtd/spinand.h>
+
+/* ESMT uses GigaDevice 0xc8 JECDEC ID on some SPI NANDs */
+#define SPINAND_MFR_ESMT_C8			0xc8
+
+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));
+
+/*
+ * OOB spare area map (64 bytes)
+ *
+ * Bad Block Markers
+ * filled by HW and kernel                 Reserved
+ *   |                 +-----------------------+-----------------------+
+ *   |                 |                       |                       |
+ *   |                 |    OOB free data Area |non ECC protected      |
+ *   |   +-------------|-----+-----------------|-----+-----------------|-----+
+ *   |   |             |     |                 |     |                 |     |
+ * +-|---|----------+--|-----|--------------+--|-----|--------------+--|-----|--------------+
+ * | |   | section0 |  |     |    section1  |  |     |    section2  |  |     |    section3  |
+ * +-v-+-v-+---+----+--v--+--v--+-----+-----+--v--+--v--+-----+-----+--v--+--v--+-----+-----+
+ * |   |   |   |    |     |     |     |     |     |     |     |     |     |     |     |     |
+ * |0:1|2:3|4:7|8:15|16:17|18:19|20:23|24:31|32:33|34:35|36:39|40:47|48:49|50:51|52:55|56:63|
+ * |   |   |   |    |     |     |     |     |     |     |     |     |     |     |     |     |
+ * +---+---+-^-+--^-+-----+-----+--^--+--^--+-----+-----+--^--+--^--+-----+-----+--^--+--^--+
+ *           |    |                |     |                 |     |                 |     |
+ *           |    +----------------|-----+-----------------|-----+-----------------|-----+
+ *           |             ECC Area|(Main + Spare) - filled|by ESMT NAND HW        |
+ *           |                     |                       |                       |
+ *           +---------------------+-----------------------+-----------------------+
+ *                         OOB ECC protected Area - not used due to
+ *                         partial programming from some filesystems
+ *                             (like JFFS2 with cleanmarkers)
+ */
+
+#define ESMT_OOB_SECTION_COUNT			4
+#define ESMT_OOB_SECTION_SIZE(nand) \
+	(nanddev_per_page_oobsize(nand) / ESMT_OOB_SECTION_COUNT)
+#define ESMT_OOB_FREE_SIZE(nand) \
+	(ESMT_OOB_SECTION_SIZE(nand) / 2)
+#define ESMT_OOB_ECC_SIZE(nand) \
+	(ESMT_OOB_SECTION_SIZE(nand) - ESMT_OOB_FREE_SIZE(nand))
+#define ESMT_OOB_BBM_SIZE			2
+
+static int f50l1g41lb_ooblayout_ecc(struct mtd_info *mtd, int section,
+				    struct mtd_oob_region *region)
+{
+	struct nand_device *nand = mtd_to_nanddev(mtd);
+
+	if (section >= ESMT_OOB_SECTION_COUNT)
+		return -ERANGE;
+
+	region->offset = section * ESMT_OOB_SECTION_SIZE(nand) +
+			 ESMT_OOB_FREE_SIZE(nand);
+	region->length = ESMT_OOB_ECC_SIZE(nand);
+
+	return 0;
+}
+
+static int f50l1g41lb_ooblayout_free(struct mtd_info *mtd, int section,
+				     struct mtd_oob_region *region)
+{
+	struct nand_device *nand = mtd_to_nanddev(mtd);
+
+	if (section >= ESMT_OOB_SECTION_COUNT)
+		return -ERANGE;
+
+	/*
+	 * Reserve space for bad blocks markers (section0) and
+	 * reserved bytes (sections 1-3)
+	 */
+	region->offset = section * ESMT_OOB_SECTION_SIZE(nand) + 2;
+
+	/* Use only 2 non-protected ECC bytes per each OOB section */
+	region->length = 2;
+
+	return 0;
+}
+
+static const struct mtd_ooblayout_ops f50l1g41lb_ooblayout = {
+	.ecc = f50l1g41lb_ooblayout_ecc,
+	.free = f50l1g41lb_ooblayout_free,
+};
+
+static const struct spinand_info esmt_c8_spinand_table[] = {
+	SPINAND_INFO("F50L1G41LB",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01),
+		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+		     NAND_ECCREQ(1, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
+	SPINAND_INFO("F50D1G41LB",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11),
+		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+		     NAND_ECCREQ(1, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
+	SPINAND_INFO("F50D2G41KA",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51),
+		     NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
+};
+
+static const struct spinand_manufacturer_ops esmt_spinand_manuf_ops = {
+};
+
+const struct spinand_manufacturer esmt_c8_spinand_manufacturer = {
+	.id = SPINAND_MFR_ESMT_C8,
+	.name = "ESMT",
+	.chips = esmt_c8_spinand_table,
+	.nchips = ARRAY_SIZE(esmt_c8_spinand_table),
+	.ops = &esmt_spinand_manuf_ops,
+};