[PATCH] mtd: spinand: Add support for GigaDevice GD5F1GQ4UC

[Stefan Roese <sr@xxxxxxx>]

Add support for GigaDevice GD5F1GQ4UC SPI NAND chip.

Signed-off-by: Stefan Roese <sr@xxxxxxx>
Cc: Chuanhong Guo <gch981213@xxxxxxxxx>
Cc: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
Cc: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
Frankly, I'm a bit unsure, if these new ooblayout_foo functions are 
needed for this device. I was unable to find a datasheet for the
already supported devices (GD5F1G/2G/4GQ4xA), so I couldn't compare
the OOB area values here with the ones for my SPI NAND chip.

I'm also not 100% sure, if I should use NAND_ECCREQ(8, 2048) or
NAND_ECCREQ(8, 512) for this device.

So comments welcome.

Thanks,
Stefan

 drivers/mtd/nand/spi/gigadevice.c | 39 +++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
index e4141c20947a..a9d256fa2577 100644
--- a/drivers/mtd/nand/spi/gigadevice.c
+++ b/drivers/mtd/nand/spi/gigadevice.c
@@ -57,6 +57,31 @@ static int gd5fxgq4xa_ooblayout_free(struct mtd_info *mtd, int section,
 	return 0;
 }
 
+static int gd5f1gq4u_ooblayout_ecc(struct mtd_info *mtd, int section,
+				   struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	region->offset = 64;
+	region->length = 64;
+
+	return 0;
+}
+
+static int gd5f1gq4u_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 int gd5fxgq4xa_ecc_get_status(struct spinand_device *spinand,
 					 u8 status)
 {
@@ -86,6 +111,11 @@ static const struct mtd_ooblayout_ops gd5fxgq4xa_ooblayout = {
 	.free = gd5fxgq4xa_ooblayout_free,
 };
 
+static const struct mtd_ooblayout_ops gd5f1gq4u_ooblayout = {
+	.ecc = gd5f1gq4u_ooblayout_ecc,
+	.free = gd5f1gq4u_ooblayout_free,
+};
+
 static const struct spinand_info gigadevice_spinand_table[] = {
 	SPINAND_INFO("GD5F1GQ4xA", 0xF1,
 		     NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
@@ -114,6 +144,15 @@ static const struct spinand_info gigadevice_spinand_table[] = {
 		     0,
 		     SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
 				     gd5fxgq4xa_ecc_get_status)),
+	SPINAND_INFO("GD5F1GQ4UC", 0xd1,
+		     NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
+		     NAND_ECCREQ(8, 2048),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&gd5f1gq4u_ooblayout,
+				     gd5fxgq4xa_ecc_get_status)),
 };
 
 static int gigadevice_spinand_detect(struct spinand_device *spinand)
-- 
2.20.1


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