[PATCH 16/26] mtd: nand: denali: Drop multichip support

[Sascha Hauer]

Current multichip support doesn't fir well into the coming update to the
NAND layer. Remove it for now, it will be added back when the denali
NAND driver is updated to current Linux.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/mtd/nand/nand_denali.c | 24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/drivers/mtd/nand/nand_denali.c b/drivers/mtd/nand/nand_denali.c
index 1bacbd3be2..bffcbd8a7f 100644
--- a/drivers/mtd/nand/nand_denali.c
+++ b/drivers/mtd/nand/nand_denali.c
@@ -1435,17 +1435,13 @@ int denali_init(struct denali_nand_info *denali)
 	 * the real pagesize and anything necessery
 	 */
 	denali->devnum = ioread32(denali->flash_reg + DEVICES_CONNECTED);
-	nand->chipsize <<= (denali->devnum - 1);
-	nand->page_shift += (denali->devnum - 1);
-	nand->pagemask = (nand->chipsize >> nand->page_shift) - 1;
-	nand->bbt_erase_shift += (denali->devnum - 1);
-	nand->phys_erase_shift = nand->bbt_erase_shift;
-	nand->chip_shift += (denali->devnum - 1);
-	mtd->writesize <<= (denali->devnum - 1);
-	mtd->oobsize <<= (denali->devnum - 1);
-	mtd->erasesize <<= (denali->devnum - 1);
-	mtd->size = nand->numchips * nand->chipsize;
-	denali->bbtskipbytes *= denali->devnum;
+	if (denali->devnum != 1) {
+		ret = -EINVAL;
+		dev_err(denali->dev,
+			"Multiple devices (%d) detected, not yet supported\n",
+			denali->devnum);
+		goto failed_req_irq;
+	}
 
 	/*
 	 * second stage of the NAND scan
@@ -1496,10 +1492,6 @@ int denali_init(struct denali_nand_info *denali)
 		iowrite32(8, denali->flash_reg + ECC_CORRECTION);
 	}
 
-	nand->ecc.bytes *= denali->devnum;
-	nand->ecc.strength *= denali->devnum;
-	nand->ecc.layout->eccbytes *=
-		mtd->writesize / ECC_SECTOR_SIZE;
 	nand->ecc.layout->oobfree[0].offset =
 		denali->bbtskipbytes + nand->ecc.layout->eccbytes;
 	nand->ecc.layout->oobfree[0].length =
@@ -1515,7 +1507,7 @@ int denali_init(struct denali_nand_info *denali)
 	denali->blksperchip = denali->totalblks / nand->numchips;
 
 	/* override the default read operations */
-	nand->ecc.size = ECC_SECTOR_SIZE * denali->devnum;
+	nand->ecc.size = ECC_SECTOR_SIZE;
 	nand->ecc.read_page = denali_read_page;
 	nand->ecc.read_page_raw = denali_read_page_raw;
 	nand->ecc.write_page = denali_write_page;
-- 
2.20.1