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Commit 81ec5364 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by David Woodhouse
Browse files

[MTD] [NAND] Add support for 4KiB pages. 



Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarSebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 45b09076

drivers/mtd/nand/nand_base.c

+18 −0
Original line number Diff line number Diff line
@@ -82,6 +82,20 @@ static struct nand_ecclayout nand_oob_64 = { 
		 .length = 38}}

};



static struct nand_ecclayout nand_oob_128 = {

	.eccbytes = 48,

	.eccpos = {

		   80, 81, 82, 83, 84, 85, 86, 87,

		   88, 89, 90, 91, 92, 93, 94, 95,

		   96, 97, 98, 99, 100, 101, 102, 103,

		   104, 105, 106, 107, 108, 109, 110, 111,

		   112, 113, 114, 115, 116, 117, 118, 119,

		   120, 121, 122, 123, 124, 125, 126, 127},

	.oobfree = {

		{.offset = 2,

		 .length = 78}}

};



static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd,

			   int new_state);
@@ -2638,6 +2652,9 @@ int nand_scan_tail(struct mtd_info *mtd) 
		case 64:

			chip->ecc.layout = &nand_oob_64;

			break;

		case 128:

			chip->ecc.layout = &nand_oob_128;

			break;

		default:

			printk(KERN_WARNING "No oob scheme defined for "

			       "oobsize %d\n", mtd->oobsize);
@@ -2767,6 +2784,7 @@ int nand_scan_tail(struct mtd_info *mtd) 
			break;

		case 4:

		case 8:

		case 16:

			mtd->subpage_sft = 2;

			break;

		}

include/linux/mtd/nand.h

+2 −2
Original line number Diff line number Diff line
@@ -43,8 +43,8 @@ extern void nand_wait_ready(struct mtd_info *mtd); 
 * is supported now. If you add a chip with bigger oobsize/page

 * adjust this accordingly.

 */

#define NAND_MAX_OOBSIZE	64

#define NAND_MAX_PAGESIZE	2048

#define NAND_MAX_OOBSIZE	128

#define NAND_MAX_PAGESIZE	4096



/*

 * Constants for hardware specific CLE/ALE/NCE function