Commit e5b2d30e authored by Boris Brezillon's avatar Boris Brezillon
Browse files

mtd: nand: sharpsl: switch to mtd_ooblayout_ops 



Implementing the mtd_ooblayout_ops interface is the new way of exposing
ECC/OOB layout to MTD users.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
parent 7cf9c19a

arch/arm/mach-pxa/spitz.c

+45 −10
Original line number Diff line number Diff line
@@ -763,14 +763,49 @@ static struct nand_bbt_descr spitz_nand_bbt = { 
	.pattern	= scan_ff_pattern

};



static struct nand_ecclayout akita_oobinfo = {

	.oobfree	= { {0x08, 0x09} },

	.eccbytes	= 24,

	.eccpos		= {

			0x05, 0x01, 0x02, 0x03, 0x06, 0x07, 0x15, 0x11,

			0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,

			0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37,

	},

static int akita_ooblayout_ecc(struct mtd_info *mtd, int section,

			       struct mtd_oob_region *oobregion)

{

	if (section > 12)

		return -ERANGE;



	switch (section % 3) {

	case 0:

		oobregion->offset = 5;

		oobregion->length = 1;

		break;



	case 1:

		oobregion->offset = 1;

		oobregion->length = 3;

		break;



	case 2:

		oobregion->offset = 6;

		oobregion->length = 2;

		break;

	}



	oobregion->offset += (section / 3) * 0x10;



	return 0;

}



static int akita_ooblayout_free(struct mtd_info *mtd, int section,

				struct mtd_oob_region *oobregion)

{

	if (section)

		return -ERANGE;



	oobregion->offset = 8;

	oobregion->length = 9;



	return 0;

}



static const struct mtd_ooblayout_ops akita_ooblayout_ops = {

	.ecc = akita_ooblayout_ecc,

	.free = akita_ooblayout_free,

};



static struct sharpsl_nand_platform_data spitz_nand_pdata = {
@@ -804,11 +839,11 @@ static void __init spitz_nand_init(void) 
	} else if (machine_is_akita()) {

		spitz_nand_partitions[1].size = 58 * 1024 * 1024;

		spitz_nand_bbt.len = 1;

		spitz_nand_pdata.ecc_layout = &akita_oobinfo;

		spitz_nand_pdata.ecc_layout = &akita_ooblayout_ops;

	} else if (machine_is_borzoi()) {

		spitz_nand_partitions[1].size = 32 * 1024 * 1024;

		spitz_nand_bbt.len = 1;

		spitz_nand_pdata.ecc_layout = &akita_oobinfo;

		spitz_nand_pdata.ecc_layout = &akita_ooblayout_ops;

	}



	platform_device_register(&spitz_nand_device);

drivers/mtd/nand/sharpsl.c

+1 −1
Original line number Diff line number Diff line
@@ -148,6 +148,7 @@ static int sharpsl_nand_probe(struct platform_device *pdev) 
	/* Link the private data with the MTD structure */

	mtd = nand_to_mtd(this);

	mtd->dev.parent = &pdev->dev;

	mtd_set_ooblayout(mtd, data->ecc_layout);



	platform_set_drvdata(pdev, sharpsl);
@@ -170,7 +171,6 @@ static int sharpsl_nand_probe(struct platform_device *pdev) 
	this->ecc.bytes = 3;

	this->ecc.strength = 1;

	this->badblock_pattern = data->badblock_pattern;

	this->ecc.layout = data->ecc_layout;

	this->ecc.hwctl = sharpsl_nand_enable_hwecc;

	this->ecc.calculate = sharpsl_nand_calculate_ecc;

	this->ecc.correct = nand_correct_data;

include/linux/mtd/sharpsl.h

+1 −1
Original line number Diff line number Diff line
@@ -14,7 +14,7 @@ 


struct sharpsl_nand_platform_data {

	struct nand_bbt_descr	*badblock_pattern;

	struct nand_ecclayout	*ecc_layout;

	const struct mtd_ooblayout_ops *ecc_layout;

	struct mtd_partition	*partitions;

	unsigned int		nr_partitions;

};