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Commit 6811c464 authored by Sascha Hauer's avatar Sascha Hauer Committed by Boris Brezillon
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mtd: nand: mxc: Add own write_page 



Now that we have our own read_page function add a write_page function
for consistency aswell. This can be a lot easier than the generic
function since we do not have to iterate over subpages but can write
the whole page at once. Also add write_page_raw and write_oob for
proper raw and oob write support.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@bootlin.com>
parent 5039fc9f

drivers/mtd/nand/mxc_nand.c

+47 −0
Original line number Diff line number Diff line
@@ -890,6 +890,50 @@ static int mxc_nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip, 
					     page);

}



static int mxc_nand_write_page(struct nand_chip *chip, const uint8_t *buf,

			       bool ecc, int page)

{

	struct mtd_info *mtd = nand_to_mtd(chip);

	struct mxc_nand_host *host = nand_get_controller_data(chip);



	host->devtype_data->enable_hwecc(chip, ecc);



	host->devtype_data->send_cmd(host, NAND_CMD_SEQIN, false);

	mxc_do_addr_cycle(mtd, 0, page);



	memcpy32_toio(host->main_area0, buf, mtd->writesize);

	copy_spare(mtd, false, chip->oob_poi);



	host->devtype_data->send_page(mtd, NFC_INPUT);

	host->devtype_data->send_cmd(host, NAND_CMD_PAGEPROG, true);

	mxc_do_addr_cycle(mtd, 0, page);



	return 0;

}



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

				   const uint8_t *buf, int oob_required,

				   int page)

{

	return mxc_nand_write_page(chip, buf, true, page);

}



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

				   const uint8_t *buf, int oob_required, int page)

{

	return mxc_nand_write_page(chip, buf, false, page);

}



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

			      int page)

{

	struct mxc_nand_host *host = nand_get_controller_data(chip);



	memset(host->data_buf, 0xff, mtd->writesize);



	return mxc_nand_write_page(chip, host->data_buf, false, page);

}



static int mxc_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,

				  u_char *ecc_code)

{
@@ -1904,6 +1948,9 @@ static int mxcnd_probe(struct platform_device *pdev) 
		this->ecc.read_page = mxc_nand_read_page;

		this->ecc.read_page_raw = mxc_nand_read_page_raw;

		this->ecc.read_oob = mxc_nand_read_oob;

		this->ecc.write_page = mxc_nand_write_page_ecc;

		this->ecc.write_page_raw = mxc_nand_write_page_raw;

		this->ecc.write_oob = mxc_nand_write_oob;

		this->ecc.calculate = mxc_nand_calculate_ecc;

		this->ecc.hwctl = mxc_nand_enable_hwecc;

		this->ecc.correct = host->devtype_data->correct_data;