Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 250d45eb authored by Hauke Mehrtens's avatar Hauke Mehrtens Committed by Boris Brezillon
Browse files

mtd: nand: xway: add missing write_buf and read_buf to nand driver 



This driver needs a special write_buf and read_buf function, because we
have to read from a specific address to tell the controller this is a
read from the nand controller.

Signed-off-by: default avatarHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
parent ddbed9c2

drivers/mtd/nand/xway_nand.c

+18 −0
Original line number Diff line number Diff line
@@ -129,6 +129,22 @@ static unsigned char xway_read_byte(struct mtd_info *mtd) 
	return xway_readb(mtd, NAND_READ_DATA);

}



static void xway_read_buf(struct mtd_info *mtd, u_char *buf, int len)

{

	int i;



	for (i = 0; i < len; i++)

		buf[i] = xway_readb(mtd, NAND_WRITE_DATA);

}



static void xway_write_buf(struct mtd_info *mtd, const u_char *buf, int len)

{

	int i;



	for (i = 0; i < len; i++)

		xway_writeb(mtd, NAND_WRITE_DATA, buf[i]);

}



/*

 * Probe for the NAND device.

 */
@@ -162,6 +178,8 @@ static int xway_nand_probe(struct platform_device *pdev) 
	data->chip.cmd_ctrl = xway_cmd_ctrl;

	data->chip.dev_ready = xway_dev_ready;

	data->chip.select_chip = xway_select_chip;

	data->chip.write_buf = xway_write_buf;

	data->chip.read_buf = xway_read_buf;

	data->chip.read_byte = xway_read_byte;

	data->chip.chip_delay = 30;