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

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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: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Hauke Mehrtens 2016-06-20 23:32:13 +02:00 committed by Boris Brezillon
parent ddbed9c211
commit 250d45eb82
1 changed files with 18 additions and 0 deletions
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18
drivers/mtd/nand/xway_nand.c
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@ -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;