From 250d45eb828a48bcfe0ef32ef861ea950e3483fc Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Mon, 20 Jun 2016 23:32:13 +0200 Subject: [PATCH] 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: Hauke Mehrtens Signed-off-by: Boris Brezillon --- drivers/mtd/nand/xway_nand.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/mtd/nand/xway_nand.c b/drivers/mtd/nand/xway_nand.c index 4cdef245f52d..429ba02fc0f5 100644 --- a/drivers/mtd/nand/xway_nand.c +++ b/drivers/mtd/nand/xway_nand.c @@ -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; -- 2.39.5