diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2016-06-20 23:32:13 +0200 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-07-11 08:40:16 +0200 |
| commit | 250d45eb828a48bcfe0ef32ef861ea950e3483fc (patch) | |
| tree | 9931f780b5820dd71048b10c5aada8706070e276 /drivers/mtd | |
| parent | mtd: nand: xway: extract read and write function (diff) | |
| download | linux-250d45eb828a48bcfe0ef32ef861ea950e3483fc.tar.xz linux-250d45eb828a48bcfe0ef32ef861ea950e3483fc.zip | |
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 <hauke@hauke-m.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/xway_nand.c | 18 |
1 files changed, 18 insertions, 0 deletions
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; |