diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2016-06-20 23:32:10 +0200 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-07-11 08:40:15 +0200 |
| commit | 44772fa5ec4162ef133f1294299d1e1ada7d2d11 (patch) | |
| tree | df7bc14186a3826d26ff6fb3e07fa8d04ae7d1fb /drivers/mtd | |
| parent | mtd: nand: xway: Avoid messing up with IO_ADDR_W in ->cmd_ctrl() (diff) | |
| download | linux-44772fa5ec4162ef133f1294299d1e1ada7d2d11.tar.xz linux-44772fa5ec4162ef133f1294299d1e1ada7d2d11.zip | |
mtd: nand: xway: remove manual reset
nand_scan() already resets the NAND flash chip, this driver does not
have to call it manually. The xway_reset_chip() functions does the same
as the normal NAND reset function. The waiting for the NAND_WAIT_WR_C
is done in xway_cmd_ctrl().
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 | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/drivers/mtd/nand/xway_nand.c b/drivers/mtd/nand/xway_nand.c index 6028edbad644..ab93b3536877 100644 --- a/drivers/mtd/nand/xway_nand.c +++ b/drivers/mtd/nand/xway_nand.c @@ -35,7 +35,6 @@ #define NAND_CMD_CS BIT(4) /* chip select */ #define NAND_CMD_SE BIT(5) /* spare area access latch */ #define NAND_CMD_WP BIT(6) /* write protect */ -#define NAND_WRITE_CMD_RESET 0xff #define NAND_WRITE_CMD (NAND_CMD_CS | NAND_CMD_CLE) #define NAND_WRITE_ADDR (NAND_CMD_CS | NAND_CMD_ALE) #define NAND_WRITE_DATA (NAND_CMD_CS) @@ -68,22 +67,6 @@ struct xway_nand_data { struct nand_chip chip; }; -static void xway_reset_chip(struct nand_chip *chip) -{ - unsigned long nandaddr = (unsigned long) chip->IO_ADDR_W; - unsigned long flags; - - nandaddr &= ~NAND_WRITE_ADDR; - nandaddr |= NAND_WRITE_CMD; - - /* finish with a reset */ - spin_lock_irqsave(&ebu_lock, flags); - writeb(NAND_WRITE_CMD_RESET, (void __iomem *) nandaddr); - while ((ltq_ebu_r32(EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0) - ; - spin_unlock_irqrestore(&ebu_lock, flags); -} - static void xway_select_chip(struct mtd_info *mtd, int chip) { @@ -199,9 +182,6 @@ static int xway_nand_probe(struct platform_device *pdev) | NAND_CON_SE_P | NAND_CON_WP_P | NAND_CON_PRE_P | cs_flag, EBU_NAND_CON); - /* finish with a reset */ - xway_reset_chip(&data->chip); - /* Scan to find existence of the device */ err = nand_scan(mtd, 1); if (err) |