From 65df9d63eaee02c25e879b33dd42aceb78e57842 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 28 Jul 2013 17:59:51 +0200 Subject: [PATCH 16/36] MTD: lantiq: xway: add missing write_buf and read_buf to nand driver Signed-off-by: John Crispin --- drivers/mtd/nand/xway_nand.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) --- a/drivers/mtd/nand/xway_nand.c +++ b/drivers/mtd/nand/xway_nand.c @@ -136,6 +136,32 @@ static unsigned char xway_read_byte(stru return ret; } +static void xway_read_buf(struct mtd_info *mtd, u_char *buf, int len) +{ + struct nand_chip *this = mtd->priv; + unsigned long nandaddr = (unsigned long) this->IO_ADDR_R; + unsigned long flags; + int i; + + spin_lock_irqsave(&ebu_lock, flags); + for (i = 0; i < len; i++) + buf[i] = ltq_r8((void __iomem *)(nandaddr | NAND_READ_DATA)); + spin_unlock_irqrestore(&ebu_lock, flags); +} + +static void xway_write_buf(struct mtd_info *mtd, const u_char *buf, int len) +{ + struct nand_chip *this = mtd->priv; + unsigned long nandaddr = (unsigned long) this->IO_ADDR_W; + unsigned long flags; + int i; + + spin_lock_irqsave(&ebu_lock, flags); + for (i = 0; i < len; i++) + ltq_w8(buf[i], (void __iomem *)(nandaddr | NAND_WRITE_DATA)); + spin_unlock_irqrestore(&ebu_lock, flags); +} + static int xway_nand_probe(struct platform_device *pdev) { struct nand_chip *this = platform_get_drvdata(pdev); @@ -181,6 +207,8 @@ static struct platform_nand_data xway_na .dev_ready = xway_dev_ready, .select_chip = xway_select_chip, .read_byte = xway_read_byte, + .read_buf = xway_read_buf, + .write_buf = xway_write_buf, } };