[PATCH 5/6] MTD: xway: add missing write_buf and read_buf to nand driver
Hauke Mehrtens
hauke at hauke-m.de
Sun Jun 5 14:20:08 PDT 2016
From: John Crispin <john at phrozen.org>
Signed-off-by: John Crispin <john at phrozen.org>
Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
drivers/mtd/nand/xway_nand.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/mtd/nand/xway_nand.c b/drivers/mtd/nand/xway_nand.c
index d44e00d..bc4018e 100644
--- a/drivers/mtd/nand/xway_nand.c
+++ b/drivers/mtd/nand/xway_nand.c
@@ -146,6 +146,32 @@ static unsigned char xway_read_byte(struct mtd_info *mtd)
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);
@@ -187,6 +213,8 @@ static struct platform_nand_data xway_nand_data = {
.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,
}
};
--
2.8.1
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