mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 02:29:01 +00:00
45 lines
1.4 KiB
Diff
45 lines
1.4 KiB
Diff
|
From b454cefd675fc1bd3d8c690c1bd1d8f4678e9922 Mon Sep 17 00:00:00 2001
|
||
|
|
From: John Crispin <blogic@openwrt.org>
|
||
|
|
Date: Sun, 28 Jul 2013 18:06:39 +0200
|
||
|
|
Subject: [PATCH 14/36] MTD: lantiq: xway: the latched command should be
|
||
|
|
persistent
|
||
|
|
|
||
|
|
Signed-off-by: John Crispin <blogic@openwrt.org>
|
||
|
|
---
|
||
|
|
drivers/mtd/nand/xway_nand.c | 12 ++++++------
|
||
|
|
1 file changed, 6 insertions(+), 6 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/mtd/nand/xway_nand.c
|
||
|
|
+++ b/drivers/mtd/nand/xway_nand.c
|
||
|
|
@@ -54,6 +54,8 @@
|
||
|
|
#define NAND_CON_CSMUX (1 << 1)
|
||
|
|
#define NAND_CON_NANDM 1
|
||
|
|
|
||
|
|
+static u32 xway_latchcmd;
|
||
|
|
+
|
||
|
|
static void xway_reset_chip(struct nand_chip *chip)
|
||
|
|
{
|
||
|
|
unsigned long nandaddr = (unsigned long) chip->IO_ADDR_W;
|
||
|
|
@@ -94,17 +96,15 @@ static void xway_cmd_ctrl(struct mtd_inf
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
if (ctrl & NAND_CTRL_CHANGE) {
|
||
|
|
- nandaddr &= ~(NAND_WRITE_CMD | NAND_WRITE_ADDR);
|
||
|
|
if (ctrl & NAND_CLE)
|
||
|
|
- nandaddr |= NAND_WRITE_CMD;
|
||
|
|
- else
|
||
|
|
- nandaddr |= NAND_WRITE_ADDR;
|
||
|
|
- this->IO_ADDR_W = (void __iomem *) nandaddr;
|
||
|
|
+ xway_latchcmd = NAND_WRITE_CMD;
|
||
|
|
+ else if (ctrl & NAND_ALE)
|
||
|
|
+ xway_latchcmd = NAND_WRITE_ADDR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (cmd != NAND_CMD_NONE) {
|
||
|
|
spin_lock_irqsave(&ebu_lock, flags);
|
||
|
|
- writeb(cmd, this->IO_ADDR_W);
|
||
|
|
+ writeb(cmd, (void __iomem *) (nandaddr | xway_latchcmd));
|
||
|
|
while ((ltq_ebu_r32(EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0)
|
||
|
|
;
|
||
|
|
spin_unlock_irqrestore(&ebu_lock, flags);
|