MIPS: Alchemy: add helpers to access static memory ctrl registers.

This patch changes the static memory controller registers to offsets
from base, prefixes them with AU1000_ to avoid silent failures due to
changed addresses and introduces helpers to access them.

No functional changes, comparing assembly of a few select functions shows
no differences.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7463/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c
index bc5c518828d2..6cece6e7ee6b 100644
--- a/drivers/mtd/nand/au1550nd.c
+++ b/drivers/mtd/nand/au1550nd.c
@@ -223,12 +223,12 @@ static void au1550_hwcontrol(struct mtd_info *mtd, int cmd)
 
         case NAND_CTL_SETNCE:
                 /* assert (force assert) chip enable */
-                au_writel((1 << (4 + ctx->cs)), MEM_STNDCTL);
+                alchemy_wrsmem((1 << (4 + ctx->cs)), AU1000_MEM_STNDCTL);
                 break;
 
         case NAND_CTL_CLRNCE:
                 /* deassert chip enable */
-                au_writel(0, MEM_STNDCTL);
+                alchemy_wrsmem(0, AU1000_MEM_STNDCTL);
                 break;
         }
 
@@ -240,9 +240,7 @@ static void au1550_hwcontrol(struct mtd_info *mtd, int cmd)
 
 int au1550_device_ready(struct mtd_info *mtd)
 {
-        int ret = (au_readl(MEM_STSTAT) & 0x1) ? 1 : 0;
-        au_sync();
-        return ret;
+        return (alchemy_rdsmem(AU1000_MEM_STSTAT) & 0x1) ? 1 : 0;
 }
 
 /**