mtd: OneNAND: Samsung SoCs use own chip_probe function
Kyungmin Park [Fri, 28 May 2010 02:15:35 +0000 (11:15 +0900)]
Samsung SoCs use own chip_probe function.
Don't touch the memory configuration at probe time.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/onenand/samsung.c

index 2750317..cb443af 100644 (file)
@@ -630,6 +630,12 @@ normal:
        return 0;
 }
 
+static int s5pc110_chip_probe(struct mtd_info *mtd)
+{
+       /* Now just return 0 */
+       return 0;
+}
+
 static int s3c_onenand_bbt_wait(struct mtd_info *mtd, int state)
 {
        unsigned int flags = INT_ACT | LOAD_CMP;
@@ -757,6 +763,7 @@ static void s3c_onenand_setup(struct mtd_info *mtd)
                /* Use generic onenand functions */
                onenand->cmd_map = s5pc1xx_cmd_map;
                this->read_bufferram = s5pc110_read_bufferram;
+               this->chip_probe = s5pc110_chip_probe;
                return;
        } else {
                BUG();
@@ -781,7 +788,6 @@ static int s3c_onenand_probe(struct platform_device *pdev)
        struct mtd_info *mtd;
        struct resource *r;
        int size, err;
-       unsigned long onenand_ctrl_cfg = 0;
 
        pdata = pdev->dev.platform_data;
        /* No need to check pdata. the platform data is optional */
@@ -900,14 +906,6 @@ static int s3c_onenand_probe(struct platform_device *pdev)
                }
 
                onenand->phys_base = onenand->base_res->start;
-
-               onenand_ctrl_cfg = readl(onenand->dma_addr + 0x100);
-               if ((onenand_ctrl_cfg & ONENAND_SYS_CFG1_SYNC_WRITE) &&
-                   onenand->dma_addr)
-                       writel(onenand_ctrl_cfg & ~ONENAND_SYS_CFG1_SYNC_WRITE,
-                                       onenand->dma_addr + 0x100);
-               else
-                       onenand_ctrl_cfg = 0;
        }
 
        if (onenand_scan(mtd, 1)) {
@@ -915,10 +913,7 @@ static int s3c_onenand_probe(struct platform_device *pdev)
                goto scan_failed;
        }
 
-       if (onenand->type == TYPE_S5PC110) {
-               if (onenand_ctrl_cfg && onenand->dma_addr)
-                       writel(onenand_ctrl_cfg, onenand->dma_addr + 0x100);
-       } else {
+       if (onenand->type != TYPE_S5PC110) {
                /* S3C doesn't handle subpage write */
                mtd->subpage_sft = 0;
                this->subpagesize = mtd->writesize;