mtd: add on-flash BBT support for Atmel NAND driver

Just add a new on-flash-bbt module parameter.

Signed-off-by: Simon Polette <spolette@adetelgroup.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 47a33ce..2802992 100644 (file)
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -24,6 +24,7 @@
 
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/moduleparam.h>
 #include <linux/platform_device.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
@@ -47,6 +48,9 @@
 #define no_ecc         0
 #endif
 
+static int on_flash_bbt = 0;
+module_param(on_flash_bbt, int, 0);
+
 /* Register access macros */
 #define ecc_readl(add, reg)                            \
        __raw_readl(add + ATMEL_ECC_##reg)
@@ -459,12 +463,17 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
 
        if (host->board->det_pin) {
                if (gpio_get_value(host->board->det_pin)) {
-                       printk("No SmartMedia card inserted.\n");
+                       printk(KERN_INFO "No SmartMedia card inserted.\n");
                        res = ENXIO;
                        goto err_no_card;
                }
        }
 
+       if (on_flash_bbt) {
+               printk(KERN_INFO "atmel_nand: Use On Flash BBT\n");
+               nand_chip->options |= NAND_USE_FLASH_BBT;
+       }
+
        /* first scan to find the device and get the page size */
        if (nand_scan_ident(mtd, 1)) {
                res = -ENXIO;