[v6,6/7] omap: nand: ecc layout select from board file

Commit Message

Sukumar Ghorai Nov. 26, 2010, 3:34 p.m. UTC

None

Patch

diff --git a/arch/arm/mach-omap2/board-flash.c b/arch/arm/mach-omap2/board-flash.c
index 78abcd9..3340427 100644
--- a/arch/arm/mach-omap2/board-flash.c
+++ b/arch/arm/mach-omap2/board-flash.c
@@ -150,6 +150,7 @@  __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs)
 	if (cpu_is_omap3630())
 		board_nand_data.devsize = 1;
 
+	board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT;
 	board_nand_data.gpmc_irq = OMAP_GPMC_IRQ_BASE + cs;
 	gpmc_nand_init(&board_nand_data);
 }
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h
index fb82335..ca6e8db 100644
--- a/arch/arm/plat-omap/include/plat/gpmc.h
+++ b/arch/arm/plat-omap/include/plat/gpmc.h
@@ -86,6 +86,13 @@ 
 #define PREFETCH_FIFOTHRESHOLD_MAX	0x40
 #define PREFETCH_FIFOTHRESHOLD(val)	(val << 8)
 
+enum omap_ecc {
+	OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT = 0,
+		/* 1-bit s/w ecc and layout different from romcode */
+	OMAP_ECC_HAMMING_CODE_HW,/* 1-bit ecc, romcode layout */
+	OMAP_ECC_HAMMING_CODE_SW,/* 1-bit ecc, romcode layout */
+};
+
 /*
  * Note that all values in this struct are in nanoseconds, while
  * the register values are in gpmc_fck cycles.
diff --git a/arch/arm/plat-omap/include/plat/nand.h b/arch/arm/plat-omap/include/plat/nand.h
index ae5e053..d86d1ec 100644
--- a/arch/arm/plat-omap/include/plat/nand.h
+++ b/arch/arm/plat-omap/include/plat/nand.h
@@ -8,6 +8,7 @@ 
  * published by the Free Software Foundation.
  */
 
+#include <plat/gpmc.h>
 #include <linux/mtd/partitions.h>
 
 enum nand_io {
@@ -31,6 +32,7 @@  struct omap_nand_platform_data {
 	enum nand_io		xfer_type;
 	unsigned long		phys_base;
 	int			devsize;
+	enum omap_ecc           ecc_opt;
 };
 
 /* minimum size for IO mapping */
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index fea9f59..0937001 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -7,6 +7,7 @@ 
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#define CONFIG_MTD_NAND_OMAP_HWECC
 
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
@@ -618,8 +619,6 @@  static int omap_verify_buf(struct mtd_info *mtd, const u_char * buf, int len)
 	return 0;
 }
 
-#ifdef CONFIG_MTD_NAND_OMAP_HWECC
-
 /**
  * gen_true_ecc - This function will generate true ECC value
  * @ecc_buf: buffer to store ecc code
@@ -839,8 +838,6 @@  static void omap_enable_hwecc(struct mtd_info *mtd, int mode)
 	gpmc_enable_hwecc(info->gpmc_cs, mode, dev_width, info->nand.ecc.size);
 }
 
-#endif
-
 /**
  * omap_wait - wait until the command is done
  * @mtd: MTD device structure