Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
On Thu, Nov 4, 2010 at 3:02 AM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Wednesday, November 03, 2010 6:33 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; Vimal Singh; artem.bityuts...@nokia.com Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file On Mon, Sep 27, 2010 at 5:11 PM, Sukumar Ghorai s-gho...@ti.com wrote: This patch makes it possible to select sw or hw (different layout options) ecc scheme supported by omap nand driver. And hw ecc layout selected for sdp and zoom boards, by default. Signed-off-by: Vimal Singh vimalsi...@ti.com Signed-off-by: Sukumar Ghorai s-gho...@ti.com Any news on this? Commit 2c01946c accidentally (?) enabled hardware ECC and now my board is broken, as the driver always used sw ecc and my NAND partitions are formatted accordingly. We should at least switch the default back to sw ecc, don't you think? [Ghorai] 1. which board you are working. 2. and the default layout is the same as previous + board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT; OMAP3 pandora. What I wanted to say is that current mainline code has hw ECC forced which is wrong for some boards, and this patch did not make into last merge window, so NAND is broken. It would be good to take this patch out of larger series you sent earlier and resend as a fix for -rc1, so that NAND works on 2.6.37. It's not too large and should probably be ok for -rc2. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
-Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Thursday, November 04, 2010 3:22 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; artem.bityuts...@nokia.com; Vimal Singh; Tony Lindgren Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file On Thu, Nov 4, 2010 at 3:02 AM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Wednesday, November 03, 2010 6:33 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux- arm- ker...@lists.infradead.org; Vimal Singh; artem.bityuts...@nokia.com Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file On Mon, Sep 27, 2010 at 5:11 PM, Sukumar Ghorai s-gho...@ti.com wrote: This patch makes it possible to select sw or hw (different layout options) ecc scheme supported by omap nand driver. And hw ecc layout selected for sdp and zoom boards, by default. Signed-off-by: Vimal Singh vimalsi...@ti.com Signed-off-by: Sukumar Ghorai s-gho...@ti.com Any news on this? Commit 2c01946c accidentally (?) enabled hardware ECC and now my board is broken, as the driver always used sw ecc and my NAND partitions are formatted accordingly. We should at least switch the default back to sw ecc, don't you think? [Ghorai] 1. which board you are working. 2. and the default layout is the same as previous + board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT; OMAP3 pandora. What I wanted to say is that current mainline code has hw ECC forced which is wrong for some boards, and this patch did not make into last merge window, so NAND is broken. It would be good to take this patch out of larger series you sent earlier and resend as a fix for -rc1, so that NAND works on 2.6.37. It's not too large and should probably be ok for -rc2. [Ghorai] There is an additional patch I will send (with this series by next week) to select the ECC from board file, such that different board file can select the different ECC method. 1. This is mainly for OMAP3630 onwards and has been aligned with many customers to use the hw ecc. 2. I did not understand how it's not working, would you please explain again? If you apply the series then it's storing the same ecc value in different location and generated from h/w module. File: arch/arm/mach-omap2/board-flash.c board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT; change to - board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_HW; - to switch back to s/w generated ECC stores at end of the spare area. 3. This patches are not upstream yet; send me the git-link you referring that these patches are available in 2.6.37? -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
On Thu, Nov 4, 2010 at 12:15 PM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] OMAP3 pandora. What I wanted to say is that current mainline code has hw ECC forced which is wrong for some boards, and this patch did not make into last merge window, so NAND is broken. It would be good to take this patch out of larger series you sent earlier and resend as a fix for -rc1, so that NAND works on 2.6.37. It's not too large and should probably be ok for -rc2. [Ghorai] There is an additional patch I will send (with this series by next week) to select the ECC from board file, such that different board file can select the different ECC method. 1. This is mainly for OMAP3630 onwards and has been aligned with many customers to use the hw ecc. 2. I did not understand how it's not working, would you please explain again? If you apply the series then it's storing the same ecc value in different location and generated from h/w module. It most likely works (need to test more), I was just complaining it's not upstream and sw ecc is broken on both 2.6.36 and 2.6.37. 3. This patches are not upstream yet; send me the git-link you referring that these patches are available in 2.6.37? Correct, they are not upstream, so that's why suggest sending smaller fix patch for 2.6.37-rc2, so that sw ecc works on 2.6.37. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
-Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Thursday, November 04, 2010 4:27 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; artem.bityuts...@nokia.com; Vimal Singh; Tony Lindgren Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file On Thu, Nov 4, 2010 at 12:15 PM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] OMAP3 pandora. What I wanted to say is that current mainline code has hw ECC forced which is wrong for some boards, and this patch did not make into last merge window, so NAND is broken. It would be good to take this patch out of larger series you sent earlier and resend as a fix for -rc1, so that NAND works on 2.6.37. It's not too large and should probably be ok for -rc2. [Ghorai] There is an additional patch I will send (with this series by next week) to select the ECC from board file, such that different board file can select the different ECC method. 1. This is mainly for OMAP3630 onwards and has been aligned with many customers to use the hw ecc. 2. I did not understand how it's not working, would you please explain again? If you apply the series then it's storing the same ecc value in different location and generated from h/w module. It most likely works (need to test more), I was just complaining it's not upstream and sw ecc is broken on both 2.6.36 and 2.6.37. [Ghorai] In 2.6.36, it's a s/w ecc by default and working in all platforms like - omap3430 SDP, zoom2, 3630SDP, ZOOM3. So please explain more when you found that - sw ecc is broken on both 2.6.36 3. This patches are not upstream yet; send me the git-link you referring that these patches are available in 2.6.37? Correct, they are not upstream, so that's why suggest sending smaller fix patch for 2.6.37-rc2, so that sw ecc works on 2.6.37. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
[Ghorai] In 2.6.36, it's a s/w ecc by default and working in all platforms like - omap3430 SDP, zoom2, 3630SDP, ZOOM3. So please explain more when you found that - sw ecc is broken on both 2.6.36 It doesn't for me, see http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=513e0a76a4a73866d52bba8151e43556a3b30a54;hb=f6f94e2ab1b33f0082ac22d71f66385a60d8157f This is omap NAND driver at v2.6.36 tag, and it has CONFIG_MTD_NAND_OMAP_HWECC forced. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
-Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Thursday, November 04, 2010 4:42 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; artem.bityuts...@nokia.com; Vimal Singh; Tony Lindgren Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file [Ghorai] In 2.6.36, it's a s/w ecc by default and working in all platforms like - omap3430 SDP, zoom2, 3630SDP, ZOOM3. So please explain more when you found that - sw ecc is broken on both 2.6.36 It doesn't for me, see http://git.kernel.org/?p=linux/kernel/git/torvalds/linux- 2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=513e0a76a4a73866d52bba8151e435 56a3b30a54;hb=f6f94e2ab1b33f0082ac22d71f66385a60d8157f This is omap NAND driver at v2.6.36 tag, and it has CONFIG_MTD_NAND_OMAP_HWECC forced. [Ghorai] This is the same old code since log. And this portion of code not touched for 2.6.36. And please let me know what kind of problem you are facing when you using 2.6.36; also let me know how to reproduce, I can check in my platform too. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
On Thu, Nov 4, 2010 at 1:15 PM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Thursday, November 04, 2010 4:42 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; artem.bityuts...@nokia.com; Vimal Singh; Tony Lindgren Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file [Ghorai] In 2.6.36, it's a s/w ecc by default and working in all platforms like - omap3430 SDP, zoom2, 3630SDP, ZOOM3. So please explain more when you found that - sw ecc is broken on both 2.6.36 It doesn't for me, see http://git.kernel.org/?p=linux/kernel/git/torvalds/linux- 2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=513e0a76a4a73866d52bba8151e435 56a3b30a54;hb=f6f94e2ab1b33f0082ac22d71f66385a60d8157f This is omap NAND driver at v2.6.36 tag, and it has CONFIG_MTD_NAND_OMAP_HWECC forced. [Ghorai] This is the same old code since log. And this portion of code not touched for 2.6.36. And please let me know what kind of problem you are facing when you using 2.6.36; also let me know how to reproduce, I can check in my platform too. It has changed in 2.5.36, take a look how it was in 2.6.35, when it worked for me: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=ee87325c7712a84bbc683f93014c9901f337;hb=9fe6206f400646a2322096b56c59891d530e8d51 notice how 2.5.36 has CONFIG_MTD_NAND_OMAP_HWECC defined and 2.6.35 doesn't. The test case is simple: format and use NAND on 2.6.35 or earlier, works fine. upgrade to 2.6.36 or 2.6.37-rc1 and try to mount the same NAND partition - lots of ECC errors. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
-Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Thursday, November 04, 2010 5:03 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; artem.bityuts...@nokia.com; Vimal Singh; Tony Lindgren Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file On Thu, Nov 4, 2010 at 1:15 PM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Thursday, November 04, 2010 4:42 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux- arm- ker...@lists.infradead.org; artem.bityuts...@nokia.com; Vimal Singh; Tony Lindgren Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file [Ghorai] In 2.6.36, it's a s/w ecc by default and working in all platforms like - omap3430 SDP, zoom2, 3630SDP, ZOOM3. So please explain more when you found that - sw ecc is broken on both 2.6.36 It doesn't for me, see http://git.kernel.org/?p=linux/kernel/git/torvalds/linux- 2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=513e0a76a4a73866d52bba8151e435 56a3b30a54;hb=f6f94e2ab1b33f0082ac22d71f66385a60d8157f This is omap NAND driver at v2.6.36 tag, and it has CONFIG_MTD_NAND_OMAP_HWECC forced. [Ghorai] This is the same old code since log. And this portion of code not touched for 2.6.36. And please let me know what kind of problem you are facing when you using 2.6.36; also let me know how to reproduce, I can check in my platform too. It has changed in 2.5.36, take a look how it was in 2.6.35, when it worked for me: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux- 2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=ee87325c7712a84bbc683f9301 4c9901f337;hb=9fe6206f400646a2322096b56c59891d530e8d51 notice how 2.5.36 has CONFIG_MTD_NAND_OMAP_HWECC defined and 2.6.35 doesn't. The test case is simple: format and use NAND on 2.6.35 or earlier, works fine. upgrade to 2.6.36 or 2.6.37-rc1 and try to mount the same NAND partition - lots of ECC errors. [Ghorai] I tested this and working fine in zoom3. And as you mentioned there may be an issue we need to identify, So remove this #define form 2.6.36 and let me know the test result. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
On Thu, Nov 4, 2010 at 2:52 PM, Ghorai, Sukumar s-gho...@ti.com wrote: -Original Message- It has changed in 2.5.36, take a look how it was in 2.6.35, when it worked for me: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux- 2.6.git;a=blob;f=drivers/mtd/nand/omap2.c;h=ee87325c7712a84bbc683f9301 4c9901f337;hb=9fe6206f400646a2322096b56c59891d530e8d51 notice how 2.5.36 has CONFIG_MTD_NAND_OMAP_HWECC defined and 2.6.35 doesn't. The test case is simple: format and use NAND on 2.6.35 or earlier, works fine. upgrade to 2.6.36 or 2.6.37-rc1 and try to mount the same NAND partition - lots of ECC errors. [Ghorai] I tested this and working fine in zoom3. And as you mentioned there may be an issue we need to identify, So remove this #define form 2.6.36 and let me know the test result. After removing #define it works, but only without CONFIG_MTD_NAND_OMAP_PREFETCH. With prefetch enabled, sub-page reads return ECC errors, for example: nanddump -p -l 1024 -s 512 /dev/mtd3 ECC: 3 uncorrectable bitflip(s) at offset 0x0200 nanddump -p -l 1024 -s 0 /dev/mtd3 nanddump -p -l 1024 -s 1024 /dev/mtd3 works ok. Sub-pages need to be working for UBI, my NAND partitions are formatted with UBIFS. -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
On Mon, Sep 27, 2010 at 5:11 PM, Sukumar Ghorai s-gho...@ti.com wrote: This patch makes it possible to select sw or hw (different layout options) ecc scheme supported by omap nand driver. And hw ecc layout selected for sdp and zoom boards, by default. Signed-off-by: Vimal Singh vimalsi...@ti.com Signed-off-by: Sukumar Ghorai s-gho...@ti.com Any news on this? Commit 2c01946c accidentally (?) enabled hardware ECC and now my board is broken, as the driver always used sw ecc and my NAND partitions are formatted accordingly. We should at least switch the default back to sw ecc, don't you think? -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
-Original Message- From: Grazvydas Ignotas [mailto:nota...@gmail.com] Sent: Wednesday, November 03, 2010 6:33 PM To: Ghorai, Sukumar Cc: linux-omap@vger.kernel.org; linux-...@lists.infradead.org; linux-arm- ker...@lists.infradead.org; Vimal Singh; artem.bityuts...@nokia.com Subject: Re: [PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file On Mon, Sep 27, 2010 at 5:11 PM, Sukumar Ghorai s-gho...@ti.com wrote: This patch makes it possible to select sw or hw (different layout options) ecc scheme supported by omap nand driver. And hw ecc layout selected for sdp and zoom boards, by default. Signed-off-by: Vimal Singh vimalsi...@ti.com Signed-off-by: Sukumar Ghorai s-gho...@ti.com Any news on this? Commit 2c01946c accidentally (?) enabled hardware ECC and now my board is broken, as the driver always used sw ecc and my NAND partitions are formatted accordingly. We should at least switch the default back to sw ecc, don't you think? [Ghorai] 1. which board you are working. 2. and the default layout is the same as previous + board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT; -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH RESEND v5 4/5] omap: nand: ecc layout select from board file
This patch makes it possible to select sw or hw (different layout options)
ecc scheme supported by omap nand driver. And hw ecc layout selected for
sdp and zoom boards, by default.
Signed-off-by: Vimal Singh vimalsi...@ti.com
Signed-off-by: Sukumar Ghorai s-gho...@ti.com
---
arch/arm/mach-omap2/board-flash.c |1 +
arch/arm/plat-omap/include/plat/gpmc.h |7 +++
arch/arm/plat-omap/include/plat/nand.h |2 ++
drivers/mtd/nand/omap2.c | 29 +
4 files changed, 23 insertions(+), 16 deletions(-)
diff --git a/arch/arm/mach-omap2/board-flash.c
b/arch/arm/mach-omap2/board-flash.c
index 2355e4a..ecd41ae 100644
--- a/arch/arm/mach-omap2/board-flash.c
+++ b/arch/arm/mach-omap2/board-flash.c
@@ -144,6 +144,7 @@ __init board_nand_init(struct mtd_partition *nand_parts, u8
nr_parts, u8 cs)
board_nand_data.cs = cs;
board_nand_data.parts = nand_parts;
board_nand_data.nr_parts= nr_parts;
+ 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..54902d8 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 5e69463..d5b6fc6 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
struct omap_nand_platform_data {
@@ -23,6 +24,7 @@ struct omap_nand_platform_data {
int gpmc_irq;
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 5ac7f7c..3fd9ee0 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -7,7 +7,6 @@
* 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
@@ -659,8 +658,6 @@ 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
@@ -880,8 +877,6 @@ 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
@@ -1059,17 +1054,19 @@ static int __devinit omap_nand_probe(struct
platform_device *pdev)
}
info-nand.verify_buf = omap_verify_buf;
-#ifdef CONFIG_MTD_NAND_OMAP_HWECC
- info-nand.ecc.bytes= 3;
- info-nand.ecc.size = 512;
- info-nand.ecc.calculate= omap_calculate_ecc;
- info-nand.ecc.hwctl= omap_enable_hwecc;
- info-nand.ecc.correct = omap_correct_data;
- info-nand.ecc.mode = NAND_ECC_HW;
-
-#else
- info-nand.ecc.mode = NAND_ECC_SOFT;
-#endif
+ /* selsect the ecc type */
+ if ((pdata-ecc_opt == OMAP_ECC_HAMMING_CODE_DIFF_LAYOUT) ||
+ (pdata-ecc_opt == OMAP_ECC_HAMMING_CODE_HW)) {
+ info-nand.ecc.bytes= 3;
+ info-nand.ecc.size = 512;
+ info-nand.ecc.calculate= omap_calculate_ecc;
+ info-nand.ecc.hwctl= omap_enable_hwecc;
+ info-nand.ecc.correct = omap_correct_data;
+ info-nand.ecc.mode = NAND_ECC_HW;
+
+ } else if (pdata-ecc_opt == OMAP_ECC_HAMMING_CODE_SW) {
+ info-nand.ecc.mode = NAND_ECC_SOFT;
+ }
/* DIP switches on some boards change between 8 and 16 bit
* bus widths for flash. Try the other width if the first try fails.
--
1.7.0.4
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