From: Bastian Hecht <hechtb@googlemail.com>
To: linux-mtd@lists.infradead.org, linux-sh@vger.kernel.org
Cc: Magnus Damm <magnus.damm@gmail.com>,
Laurent Pichart <laurent.pinchart@ideasonboard.com>
Subject: [PATCH 4/9] mtd: sh_flctl: Fix hardware ECC behaviour
Date: Fri, 20 Apr 2012 09:13:45 +0000 [thread overview]
Message-ID: <1334913230-23615-5-git-send-email-hechtb@gmail.com> (raw)
In-Reply-To: <1334913230-23615-1-git-send-email-hechtb@gmail.com>
The flctl uses 10 bytes ECC data for every 512 bytes sector. This patch
makes the controller write all 40 bytes instead of 10 bytes only.
Signed-off-by: Bastian Hecht <hechtb@gmail.com>
---
drivers/mtd/nand/sh_flctl.c | 30 +++++++-----------------------
1 files changed, 7 insertions(+), 23 deletions(-)
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 411d783..c16479c 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -427,30 +427,20 @@ static void execmd_read_page_sector(struct mtd_info *mtd, int page_addr)
static void execmd_read_oob(struct mtd_info *mtd, int page_addr)
{
struct sh_flctl *flctl = mtd_to_flctl(mtd);
+ int page_sectors = flctl->page_size ? 4 : 1;
+ int i;
set_cmd_regs(mtd, NAND_CMD_READ0,
(NAND_CMD_READSTART << 8) | NAND_CMD_READ0);
empty_fifo(flctl);
- if (flctl->page_size) {
- int i;
- /* In case that the page size is 2k */
- for (i = 0; i < 16 * 3; i++)
- flctl->done_buff[i] = 0xFF;
-
- set_addr(mtd, 3 * 528 + 512, page_addr);
- writel(16, FLDTCNTR(flctl));
- start_translation(flctl);
- read_fiforeg(flctl, 16, 16 * 3);
- wait_completion(flctl);
- } else {
- /* In case that the page size is 512b */
- set_addr(mtd, 512, page_addr);
+ for (i = 0; i < page_sectors; i++) {
+ set_addr(mtd, (512 + 16) * i + 512 , page_addr);
writel(16, FLDTCNTR(flctl));
start_translation(flctl);
- read_fiforeg(flctl, 16, 0);
+ read_fiforeg(flctl, 16, 16 * i);
wait_completion(flctl);
}
}
@@ -495,18 +485,12 @@ static void execmd_write_oob(struct mtd_info *mtd)
int page_addr = flctl->seqin_page_addr;
int sector, page_sectors;
- if (flctl->page_size) {
- sector = 3;
- page_sectors = 4;
- } else {
- sector = 0;
- page_sectors = 1;
- }
+ page_sectors = flctl->page_size ? 4 : 1;
set_cmd_regs(mtd, NAND_CMD_PAGEPROG,
(NAND_CMD_PAGEPROG << 8) | NAND_CMD_SEQIN);
- for (; sector < page_sectors; sector++) {
+ for (sector = 0; sector < page_sectors; sector++) {
empty_fifo(flctl);
set_addr(mtd, sector * 528 + 512, page_addr);
writel(16, FLDTCNTR(flctl)); /* set read size */
--
1.7.5.4
next prev parent reply other threads:[~2012-04-20 9:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-20 9:13 [PATCH 0/9] sh_flctl hardware ECC mode cleanup Bastian Hecht
2012-04-20 9:13 ` [PATCH 1/9] mtd: sh_flctl: Add support for error IRQ Bastian Hecht
2012-04-21 14:29 ` Laurent Pinchart
2012-04-23 8:41 ` Bastian Hecht
2012-04-20 9:13 ` [PATCH 2/9] ARM: sh-mobile: mackerel: Add error IRQ resource Bastian Hecht
2012-04-21 14:30 ` Laurent Pinchart
2012-04-23 8:43 ` Bastian Hecht
2012-04-20 9:13 ` [PATCH 3/9] mtd: sh_flctl: Use different OOB layout Bastian Hecht
2012-04-21 14:41 ` Laurent Pinchart
2012-04-23 8:51 ` Bastian Hecht
2012-04-20 9:13 ` Bastian Hecht [this message]
2012-04-20 9:13 ` [PATCH 5/9] mtd: sh_flctl: Simplify the hardware ecc page read/write Bastian Hecht
2012-04-20 9:13 ` [PATCH 6/9] mtd: sh_flctl: Group sector accesses into a single transfer Bastian Hecht
2012-04-20 9:13 ` [PATCH 7/9] mtd: sh_flctl: Restructure the hardware ECC handling Bastian Hecht
2012-04-20 9:13 ` [PATCH 8/9] mtd: sh_flctl: Use user oob data in hardware ECC mode Bastian Hecht
2012-04-21 15:00 ` Laurent Pinchart
2012-04-23 9:05 ` Bastian Hecht
2012-04-23 9:36 ` Bastian Hecht
2012-04-24 9:33 ` Laurent Pinchart
2012-04-25 4:01 ` Brian Norris
2012-04-25 13:26 ` Bastian Hecht
2012-04-20 9:13 ` [PATCH 9/9] ARM: sh-mobile: mackerel: Use hardware error correction Bastian Hecht
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