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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 09:03:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 09:03:12 -0700
commit2be508d847392e431759e370d21cea9412848758 (patch)
treebe5e00a4d7be4ef353ffe4d550fb80a251d321c3 /drivers/mtd/nand/atmel_nand.c
parent01e8ef11bc1a74e65678ed55795f59266d4add01 (diff)
parent8a1a6272057e2ad90ab531a70330165888866e60 (diff)
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (69 commits) Revert "[MTD] m25p80.c code cleanup" [MTD] [NAND] GPIO driver depends on ARM... for now. [MTD] [NAND] sh_flctl: fix compile error [MTD] [NOR] AT49BV6416 has swapped erase regions [MTD] [NAND] GPIO NAND flash driver [MTD] cmdlineparts documentation change - explain where mtd-id comes from [MTD] cfi_cmdset_0002.c: Add Macronix CFI V1.0 TopBottom detection [MTD] [NAND] Fix compilation warnings in drivers/mtd/nand/cs553x_nand.c [JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flash [MTD] mtdoops: Fix a bug where block may not be erased [MTD] mtdoops: Add a magic number to logged kernel oops [MTD] mtdoops: Fix an off by one error [JFFS2] Correct parameter names of jffs2_compress() in comments [MTD] [NAND] sh_flctl: add support for Renesas SuperH FLCTL [MTD] [NAND] Bug on atmel_nand HW ECC : OOB info not correctly written [MTD] [MAPS] Remove unused variable after ROM API cleanup. [MTD] m25p80.c extended jedec support (v2) [MTD] remove unused mtd parameter in of_mtd_parse_partitions() [MTD] [NAND] remove dead Kconfig associated with !CONFIG_PPC_MERGE [MTD] [NAND] driver extension to support NAND on TQM85xx modules ...
Diffstat (limited to 'drivers/mtd/nand/atmel_nand.c')
-rw-r--r--drivers/mtd/nand/atmel_nand.c58
1 files changed, 6 insertions, 52 deletions
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 3387e0d5076..c98c1570a40 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -174,48 +174,6 @@ static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len)
}
/*
- * write oob for small pages
- */
-static int atmel_nand_write_oob_512(struct mtd_info *mtd,
- struct nand_chip *chip, int page)
-{
- int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
- int eccsize = chip->ecc.size, length = mtd->oobsize;
- int len, pos, status = 0;
- const uint8_t *bufpoi = chip->oob_poi;
-
- pos = eccsize + chunk;
-
- chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page);
- len = min_t(int, length, chunk);
- chip->write_buf(mtd, bufpoi, len);
- bufpoi += len;
- length -= len;
- if (length > 0)
- chip->write_buf(mtd, bufpoi, length);
-
- chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
- status = chip->waitfunc(mtd, chip);
-
- return status & NAND_STATUS_FAIL ? -EIO : 0;
-
-}
-
-/*
- * read oob for small pages
- */
-static int atmel_nand_read_oob_512(struct mtd_info *mtd,
- struct nand_chip *chip, int page, int sndcmd)
-{
- if (sndcmd) {
- chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
- sndcmd = 0;
- }
- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
- return sndcmd;
-}
-
-/*
* Calculate HW ECC
*
* function called after a write
@@ -235,14 +193,14 @@ static int atmel_nand_calculate(struct mtd_info *mtd,
/* get the first 2 ECC bytes */
ecc_value = ecc_readl(host->ecc, PR);
- ecc_code[eccpos[0]] = ecc_value & 0xFF;
- ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF;
+ ecc_code[0] = ecc_value & 0xFF;
+ ecc_code[1] = (ecc_value >> 8) & 0xFF;
/* get the last 2 ECC bytes */
ecc_value = ecc_readl(host->ecc, NPR) & ATMEL_ECC_NPARITY;
- ecc_code[eccpos[2]] = ecc_value & 0xFF;
- ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF;
+ ecc_code[2] = ecc_value & 0xFF;
+ ecc_code[3] = (ecc_value >> 8) & 0xFF;
return 0;
}
@@ -476,14 +434,12 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
res = -EIO;
goto err_ecc_ioremap;
}
- nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME;
+ nand_chip->ecc.mode = NAND_ECC_HW;
nand_chip->ecc.calculate = atmel_nand_calculate;
nand_chip->ecc.correct = atmel_nand_correct;
nand_chip->ecc.hwctl = atmel_nand_hwctl;
nand_chip->ecc.read_page = atmel_nand_read_page;
nand_chip->ecc.bytes = 4;
- nand_chip->ecc.prepad = 0;
- nand_chip->ecc.postpad = 0;
}
nand_chip->chip_delay = 20; /* 20us command delay time */
@@ -514,7 +470,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
goto err_scan_ident;
}
- if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) {
+ if (nand_chip->ecc.mode == NAND_ECC_HW) {
/* ECC is calculated for the whole page (1 step) */
nand_chip->ecc.size = mtd->writesize;
@@ -522,8 +478,6 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
switch (mtd->writesize) {
case 512:
nand_chip->ecc.layout = &atmel_oobinfo_small;
- nand_chip->ecc.read_oob = atmel_nand_read_oob_512;
- nand_chip->ecc.write_oob = atmel_nand_write_oob_512;
ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_528);
break;
case 1024: