[MTD] NAND whitespace and formatting cleanup
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
parent
dcb0932884
commit
2c0a2bed92
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@ -10,7 +10,7 @@
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* http://www.linux-mtd.infradead.org/tech/nand.html
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*
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* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
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* 2002 Thomas Gleixner (tglx@linutronix.de)
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* 2002 Thomas Gleixner (tglx@linutronix.de)
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*
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* 02-08-2004 tglx: support for strange chips, which cannot auto increment
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* pages on read / read_oob
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@ -25,26 +25,30 @@
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* 05-19-2004 tglx: Basic support for Renesas AG-AND chips
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*
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* 09-24-2004 tglx: add support for hardware controllers (e.g. ECC) shared
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* among multiple independend devices. Suggestions and initial patch
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* from Ben Dooks <ben-mtd@fluff.org>
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* among multiple independend devices. Suggestions and initial
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* patch from Ben Dooks <ben-mtd@fluff.org>
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*
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* 12-05-2004 dmarlin: add workaround for Renesas AG-AND chips "disturb" issue.
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* Basically, any block not rewritten may lose data when surrounding blocks
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* are rewritten many times. JFFS2 ensures this doesn't happen for blocks
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* it uses, but the Bad Block Table(s) may not be rewritten. To ensure they
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* do not lose data, force them to be rewritten when some of the surrounding
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* blocks are erased. Rather than tracking a specific nearby block (which
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* could itself go bad), use a page address 'mask' to select several blocks
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* in the same area, and rewrite the BBT when any of them are erased.
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* 12-05-2004 dmarlin: add workaround for Renesas AG-AND chips "disturb"
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* issue. Basically, any block not rewritten may lose data when
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* surrounding blocks are rewritten many times. JFFS2 ensures
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* this doesn't happen for blocks it uses, but the Bad Block
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* Table(s) may not be rewritten. To ensure they do not lose
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* data, force them to be rewritten when some of the surrounding
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* blocks are erased. Rather than tracking a specific nearby
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* block (which could itself go bad), use a page address 'mask' to
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* select several blocks in the same area, and rewrite the BBT
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* when any of them are erased.
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*
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* 01-03-2005 dmarlin: added support for the device recovery command sequence for Renesas
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* AG-AND chips. If there was a sudden loss of power during an erase operation,
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* a "device recovery" operation must be performed when power is restored
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* to ensure correct operation.
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* 01-03-2005 dmarlin: added support for the device recovery command sequence
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* for Renesas AG-AND chips. If there was a sudden loss of power
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* during an erase operation, a "device recovery" operation must
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* be performed when power is restored to ensure correct
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* operation.
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*
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* 01-20-2005 dmarlin: added support for optional hardware specific callback routine to
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* perform extra error status checks on erase and write failures. This required
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* adding a wrapper function for nand_read_ecc.
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* 01-20-2005 dmarlin: added support for optional hardware specific callback
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* routine to perform extra error status checks on erase and write
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* failures. This required adding a wrapper function for
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* nand_read_ecc.
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*
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* 08-20-2005 vwool: suspend/resume added
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*
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@ -132,32 +136,43 @@ static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len);
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static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len);
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static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len);
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static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
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static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char *buf);
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static int nand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
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static int nand_read_oob(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
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static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
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size_t *retlen, u_char *buf, u_char *eccbuf,
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struct nand_oobinfo *oobsel);
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static int nand_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char *buf);
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static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
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size_t *retlen, const u_char *buf);
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static int nand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
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size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
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static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
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static int nand_writev(struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
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size_t *retlen, const u_char *buf, u_char *eccbuf,
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struct nand_oobinfo *oobsel);
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static int nand_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
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size_t *retlen, const u_char *buf);
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static int nand_writev(struct mtd_info *mtd, const struct kvec *vecs,
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unsigned long count, loff_t to, size_t *retlen);
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static int nand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs,
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unsigned long count, loff_t to, size_t *retlen, u_char *eccbuf,
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struct nand_oobinfo *oobsel);
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unsigned long count, loff_t to, size_t *retlen,
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u_char *eccbuf, struct nand_oobinfo *oobsel);
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static int nand_erase(struct mtd_info *mtd, struct erase_info *instr);
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static void nand_sync(struct mtd_info *mtd);
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/* Some internal functions */
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static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int page, u_char * oob_buf,
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static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this,
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int page, u_char * oob_buf,
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struct nand_oobinfo *oobsel, int mode);
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#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
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static int nand_verify_pages(struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
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u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode);
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static int nand_verify_pages(struct mtd_info *mtd, struct nand_chip *this,
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int page, int numpages, u_char *oob_buf,
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struct nand_oobinfo *oobsel, int chipnr,
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int oobmode);
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#else
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#define nand_verify_pages(...) (0)
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#endif
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static int nand_get_device(struct nand_chip *this, struct mtd_info *mtd, int new_state);
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static int nand_get_device(struct nand_chip *this, struct mtd_info *mtd,
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int new_state);
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/**
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* nand_release_device - [GENERIC] release chip
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@ -424,14 +439,16 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
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page = (int)ofs;
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if (this->options & NAND_BUSWIDTH_16) {
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this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask);
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this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE,
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page & this->pagemask);
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bad = cpu_to_le16(this->read_word(mtd));
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if (this->badblockpos & 0x1)
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bad >>= 8;
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if ((bad & 0xFF) != 0xff)
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res = 1;
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} else {
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this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask);
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this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos,
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page & this->pagemask);
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if (this->read_byte(mtd) != 0xff)
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res = 1;
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}
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@ -498,7 +515,8 @@ static int nand_check_wp(struct mtd_info *mtd)
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* Check, if the block is bad. Either by reading the bad block table or
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* calling of the scan function.
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*/
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static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt)
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static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip,
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int allowbbt)
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{
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struct nand_chip *this = mtd->priv;
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@ -540,7 +558,8 @@ static void nand_wait_ready(struct mtd_info *mtd)
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* Send command to NAND device. This function is used for small page
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* devices (256/512 Bytes per page)
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*/
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static void nand_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
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static void nand_command(struct mtd_info *mtd, unsigned command, int column,
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int page_addr)
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{
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register struct nand_chip *this = mtd->priv;
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@ -755,7 +774,8 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned command, int column,
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*
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* Get the device and lock it for exclusive access
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*/
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static int nand_get_device(struct nand_chip *this, struct mtd_info *mtd, int new_state)
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static int
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nand_get_device(struct nand_chip *this, struct mtd_info *mtd, int new_state)
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{
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spinlock_t *lock = &this->controller->lock;
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wait_queue_head_t *wq = &this->controller->wq;
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@ -942,7 +962,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *this, int pag
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* nand_verify_pages - [GENERIC] verify the chip contents after a write
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* @mtd: MTD device structure
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* @this: NAND chip structure
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* @page: startpage inside the chip, must be called with (page & this->pagemask)
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* @page: startpage inside the chip, must be called with (page & this->pagemask)
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* @numpages: number of pages to verify
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* @oob_buf: out of band data buffer
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* @oobsel: out of band selecttion structre
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@ -2293,8 +2313,8 @@ static void nand_resume(struct mtd_info *mtd)
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if (this->state == FL_PM_SUSPENDED)
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nand_release_device(mtd);
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else
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printk(KERN_ERR "resume() called for the chip which is not in suspended state\n");
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printk(KERN_ERR "nand_resume() called for a chip which is not "
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"in suspended state\n");
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}
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/*
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@ -11,47 +11,11 @@
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Info:
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* Contains standard defines and IDs for NAND flash devices
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* Info:
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* Contains standard defines and IDs for NAND flash devices
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*
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* Changelog:
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* 01-31-2000 DMW Created
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* 09-18-2000 SJH Moved structure out of the Disk-On-Chip drivers
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* so it can be used by other NAND flash device
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* drivers. I also changed the copyright since none
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* of the original contents of this file are specific
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* to DoC devices. David can whack me with a baseball
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* bat later if I did something naughty.
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* 10-11-2000 SJH Added private NAND flash structure for driver
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* 10-24-2000 SJH Added prototype for 'nand_scan' function
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* 10-29-2001 TG changed nand_chip structure to support
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* hardwarespecific function for accessing control lines
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* 02-21-2002 TG added support for different read/write adress and
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* ready/busy line access function
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* 02-26-2002 TG added chip_delay to nand_chip structure to optimize
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* command delay times for different chips
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* 04-28-2002 TG OOB config defines moved from nand.c to avoid duplicate
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* defines in jffs2/wbuf.c
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* 08-07-2002 TG forced bad block location to byte 5 of OOB, even if
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* CONFIG_MTD_NAND_ECC_JFFS2 is not set
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* 08-10-2002 TG extensions to nand_chip structure to support HW-ECC
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*
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* 08-29-2002 tglx nand_chip structure: data_poi for selecting
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* internal / fs-driver buffer
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* support for 6byte/512byte hardware ECC
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* read_ecc, write_ecc extended for different oob-layout
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* oob layout selections: NAND_NONE_OOB, NAND_JFFS2_OOB,
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* NAND_YAFFS_OOB
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* 11-25-2002 tglx Added Manufacturer code FUJITSU, NATIONAL
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* Split manufacturer and device ID structures
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*
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* 02-08-2004 tglx added option field to nand structure for chip anomalities
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* 05-25-2004 tglx added bad block table support, ST-MICRO manufacturer id
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* update of nand_chip structure description
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* 01-17-2005 dmarlin added extended commands for AG-AND device and added option
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* for BBT_AUTO_REFRESH.
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* 01-20-2005 dmarlin added optional pointer to hardware specific callback for
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* extra error status checks.
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* Changelog:
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* See git changelog.
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*/
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#ifndef __LINUX_MTD_NAND_H
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#define __LINUX_MTD_NAND_H
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@ -68,7 +32,8 @@ extern int nand_scan (struct mtd_info *mtd, int max_chips);
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extern void nand_release (struct mtd_info *mtd);
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/* Read raw data from the device without ECC */
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extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen);
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extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from,
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size_t len, size_t ooblen);
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/* The maximum number of NAND chips in an array */
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@ -84,7 +49,7 @@ extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_
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* Constants for hardware specific CLE/ALE/NCE function
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*/
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/* Select the chip by setting nCE to low */
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#define NAND_CTL_SETNCE 1
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#define NAND_CTL_SETNCE 1
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/* Deselect the chip by setting nCE to high */
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#define NAND_CTL_CLRNCE 2
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/* Select the command latch by setting CLE to high */
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@ -285,19 +250,19 @@ struct nand_hw_control {
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* is read from the chip status register
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* @cmdfunc: [REPLACEABLE] hardwarespecific function for writing commands to the chip
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* @waitfunc: [REPLACEABLE] hardwarespecific function for wait on ready
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* @calculate_ecc: [REPLACEABLE] function for ecc calculation or readback from ecc hardware
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* @calculate_ecc: [REPLACEABLE] function for ecc calculation or readback from ecc hardware
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* @correct_data: [REPLACEABLE] function for ecc correction, matching to ecc generator (sw/hw)
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* @enable_hwecc: [BOARDSPECIFIC] function to enable (reset) hardware ecc generator. Must only
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* be provided if a hardware ECC is available
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* @erase_cmd: [INTERN] erase command write function, selectable due to AND support
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* @scan_bbt: [REPLACEABLE] function to scan bad block table
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* @eccmode: [BOARDSPECIFIC] mode of ecc, see defines
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* @eccsize: [INTERN] databytes used per ecc-calculation
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* @eccbytes: [INTERN] number of ecc bytes per ecc-calculation step
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* @eccsize: [INTERN] databytes used per ecc-calculation
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* @eccbytes: [INTERN] number of ecc bytes per ecc-calculation step
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* @eccsteps: [INTERN] number of ecc calculation steps per page
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* @chip_delay: [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR)
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* @wq: [INTERN] wait queue to sleep on if a NAND operation is in progress
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* @state: [INTERN] the current state of the NAND device
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* @state: [INTERN] the current state of the NAND device
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* @page_shift: [INTERN] number of address bits in a page (column address bits)
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* @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock
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* @bbt_erase_shift: [INTERN] number of address bits in a bbt entry
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@ -327,7 +292,7 @@ struct nand_hw_control {
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struct nand_chip {
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void __iomem *IO_ADDR_R;
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void __iomem *IO_ADDR_W;
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void __iomem *IO_ADDR_W;
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u_char (*read_byte)(struct mtd_info *mtd);
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void (*write_byte)(struct mtd_info *mtd, u_char byte);
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@ -340,12 +305,12 @@ struct nand_chip {
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void (*select_chip)(struct mtd_info *mtd, int chip);
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int (*block_bad)(struct mtd_info *mtd, loff_t ofs, int getchip);
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int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
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void (*hwcontrol)(struct mtd_info *mtd, int cmd);
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int (*dev_ready)(struct mtd_info *mtd);
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void (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column, int page_addr);
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int (*waitfunc)(struct mtd_info *mtd, struct nand_chip *this, int state);
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void (*hwcontrol)(struct mtd_info *mtd, int cmd);
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int (*dev_ready)(struct mtd_info *mtd);
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void (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column, int page_addr);
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int (*waitfunc)(struct mtd_info *mtd, struct nand_chip *this, int state);
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int (*calculate_ecc)(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
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int (*correct_data)(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
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int (*correct_data)(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
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void (*enable_hwecc)(struct mtd_info *mtd, int mode);
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void (*erase_cmd)(struct mtd_info *mtd, int page);
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int (*scan_bbt)(struct mtd_info *mtd);
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@ -353,14 +318,14 @@ struct nand_chip {
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int eccsize;
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int eccbytes;
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int eccsteps;
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int chip_delay;
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int chip_delay;
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wait_queue_head_t wq;
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nand_state_t state;
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int page_shift;
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nand_state_t state;
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int page_shift;
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int phys_erase_shift;
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int bbt_erase_shift;
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int chip_shift;
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u_char *data_buf;
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u_char *data_buf;
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u_char *oob_buf;
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int oobdirty;
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u_char *data_poi;
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@ -389,19 +354,19 @@ struct nand_chip {
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#define NAND_MFR_NATIONAL 0x8f
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#define NAND_MFR_RENESAS 0x07
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#define NAND_MFR_STMICRO 0x20
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#define NAND_MFR_HYNIX 0xad
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#define NAND_MFR_HYNIX 0xad
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/**
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* struct nand_flash_dev - NAND Flash Device ID Structure
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*
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* @name: Identify the device type
|
||||
* @id: device ID code
|
||||
* @pagesize: Pagesize in bytes. Either 256 or 512 or 0
|
||||
* @name: Identify the device type
|
||||
* @id: device ID code
|
||||
* @pagesize: Pagesize in bytes. Either 256 or 512 or 0
|
||||
* If the pagesize is 0, then the real pagesize
|
||||
* and the eraseize are determined from the
|
||||
* extended id bytes in the chip
|
||||
* @erasesize: Size of an erase block in the flash device.
|
||||
* @chipsize: Total chipsize in Mega Bytes
|
||||
* @erasesize: Size of an erase block in the flash device.
|
||||
* @chipsize: Total chipsize in Mega Bytes
|
||||
* @options: Bitfield to store chip relevant options
|
||||
*/
|
||||
struct nand_flash_dev {
|
||||
|
|
@ -416,7 +381,7 @@ struct nand_flash_dev {
|
|||
/**
|
||||
* struct nand_manufacturers - NAND Flash Manufacturer ID Structure
|
||||
* @name: Manufacturer name
|
||||
* @id: manufacturer ID code of device.
|
||||
* @id: manufacturer ID code of device.
|
||||
*/
|
||||
struct nand_manufacturers {
|
||||
int id;
|
||||
|
|
@ -456,7 +421,7 @@ struct nand_bbt_descr {
|
|||
int veroffs;
|
||||
uint8_t version[NAND_MAX_CHIPS];
|
||||
int len;
|
||||
int maxblocks;
|
||||
int maxblocks;
|
||||
int reserved_block_code;
|
||||
uint8_t *pattern;
|
||||
};
|
||||
|
|
@ -501,8 +466,8 @@ extern int nand_default_bbt (struct mtd_info *mtd);
|
|||
extern int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt);
|
||||
extern int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt);
|
||||
extern int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
|
||||
size_t * retlen, u_char * buf, u_char * oob_buf,
|
||||
struct nand_oobinfo *oobsel, int flags);
|
||||
size_t * retlen, u_char * buf, u_char * oob_buf,
|
||||
struct nand_oobinfo *oobsel, int flags);
|
||||
|
||||
/*
|
||||
* Constants for oob configuration
|
||||
|
|
@ -526,7 +491,7 @@ struct platform_nand_chip {
|
|||
int chip_offset;
|
||||
int nr_partitions;
|
||||
struct mtd_partition *partitions;
|
||||
int chip_delay;
|
||||
int chip_delay;
|
||||
unsigned int options;
|
||||
void *priv;
|
||||
};
|
||||
|
|
@ -542,8 +507,8 @@ struct platform_nand_chip {
|
|||
* All fields are optional and depend on the hardware driver requirements
|
||||
*/
|
||||
struct platform_nand_ctrl {
|
||||
void (*hwcontrol)(struct mtd_info *mtd, int cmd);
|
||||
int (*dev_ready)(struct mtd_info *mtd);
|
||||
void (*hwcontrol)(struct mtd_info *mtd, int cmd);
|
||||
int (*dev_ready)(struct mtd_info *mtd);
|
||||
void (*select_chip)(struct mtd_info *mtd, int chip);
|
||||
void *priv;
|
||||
};
|
||||
|
|
|
|||
Reference in New Issue