From f77814dd5728edaf1239d19755d2aa0d8c33d861 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Tue, 8 Feb 2005 17:11:19 +0000 Subject: [MTD] Support for protection register support on Intel FLASH chips This enables support for reading, writing and locking so called "Protection Registers" present on some flash chips. A subset of them are pre-programmed at the factory with a unique set of values. The rest is user-programmable. Signed-off-by: Nicolas Pitre Signed-off-by: Thomas Gleixner --- drivers/mtd/mtdpart.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'drivers/mtd/mtdpart.c') diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 96ebb52f24b1..b92e6bfffaf2 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -5,7 +5,7 @@ * * This code is GPL * - * $Id: mtdpart.c,v 1.51 2004/11/16 18:28:59 dwmw2 Exp $ + * $Id: mtdpart.c,v 1.53 2005/02/08 17:11:13 nico Exp $ * * 02-21-2002 Thomas Gleixner * added support for read_oob, write_oob @@ -116,6 +116,13 @@ static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t le len, retlen, buf); } +static int part_get_user_prot_info (struct mtd_info *mtd, + struct otp_info *buf, size_t len) +{ + struct mtd_part *part = PART(mtd); + return part->master->get_user_prot_info (part->master, buf, len); +} + static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { @@ -124,6 +131,13 @@ static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t le len, retlen, buf); } +static int part_get_fact_prot_info (struct mtd_info *mtd, + struct otp_info *buf, size_t len) +{ + struct mtd_part *part = PART(mtd); + return part->master->get_fact_prot_info (part->master, buf, len); +} + static int part_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) { @@ -182,6 +196,12 @@ static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t l len, retlen, buf); } +static int part_lock_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len) +{ + struct mtd_part *part = PART(mtd); + return part->master->lock_user_prot_reg (part->master, from, len); +} + static int part_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen) { @@ -409,6 +429,12 @@ int add_mtd_partitions(struct mtd_info *master, slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; if(master->write_user_prot_reg) slave->mtd.write_user_prot_reg = part_write_user_prot_reg; + if(master->lock_user_prot_reg) + slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg; + if(master->get_user_prot_info) + slave->mtd.get_user_prot_info = part_get_user_prot_info; + if(master->get_fact_prot_info) + slave->mtd.get_fact_prot_info = part_get_fact_prot_info; if (master->sync) slave->mtd.sync = part_sync; if (!i && master->suspend && master->resume) { -- cgit v1.2.3