From: Kyungmin Park Date: Wed, 28 Apr 2010 15:46:47 +0000 (+0200) Subject: mtd: onenand: add new callback for bufferram read X-Git-Tag: v2.6.35-rc1~465^2~27 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3328dc315914aa6db486da2ceb021b6f0b36b877;p=karo-tx-linux.git mtd: onenand: add new callback for bufferram read This patch adds a new callback for the underlying drivers, which is called instead of accessing the buffer ram directly. This callback will be used by Samsung OneNAND driver to implement DMA transfers on S5PC110 SoC. Signed-off-by: Kyungmin Park Signed-off-by: Marek Szyprowski Signed-off-by: David Woodhouse --- diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 045811f21497..9827ab779c08 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1635,7 +1635,6 @@ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len) { struct onenand_chip *this = mtd->priv; - void __iomem *dataram; int ret = 0; int thislen, column; @@ -1655,10 +1654,9 @@ static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, onenand_update_bufferram(mtd, addr, 1); - dataram = this->base + ONENAND_DATARAM; - dataram += onenand_bufferram_offset(mtd, ONENAND_DATARAM); + this->read_bufferram(mtd, ONENAND_DATARAM, this->verify_buf, 0, mtd->writesize); - if (memcmp(buf, dataram + column, thislen)) + if (memcmp(buf, this->verify_buf, thislen)) return -EBADMSG; len -= thislen; diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 9b43268224a7..c26ff86ad08a 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -212,6 +212,8 @@ struct mtd_partition; struct onenand_platform_data { void (*mmcontrol)(struct mtd_info *mtd, int sync_read); + int (*read_bufferram)(struct mtd_info *mtd, int area, + unsigned char *buffer, int offset, size_t count); struct mtd_partition *parts; unsigned int nr_parts; };