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authorEzequiel Garcia <ezequiel.garcia@free-electrons.com>2013-08-12 14:14:49 -0300
committerDavid Woodhouse <David.Woodhouse@intel.com>2013-08-30 21:34:52 +0100
commit5bb653e890ca7a5b4ba9042cb60d02f7ddef8c21 (patch)
treee6188756ec5c1856ce848beba9ca02f7a63a8c59 /drivers/mtd
parentcd9d11820f4232856d6254a29fbb9c4f51a981c2 (diff)
downloadlinux-5bb653e890ca7a5b4ba9042cb60d02f7ddef8c21.tar.bz2
mtd: nand: pxa3xx: Allow to set/clear the 'spare enable' field
Some commands (such as the ONFI parameter page read) need to clear the 'spare enable' bit. This commit allows to set/clear depending on the prepared command, instead of having it always set. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/pxa3xx_nand.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 1dcda6badfdc..6e28121d3118 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -185,6 +185,7 @@ struct pxa3xx_nand_info {
int cs;
int use_ecc; /* use HW ECC ? */
int use_dma; /* use DMA ? */
+ int use_spare; /* use spare ? */
int is_ready;
unsigned int page_size; /* page size of attached chip */
@@ -325,6 +326,11 @@ static void pxa3xx_nand_start(struct pxa3xx_nand_info *info)
else
ndcr &= ~NDCR_DMA_EN;
+ if (info->use_spare)
+ ndcr |= NDCR_SPARE_EN;
+ else
+ ndcr &= ~NDCR_SPARE_EN;
+
ndcr |= NDCR_ND_RUN;
/* clear status bits and run */
@@ -526,6 +532,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command,
info->buf_count = 0;
info->oob_size = 0;
info->use_ecc = 0;
+ info->use_spare = 1;
info->use_dma = (use_dma) ? 1 : 0;
info->is_ready = 0;
info->retcode = ERR_NONE;