mtd: nand/fsmc: Access the NAND device word by word whenever possible
authorVipin Kumar <vipin.kumar@st.com>
Wed, 14 Mar 2012 06:17:17 +0000 (11:17 +0530)
committerDavid Woodhouse <David.Woodhouse@intel.com>
Tue, 27 Mar 2012 00:00:14 +0000 (01:00 +0100)
commit604e75444fa82cfdcba339e3bd4da1dfd6947539
tree44e3c2dd6ce4e9ef871ca5dd9f74fa197f655b2d
parent712c4add03277197168210bb628b8273e36adf76
mtd: nand/fsmc: Access the NAND device word by word whenever possible

The default way of accessing nand device is using the nand width. This means
that 8bit devices are using u8 * and 16bit devices are accessed using u16 *.

This results in a non-optimal performance since the FSMC is designed to
translate the normal word accesses into device width based accesses. This patch
implements read_buf and write_buf callbacks using word by word accesses.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Reviewed-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
drivers/mtd/nand/fsmc_nand.c
include/linux/mtd/fsmc.h