tree 082f4462c98661a6b4da3e924cafe20df9cf9218
parent 8a33a373e5ffb6040c58ff41ea48ba21d5f8b5e9
author Alek Du <alek.du@intel.com> 1301497794 +0800
committer Grant Likely <grant.likely@secretlab.ca> 1301542308 -0600

spi/dw_spi: change poll mode transfer from byte ops to batch ops

Current poll transfer will read/write one word, then wait till the
hw is non-busy, it's not efficient. This patch will try to read/write
as many words as permitted by hardware FIFO depth.

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>