spi: introduce macros to set bits_per_word_mask
authorStephen Warren <swarren@wwwdotorg.org>
Wed, 22 May 2013 02:36:34 +0000 (20:36 -0600)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Wed, 22 May 2013 15:57:43 +0000 (10:57 -0500)
commit2922a8de996956893bb98e4aa91be9774c958336
treec9181673361f52877caa50047ecc04dabbd13c0d
parentc7788792a5e7b0d5d7f96d0766b4cb6112d47d75
spi: introduce macros to set bits_per_word_mask

Introduce two macros to make setting up spi_master.bits_per_word_mask
easier, and avoid mistakes like writing BIT(n) instead of BIT(n - 1).

SPI_BPW_MASK is for a single supported value of bits_per_word_mask.

SPI_BPW_RANGE_MASK represents a contiguous set of bit lengths.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
include/linux/spi/spi.h