Hi,
the main goal of the patchset is to support SPI cnnected device
without CS line link.
The first two patches make the s3c64xx driver to consider the
case of a disconnected CS line. This is done by adding a property
in the DTS ("no-cs-readback") which informs the device driver the
absence of a chip selection link.
The last three patches are just some code re-work and
beautification.
Changelog: V1 -> V2
- the first version of the patchset was removing an 'if'
statement on "!spi->chip_select" which was causing the SPI
core to fail. In this case the drivers would have been able to
set a chip_select = 0 in absence of a CS link. After a short
discussion with Mark, this has been replaced, as described
above, by a property in the DTS.
- one more patch has been added which assigns to some variable
the proper type
- some typos fixed in the commit messages
Thanks,
Andi
Andi Shyti (5):
spi: s3c64xx: group the CS signalling writes in a single function
spi: s3c64xx: consider the case when the CS line is not connected
spi: s3c64xx: do not configure the device twice
spi: s3c64xx: simplify if statement in prepare_transfer function
spi: s3c64xx: use unsigned type for fifo handling variables
.../devicetree/bindings/spi/spi-samsung.txt | 3 +
drivers/spi/spi-s3c64xx.c | 114 +++++++++++----------
include/linux/platform_data/spi-s3c64xx.h | 1 +
3 files changed, 65 insertions(+), 53 deletions(-)
--
2.8.1
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