linux-toradex.git/drivers/spi/spi-davinci.c, branch v3.17

Merge remote-tracking branches 'spi/fix/davinci', 'spi/fix/dw', 'spi/fix/fsl', 'spi/fix/pl022', 'spi/fix/rockchip' and 'spi/fix/sirf' into spi-linus

2014-09-16T23:20:19+00:00

spi: davinci: remove empty function davinci_spi_cleanup

2014-09-16T17:30:10+00:00

Remove empty function davinci_spi_cleanup().

Signed-off-by: Grygorii Strashko 
Signed-off-by: Mark Brown

spi: davinci: request cs_gpio's from probe

2014-09-13T16:25:46+00:00

Now CS GPIOs are requested from struct spi_master.setup() callback
and that causes failures when Client SPI device is getting accessed
through SPIDEV driver. The failure happens, because .setup() callback
may be called many times from IOCTL handler and when it's called
second time gpio_request() will fail and return -EBUSY.

Hence, fix it by moving CS GPIOs requesting code in .probe().

Reported-by: Murali Karicheri 
Signed-off-by: Grygorii Strashko 
Signed-off-by: Mark Brown

spi: davinci: fix SPI_NO_CS functionality

2014-08-21T18:08:56+00:00

The driver should not touch CS lines if SPI_NO_CS flag is set.
This patch fixes it as this functionality was broken accidentally
by
commit a88e34ea213e1b ("spi: davinci: add support to configure gpio cs through dt").

Fixes: a88e34ea213e1b ("spi: davinci: add support to configure gpio cs through dt")
Signed-off-by: Grygorii Strashko 
Signed-off-by: Mark Brown

spi: davinci: use spi_device.cs_gpio to store gpio cs per spi device

2014-08-01T18:20:52+00:00

Rework Davinci SPI driver to store GPIO CS number in cs_gpio field
of SPI device structure (spi_device) for both DT and non-DT cases.
This will make Davinci SPI driver code simpler and allows to reuse
more SPI core functionality.

Signed-off-by: Grygorii Strashko 
Signed-off-by: Mark Brown

spi: davinci: add support to configure gpio cs through dt

2014-08-01T18:20:52+00:00

Currently driver supports only configuration of GPIO CS through
platform data. This patch enhances the driver to configure GPIO
CS through DT. Also update the DT binding documentation to
reflect the availability of cs-gpios.

Signed-off-by: Murali Karicheri 
Signed-off-by: Grygorii Strashko 
Signed-off-by: Mark Brown

spi: davinci: fix to support more than 2 chip selects

2014-07-31T19:35:32+00:00

Currently, the driver defines SPI_MAX_CHIPSELECT as 2 and
use per device array bytes_per_word based on this. This breaks
if num_chipselect per device is greater than 2. This patch
fix this and allocate memory for this array based on
num_chipselect.

It's preparation patch to enable GPIO CS feature for
Davinci SPI.

Signed-off-by: Murali Karicheri 
Signed-off-by: Grygorii Strashko 
Signed-off-by: Mark Brown

spi: davinci: Use of_match_ptr at appropriate place

2014-02-06T12:52:59+00:00

It's pointless to use of_match_ptr within CONFIG_OF guard.
Use of_match_ptr around davinci_spi_of_match when setting .of_match_table.

Signed-off-by: Axel Lin 
Signed-off-by: Mark Brown

spi: davinci: Remove unneeded NULL checking for dspi and dspi->bitbang.master

2014-02-06T12:52:58+00:00

spi_master_get_devdata() never returns NULL when spi_alloc_master() success,
so remove NULL test for dspi.
We have ensured master is not NULL before assigning it to dspi->bitbang.master.
So also remove NULL test for dspi->bitbang.master.

Signed-off-by: Axel Lin 
Signed-off-by: Mark Brown

Merge remote-tracking branches 'spi/topic/bcm2835', 'spi/topic/bcm63xx', 'spi/topic/bcm63xx-hsspi', 'spi/topic/bitbang', 'spi/topic/bpw', 'spi/topic/clps711x', 'spi/topic/coldfire', 'spi/topic/davinci', 'spi/topic/dw' and 'spi/topic/falcon' into spi-linus

2014-01-23T13:07:05+00:00