30 Sep, 2016
1 commit
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To avoid warning when using i2c gpio expander change call to the
cansleep variant. There should be no issue with sleeping in the
drivers probe function.Signed-off-by: Phil Reid
Signed-off-by: Mark Brown
02 Sep, 2016
1 commit
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This sc18is602 has a reset pin that may need to be deasserted.
Add optional binding to specifiy the reset pin via a gpio and deassert
during probe.Signed-off-by: Phil Reid
Signed-off-by: Mark Brown
12 Apr, 2015
1 commit
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…/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next
11 Feb, 2015
1 commit
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The driver currently only supports a single device per I2C bus since it uses
the I2C bus number to set the SPI bus number. This makes it impossible to
connect more than one chip to a single I2C bus.We don't want to use dynamic bus numbers unconditionally since this would
result in every instantiation getting a different bus number starting with
65,535 counting down unless devicetree is configured. If devicetree is
configured, however, the SPI bus number is obtained from devicetree
data. So we can use dynamic SPI bus numbers in this case.Reported-and-Tested-by: Marco Menchise
Signed-off-by: Guenter Roeck
Signed-off-by: Mark Brown
22 Dec, 2014
1 commit
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Signed-off-by: Jarkko Nikula
Signed-off-by: Mark Brown
13 Mar, 2014
1 commit
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Set master->max_speed_hz and master->min_speed_hz then spi core will handle
checking transfer speed. So we can remove the same checking in this driver.This patch also remove testing if hz is 0 because spi->max_speed_hz will be
default set to master->min_speed_hz if it was not set. So the transfer speed
will never set to 0.Signed-off-by: Axel Lin
Signed-off-by: Mark Brown
12 Feb, 2014
1 commit
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So it will be checked when spi device is added onto the spi bus.
spi_add_device() calls spi_setup() which then calls spi->master->setup().
No need to check it every time sc18is602_transfer_one() is called.Signed-off-by: Axel Lin
Acked-by: Guenter Roeck
Signed-off-by: Mark Brown
03 Feb, 2014
1 commit
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The checking for spi->mode is done in the implementation of spi_setup().
Calling sc18is602_check_transfer(spi, NULL, 0) is pointless because
the code is equivent to checking if spi->max_speed_hz is 0.
Note, sc18is602_check_transfer actually allows spi->max_speed_hz is 0
if t->speed_hz is set. So return error in sc18is602_setup() when
spi->max_speed_hz is 0 does not make sense.Signed-off-by: Axel Lin
Acked-by: Guenter Roeck
Signed-off-by: Mark Brown
23 Jan, 2014
1 commit
17 Jan, 2014
2 commits
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Since commit 543bb25 "spi: add ability to validate xfer->bits_per_word in SPI
core", the driver can set bits_per_word_mask for the master then the SPI core
will reject transfers that attempt to use an unsupported bits_per_word value.
So we can remove the bits_per_word checking in sc18is602_check_transfer() and
let SPI core handle the checking.Signed-off-by: Axel Lin
Acked-by: Guenter Roeck
Signed-off-by: Mark Brown -
The implementation in spi_setup() already set spi->bits_per_word = 8 when
spi->bits_per_word is 0 before calling spi->master->setup.
So we don't need to do it again in setup() callback.Signed-off-by: Axel Lin
Acked-by: Marek Vasut
Acked-by: Barry Song
Acked-by: Guenter Roeck
Signed-off-by: Mark Brown
04 Dec, 2013
1 commit
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Use devm_spi_register_master() to make cleanup paths simpler,
and remove unnecessary remove().Signed-off-by: Jingoo Han
Acked-by: Guenter Roeck
Signed-off-by: Mark Brown
23 Aug, 2012
2 commits
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If the I2C bus master driver does not support the required functionality,
the driver returns -ENODEV. This causes a silent probe failure without error
message. Since the device has to be explicitly instantiated, and the user
should know the correct bus, this event really reflects an error condition.
Replace error return value with -EINVAL to trigger an error message showing
that the probe function failed.Signed-off-by: Guenter Roeck
Signed-off-by: Mark Brown -
This driver adds support for NXP SC18IS602/603 I2C to SPI bus bridge.
Signed-off-by: Guenter Roeck
Signed-off-by: Mark Brown