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path: root/drivers/iio/dac/ltc2632.c
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2021-03-29iio: dac: Convert powerdown read callbacks to sysfs_emit()Lars-Peter Clausen
Update DAC drivers powerdown attribute show callback to use the new sysfs_emit() function. sysfs_emit() is preferred over raw s*printf() for sysfs attributes since it knows about the sysfs buffer specifics and has some built-in sanity checks. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20210320071405.9347-5-lars@metafoo.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-07-20iio: dac: ltc2632: Fix formatting in kerneldoc struct headerLee Jones
Kerneldoc expects attributes/parameters to be in '@*.: ' format. Fixes the following W=1 kernel build warning(s): drivers/iio/dac/ltc2632.c:50: warning: Function parameter or member 'powerdown_cache_mask' not described in 'ltc2632_state' drivers/iio/dac/ltc2632.c:50: warning: Function parameter or member 'vref_mv' not described in 'ltc2632_state' drivers/iio/dac/ltc2632.c:50: warning: Function parameter or member 'vref_reg' not described in 'ltc2632_state' Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> Cc: Silvan Murer <silvan.murer@gmail.com> Cc: Maxime Roussin-Belanger <maxime.roussinbelanger@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-06-14iio: remove explicit IIO device parent assignmentAlexandru Ardelean
This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-05-03iio: DAC extension for ltc2634-12/10/8Chris Ruehl
This patch add support for Analog Devices (Linear Technology) LTC2634 Quad 12-/10-/8-Bit Rail-to-Rail DAC. The SPI functionality based on them from LTC2632 therefor add the definitions only and update the Kconfig. Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-05-03iio: documentation ltc2632_chip_info add num_channelsChris Ruehl
The documentation for ltc_2632_chip_info missed the desciption for the num_channels. This trivial patch adds it. Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk> Fixes: 9f15a4a0adc9 ("iio: dac: ltc2632: add support for LTC2636 family") Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-05-03iio: dac: ltc2632: Use put_unaligned_be24()Andy Shevchenko
This makes the driver code slightly easier to read. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-02-14iio: dac: ltc2632: remove some unused definesUwe Kleine-König
These two defines are unused since the driver was introduced in commit 02b829f9e11f ("iio: dac: Add support for ltc2632 DACs"). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-02-14iio: dac: ltc2632: add support for LTC2636 familyUwe Kleine-König
The only difference between LTC2632 and LTC2636 is that the former has two DAC channels while the latter has eight. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-02-14iio: dac: ltc2632: drop some duplicated dataUwe Kleine-König
The channel data for ltc2632l12 and ltc2632h12 are identical. So there is no gain in using two different (but identical) channel descriptions. The only side effect of this change is some memory savings. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 177Thomas Gleixner
Based on 1 normalized pattern(s): licensed under the gpl 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 135 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170026.071193225@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-23treewide: convert ISO_8859-1 text comments to utf-8Arnd Bergmann
Almost all files in the kernel are either plain text or UTF-8 encoded. A couple however are ISO_8859-1, usually just a few characters in a C comments, for historic reasons. This converts them all to UTF-8 for consistency. Link: http://lkml.kernel.org/r/20180724111600.4158975-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Simon Horman <horms@verge.net.au> [IPVS portion] Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [IIO] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Rob Herring <robh@kernel.org> Cc: Joe Perches <joe@perches.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Rob Herring <robh+dt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-07iio: dac: ltc2632 remove redundant pointer chip_info and spi_dev_idColin Ian King
Pointers chip_info and spi_dev_id are being assigned but are never used hence they are redundant and can be removed. Cleans up clang warning: warning: variable 'chip_info' set but not used [-Wunused-but-set-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-05-22iio: dac: Add support for external reference voltage through the regulator ↵Silvan Murer
framework. Signed-off-by: Silvan Murer <silvan.murer@gmail.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-05-22iio: dac: fix missing of_match_table assignment in the LTC 2632 deviceSilvan Murer
Signed-off-by: Silvan Murer <silvan.murer@gmail.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-22iio:dac: drop assignment of iio_info.driver_moduleJonathan Cameron
The equivalent of this is now done via macro magic when the relevant register call is made. The actual structure element will shortly go away. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-03-21iio: dac: Add support for ltc2632 DACsMaxime Roussin-Belanger
Add support for Linear Technology LTC2632 (SPI) family of· dual 12- 10-, and 8-bits output DACs. Signed-off-by: Maxime Roussin-Belanger <maxime.roussinbelanger@gmail.com> Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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