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2018-02-18iio: add SPDX identifier for various driversMatt Ranostay12-147/+48
Add GPLv2+ SPDX identifier and update email for author's drivers. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-17iio: chemical: ccs811: Typo correction in HW_ID_VALUE constant define namingRichard Lai1-2/+2
This particular constant was named with prefix "CCS881", which should be "CCS811" instead, just like the rest of constant names in the file, as this driver implementation is for AMS CCS811 sensor. "CCS881" could literally be referring to another sensor product unrelated to AMS CCS811 sensor. Signed-off-by: Richard Lai <richard@richardman.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-17iio:pressure:ms5611: Fix coding style in probe functionrodrigosiqueira1-1/+1
This patch fixes the checkpatch.pl warning and error: iio/pressure/ms5611.h:66: ERROR: code indent should use tabs where possible iio/pressure/ms5611.h:66: WARNING: please, no spaces at the start of a line iio/pressure/ms5611.h:66: ERROR: "foo* bar" should be "foo *bar" Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-17iio: sysfs-bus-iio-*: update email contactMatt Ranostay2-3/+3
Change email contact for ABI documention to author's current employer on the following files: * sysfs-bus-iio-chemical-vz89x * sysfs-bus-iio-proximity-as3935 Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-17iio: dht11: Improve detection of sensor typeHarald Geyer1-1/+1
The old code was based on a DHT11 datasheet which specifies a measurement range of 20%-90% RH. Turns out the sensor actually reports values outside this range, so we should support it as far as possible. Reported-by: Edward Attfield <edward@attfield.ca> Signed-off-by: Harald Geyer <harald@ccbib.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-17staging: ade7759: Fix open parenthesis alignmentrodrigosiqueira1-42/+38
This patch fixes the CHECKs reported by checkpatch.pl for "alignment should match open parenthesis" Signed-off-by: rodrigosiqueira <rodrigosiqueiramelo@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-10iio: ad5272: Add support for Analog Devices digital potentiometersPhil Reid3-0/+242
Add implementation for Analog Devices AD5272 and AD5274 digital potentiometer devices. Signed-off-by: Phil Reid <preid@electromag.com.au> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-10dt-bindings: ad5272: Add bindings for Analog Devices digital potentiometersPhil Reid1-0/+27
Add binding documentation for Analog Devices AD5272 and AD5274 digital potentiometer devices. Signed-off-by: Phil Reid <preid@electromag.com.au> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-10Staging: iio: ade7758: Expand buf_lock to cover both buffer and state protectionShreeya Patel2-15/+39
iio_dev->mlock is to be used only by the IIO core for protecting device mode changes between INDIO_DIRECT and INDIO_BUFFER. This patch replaces the use of mlock with the already established buf_lock mutex. Introducing 'unlocked' forms of read and write registers. The read/write frequency functions now require buf_lock to be held. That's not obvious so avoid this but moving the locking inside the functions where it is then clear that they are taking the unlocked forms of the register read/write. It isn't readily apparent that write frequency function requires the locks to be taken, so move it inside the function to where it is required to protect. Also, the read raw does not require iio_dev->mlock for reads. It can run concurrently as resource protection is handled by buf_lock in read register. Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-04iio: temperature: Adding support for MLX90632Crt Mori4-0/+770
Melexis has just released Infra Red temperature sensor MLX90632 used for contact-less temperature measurement. Driver provides basic functionality for reporting object (and ambient) temperature with support for object emissivity. Signed-off-by: Crt Mori <cmo@melexis.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-04dt-bindings: iio: temperature: add MLX90632 device bindingsCrt Mori1-0/+28
Add device tree bindings for MLX90632 IR temperature sensor. Signed-off-by: Crt Mori <cmo@melexis.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-04lib: Add strongly typed 64bit int_sqrtCrt Mori2-0/+39
There is no option to perform 64bit integer sqrt on 32bit platform. Added stronger typed int_sqrt64 enables the 64bit calculations to be performed on 32bit platforms. Using same algorithm as int_sqrt() with strong typing provides enough precision also on 32bit platforms, but it sacrifices some performance. In case values are smaller than ULONG_MAX the standard int_sqrt is used for calculation to maximize the performance due to more native calculations. Signed-off-by: Crt Mori <cmo@melexis.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: imu: st_lsm6dsx: add hw timestamp supportLorenzo Bianconi3-70/+224
Introduce hw timestamp support instead of compute sample timestamps according to interrupt rate and configured watermark. LSM6DSx based devices are able to queue in hw FIFO the time reference of data sampling Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: adc: change license descriptionMilan Stevanovic1-2/+1
Using an SPDX tag. Remove a license notice to keep the whole purpose of using an SPDx id. Signed-off-by: Milan Stevanovic <milan.o.stevanovic@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: adc: driver for ti adc081s/adc101s/adc121sMilan Stevanovic1-1/+22
Add Linux device driver for TI single-channel CMOS 8/10/12-bit analog-to-digital converter with a high-speed serial interface. Signed-off-by: Milan Stevanovic <milan.o.stevanovic@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio/adc: depend on SYSFS instead of selecting itRandy Dunlap1-2/+1
Drivers should not 'select' a subsystem. Instead they should depend on it. If the subsystem is disabled, the user probably did that for a purpose and one driver shouldn't be changing that. This also makes all IIO drivers consistent w.r.t depending on SYSFS instead of selecting it. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Cameron <jic23@kernel.org> Cc: linux-iio@vger.kernel.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: adc: axp20x_adc: add support for AXP813 ADCQuentin Schulz2-0/+125
The X-Powers AXP813 PMIC is really close to what is already done for AXP20X/AXP22X. There are two pairs of bits to set the rate (one for Voltage and Current measurements and one for TS/GPIO0 voltage measurements) instead of one. The register to set the ADC rates is different from the one for AXP20X/AXP22X. GPIO0 can be used as an ADC (measuring Volts) unlike for AXP22X. The scales to apply to the different inputs are unlike the ones from AXP20X and AXP22X. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: adc: axp20x_adc: make it possible to probe from DTQuentin Schulz1-1/+18
To prepare for a future patch that will add a DT node for the ADC, make axp20x_adc able to probe from DT and get the per-variant data from of_device_id.data since platform_device_id.driver_data won't be set when probing by DT. Leave the ability to probe via platform for driver compatibility with old DTs. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30dt-bindings: iio: adc: add binding for X-Powers AXP PMICs ADCQuentin Schulz1-0/+48
X-Powers PMICs have several ADC channels that can be used for different purposes, e.g. PMIC internal temperature, battery voltage or AC current. This is the documentation for AXP209, AXP221/223 and AXP813 ADC bindings. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: adc: axp20x_adc: put ADC rate setting in a per-variant functionQuentin Schulz1-7/+11
To prepare for a new comer that set a different register with different values, move rate setting in a function that is specific to each AXP variant. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30staging: iio: adc: ad7192: disable burnout currents on misconfigAlexandru Ardelean1-1/+5
The burnout currents can be enabled only if buffer is enabled and CHOP is disabled. So, if neither of these conditions are met, then we should disable the burnout currents in the driver as well, and warn the user. This change doesn't fix anything. The burnout currents simply won't work if CHOP is enabled or buffer is disabled. The intent is to provide the user with some feedback instead of silently not working inside the chip. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: ep93xx: remove redundant return value check of platform_get_resource()Wei Yongjun1-4/+0
Remove unneeded error handling on the result of a call to platform_get_resource() when the value is passed to devm_ioremap_resource(). Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: humidity: hts221: remove unnecessary get_unaligned_le16()Lorenzo Bianconi1-4/+3
Remove unnecessary unaligned access routine in hts221_read_oneshot() and the related include Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: humidity: hts221: add regmap API supportLorenzo Bianconi6-217/+103
Introduce regmap API support to access to i2c/spi bus instead of using a custom support. Remove lock mutex since concurrency is already managed by regmap API Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: humidity: hts221: remove trailing whitespace from a commentLorenzo Bianconi1-1/+1
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: humidity: hts221: remove warnings in hts221_parse_{temp,rh}_caldata()Lorenzo Bianconi1-13/+15
Remove following sparse warnings in hts221_parse_temp_caldata() and in hts221_parse_rh_caldata(): drivers/iio/humidity/hts221_core.c:302:19: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:314:18: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:320:18: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:355:18: warning: cast to restricted __le16 drivers/iio/humidity/hts221_core.c:361:18: warning: cast to restricted __le16 Fixes: e4a70e3e7d84 ("iio: humidity: add support to hts221 rh/temp combo device") Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-30iio: accel: use strlcpy() instead of strncpy()Xiongfeng Wang1-2/+1
gcc-8 reports drivers/iio/accel/st_accel_i2c.c: In function 'st_accel_i2c_probe': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified bound 20 equals destination size [-Wstringop-truncation] The compiler require that the length of the dest string is greater than the length we want to copy to make sure the dest string is nul-terminated. We can just use strlcpy() to avoid this warning. Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-01-10staging: pi433: Cleanup codestyle, indent statements after case labelsMichael Panzlaff1-79/+158
This patch changes the indentation of the statements after case labels. The linux coding guidelines do not explicitly mentiond this but pretty much all existing code doesn't put any statements into the same line of their belonging case labels. Therefore this adapts to the more usual style. Please note that there is still a lot of > 80 character lines which will cause checkpatch warnings. This patch does not intent to fix this already existing issue. Signed-off-by: Michael Panzlaff <michael.panzlaff@fau.de> Signed-off-by: Tillmann Zipperer <tillmann.zipperer@fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-10staging: rtl8723bs: Fix trailing semicolonLuis de Bethencourt1-1/+1
The trailing semicolon is an empty statement that does nothing. Removing it since it has no purpose. Signed-off-by: Luis de Bethencourt <luisbg@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-10staging: rtl8723bs: Fix trailing semicolonLuis de Bethencourt1-1/+1
The trailing semicolon is an empty statement that does no operation. Removing it since it doesn't do anything. Signed-off-by: Luis de Bethencourt <luisbg@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-10staging: fbtft: Fix indentationLuis Gerhorst1-2/+2
This fixes the checkpatch message: CHECK: Alignment should match open parenthesis #1380: FILE: drivers/staging/fbtft/fbtft-core.c:1380: + dev_warn(dev, + "no default functions for regwidth=%d and buswidth=%d\n", Signed-off-by: Luis Gerhorst <linux-kernel@luisgerhorst.de> Signed-off-by: Jonny Schaefer <schaefer.jonny@gmail.com> Acked-by: Alexander Wuerstlein <arw@cs.fau.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-10staging: rts5208: sd: fix misspelled constantSumit Pundir1-1/+1
Fixes the misspelled constant to 'SWITCH_NO_ERR'. Issue reported by checkpatch.pl Signed-off-by: Sumit Pundir <pundirsumit11@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09MAINTAINERS: Mark some staging directories as "Obsolete"Joe Perches1-3/+3
Several staging directories have TODO files that indicate a subsystem will be removed in the future. Using a status entry of "S: Obsolete" helps indicate the subsystem files should not be modified unnecessarily. checkpatch also tests this setting and emits a warning that the matching subsystem files should not be modified. This might help avoid receiving patches that will be dropped. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: rtl8723bs: Fix trailing semicolonLuis de Bethencourt1-1/+1
The trailing semicolon is an empty statement that does no operation. Removing it since it doesn't do anything. Signed-off-by: Luis de Bethencourt <luisbg@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09ncpfs: remove redundant cast of struct ncp_inode_infoColin Ian King1-1/+2
Casting a value returned by memory an allocation function is not required and can be removed. Also add in a newline after before the first statement. Code clean up as suggested by coccinelle. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: pi433: align function parameters with open parenthesisValentin Vidic1-5/+5
Fixes checkpatch warnings: CHECK: Alignment should match open parenthesis Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: ccree: dma mask is type u64Gilad Ben-Yossef1-2/+2
The dma mask var was defined as dma_addr_t but should be u64. This showed as a sparse warning when building for 32 bit. Fix it by changing type to u64 and drop the cast. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: ccree: make stub function static inlineGilad Ben-Yossef1-4/+4
The debugfs interface defines stub function if debugfs is not enabled, which were missing the 'static inline' qualifiers causing sparse warnings. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: ccree: add missing includeGilad Ben-Yossef1-0/+1
Add the missing include of include file with function declarations. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: ccree: remove unneeded includesGilad Ben-Yossef8-58/+0
Remove include files not needed for compilation. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: ccree: use a consistent file naming conventionGilad Ben-Yossef25-69/+69
The ccree driver source files were using an inconsistent naming convention stemming from what the company was called when they were added. Move to a single consistent naming convention for better code readability. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: remove LIBCFS_ALLOC, LIBCFS_FREE and related macros.NeilBrown1-51/+0
LIBCFS_ALLOC LIBCFS_ALLOC_ATOMIC LIBCFS_ALLOC_POST LIBCFS_CPT_ALLOC LIBCFS_FREE are no longer used, and so are removed. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: replace LIBCFS_CPT_ALLOC()NeilBrown10-110/+88
LIBCFS_APT_ALLOC() calls kvmalloc_node() with GFP_NOFS which is not permitted. Mostly, a kmalloc_node(GFP_NOFS) is appropriate, though occasionally the allocation is large and GFP_KERNEL is acceptable, so kvmalloc_node() can be used. This patch introduces 4 alternatives to LIBCFS_CPT_ALLOC(): kmalloc_cpt() kzalloc_cpt() kvmalloc_cpt() kvzalloc_cpt(). Each takes a size, gfp flags, and cpt number. Almost every call to LIBCFS_CPT_ALLOC() passes lnet_cpt_table() as the table. This patch embeds that choice in the k*alloc_cpt() macros, and opencode kzalloc_node(..., cfs_cpt_spread_node(..)) in the one case that lnet_cpt_table() isn't used. When LIBCFS_CPT_ALLOC() is replaced, the matching LIBCFS_FREE() is also replaced, with with kfree() or kvfree() as appropriate. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: opencode LIBCFS_ALLOC_ATOMIC calls.NeilBrown1-4/+3
Just call kzalloc(GFP_ATOMIC) directly. We don't need the warning on failure. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: cfs_percpt_alloc: use kvmalloc(GFP_KERNEL)NeilBrown1-3/+3
this allocation is called from several places, but all are during initialization, so GFP_NOFS is not needed. So use kvmalloc and GFP_KERNEL. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: use kmalloc for allocating ksock_txNeilBrown2-3/+3
The size of the data structure is primarily controlled by the iovec size, which is limited to 256. Entries in this vector are 12 bytes, so the whole will always fit in a page. So it is safe to use kmalloc (kvmalloc not needed). So replace LIBCFS_ALLOC with kmalloc. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: lnet-route: use kmalloc for small allocationNeilBrown1-3/+2
This allocation is reasonably small. As the function is called "*_locked", it might not be safe to perform a GFP_KERNEL allocation, so be safe and use GFP_NOFS. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: more conversions to GFP_KERNEL allocations.NeilBrown6-48/+40
These are not called from filesystem context, so use GFP_KERNEL, not LIBCFS_ALLOC(). Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: more LIBCFS_ALLOC conversions to GFP_KERNEL allocations.NeilBrown4-30/+23
None of these need GFP_NOFS so allocate directly. Change matching LIBCFS_FREE() to kfree() or kvfree(). Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09staging: lustre: Convert more LIBCFS_ALLOC allocation to direct GFP_KERNELNeilBrown4-38/+26
None of these need to be GFP_NOFS, so use GFP_KERNEL explicitly with kmalloc(), kvmalloc(), or kvmalloc_array(). Change matching LIBCFS_FREE() to kfree() or kvfree() Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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