This can result in wrong reference count for trigger device, call
iio_trigger_get to increment reference.
Refer to http://www.spinics.net/lists/linux-iio/msg13669.html for discussion
with Jonathan.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
This patch adds support for the hmc5983 spi interface.
This chip is almost identical to the hmc5883. The difference being added
temperature compensation, additional available sample rate (220Hz) and an SPI
interface.
Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds support for the hmc5983 i2c interface.
This chip is almost identical to the hmc5883. The difference being added
temperature compensation, additional available sample rate (220Hz) and an SPI
interface.
Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Changed structure of struct hmc5843_chip_info to include length of translation
arrays. Code previously using #defined constant has been changed accordingly.
This allows to integrate devices which do have different amounts of available
rates/scales.
Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch splits hmc5843.c to multiple files - the interface-agnostic
hmc5843_core.c, i2c specific hmc5843_i2c.c and header file hmc5843.h. This is
another step to add support of SPI-enabled hmc5983.
Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch changes hmc5843.c to use regmap. This provides transparent caching
to the code as well as abstraction necessary to add support for SPI-based
hmc5983.
Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
MXS_LRADC need HAS_IOMEM, so let it depend on HAS_IOMEM
The related error (with allmodconfig under score):
MODPOST 1365 modules
ERROR: "devm_ioremap_resource" [drivers/staging/iio/adc/mxs-lradc.ko] undefined!
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ad7291 driver is in a reasonable shape. It does not use non-standard API/ABI
and there are no major style issues with the driver. So this patch moves it out
of staging.
There is one small warning from checkpatch which is also fixed in this patch.
The patch also sorts the #include directives in alphabetical order.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Define some names for alert register bits and apply them to
ad7291_event_handler().
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Save some lines in returning a voltage event.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Use BIT and GENMASK, remove unused defines, use AD7291_VOLTAGE_OFFSET
definition and move AD7291_BITS.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Remove second instance of definition of AD7291_BITS.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch introduces the use of the managed version of kzalloc and
removes the kfrees in the probe and remove functions. More return
paths are added and the labels are renamed to order them.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch introduces the use of devm_ioremap_resource. It does away
with call to request_mem_region and the error checking on
platform_get_resource. Also, the calls to free the allocated resources
like release_mem_region and iounmap are done away with. The ret variable
in the probe function is also eliminated. Also, a bug is fixed as the
goto in the error handling of request_mem_region should not have
called release_mem_region which releases a resource that has not been
allocated.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Otherwise, compiling iio_event_monitor program fails:
io_event_monitor.c: In function ‘event_is_known’:
iio_event_monitor.c:125:2: error: duplicate case value
case IIO_MOD_LIGHT_BOTH:
^
iio_event_monitor.c:121:2: error: previously used here
case IIO_MOD_LIGHT_BOTH:
Fixes: da4db94 (iio staging: add recently added modifiers to iio_event_monitor)
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
'val' is unsigned and cannot be negative.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
By using the info_mask_shared_by_all element of the channel spec, acce
to the sampling frequency becomes available to in kernel users of the
driver. It also shortens and simplifies the code.
This particular conversion was made more complicated by the shared library
and the fact that a number of the drivers do not actually have support for
setting or reading the sampling frequency. The hardware, in those cases
investigated supports it. It's just never been implemented.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
New drivers
* mcp4902, mcp4912 and mcp4922 SPI DAC driver.
* max1027, max1029 and max1031 SPI ADC driver.
Cleanups
* cm32181 - use devm APIs to simplify error paths.
* ak8975 - use devm APIs to simplify error paths.
* ad9850 - drop some unused defines and an unnecessary goto.
* hmc5843 - add missing devices to the device id table and the documentation.
* ad9832 - small formatting cleanups.
* sca3000 - hide direct use of the stufftoread element by adding a
data_available function. This is a precursor for the addition of buffer
watermarks to the subsystem but stands as a good cleanup on its own.
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Merge tag 'iio-for-3.17b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second round of new drivers and cleanups for IIO in the 3.17 cycle.
New drivers
* mcp4902, mcp4912 and mcp4922 SPI DAC driver.
* max1027, max1029 and max1031 SPI ADC driver.
Cleanups
* cm32181 - use devm APIs to simplify error paths.
* ak8975 - use devm APIs to simplify error paths.
* ad9850 - drop some unused defines and an unnecessary goto.
* hmc5843 - add missing devices to the device id table and the documentation.
* ad9832 - small formatting cleanups.
* sca3000 - hide direct use of the stufftoread element by adding a
data_available function. This is a precursor for the addition of buffer
watermarks to the subsystem but stands as a good cleanup on its own.
Change sca3000_ring implementation so that it exports a data_available
function to iio.
Signed-off-by: Josselin Costanzi <josselin.costanzi@mobile-devices.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fix some little style issues in drivers/staging/iio/frequency/ad9832.c .
This is my latest task of the eudyptula challenge (third attempt!)
Signed-off-by: Federico Di Pierro <nierro92@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
checkpath.pl was complaining about value_mask:
ERROR: Macros with complex values should be enclosed in parenthesis
I fixed this by simply removing it since it's not used (as well as another
macro). Got rid of the un-necessary error_ret label as well.
Signed-off-by: Guillaume Morin <guillaume@morinfr.org>
Reported-by: Michael Welling <mwelling@ieee.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New drivers
* t5403 barometric pressure sensor
* kxcjk1013 accelerometer (with a locking followup fix).
* ak09911 digital compass
Documentation
* ABI docs for proximity added (interface has been there a long time but
somehow snuck through without being documented)
* Move iio-trig-sysfs documentation out of staging (got left behind when
the driver moved some time ago).
Cleanups
* drop the timestamp argument from iio_trigger_poll(_chained) as
nothing has been done with it for some time.
* ad799x kerneldoc for ad799x_chip brought up to date.
* replace a number of reimplementations of the GENMASK macro and
use the BIT macro to cleanup a few locations.
* bring the iio_event_monitor example program up to date with new
device types.
* fix some incorrect function prototypes in iio_utils.h example code.
* INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED fix in docs. This
got left behind after we renamed it a long time back.
* fix error handling in the generic_buffer example program.
* small tidy ups in the iio-trig-periodic-rtc driver.
* Allow reseting iio-trig-periodic-rtc frequency to 0 (default) after
it has changed.
* Trivial tidy ups in coding style in iio_simply_dummy
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Merge tag 'iio-for-3.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of new drivers, cleanups and functionality for the 3.17 cycle.
New drivers
* t5403 barometric pressure sensor
* kxcjk1013 accelerometer (with a locking followup fix).
* ak09911 digital compass
Documentation
* ABI docs for proximity added (interface has been there a long time but
somehow snuck through without being documented)
* Move iio-trig-sysfs documentation out of staging (got left behind when
the driver moved some time ago).
Cleanups
* drop the timestamp argument from iio_trigger_poll(_chained) as
nothing has been done with it for some time.
* ad799x kerneldoc for ad799x_chip brought up to date.
* replace a number of reimplementations of the GENMASK macro and
use the BIT macro to cleanup a few locations.
* bring the iio_event_monitor example program up to date with new
device types.
* fix some incorrect function prototypes in iio_utils.h example code.
* INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED fix in docs. This
got left behind after we renamed it a long time back.
* fix error handling in the generic_buffer example program.
* small tidy ups in the iio-trig-periodic-rtc driver.
* Allow reseting iio-trig-periodic-rtc frequency to 0 (default) after
it has changed.
* Trivial tidy ups in coding style in iio_simply_dummy
A mixed bag of fixes, many of which feel just to late for 3.15.
* hid sensors - some devices need a feature report request in order to
change power state. This isn't part of the spec, but has been observed
on several devices and does no harm to others.
* mpl3115 has had two errors in the buffer description fixed. The presure is
signed, not unsigned and the temperature has 12 bits rather than 16.
These could lead to incorrect interpretation of the data in userspace.
* tsl2x7x - the high byte of the proximity thresholds should be written along
with the low byte (which was). This could lead to interesting results
with large thresholds.
* twl4030 - a flag to specify processed values were required was not set
when initializing a reading. As such values returned were in an unknown
state. Fixed by simply initializing it appropriately.
* IIO_SIMPLE_DUMMY_BUFFER did not select IIO_BUFFER leading to randconfig
build errors.
* ak8975 was applying an unwanted le16_to_cpu conversion as the i2c framework
already performs one. As such for big endian systems, the bytes would be
in the wrong order in the magnetic field measurements reported.
* mxs-lradc - the controllable voltage dividers were not enabled / disabled for
later channels than the first one during conversion.
* at91_adc error handling returned -ENOMEM in a u8. Return value of
at91_adc_get_trigger_value_by_name changed to int thus allowing -ENOMEM and
also original values to be returned.
* mcb - mcb_request_mem returns and ERR_PTR but the caller was checking for
NULL to detect an error.
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Merge tag 'iio-fixes-for-3.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
First set of IIO fixes for the 3.16 cycle.
A mixed bag of fixes, many of which feel just to late for 3.15.
* hid sensors - some devices need a feature report request in order to
change power state. This isn't part of the spec, but has been observed
on several devices and does no harm to others.
* mpl3115 has had two errors in the buffer description fixed. The presure is
signed, not unsigned and the temperature has 12 bits rather than 16.
These could lead to incorrect interpretation of the data in userspace.
* tsl2x7x - the high byte of the proximity thresholds should be written along
with the low byte (which was). This could lead to interesting results
with large thresholds.
* twl4030 - a flag to specify processed values were required was not set
when initializing a reading. As such values returned were in an unknown
state. Fixed by simply initializing it appropriately.
* IIO_SIMPLE_DUMMY_BUFFER did not select IIO_BUFFER leading to randconfig
build errors.
* ak8975 was applying an unwanted le16_to_cpu conversion as the i2c framework
already performs one. As such for big endian systems, the bytes would be
in the wrong order in the magnetic field measurements reported.
* mxs-lradc - the controllable voltage dividers were not enabled / disabled for
later channels than the first one during conversion.
* at91_adc error handling returned -ENOMEM in a u8. Return value of
at91_adc_get_trigger_value_by_name changed to int thus allowing -ENOMEM and
also original values to be returned.
* mcb - mcb_request_mem returns and ERR_PTR but the caller was checking for
NULL to detect an error.
argument has been ignored; adjust drivers accordingly
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch fixes coding style reported by checkpatch.pl that missing
a blank line after declarations.
Signed-off-by: Jimmy Picard <jimmyp11f155@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
periodic rtc trigger initially has frequency 0
it is possible to change trigger frequency on-the-fly, but it is not
possible to set frequency back to 0
this patch allows to set trigger frequency to 0, thereby disabling
the rtc interrupt
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fix extra space in module description
Silence output about trigger frequency when trigger gets enabled/disabled
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
read() does not return -EAGAIN
read() returns -1 and the errno value needs to be checked for -EAGAIN
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
iio-trig-sysfs has left staging with commit e64e7d5c
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
All channels' single measurement are happening on CH 0. So enabling / disabling
the divider once is not enough, because it has impact on all channels.
Set only a flag, then check this on each measurement, and enable / disable the
divider as required.
Signed-off-by: Robert Hodaszi <robert.hodaszi@digi.com>
Cc: Stable@vger.kernel.org
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
An obviously missing 'select' statement, without this we
get a link error
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Consider high byte of proximity min and max treshold in function
'tsl2x7x_chip_on'. So far, the high byte was not set.
Cc: Stable@vger.kernel.org
Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This (rather late) set consists only of fixes to patches earlier in the
cycle or minor fixes for other problems (such as randconfig build issues
picked up by Arnd). I've included the general minor fixes here as it is
very late in the current cycle and they can all wait for the merge window.
* Recent change to hid-sensors introduced a possible infinite loop due to a
typo. In the same series, a report interval unit read was added but in the
case where the hardware doesn't support it a value of 0 would lead to some
nasty issues. The patch sets it to the specified default of msecs.
* Anon inodes were used by IIO without being explicitly selected. This has
been true for a long time so it clearly only effects rather unusual
configurations (rand configs)
* at91 requires the input subsytem but this wasn't explicity in the Kconfig.
* A couple of parts supported by the max1363 driver were using the wrong
iio_chan_spec arrays and hence would missreport their bit depths. This has
been there a long time and was never right so isn't a regression.
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Merge tag 'iio-for-3.16c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Third round of new stuff for IIO in the 3.16 cycle.
This (rather late) set consists only of fixes to patches earlier in the
cycle or minor fixes for other problems (such as randconfig build issues
picked up by Arnd). I've included the general minor fixes here as it is
very late in the current cycle and they can all wait for the merge window.
* Recent change to hid-sensors introduced a possible infinite loop due to a
typo. In the same series, a report interval unit read was added but in the
case where the hardware doesn't support it a value of 0 would lead to some
nasty issues. The patch sets it to the specified default of msecs.
* Anon inodes were used by IIO without being explicitly selected. This has
been true for a long time so it clearly only effects rather unusual
configurations (rand configs)
* at91 requires the input subsytem but this wasn't explicity in the Kconfig.
* A couple of parts supported by the max1363 driver were using the wrong
iio_chan_spec arrays and hence would missreport their bit depths. This has
been there a long time and was never right so isn't a regression.
This resolves the conflicts in the files:
drivers/iio/adc/Kconfig
drivers/staging/rtl8723au/os_dep/usb_ops_linux.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
New device support
* AS3935 Lightning Sensor
* MCP3426/7/8 support added to the existing MCP3422 ADC driver
* AK8963 support in the AK8975 driver
* MPU6500 support in the MPU6050 driver (the functionality that is different
is mostly not supported yet in either part).
Staging Graduations
* AD799x ADC
New functionality
* ACPI enumeration for the ak8975 driver
Cleanup / tweaks
* Use snprintf as a matter of good practice in a few additional places.
* Document *_mean_raw attributes. These have been there a while, but were
undocumented.
* Add an in kernel interface to get the mean values.
* Bug in the length of the event info mask that by coincidence wasn't yet
actually causing any problems.
* itg3000 drop an unreachable return statement.
* spear_adc cleanups (heading for a staging graduation but a few more
issues showed up in the review of these patches).
* Exynos ADC dependencies changed so it is only built when Exynos is present
or COMPILE_TEST and OF are set.
* tsl2583 cleanups.
* Some cut and paste typos in the comments of various drivers still in staging.
* Couple of minor improvements to the ST sensor drivers.
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Merge tag 'iio-for-3.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of IIO new driver, functionality and cleanups for the 3.16 cycle.
New device support
* AS3935 Lightning Sensor
* MCP3426/7/8 support added to the existing MCP3422 ADC driver
* AK8963 support in the AK8975 driver
* MPU6500 support in the MPU6050 driver (the functionality that is different
is mostly not supported yet in either part).
Staging Graduations
* AD799x ADC
New functionality
* ACPI enumeration for the ak8975 driver
Cleanup / tweaks
* Use snprintf as a matter of good practice in a few additional places.
* Document *_mean_raw attributes. These have been there a while, but were
undocumented.
* Add an in kernel interface to get the mean values.
* Bug in the length of the event info mask that by coincidence wasn't yet
actually causing any problems.
* itg3000 drop an unreachable return statement.
* spear_adc cleanups (heading for a staging graduation but a few more
issues showed up in the review of these patches).
* Exynos ADC dependencies changed so it is only built when Exynos is present
or COMPILE_TEST and OF are set.
* tsl2583 cleanups.
* Some cut and paste typos in the comments of various drivers still in staging.
* Couple of minor improvements to the ST sensor drivers.
Correct spelling typo in comment within staging/iio
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* Fix the platform data support for the at91 adc driver.
* A couple of related follow up patches get the support working again
for at91sam9260 and at91sam9g45 as the earlier patch results in a device
name change.
* A default timer value in the at91 adc driver was bonkers. Make it sane.
* Fix incorrect reporting of the integration time for the cm32181 light sensor
* Fix a missing break in the ad2s1200 driver which would have give a false
error return.
* Make sure buffer scan mask queries from userspace return 0/1 rather than
a fairly random value depending on their implementation of test_bit
* Fix leak of the i2c client and a null pointer dereference in the cm36651
driver.
* Fix a build warning on avr32 for the mxs-lradc (not exactly a critical
combination - but the issue was real).
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Merge tag 'iio-fixes-for-3.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
First found of IIO fixes for the 3.15 cycle.
* Fix the platform data support for the at91 adc driver.
* A couple of related follow up patches get the support working again
for at91sam9260 and at91sam9g45 as the earlier patch results in a device
name change.
* A default timer value in the at91 adc driver was bonkers. Make it sane.
* Fix incorrect reporting of the integration time for the cm32181 light sensor
* Fix a missing break in the ad2s1200 driver which would have give a false
error return.
* Make sure buffer scan mask queries from userspace return 0/1 rather than
a fairly random value depending on their implementation of test_bit
* Fix leak of the i2c client and a null pointer dereference in the cm36651
driver.
* Fix a build warning on avr32 for the mxs-lradc (not exactly a critical
combination - but the issue was real).
Srinivas Pandruvada