Dan Carpenter reported a static checker report and after his mail I
noticed that we actually return from function if positive value is
obtained from i2c read. This was remainder from when code was not in
separate function (which I changed during the review process).
Static checker reported
drivers/iio/temperature/mlx90614.c:167
mlx90614_iir_search()
warn: this cast is a no-op
which meant that cast before negating is useless. Dan also proposed a
solution on nicer bit operation form.
Also changed magic number to macro in process as that was confusing.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The device tree compatible strings weren't properly
registered for the pulsedlight-lidar-lite-v2 driver.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Chipset sometime updates in the middle of a reading causing it
to reset the data pointer, and causing invalid reading of previous data.
We can check for this invalid state by reading MSB of the resistance
reading that is always zero, and by also confirming the VOC_short isn't
zero.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This shouldn't actually change anything since the core calls the events
sysfs folder "events" anyways.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This shouldn't actually change anything since the core calls the events
sysfs folder "events" anyways.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This shouldn't change anything since the core calls the events folder
"events" anyways.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New device support
* APDS9960 ALS + proximity driver
* bmg160 SPI devices.
* HDC100x humidity sensors
* Holt HI-8435 threshold detector
* mma8453Q accelerometer added to the mma8452 driver
* mma86452FC and mma8653FC accelerometers added to the mma8452 driver
* mxc4005 accelerometer
* PulsedLight LIDAR
* SensorTech VZ89x volatile organic compound sensor
* UPISEMI uS5182d ALS and proximity sensors
New core functionality
* triggered events - use triggers to check for changes in threshold type
detectors on devices with out interrupt support. First user is the holt
comparator.
* chemical concentration and resistance channel types.
New driver functionality
* vf610
- buffer support.
- followup coccinelle warning fix.
Core rework
* buffers
- break out callback buffer to own module.
- move buffer implementations to a new subdirectory
* percolate the error code form iio_event_getfd out to userspace
rather than giving a missleading error later on.
Cleanups
* adddac drivers
- use BIT macro where appropriate.
* meter drivers
- use BIT macro where appropriate.
* ad7303
- add an OF match table to line up with the binding docs.
* adc128s052
- add an OF match table to line up with the binding docs.
* adf4350
- add an OF match table to line up with the binding docs
* as3935
- add an OF match table to line up with the binding docs.
* berlin2-adc
- use GENMASK and BIT for masks
- prevent attempting to sample multiple channels at once by moving a
mutex scop
- coding style cleanups
* bmg150_magn
- kconfig sort order was wrong - fix it.
* bmg160
- use i2c regmap and drop all uses of i2c_client
- separate i2c and core driver
* cc10001_adc
- kconfig sort order was wrong - fix it.
* evgen (dummy driver helper module)
- move interrupt generation to irq_work to reduce differences between
the dummy driver and real hardware drivers.
* hmc5843
- set the name dynamically rather than to a fixed value for one of the
suported parts.
- export module alias information to allow autoprobing of module.
* lpc32xx
- on failure to get resource or irq return -ENXIO as uppose to -EBUSY
* max1027
- set .of_match_table to actually allow OF style matching.
* max5821
- add MODULE_DEVICE_TABLE for OF table.
* mma8452
- refactor to separate out chip specific data.
- add freefall / motion interrupt source for devices that do their
interrupts slightly differently.
- update copywrite notice.
- leave naming of events directory in sysfs to the core
* mcp320x
- set .of_match_table so that it can be use for OF style matching.
* mlx90614
- Implement filter configuration (note the datasheet changed as a result
of the driver reviews to include the values we needed ;)
* opt3001
- drop .owner field as assigned by platform driver core.
* si7020
- replace a bitmask on the humidity values with a more correct range
check.
* stk310
- improved error handling.
- use BIT macro where appropriate and use the resulting defines
instead of magic numbers in the code.
- fix indentation
* st-sensors
- add debugfs register read hook
* tsl4531
- fix error handling in check_id
* twl6030
- fix module autoload for OF
* iio-trig-sysfs
- document add and remove attribute
* trigger in staging
- code alignment fixes.
- braces on both branches of if statement if needed for one.
* xilinx-xadc
- push interrupts into hardirq context as there isn't much in them
any more and it avoids breaking PREEMPT_RT builds due to the use
of a spinlock between the hardirq and the thread.
Tools
* event-monitor
- report unsupported events. We keep expanding what can come from drivers
so give a helpful error if one turns up in an out of date userspace
program.
* generic-buffer
- helpful message about needing to enable a channel to start the buffer.
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Merge tag 'iio-for-4.4a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle
New device support
* APDS9960 ALS + proximity driver
* bmg160 SPI devices.
* HDC100x humidity sensors
* Holt HI-8435 threshold detector
* mma8453Q accelerometer added to the mma8452 driver
* mma86452FC and mma8653FC accelerometers added to the mma8452 driver
* mxc4005 accelerometer
* PulsedLight LIDAR
* SensorTech VZ89x volatile organic compound sensor
* UPISEMI uS5182d ALS and proximity sensors
New core functionality
* triggered events - use triggers to check for changes in threshold type
detectors on devices with out interrupt support. First user is the holt
comparator.
* chemical concentration and resistance channel types.
New driver functionality
* vf610
- buffer support.
- followup coccinelle warning fix.
Core rework
* buffers
- break out callback buffer to own module.
- move buffer implementations to a new subdirectory
* percolate the error code form iio_event_getfd out to userspace
rather than giving a missleading error later on.
Cleanups
* adddac drivers
- use BIT macro where appropriate.
* meter drivers
- use BIT macro where appropriate.
* ad7303
- add an OF match table to line up with the binding docs.
* adc128s052
- add an OF match table to line up with the binding docs.
* adf4350
- add an OF match table to line up with the binding docs
* as3935
- add an OF match table to line up with the binding docs.
* berlin2-adc
- use GENMASK and BIT for masks
- prevent attempting to sample multiple channels at once by moving a
mutex scop
- coding style cleanups
* bmg150_magn
- kconfig sort order was wrong - fix it.
* bmg160
- use i2c regmap and drop all uses of i2c_client
- separate i2c and core driver
* cc10001_adc
- kconfig sort order was wrong - fix it.
* evgen (dummy driver helper module)
- move interrupt generation to irq_work to reduce differences between
the dummy driver and real hardware drivers.
* hmc5843
- set the name dynamically rather than to a fixed value for one of the
suported parts.
- export module alias information to allow autoprobing of module.
* lpc32xx
- on failure to get resource or irq return -ENXIO as uppose to -EBUSY
* max1027
- set .of_match_table to actually allow OF style matching.
* max5821
- add MODULE_DEVICE_TABLE for OF table.
* mma8452
- refactor to separate out chip specific data.
- add freefall / motion interrupt source for devices that do their
interrupts slightly differently.
- update copywrite notice.
- leave naming of events directory in sysfs to the core
* mcp320x
- set .of_match_table so that it can be use for OF style matching.
* mlx90614
- Implement filter configuration (note the datasheet changed as a result
of the driver reviews to include the values we needed ;)
* opt3001
- drop .owner field as assigned by platform driver core.
* si7020
- replace a bitmask on the humidity values with a more correct range
check.
* stk310
- improved error handling.
- use BIT macro where appropriate and use the resulting defines
instead of magic numbers in the code.
- fix indentation
* st-sensors
- add debugfs register read hook
* tsl4531
- fix error handling in check_id
* twl6030
- fix module autoload for OF
* iio-trig-sysfs
- document add and remove attribute
* trigger in staging
- code alignment fixes.
- braces on both branches of if statement if needed for one.
* xilinx-xadc
- push interrupts into hardirq context as there isn't much in them
any more and it avoids breaking PREEMPT_RT builds due to the use
of a spinlock between the hardirq and the thread.
Tools
* event-monitor
- report unsupported events. We keep expanding what can come from drivers
so give a helpful error if one turns up in an out of date userspace
program.
* generic-buffer
- helpful message about needing to enable a channel to start the buffer.
drivers/iio/light/apds9960.c:1125:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
CC: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/light/apds9960.c:986:1-4: WARNING: end returns can be simpified
Simplify a trivial if-return sequence. Possibly combine with a
preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci
CC: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/adc/vf610_adc.c:766:1-4: WARNING: end returns can be simpified and declaration on line 755 can be dropped
Simplify a trivial if-return sequence. Possibly combine with a
preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci
CC: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for UPISEMI us5182d als and proximity sensor.
Supports raw readings.
Data sheet for this device can be found here:
http://www.upi-semi.com/temp/uS5182D-DS-P0103-temp.pdf
Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for VZ89X sensors VOC and CO2 reporting channels in
percentage which can be converted to part per million.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There are air quality sensors that report data back in parts per million
of VOC (Volatile Organic Compounds) which are usually indexed from CO2
or another common pollutant.
This patchset adds an IIO_CONCENTRATION type that returns a percentage
of substance because no other channels types fit this use case.
Modifiers for IIO_MOD_CO2 and IIO_MOD_VOC gas types are defined.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This doesn't actually change anything since the core names the sysfs folder
for the iio event attributes "events" anyways. It only leaves the job to the
core.
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
MMA8652FC and MMA8653FC don't provide the transient interrupt source, so
the motion interrupt source is used by providing a new iio_chan_spec
definition, so that other supported devices are not affected by this.
Datasheets for the newly supported devices are available at Freescale's
website:
http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8652FC.pdfhttp://cache.freescale.com/files/sensors/doc/data_sheet/MMA8653FC.pdf
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds the freefall / motion interrupt source definitions to the driver.
It is used in this series' next patch, for chips that don't support the
transient interrupt source.
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds support for the 10 bit version if Freescale's accelerometers
of this series. The datasheet is available at Freescale's website:
http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8453Q.pdf
It creates a devicetree bindings file to document the new functionality
and removes the driver from the trivial-devices list.
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds a struct mma_chip_info to hold data that will remain specific to
the chip in use. It is provided during probe() and linked in
struct of_device_id.
Also this suggests that the driver is called "mma8452" and now handles the
MMA8452Q device, but is not limited to it.
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for the HDC100x temperature and humidity sensors
including the resistive heater element.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Core changes:
- Root out the wrapper devm_gpiod_get() and gpiod_get() etc
versions of the descriptor calls that did not use the flags
argument on the end. This was around for too long and eventually
Uwe Kleine-König took the time to clean it out and the last
users are removed along with the macros in this tag. In several
cases the use of flags simplifies the code. For this reason we
have (ACKed) patches hitting in DRM, IIO, media, NFC, USB+PHY
up until we hammer in the nail with removing the macros.
- Add a fat document describing how much ready-made GPIO stuff
we have i the kernel to discourage people from reinventing
a square wheel in userspace, as so often happens.
- Create a separate lockdep class for each instance of a GPIO
IRQ chip instead of using one class for all chips, as the current
code will not work with systems with several GPIO chips doing
lockdep debugging.
- Protect against driver unloading also when a GPIO line is only
used as IRQ for the GPIOLIB_IRQCHIP helpers.
- If the GPIO chip has no designated owner, assign the parent
device driver owner as owner.
- Consolidation of chained IRQ handler install/remove replacing
all call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a
combined call to irq_set_chained_handler_and_data(). This
series was created by Thomas Gleixner after the problem was
observed by Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which
is way cleaner.
- Tglx and Jiang Liu wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs
from IRQ numbers. The goal is to get rid of the irq number
from the handlers in the IRQ flow which is nice.
- Rob Herring killed off the set_irq_flags() for all GPIO
drivers. This was an ARM specific function that is replaced
with the generic irq_modify_status() where special flags
are actually needed.
- When an OF node has a pin range for its GPIOs, return
-EPROBE_DEFER if the pin controller isn't available.
Pretty logical, yet needed to be fixed.
- If a driver using GPIOLIB_IRQCHIP has its own
irq_*_resources call back, then call these instead of the
defaults provided by the GPIOLIB.
- Fix an undocumented ABI hole: named GPIOs were not
properly documented.
Driver improvements:
- Add get_direction() support to the generic GPIO driver, it's
strange that we didn't have that before.
- Make it possible to have input-only GPIO chips using the
generic GPIO driver.
- Clean out platform data support from the Emma Mobile (EM)
driver
- Finegrained runtime PM support for the RCAR driver.
- Support r8a7795 (R-car H3) in the RCAR driver.
- Support interrupts on GPIOs 16 thru 31 in the DaVinci driver.
- Some consolidation and new support in the MPC8xxx driver,
we now support MPC5125.
- Preempt-RT-friendly patches: the OMAP, MPC8xxx, drivers uses raw
spinlocks making it work better with the realime patches.
- Interrupt support for the EXTRAXFS GPIO driver.
- Make the ETRAXFS GPIO driver support also ARTPEC-3.
- Interrupt and wakeup support for the BRCMSTB driver, also for
wakeup from S5 cold boot.
- Mask MXC IRQs during suspend.
- Improve OMAP2 GPIO set_debounce() to work according to spec.
- The VF610 driver handles IRQs properly.
New drivers:
- ZTE ZX GPIO driver.
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Merge tag 'gpio-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.3 kernel cycle.
There is quite a lot going on in the GPIO subsystem this merge window,
so the main matter is decribed below.
The hits in other subsystems when making the GPIO flags optional are
all ACKed by their respective subsystem maintainers.
Core changes:
- Root out the wrapper devm_gpiod_get() and gpiod_get() etc versions
of the descriptor calls that did not use the flags argument on the
end. This was around for too long and eventually Uwe Kleine-König
took the time to clean it out and the last users are removed along
with the macros in this tag. In several cases the use of flags
simplifies the code. For this reason we have (ACKed) patches
hitting in DRM, IIO, media, NFC, USB+PHY up until we hammer in the
nail with removing the macros.
- Add a fat document describing how much ready-made GPIO stuff we
have i the kernel to discourage people from reinventing a square
wheel in userspace, as so often happens.
- Create a separate lockdep class for each instance of a GPIO IRQ
chip instead of using one class for all chips, as the current code
will not work with systems with several GPIO chips doing lockdep
debugging.
- Protect against driver unloading also when a GPIO line is only used
as IRQ for the GPIOLIB_IRQCHIP helpers.
- If the GPIO chip has no designated owner, assign the parent device
driver owner as owner.
- Consolidation of chained IRQ handler install/remove replacing all
call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a combined
call to irq_set_chained_handler_and_data().
This series was created by Thomas Gleixner after the problem was
observed by Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which is
way cleaner.
- Tglx and Jiang Liu wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs from
IRQ numbers. The goal is to get rid of the irq number from the
handlers in the IRQ flow which is nice.
- Rob Herring killed off the set_irq_flags() for all GPIO drivers.
This was an ARM specific function that is replaced with the generic
irq_modify_status() where special flags are actually needed.
- When an OF node has a pin range for its GPIOs, return -EPROBE_DEFER
if the pin controller isn't available. Pretty logical, yet needed
to be fixed.
- If a driver using GPIOLIB_IRQCHIP has its own irq_*_resources call
back, then call these instead of the defaults provided by the
GPIOLIB.
- Fix an undocumented ABI hole: named GPIOs were not properly
documented.
Driver improvements:
- Add get_direction() support to the generic GPIO driver, it's
strange that we didn't have that before.
- Make it possible to have input-only GPIO chips using the generic
GPIO driver.
- Clean out platform data support from the Emma Mobile (EM) driver
- Finegrained runtime PM support for the RCAR driver.
- Support r8a7795 (R-car H3) in the RCAR driver.
- Support interrupts on GPIOs 16 thru 31 in the DaVinci driver.
- Some consolidation and new support in the MPC8xxx driver, we now
support MPC5125.
- Preempt-RT-friendly patches: the OMAP, MPC8xxx, drivers uses raw
spinlocks making it work better with the realime patches.
- Interrupt support for the EXTRAXFS GPIO driver.
- Make the ETRAXFS GPIO driver support also ARTPEC-3.
- Interrupt and wakeup support for the BRCMSTB driver, also for
wakeup from S5 cold boot.
- Mask MXC IRQs during suspend.
- Improve OMAP2 GPIO set_debounce() to work according to spec.
- The VF610 driver handles IRQs properly.
New drivers:
- ZTE ZX GPIO driver"
* tag 'gpio-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (87 commits)
Revert "gpio: extraxfs: fix returnvar.cocci warnings"
gpio: tc3589x: use static container helper
gpio: xlp: fix error return code
gpio: vf610: handle level IRQ's properly
gpio: max732x: Fix error handling in probe()
gpio: omap: fix clk_prepare/unprepare usage
gpio: omap: protect regs access in omap_gpio_irq_handler
gpio: omap: fix omap2_set_gpio_debounce
gpio: omap: switch to use platform_get_irq
gpio: omap: remove wrong irq_domain_remove usage in probe
gpiolib: add description for gpio irqchip fields in struct gpio_chip
gpio: extraxfs: fix returnvar.cocci warnings
gpiolib: irqchip: use different lockdep class for each gpio irqchip
gpio/grgpio: fix deadlock in grgpio_irq_unmap()
Documentation: gpio: consumer: describe active low property
gpio: mxc: fix section mismatch warning
gpio/mxc: mask gpio interrupts in suspend
gpio: omap: Fix missing raw locks conversion
gpio: brcmstb: support wakeup from S5 cold boot
gpio: brcmstb: Add interrupt and wakeup source support
...
Add iio trigger for the data ready interrupt that signals new
measurements for the X, Y and Z axes.
Signed-off-by: Teodora Baluta <teodora.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds support for buffered readings for the 3-axis
accelerometer mxc4005.
Signed-off-by: Teodora Baluta <teodora.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds support for Memsic MXC4005XC 3-axis accelerometer. The
current implementation is a minimal one as it adds raw readings for the
three axes and setting scale from userspace.
Signed-off-by: Teodora Baluta <teodora.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch separates the core driver using regmap and the i2c driver
which creates the i2c regmap. Also in the Kconfig file BMG160 and
BMG160_I2C are separate now.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for the PulsedLight LIDAR rangefinder sensor which allows
high speed (over 300Hz) distance measurements using Barker Coding within
40 meter range.
Support only tested on the "blue label" rev 2, but may work using low
sample frequencies on the original version.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The tsl4531_check_id() function returned 1 on "found" and 0 on "not
found" and negative error codes on failure. This was non-standard and
bug prone. The caller treated all non-zero values including error codes
as "found".
This patch fixes it by changing the tsl4531_check_id() to return zero on
success or a negative error code, and updates the caller.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
APDS9960 is a combination of ALS, proximity, and gesture sensors.
This patch adds support for these functions along with gain control,
integration time, and event thresholds.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds support for IIO buffer to the Vybrid ADC driver.
IIO triggered buffer infrastructure along with iio sysfs trigger
is used to leverage continuous sampling support provided by the
ADC block.
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/light/opt3001.c:796:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
CC: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Support triggered events.
This is useful for chips that don't have their own interrupt sources.
It allows to use generic/standalone iio triggers for those drivers.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Implemented Low pass 3db frequency filter which configures
FIR and IIR values within the configuration register of EEPROM.
For more standardized interface we have fixed the FIR value
to 1024, while changes in IIR value are directly connected to
filter responses. The new datasheet version will provide a
simplified table (also in reStructured text format below) with
this change, to provide quick overview of possible settings.
Below sensor timings (bandwidth) are calculated for 3db frequency
low pass filter.
+--------------------+-----------------+
| Filter setting (%) | Band width (Hz) |
| (rounded to 1.0) | |
+====================+=================+
| 13 | 0.15 |
+--------------------+-----------------+
| 17 | 0.20 |
+--------------------+-----------------+
| 25 | 0.31 |
+--------------------+-----------------+
| 50 | 0.77 |
+--------------------+-----------------+
| 57 | 0.86 |
+--------------------+-----------------+
| 67 | 1.10 |
+--------------------+-----------------+
| 80 | 1.53 |
+--------------------+-----------------+
| 100 | 7.23 |
+--------------------+-----------------+
The diff is made towards togreg branch. Added myself to MAINTAINERS and
authors as per discussion with Jonathan.
Signed-off-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The maximum possible value for the relative humidity is 55575 (100%RH).
This value, if shifted right by 2 bits, uses 14 bits and masking it with
a 12 bit mask removes 2 meaningful bits.
The masking has been replaced with a range check that sets the minimum
value at 786 (0%RH) and the maximum at 13893 (99.998%RH).
Signed-off-by: Nicola Corna <nicola@corna.info>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver has an OF id table but the .of_match_table is not set so
the SPI core can't do an OF style match and the table was unused.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Michael Welling <mwelling@ieee.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The SPI core always reports the MODALIAS uevent as "spi:<modalias>"
regardless of the mechanism that was used to register the device
(i.e: OF or board code) and the table that is used later to match
the driver with the device (i.e: SPI id table or OF match table).
So drivers needs to export the SPI id table and this be built into
the module or udev won't have the necessary information to autoload
the needed driver module when the device is added.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Documentation/devicetree/bindings/iio/dac/ad7303.txt DT binding doc
lists "adi,ad7303" as a compatible string but the corresponding driver
does not have an OF match table. Add the table to the driver so the SPI
core can do an OF style match.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Documentation/devicetree/bindings/iio/frequency/adf4350.txt DT binding
doc lists "adi,adf4350" or "adi,adf4351" as compatible strings but the
corresponding driver does not have an OF match table. Add the table to the
driver so the SPI core can do an OF style match.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt DT binding
doc lists "ti,adc128s052" or "ti,adc122s021" as compatible strings but the
corresponding driver does not have an OF match table. Add the table to the
driver so the SPI core can do an OF style match.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Documentation/devicetree/bindings/iio/proximity/as3935.txt DT binding
doc lists "ams,as3935" as a compatible string but the corresponding driver
does not have an OF match table. Add the table to the driver so the SPI
core can do an OF style match.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver has an OF id table but the .of_match_table is not set so
the SPI core can't do an OF style match and the table was unused.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver currently registers a pair of irq handlers using
request_threaded_irq(), however the synchronization mechanism between the
hardirq and the threadedirq handler is a regular spinlock.
Unfortunately, this breaks PREEMPT_RT builds, where a spinlock can sleep,
and is thus not able to be acquired from a hardirq handler. This patch gets
rid of the threaded handler and pushes all interrupt handling into the
hardirq context, and uses request_irq().
To validate that this change has no impact on RT performance, here are
cyclictest values with no processes running:
$ sudo cyclictest -S -m -p 98
policy: fifo: loadavg: 0.00 0.01 0.05 1/174 2539
T: 0 ( 1405) P:98 I:1000 C:167010520 Min: 9 Act: 12 Avg: 12 Max: 75
T: 1 ( 1862) P:98 I:1500 C:111340339 Min: 9 Act: 12 Avg: 12 Max: 73
Then, all xadc raw handles were accessed in a continuous loop via
/sys/bus/iio/devices/iio:device0:
$ sudo cyclictest -S -m -p 98
policy: fifo: loadavg: 7.84 7.70 7.63 3/182 4260
T: 0 ( 2559) P:98 I:1000 C:241557018 Min: 11 Act: 18 Avg: 21 Max: 74
T: 1 ( 2560) P:98 I:1500 C:161038006 Min: 10 Act: 21 Avg: 20 Max: 73
Signed-off-by: Xander Huff <xander.huff@ni.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This makes the error from iio_event_getfd() percolate up
to userspace properly so we can know for sure there is no
events on this device (-ENODEV returned). Before this patch
we would bail out looking for the unsupported events on the
erroneous (negative) file descriptor.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds a debugfs hook to read/write registers in the ST
sensors using debugfs. Proved to be awesome help when trying
to debug why IRQs do not arrive.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Crt Mori