The user (or an init script) may setup RShunt via sysfs after the
driver was initialized, for instance based on the EEPROM contents
of a modular probe. The calibration register must be set accordingly.
Signed-off-by: Marc Titinger <marc.titinger@baylibre.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Ensure optional regulator is properly disabled when present.
Fixes: 63d5d525cb ("iio:magnetometer:ak8975: power regulator support")
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
flush_scheduled_work is scheduled for deprecation.
Replace cancel_delayed_work and flush_scheduled_work with
cancel_delayed_work_sync instead to ensure there is no pending or
running work item.
Since there is only one work item, chip->poweroff_work, there are
no further dependencies of flush_scheduled_work().
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Ensure optional regulator is properly disabled when present.
Fixes: 3145229f91 ("iio:pressure:ms5611: power regulator support")
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
When using ACPI, id is NULL and the current code automatically
defaults name to NULL and chip id to 0. We should instead use
the data provided in the ACPI device table.
Fixes: c816d9e7a5 ("iio: imu: mpu6050: fix possible NULL dereferences")
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Reviewed-By: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ADC is a 6-channel signal-ended 10-bit Successive
Approximation Register (SAR) A/D Converter.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
What is this autosleep?
-----------------------
It slows down the device after x seconds of inactivity. The thing is, we have
really achieved almost the same by runtime pm.
differnces are:
autosleep
* uses more power during inactivity
* the first read after inactivity slightly faster
* complicated to understand for the user
* no documented sysfs interface (afaik)
* complicated to read and maintain
runtime pm
* already merged in mma8452
* uses less power during inactivity
* first read after inactivity slower
* easy to use. well documented.
* easy to maintain and understand
The two approaches solve the same problem. runtime pm has more advantages
than autosleep and comes quite close to it's behaviour anyways. As I see it,
autosleep, even if somehow supported, would never be used anyways.
So resolve this issue by "ignoring" autosleep.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Reviewed-by: Martina Kepplinger <martina.novakovic@zoho.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This was forgotten about and is added for consistency now
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add base support for the 10-bit DAC peripheral found
on NXP LPC18xx/43xx SoCs.
This is a minimal driver that does not support DMA or
interrupts.
User manual with register description can be found on:
LPC18xx: www.nxp.com/documents/user_manual/UM10430.pdf
LPC43xx: www.nxp.com/documents/user_manual/UM10503.pdf
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add base support for the 10-bit SAR ADC peripheral found
on NXP LPC18xx/43xx SoCs.
This is a minimal driver that does not support burst mode,
interrupts, DMA or hardware triggers.
User manual with register description can be found on:
LPC18xx: www.nxp.com/documents/user_manual/UM10430.pdf
LPC43xx: www.nxp.com/documents/user_manual/UM10503.pdf
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
It is often the case that the driver wants to be sure a device stays
in direct mode while it is executing a task or series of tasks. To
accomplish this today, the driver performs this sequence: 1) take the
device state lock, 2) verify it is not in a buffered mode, 3) execute
some tasks, and 4) release that lock.
This patch introduces a pair of helper functions that simplify these
steps and make it more semantically expressive.
iio_device_claim_direct_mode()
If the device is not in any buffered mode it is guaranteed
to stay that way until iio_release_direct_mode() is called.
iio_device_release_direct_mode()
Release the claim. Device is no longer guaranteed to stay
in direct mode.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds support for Freescale's (now NXP's) FXLS8471Q accelerometer.
We use MMA8451Q's configuration because for what the driver supports,
FXLS8471Q is the same.
Support for FXLS8471Q's features (fast SPI interface and a larger FIFO,
among others) can be added to this driver anytime.
See it's datasheet for the details:
http://cache.nxp.com/files/sensors/doc/data_sheet/FXLS8471Q.pdf
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit adds support for STMicroelectronics h3lis331dl high-g
accelerometer. The datasheet for this device can be found here:
http://www.st.com/web/en/resource/technical/document/
datasheet/DM00053090.pdf
Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Reviewed-by: Denis Ciocca <denis.ciocca@st.com>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The devres.o gets linked if HAS_IOMEM is present so on ARCH=um
allyesconfig (COMPILE_TEST) failed with:
drivers/built-in.o: In function `at91_adc_probe':
at91-sama5d2_adc.c:(.text+0x48f548): undefined reference to `devm_ioremap_resource'
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fix possible null dereferencing of i2c and spi driver data.
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds support for runtime power management and, if configured, activates
automatic standby after 2 seconds of inactivity.
Inactivity means no read of acceleration values and no events triggered or
activated.
If CONFIG_PM is not set, this doesn't change anything for existing users.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The devices' config registers can only be changed in standby mode.
Up until now the driver just held the device *always* active, so for
changing a config it was *always* necessary to switch to standby.
For upcoming support for runtime pm, the device can as well be in standby
mode. Instead of putting runtime pm functions in there, just keep the
device in standby if it already is. This section is protected by a lock
after all.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
fix checkpatch issues like "space before tabs", too long lines or alignment.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for an optional regulator which, if found into device-tree,
will power on device at probing time.
The regulator is declared into ak8975 DTS entry as a "vdd-supply" property.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
ak_def_array bounds are not properly checked in case of ACPI matching
failure. GCC warns with the following message at line 799:
‘chipset’ may be used uninitialized in this function.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for setting and retrieving OverSampling Rate independently for
each of the temperature and pressure channels. This allows userspace to
fine tune hardware sampling process according to the following tradeoffs :
* the higher the OSR, the finer the resolution ;
* the higher the OSR, the lower the noise ;
BUT:
* the higher the OSR, the larger the drift ;
* the higher the OSR, the longer the response time, i.e. less samples per
unit of time.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add device-tree ID tables and document bindings.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Change i2c_check_functionality condition check return from ENOTSUPP to
EOPNOTSUPP which is now the standard return code.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Palmas gpadc IRQs are nested threaded and this flag is not required for nested
irqs anymore, since commit 3c646f2c6a ("genirq: Don't suspend nested_thread
irqs over system suspend") was merged.
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Previously most drivers that used a i2c_check_functionality() check
condition required various error codes on failure. This patchset
converts to a standard of -EOPNOTSUPP
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Allow setting of the x/y/z axes calibration offsets for the gyroscope
and accelerometer.
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
replace msleep(INV_MPU6050_REG_UP_TIME) with usleep_range calls
due to fact the wait time is under 20 milliseconds.
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add driver support for DAC peripheral on Vybrid SoC.
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
These are generally for devlopment use only, remove these
from performance-critical code, convert to dev_dbg elswhere.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Group of probably overly rigorous whitespace and code cleanups.
- Alphabetize includes
- Assign to variables in the order they are defined
- Alignment issues
- Group alike statements together
- Use helper macros
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for the TI family of digital potentiometers.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
removed several trailing whitespaces before assignment operations
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for an optional regulator which, if found into device-tree,
will power on device at probing time.
The regulator is declared into ms5611 DTS entry as a "vdd-supply" property.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Use name of probed device instead of driver's one when registering device.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Computation of sens2 was wrong and is fixed by this patch, sens2 should be:
2 * (t - 2000)^2
See page 8 of ms5607 datasheet here:
http://www.meas-spec.com/product/pressure/MS5607-02BA03.aspx
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This makes code consistent around inv_mpu6050 driver and
fixes the following checkpatch.pl warning:
CHECK: Alignment should match open parenthesis
Note that there were few cases were it was not possible to
fix this due to making the line too long, but we can live with that.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following checkpatch.pl warning:
WARNING: suspect code indent for conditional statements (8, 24)
+ if (kfifo_len(&st->timestamps) >
[...]
+ goto flush_fifo;
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following checkpatch.pl warning:
ERROR: space prohibited before that ',' (ctx:WxE)
.shift = 0 ,
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fixes the following checkpatch warning:
CHECK: Unnecessary parentheses around cpm->package.elements[i]
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following checkpatch.pl warnings:
* WARNING: Missing a blank line after declarations
* CHECK: Blank lines aren't necessary before a close brace '}'
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following checkpatch warning:
* WARNING: Comparisons should place the constant
on the right side of the test
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Acked-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The preffered style for long (multi-line) comments is:
/*
* this is a multiline
* comment
*/
This also fixes checkpatch.pl warning:
WARNING: Block comments use * on subsequent lines
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replaced i2c_smbus_read_i2c_block_data() with regmap_bulk_read()
function call. This is to make the driver code more consistent.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch moves hmc5843 driver from staging/iio/magnetometer
to iio/magnetometer, updates the corresponding Makefiles and
moves the hmc5843* entries to the 'Industrial I/O support ->
Magnetometer sensors' menu.
Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Cc: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
