Drop legacy twl4030_get_madc_conversion() method. It has been
used by drivers to get madc data before it conversion to IIO
API. There are no users in the mainline kernel anymore.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for STM32H7 Analog to Digital Converter. It has up
to 20 external channels, resolution ranges from 8 to 16bits.
Either bus or asynchronous adc clock may be used.
Add registers & bitfields definition. Also add new configuration
options to enter/exit powerdown and perform self-calibration.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
STM32F4 requires one clock per ADC instance for register access. But,
newer version of ADC hardware block have common bus clock for all
instances (per instance driver isn't responsible for getting it).
So, make it optional by default. Still, enforce it's required on STM32F4.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Prepare support for stm32h7 adc variant by introducing compatible
configuration data.
Move STM32F4 specific stuff to compatible data structure:
- registers & bit fields
- input channels data
- start/stop procedures
- trigger definitions
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Analog clock input is mandatory on stm32f4. But newer version of
ADC hardware block allow to select either bus clock or asynchronous
clock, for analog circuitry.
So, make it optional by default, but enforce clk presence on stm32f4.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
meson_sar_adc_clear_fifo passes a 0 as value-pointer to regmap_read().
In case of the meson-saradc driver this ends up in regmap_mmio_read(),
where the value-pointer is de-referenced unconditionally to assign the
value which was read.
Fix this by passing an actual pointer, even though all we want to do is
to discard the value.
As a side-effect this fixes a sparse warning ("Using plain integer as
NULL pointer") as reported by Paolo Cretaro.
Fixes: 3adbf34273 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs")
Reported-by: Paolo Cretaro <paolocretaro@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
When a multiplexer changes how an iio device behaves (for example
by feeding different signals to an ADC), this driver can be used
to create one virtual iio channel for each multiplexer state.
Depends on the generic multiplexer subsystem.
Cache any ext_info values from the parent iio channel, creating a private
copy of the ext_info attributes for each multiplexer state/channel.
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Extend the inkern api with functions for reading and writing ext_info
of iio channels.
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In case of error, the function devm_ioremap() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test. Also add NULL test for iores.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
INA226/230/231 has integration times per voltage channel and common
averaging setting for both channels, while the INA219/220 only has a
combined integration time/averaging setting per channel.
Only expose the averaging attribute for the INA226, and expose the correct
integration times for the INA219.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fix sparse warning "symbol foo was not declared. Should it be static?"
for the following symbols:
mx23_lradc_adc_irq_names
mx28_lradc_adc_irq_names
iio_dev_attr_in_voltage0_scale_available
iio_dev_attr_in_voltage1_scale_available
iio_dev_attr_in_voltage2_scale_available
iio_dev_attr_in_voltage3_scale_available
iio_dev_attr_in_voltage4_scale_available
iio_dev_attr_in_voltage5_scale_available
iio_dev_attr_in_voltage6_scale_available
iio_dev_attr_in_voltage7_scale_available
iio_dev_attr_in_voltage10_scale_available
iio_dev_attr_in_voltage11_scale_available
iio_dev_attr_in_voltage12_scale_available
iio_dev_attr_in_voltage13_scale_available
iio_dev_attr_in_voltage14_scale_available
iio_dev_attr_in_voltage15_scale_available
Signed-off-by: Paolo Cretaro <paolocretaro@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This reverts commit 61305664a5.
This commit was applied prematurely and will break some existing
situations where the signal is inverted as part of voltage level
conversions.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Starting from MPU6500, accelerometer dlpf is set in a separate
register named ACCEL_CONFIG_2.
Add this new register in the map and set it for the corresponding
chips.
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Flags for shared channel attributes should be set on all channels of a
channel set. I.e. SAMP_FREQUENCY and OVERSAMPLING_RATIO are set on the
in_voltage{0,1} channels, thus should be set on in_power, in_current.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
C syntax allows apersands when initializing structures fields with
function pointers, but in Linux sources ampersands are normally not used
in thix context.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This is no longer needed as the real problem was interrupt flags
not getting passed properly from device tree to the cpcap-core.c
mfd driver. This got fixed with commit ac89473213 ("mfd: cpcap:
Fix interrupt to use level interrupt") So let's remove ADC
interrupt specific the quirk.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
It seems that "MC13783 Power Management and Audio Ciruit User's Guide"
MC1378UG.pdf documents several similar components as in the CPCAP PMIC.
Chapter "9.5.5 Die Temperature and UID" says that the die temperature
value is 282 at 25C with LSB of -1.14C. Converting CPCAP PMIC channel3
values with following seems to produce values that make sense for a
PMIC die:
temperature = 25000 + ((regval - 282) * 114)
As we don't have any other documentation, let's assume the die
temperature is unconfigured in the Motorola mapphone Linux kernel
and the current temperature conversion table should be only used
for the battery thermistor and not for the die temperature.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Looking at the register dumps from Android kernel on droid 4, I noticed
the values with the mainline kernel don't match. Let's fix this by
initializing the ADC registers to what Android does.
For getting correct values from the battery thermistor, we need to
toggle the CPCAP_BIT_THERMBIAS_EN when measuring battery temperature
to get correct battery temperatures. And looks like we also need to
wait a little bit before reading the battery temperature as otherwise
the results are inaccurate.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Jonathan writes:
First set of new device support, features and cleanups for IIO in the 4.13 cycle
Two entirely new drivers in here plus the usual range of cleanups and features.
New device support
* ad5064
- add ltc2631, ltc2633 and ltc2635 support.
* bma180
- trivial support for bma250e (new id)
* hid-sensor-rotation
- add relative orientation and geometric orientation support.
* isl29028
- add isl29030 support (its effectively the same part from a driver point of
view)
* maxim_thermocouple
- add max31856 id.
* meson-saradc
- add meson8b SoC adc support.
* ti-adc084s021
- new driver and bindings.
* ti-adc108s102
- new driver and bindings.
Staging graduations
* isl29028
Features
* bma180
- ACPI enumeration for BMA250E which is used in various x86 tablets.
* hi8453
- add raw access rather than only events.
* hid-sensor-hub
- Implement batch mode in which we can set a threshold on the amount of time
between data coming from the fifos. This is the first device to do this
rather than use a watershed on the number of samples.
* hts221
- power management support
* lsm6dsx
- add system power management support.
* rpr0521
- sampling frequency read / write
* stm32-trigger
- add support for TRG02 triggers.
* tsl2583
- runtime power management support.
Cleanups
* core
- inkern: fix a double unlock in iio_read_available_channel_raw when raw
value doesn't appear to be raw (error path).
- fixup accidental sizeof pointer in iio_device_add_mask_type.
* docs
- fix an accidental duplicated line in sysfs-bus-iio-meas-spec.
* tools
- use local include/uapi headers to ensure always up to date.
- increase length of allowed trigger names.
* ad9834
- symbolic to octal permissions.
* ade7753
- symbolic to octal permissions.
- fix indentation
* ade7754
- symbolic to octal permissions.
* ade7758
- symbolic to octal permissions.
- ade7854
- symbolic to octal permissions.
* as3935
- move out of storm check to given consistent results for raw and processed
values.
* bmp280
- fix bme280 naming in Kconfig help.
* hi8435
- avoid garbage on event after enable.
- add missing in_voltage_sensing_mode_available to list possible enum options.
- handle the reset gpio with the obvious polarity rather than relying on
DT to provide it correctly.
* hid-sensors
- fix a wrong error path scrubbing of return values.
* hid-sensors-accel
- drop static on a local variable
* hid-sensors-rotation
- Add missing scale and offset property parsing support.
* ina2xx
- Fix a bad use of GENMASK and some typos and whitespace issues.
* isl29018
- only declare the ACPI table when ACPI is enabled.
* isl29028
- fix proximity sleep times.
* lsm6dsx
- replace ifdef CONFIG_PM with __maybe_unused to avoid the complexity of
dealing with the various PM config variables.
* meson-saradc
- mark meson_sar_adc_data static and const.
* rcar-gyroadc
- derive the interface clock speed from the fck clock on the basis they are
the same actual clock.
- drop the now unused if clock from the bindings.
* rpr0521
- disable sensor when marked as such rather than always enabling it.
- poweroff if probe fails and we can talk to device.
- make sure device powered off when it doesn't need to be on.
- use sizeof rather than hardcoded size on value read.
- whitespace fixup.
- reorder channel numbers ready for buffered support which didn't quite
make this pull request.
* st-accel
- fix platform data initialization to allow remove and reprobe.
* st-pressure
- fix platform data initialization to allow remove and reprobe.
* tsl2x7x
- S_IRUGO, S_IWUSR to octal values
- rename driver for consistency with more recent drivers
- drop FSF mailing address
- replace DEVICE_ATTR macros with the shorter DEVICE_ATTR_RW form and
relevant function renames.
* zpa2326
- report an error for consistency with other error paths.
Jonathan writes:
First set of IIO fixes in the 4.12 cycle.
Matt finally set up the lightning storm he needed to test the as3935.
* core
- Fix a null pointer deference in iio_trigger_write_current when changing
from a non existent trigger to another non existent trigger.
* a3935
- Recalibrate the RCO after resume.
- Fix interrupt mask so that we actually get some interrupts.
- Use iio_trigger_poll_chained as we aren't in interrupt context.
* am335x
- Fix wrong allocation size provided for private data to iio_device_alloc.
* bcm_iproc
- Swapped primary and secondary isr handlers.
* ltr501
- Fix swapped als/ps register fields when enabling interrupts
* max9611
- Wrong scale factor for the shunt_resistor attribute.
* sun4-gpadc
- Module autoloading fixes by adding the device table declarations.
- Fix parent device being used in devm functions.
For the sake of DT binding stability, this IIO driver is a child of an
MFD driver for Allwinner A10, A13 and A31 because there already exists a
DT binding for this IP. The MFD driver has a DT node but the IIO driver
does not.
The IIO device registers the temperature sensor in the thermal framework
using the DT node of the parent, the MFD device, so the thermal
framework could match the phandle to the MFD device in the DT and the
struct device used to register in the thermal framework.
devm_thermal_zone_of_sensor_register was previously used to register the
thermal sensor with the parent struct device of the IIO device,
representing the MFD device. By doing so, we registered actually the
parent in the devm routine and not the actual IIO device.
This lead to the devm unregister function not being called when the IIO
module driver is removed. It resulted in the thermal framework still
polling the get_temp function of the IIO module while the device doesn't
exist anymore, thus generated a kernel panic.
Use the non-devm function instead and do the unregister manually in the
remove function.
Fixes: d1caa99055 ("iio: adc: add support for Allwinner SoCs ADC")
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Reported-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This is an upstream port of an IIO driver for the TI ADC108S102 and
ADC128S102. The former can be found on the Intel Galileo Gen2 and the
Siemens SIMATIC IOT2000. For those boards, ACPI-based enumeration is
included.
Due to the lack of regulators under ACPI, we hard-code the voltage
provided to the VA pin of the ADC to 5 V, the value used on Galileo and
IOT2000. For DT usage, the regulator "vref-supply" provides this
information. Note that DT usage has not been tested.
Original author: Bogdan Pricop <bogdan.pricop@emutex.com>
Ported from Intel Galileo Gen2 BSP to Intel Yocto kernel:
Todor Minchev <todor@minchev.co.uk>.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Get rid of #ifdef CONFIG_PM by adding __maybe_unused macro to
st_lsm6dsx_suspend and st_lsm6dsx_resume function declarations
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Some x86 tablets use the BMA250E accelerometer, add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The BMA250E adds a new fifo mode and is fully backwards compatible
with the BMA250, but with a different chip-id.
This commit adds support for it by adjusting the chip-id check and
otherwise treating it as a regular BMA250.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Move proximity channel from last to first in structs to avoid confusion
later with buffered triggers. Proximity data output is first in rpr0521
register map.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add sysfs read/write proximity offset feature. Offset is read/write from
sensor registers. Values are proximity raw 10-bit values. After applying
offset value, output values will be (measured_raw - offset_value). Output
values are unsigned so offset value doesn't make output negative.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Refactor _set_power_state(), _resume() and _suspend().
Enable measurement only when needed, not in _init(). System can suspend
during measurement and measurement is continued on resume.
Pm turns off measurement when both ps and als measurements are disabled for
2 seconds. During off-time the power save is 20-500mA, typically 180mA.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Set sensor measurement off after probe fail in pm_runtime_set_active() or
iio_device_register(). Without this change sensor measurement stays on
even though probe fails on these calls.
This is maybe rare case, but causes constant power drain without any
benefits when it happens. Power drain is 20-500uA, typically 180uA.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The third argument of devm_request_threaded_irq() is the primary
handler. It is called in hardirq context and checks whether the
interrupt is relevant to the device. If the primary handler returns
IRQ_WAKE_THREAD, the secondary handler (a.k.a. handler thread) is
scheduled to run in process context.
bcm_iproc_adc.c uses the secondary handler as the primary one
and the other way around. So this patch fixes the same, along with
re-naming the secondary handler and primary handler names properly.
Tested on the BCM9583XX iProc SoC based boards.
Fixes: 4324c97ece ("iio: Add driver for Broadcom iproc-static-adc")
Reported-by: Pavel Roskin <plroskin@gmail.com>
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reset GPIO is active low.
Currently driver uses gpiod_set_value(1) to clean reset, which depends
on device tree to contain GPIO_ACTIVE_HIGH - that does not match reality.
This fixes driver to use _raw version of gpiod_set_value() to enforce
active-low semantics despite of what's written in device tree. Allowing
device tree to override that only opens possibility for errors and does
not add any value.
Additionally, use _cansleep version to make things work with i2c-gpio
and other sleeping gpio drivers.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Possible values of sensing_mode are encoded with strings and actual
strings used are not obvious.
Provide a hint by enabling in_voltage_sensing_mode_available attribute.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Currently, driver generates events for channels if new reading differs
from previous one. This "previous value" is initialized to zero, which
results into event if value is constant-one.
Fix that by initializing "previous value" by reading at event enable
time.
This provides reliable sequence for userspace:
- enable event,
- AFTER THAT read current value,
- AFTER THAT each event will correspond to change.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
With current event-only driver, it is not possible for user space
application to know current senses if they don't change since
application starts.
Address that by adding raw access to channels.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following warning when building with clang:
drivers/iio/light/isl29018.c:808:36: error: variable
'isl29018_acpi_match' is not needed and will not be emitted
[-Werror,-Wunneeded-internal-declaration]
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
HID sensor hubs using Integrated Senor Hub (ISH) has added capability to
support batch mode. This allows host processor to go to sleep for extended
duration, while the sensor hub is storing samples in its internal buffers.
'Commit f4f4673b75 ("iio: add support for hardware fifo")' implements
feature in IIO core to implement such feature. This feature is used in
bmc150-accel-core.c to implement batch mode. This implementation allows
software device buffer watermark to be used as a hint to adjust hardware
FIFO.
But HID sensor hubs don't allow to change internal buffer size of FIFOs.
Instead an additional usage id to set "maximum report latency" is defined.
This allows host to go to sleep upto this latency period without getting
any report. Since there is no ABI to set this latency, a new attribute
"hwfifo_timeout" is added so that user mode can specify a latency.
This change checks presence of usage id to get/set maximum report latency
and if present, it will expose hwfifo_timeout.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds runtime power management support to the tsl2583 driver.
The device is powered off after two seconds of inactivity. Verified that
the driver still functions correctly using a TSL2581 hooked up to a
Raspberry Pi 2.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add system sleep power management support to hts221 driver
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The power and current "shunt-resistor" attribute's 'show' function
displays the resistor value in milli-Ohms, while the ABI description
specifies it should be displayed in Ohms. Fix it.
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds support for the Texas Instruments ADC084S021 ADC chip.
Signed-off-by: Mårten Lindahl <martenli@axis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
We should be allocating enough information for a tiadc_device struct
which is about 400 bytes but instead we allocate enough for a second
iio_dev struct which is over 2000 bytes.
Fixes: fea89e2dfc ("iio: adc: ti_am335x_adc: use variable names for sizeof() operator")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
