This functionality is not used by the IIO subsystem. Due
to removal of legacy API it can also be removed.
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>
All madc users have been converted to IIO API, so drop the
legacy API. The function is still used inside of the driver.
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>
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>
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>
Fix sparse warning: Using plain integer as NULL pointer
Signed-off-by: Paolo Cretaro <paolocretaro@gmail.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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>
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>
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.
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Merge tag 'iio-for-4.13a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
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.
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.
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Merge tag 'iio-fixes-for-4.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
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>
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>
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>
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Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull hw lockdown support from David Howells:
"Annotation of module parameters that configure hardware resources
including ioports, iomem addresses, irq lines and dma channels.
This allows a future patch to prohibit the use of such module
parameters to prevent that hardware from being abused to gain access
to the running kernel image as part of locking the kernel down under
UEFI secure boot conditions.
Annotations are made by changing:
module_param(n, t, p)
module_param_named(n, v, t, p)
module_param_array(n, t, m, p)
to:
module_param_hw(n, t, hwtype, p)
module_param_hw_named(n, v, t, hwtype, p)
module_param_hw_array(n, t, hwtype, m, p)
where the module parameter refers to a hardware setting
hwtype specifies the type of the resource being configured. This can
be one of:
ioport Module parameter configures an I/O port
iomem Module parameter configures an I/O mem address
ioport_or_iomem Module parameter could be either (runtime set)
irq Module parameter configures an I/O port
dma Module parameter configures a DMA channel
dma_addr Module parameter configures a DMA buffer address
other Module parameter configures some other value
Note that the hwtype is compile checked, but not currently stored (the
lockdown code probably won't require it). It is, however, there for
future use.
A bonus is that the hwtype can also be used for grepping.
The intention is for the kernel to ignore or reject attempts to set
annotated module parameters if lockdown is enabled. This applies to
options passed on the boot command line, passed to insmod/modprobe or
direct twiddling in /sys/module/ parameter files.
The module initialisation then needs to handle the parameter not being
set, by (1) giving an error, (2) probing for a value or (3) using a
reasonable default.
What I can't do is just reject a module out of hand because it may
take a hardware setting in the module parameters. Some important
modules, some ipmi stuff for instance, both probe for hardware and
allow hardware to be manually specified; if the driver is aborts with
any error, you don't get any ipmi hardware.
Further, trying to do this entirely in the module initialisation code
doesn't protect against sysfs twiddling.
[!] Note that in and of itself, this series of patches should have no
effect on the the size of the kernel or code execution - that is
left to a patch in the next series to effect. It does mark
annotated kernel parameters with a KERNEL_PARAM_FL_HWPARAM flag in
an already existing field"
* tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (38 commits)
Annotate hardware config module parameters in sound/pci/
Annotate hardware config module parameters in sound/oss/
Annotate hardware config module parameters in sound/isa/
Annotate hardware config module parameters in sound/drivers/
Annotate hardware config module parameters in fs/pstore/
Annotate hardware config module parameters in drivers/watchdog/
Annotate hardware config module parameters in drivers/video/
Annotate hardware config module parameters in drivers/tty/
Annotate hardware config module parameters in drivers/staging/vme/
Annotate hardware config module parameters in drivers/staging/speakup/
Annotate hardware config module parameters in drivers/staging/media/
Annotate hardware config module parameters in drivers/scsi/
Annotate hardware config module parameters in drivers/pcmcia/
Annotate hardware config module parameters in drivers/pci/hotplug/
Annotate hardware config module parameters in drivers/parport/
Annotate hardware config module parameters in drivers/net/wireless/
Annotate hardware config module parameters in drivers/net/wan/
Annotate hardware config module parameters in drivers/net/irda/
Annotate hardware config module parameters in drivers/net/hamradio/
Annotate hardware config module parameters in drivers/net/ethernet/
...
If the driver is built as a module, it won't be autloaded if the devices
are registered via OF code because the OF device table
entries are not exported as aliases
Before the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
alias: platform:sun6i-a31-gpadc-iio
alias: platform:sun5i-a13-gpadc-iio
alias: platform:sun4i-a10-gpadc-iio
After the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
alias: of:N*T*Callwinner,sun8i-a33-thsC*
alias: of:N*T*Callwinner,sun8i-a33-ths
alias: platform:sun6i-a31-gpadc-iio
alias: platform:sun5i-a13-gpadc-iio
alias: platform:sun4i-a10-gpadc-iio
Signed-off-by: Eduardo Molinas <edu.molinas@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
If the driver is built as a module, it won't be autloaded if the devices
are registered via PLATFORM code because the PLATFORM device table
entries are not exported as aliases
Before the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
$
After the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
alias: platform:sun6i-a31-gpadc-iio
alias: platform:sun5i-a13-gpadc-iio
alias: platform:sun4i-a10-gpadc-iio
Signed-off-by: Eduardo Molinas <edu.molinas@gmail.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Commit 7906dd52c5 ("iio: ina2xx: Fix whitespace and re-order code")
changed the register number of the MASK_ENABLE register from 0x06 to the
value equivalent GENMASK(2,1), although its no mask.
Also fix a typo (INA2_6_6 instead of INA2_2_6), and use the datasheet
name ("Mask/Enable") for the register number define.
Fix bad indentation for channel attributes.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Meson GX SoCs however use some magic bits to prevent simultaneous (=
conflicting, because only consumer should use the FIFO buffer with the
ADC results) usage by the Linux kernel and the bootloader (the BL30
bootloader uses the SAR ADC to read the CPU temperature).
This patch changes guards all BL30 functionality so it is skipped on
SoCs which don't have it. Since the hardware itself doesn't know whether
BL30 is available the internal meson_sar_adc_data is extended so this
information can be provided per of_device_id.data inside the driver.
Additionally the clocks "adc_clk" and "adc_sel" are not provided by the
clock-controller itself. "adc_sel" is not available at all. "adc_clk"
is provided by the SAR ADC IP block itself on Meson8b (and earlier).
This is already supported by the meson_saradc driver.
Finally this introduces new of_device_ids for the Meson8 and Meson8b
SoCs so the driver can be wired up in the corresponding DT.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
These are only passed as of_device_id.data and never modified. Thus we
can mark them as static const, just like the of_device_id instances
where they are used.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Here is the big staging tree update for 4.12-rc1. And it's a big one,
adding about 350k new lines of crap^Wcode, mostly all in a big dump of
media drivers from Intel. But there's other new drivers in here as
well, yet-another-wifi driver, new IIO drivers, and a new crypto
accelerator. We also deleted a bunch of stuff, mostly in patch
cleanups, but also the Android ION code has shrunk a lot, and the
Android low memory killer driver was finally deleted, much to the
celebration of the -mm developers.
All of these have been in linux-next with a few build issues that will
show up when you merge to your tree, I'll follow up with fixes for those
after this gets merged.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
"Here is the big staging tree update for 4.12-rc1.
It's a big one, adding about 350k new lines of crap^Wcode, mostly all
in a big dump of media drivers from Intel. But there's other new
drivers in here as well, yet-another-wifi driver, new IIO drivers, and
a new crypto accelerator.
We also deleted a bunch of stuff, mostly in patch cleanups, but also
the Android ION code has shrunk a lot, and the Android low memory
killer driver was finally deleted, much to the celebration of the -mm
developers.
All of these have been in linux-next with a few build issues that will
show up when you merge to your tree"
Merge conflicts in the new rtl8723bs driver (due to the wifi changes
this merge window) handled as per linux-next, courtesy of Stephen
Rothwell.
* tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1182 commits)
staging: fsl-mc/dpio: add cpu <--> LE conversion for dpaa2_fd
staging: ks7010: remove line continuations in quoted strings
staging: vt6656: use tabs instead of spaces
staging: android: ion: Fix unnecessary initialization of static variable
staging: media: atomisp: fix range checking on clk_num
staging: media: atomisp: fix misspelled word in comment
staging: media: atomisp: kmap() can't fail
staging: atomisp: remove #ifdef for runtime PM functions
staging: atomisp: satm include directory is gone
atomisp: remove some more unused files
atomisp: remove hmm_load/store/clear indirections
atomisp: kill off mmgr_free
atomisp: clean up the hmm init/cleanup indirections
atomisp: handle allocation calls before init in the hmm layer
staging: fsl-dpaa2/eth: Add maintainer for Ethernet driver
staging: fsl-dpaa2/eth: Add TODO file
staging: fsl-dpaa2/eth: Add trace points
staging: fsl-dpaa2/eth: Add driver specific stats
staging: fsl-dpaa2/eth: Add ethtool support
staging: fsl-dpaa2/eth: Add Freescale DPAA2 Ethernet driver
...
The X-Powers AXP20X and AXP22X PMICs have multiple ADCs. They expose the
battery voltage, battery charge and discharge currents, AC-in and VBUS
voltages and currents, 2 GPIOs muxable in ADC mode and PMIC temperature.
This adds support for most of AXP20X and AXP22X ADCs.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The "if" interface clock speed is actually derived from the "fck"
block clock, as in the hardware they are the same clock. Drop the
incorrect second "if" clock and get the clock speed from "fck".
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: linux-renesas-soc@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
When the kernel is running in secure boot mode, we lock down the kernel to
prevent userspace from modifying the running kernel image. Whilst this
includes prohibiting access to things like /dev/mem, it must also prevent
access by means of configuring driver modules in such a way as to cause a
device to access or modify the kernel image.
To this end, annotate module_param* statements that refer to hardware
configuration and indicate for future reference what type of parameter they
specify. The parameter parser in the core sees this information and can
skip such parameters with an error message if the kernel is locked down.
The module initialisation then runs as normal, but just sees whatever the
default values for those parameters is.
Note that we do still need to do the module initialisation because some
drivers have viable defaults set in case parameters aren't specified and
some drivers support automatic configuration (e.g. PNP or PCI) in addition
to manually coded parameters.
This patch annotates drivers in drivers/iio/.
Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
cc: linux-iio@vger.kernel.org
This adds max1117/max1118/max1119 8-bit, dual-channel ADC driver.
This new driver uses the zero length spi_transfers with the cs_change
flag set and/or the non-zero delay_usecs.
1. The zero length transfer with the spi_transfer.cs_change set is
required in order to select CH1. The chip select line must be brought
high and low again without transfer.
2. The zero length transfer with the spi_transfer.delay_usecs > 0 is
required for waiting the conversion to be complete. The conversion
begins with the falling edge of the chip select. During the conversion
process, SCLK is ignored.
These two usages are unusual. But the spi controller drivers that use
a default implementation of transfer_one_message() are likely to work.
(I've tested this adc driver with spi-omap2-mcspi and spi-xilinx)
On the other hand, some spi controller drivers that have their own
transfer_one_message() may not work. But at least for the zero length
transfer with delay_usecs > 0, I'm proposing a new testcase for the
spi-loopback-test that can test whether the delay_usecs setting has
taken effect.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Qualcomm PM8xxx PMICs contain a simpler ADC than its
successors (already in the kernel as qcom-spmi-vadc.c):
the HK/XO ADC (Housekeeping/Chrystal oscillator ADC).
As far as I can understand this is equal to the PMICs
using SSBI transport and encompass PM8018, PM8038,
PM8058, and PM8921, so this is shortly named PM8xxx.
This ADC monitors a bunch of on-board voltages and the die
temperature of the PMIC itself, but it can also be routed
to convert a few external MPPs (multi-purpose pins). On
the APQ8060 DragonBoard this feature is used to let this
ADC convert an analog ALS (Ambient Light Sensor) voltage
signal from a Capella CM3605 ALS into a LUX value.
Developed and tested with APQ8060 DragonBoard based on
Ivan's driver and Rama Krishna's patches. The SPMI VADC
driver is quite different, but share enough minor
functionality that I have split out to the common file
in a previous patch.
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: Ivan T. Ivanov <iivanov.xz@gmail.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The SPMI VADC and the earlier XOADC share a subset of
common code, so to be able to use the same code in both
drivers, we break out a separate file with the common code,
prefix exported functions that are no longer static with
qcom_* and bake an object qcom-spmi-vadc.o that contains both
files: qcom-vadc-common.o and qcom-spmi-vadc-core.o.
As we need to follow the procedure for making a kernel module
or compiled in object from several files, but still want to
produce the same module name, rename the qcom-spmi-vadc.c
file to qcom-spmi-vadc-core.c so we can bake the two objects
into qcom-spmi-vadc.o
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: Ivan T. Ivanov <iivanov.xz@gmail.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds support for the Allwinner A33 thermal sensor.
Unlike the A10, A13 and A31, the Allwinner A33 only has one channel
which is dedicated to the thermal sensor. Moreover, its thermal sensor
does not generate interruptions, thus we only need to directly read the
register storing the temperature value.
The MFD used by the A10, A13 and A31, was created to avoid breaking the
DT binding, but since the nodes for the ADC weren't there for the A33,
it is not needed.
Though the A33 does not have an internal ADC, it has a thermal sensor
which shares the same registers with GPADC of the already supported SoCs
and almost the same bits, for the same purpose (thermal sensor).
The thermal sensor behaves exactly the same (except the presence of
interrupts or not) on the different SoCs.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This moves code used in MFD probing to a new sun4i_gpadc_probe_mfd
function.
This driver was initially written for A10, A13 and A31 SoCs which
already had a DT binding for this IP, thus we needed to use an MFD to
probe the different drivers without changing the DT binding of these
SoCs.
For SoCs that will require to create a DT binding for this IP, we can
avoid using an MFD, thus we need two separate functions: one for probing
via MFD and one for probing without MFD.
This split the code specific to MFD probing in a function separated from
the driver probe function.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
stm32 adc supports several resolution. Add 'assigned-resolution-bits'
dt optional property to set it. Default to maximum resolution in case
it isn't set.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Somewhat dominated in patch numbers of last of the outreachy application
window related patches (they are still coming, despite window being closed
which is good to see!)
Good set of new drivers as well.
New device support
* ASPEED ADC
- new driver
* cpcap PMIC ADC
- new driver
* hid-humidity
- driver for HID compatible humidity sensors.
* ltc2497 ADC
- new driver
* mpu6050
- bring bindings up to date and add trivial support for 9250
* rockchip-saradc
- update bindings to cover rk3328
* vl6180 light, proximity and time of flight sensor.
- new driver
Features
* meson-saradc
- add calibration
Cleanup and minor fixes
* ad5504
- constify attribute_group structure
- drop casting of void *
* ad7150
- replace some shifts of 1 by BIT macro usage
* ad7152
- blank lines between function definitions
* ad7280a
- octal permissions.
* ad7606
- replace use of core mlock mutex with a local lock
* ad7746
- replace some shifts of 1 by BIT macro usage
- function parameter alignment
- drop some excessive brackets (introduced in last pull request)
* ad7753
- white space cleanup
* ad7754
- includes in alphabetical order and groupped appropriately.
- change from missuse of internal mlock mutex to using the buffer lock to
also protect values during frequency update.
* ad779x
- constify attribute_group structures
* ad9832
- octal permissions
* adis16060
- remove use of core mlock mutex in favour of adding a local
_spi_write_then_read which can use the local buffer protection lock.
- fix naming of above function.
* adis16203
- remove locking during reads of calibbias that doesn't protect anything
not protected elsewhere.
* adis16209
- remove unnecessary braces in single statement if
* adis16240
- remove unnecessary braces in single statement if
* adt7136
- drop excess blank lines and put some in between functions.
* ams-iaq
- replace comma with semi colon. Not actual bug, just unusual syntax.
* apds9960
- constify attribute group structure
* as3935
- constify attribute group structure
* bm1750
- constify attribute group structure
* cros_ec
- devm version of triggered buffer setup to simplify code.
* exynos
- drop casting of void *
* hdc100x
- constify attribute_group structure
* hid-accel
- fix wrong scale for newly introduced gravity sensor.
* hts221
- drop casting of void *
* hx711
- constify attribute_group structure
* imx7d_adc
- drop casting of void *
* lm35333
- constify attribute_group structure
* lsm6dsx
- drop casting of void *
- hold ODR configuration until enabling to avoid a race condition.
* max1027
- drop casting of void *
* max11100
- fix a comma where semicolon was intended (no actual bug, just odd)
* max1363
- constify attribute_group structure
* ms sensors
- drop casting of void *
* rockchip_saradc
- drop casting of void *
* sun4i-gpadc
- fix missing dependency on THERMAL or presence of stubs (issue only
introduced in pervious set)
- drop casting of void *
* tsl2x7x
- fix wrong standard deviation calc. Note these aren't actually used for
anything at the moment so bug didn't really matter.
- constify attribute group structure.
* vf610adc
- drop casting of void *
* vz89x
- replace comma with semicolon. Not actual bug, just odd syntax.
* zpa2326
- drop casting of void *
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Merge tag 'iio-for-4.12c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Third set of new device support, cleanups and features for IIO in the 4.12 cycle
Somewhat dominated in patch numbers of last of the outreachy application
window related patches (they are still coming, despite window being closed
which is good to see!)
Good set of new drivers as well.
New device support
* ASPEED ADC
- new driver
* cpcap PMIC ADC
- new driver
* hid-humidity
- driver for HID compatible humidity sensors.
* ltc2497 ADC
- new driver
* mpu6050
- bring bindings up to date and add trivial support for 9250
* rockchip-saradc
- update bindings to cover rk3328
* vl6180 light, proximity and time of flight sensor.
- new driver
Features
* meson-saradc
- add calibration
Cleanup and minor fixes
* ad5504
- constify attribute_group structure
- drop casting of void *
* ad7150
- replace some shifts of 1 by BIT macro usage
* ad7152
- blank lines between function definitions
* ad7280a
- octal permissions.
* ad7606
- replace use of core mlock mutex with a local lock
* ad7746
- replace some shifts of 1 by BIT macro usage
- function parameter alignment
- drop some excessive brackets (introduced in last pull request)
* ad7753
- white space cleanup
* ad7754
- includes in alphabetical order and groupped appropriately.
- change from missuse of internal mlock mutex to using the buffer lock to
also protect values during frequency update.
* ad779x
- constify attribute_group structures
* ad9832
- octal permissions
* adis16060
- remove use of core mlock mutex in favour of adding a local
_spi_write_then_read which can use the local buffer protection lock.
- fix naming of above function.
* adis16203
- remove locking during reads of calibbias that doesn't protect anything
not protected elsewhere.
* adis16209
- remove unnecessary braces in single statement if
* adis16240
- remove unnecessary braces in single statement if
* adt7136
- drop excess blank lines and put some in between functions.
* ams-iaq
- replace comma with semi colon. Not actual bug, just unusual syntax.
* apds9960
- constify attribute group structure
* as3935
- constify attribute group structure
* bm1750
- constify attribute group structure
* cros_ec
- devm version of triggered buffer setup to simplify code.
* exynos
- drop casting of void *
* hdc100x
- constify attribute_group structure
* hid-accel
- fix wrong scale for newly introduced gravity sensor.
* hts221
- drop casting of void *
* hx711
- constify attribute_group structure
* imx7d_adc
- drop casting of void *
* lm35333
- constify attribute_group structure
* lsm6dsx
- drop casting of void *
- hold ODR configuration until enabling to avoid a race condition.
* max1027
- drop casting of void *
* max11100
- fix a comma where semicolon was intended (no actual bug, just odd)
* max1363
- constify attribute_group structure
* ms sensors
- drop casting of void *
* rockchip_saradc
- drop casting of void *
* sun4i-gpadc
- fix missing dependency on THERMAL or presence of stubs (issue only
introduced in pervious set)
- drop casting of void *
* tsl2x7x
- fix wrong standard deviation calc. Note these aren't actually used for
anything at the moment so bug didn't really matter.
- constify attribute group structure.
* vf610adc
- drop casting of void *
* vz89x
- replace comma with semicolon. Not actual bug, just odd syntax.
* zpa2326
- drop casting of void *
With CONFIG_THERMAL=m and CONFIG_SUN4I_GPADC=y, we get a link error
from calling devm_thermal_zone_of_sensor_register:
drivers/iio/built-in.o: In function `sun4i_gpadc_probe':
:(.text+0x1c284): undefined reference to `devm_thermal_zone_of_sensor_register'
This adds a Kconfig dependency to ensure we can only have the ADC
driver as built-in when this function is also built-in, or when
we see the empty stub implementation. When the thermal code is
a module, we can still build the adc driver as a module, too.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d1caa99055 ("iio: adc: add support for Allwinner SoCs ADC")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds support for the Analog Devices / Linear Technology
LTC2497 ADCs. The LTC2497 is a 16-channel (eight differential),
16-bit, high precision, delta-sigma ADC with an automatic, differential,
input current cancellation front end and a 2-wire, I2C interface.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The following Coccinelle script was used to detect this:
@r@
expression x;
void* e;
type T;
identifier f;
@@
(
*((T *)e)
|
((T *)x)[...]
|
((T*)x)->f
|
- (T*)
e
)
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Aspeed BMC SoCs include a 16 channel, 10-bit ADC. Low and high threshold
interrupts are supported by the hardware but are not currently implemented.
Signed-off-by: Rick Altherr <raltherr@google.com>
Tested-by: Xo Wang <xow@google.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Check for attribute_group structures that are only stored in the
attrs filed of iio_info structure. As the attrs field of iio_info
structures is constant, so these attribute_group structures can also be
declared constant.
Done using coccinelle:
@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct attribute_group i@p = {...};
@ok1@
identifier r1.i;
position p;
struct iio_info x;
@@
x.attrs=&i@p;
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct attribute_group i={...};
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct attribute_group i;
File size before:
text data bss dec hex filename
3042 480 0 3522 dc2 drivers/iio/adc/hx711.o
File size after:
text data bss dec hex filename
3098 416 0 3514 dba drivers/iio/adc/hx711.o
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
On Motorola phones like droid 4 there is a custom CPCAP PMIC. This PMIC
has ADCs that are used for battery charging and USB PHY VBUS and ID pin
detection.
Unfortunately the only documentation for this ADC seems to be the
Motorola mapphone Linux kernel tree. I have tested that reading raw and
scaled values works, but I have not used the timed sampling that the ADC
seems to support.
Let's add a minimal support for it so we can eventually provide IIO
channels for the related battery charging and USB PHY drivers.
Cc: devicetree@vger.kernel.org
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>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace a comma between expression statements by a semicolon. This
changes the semantics of the code, but given the current indentation
appears to be what is intended.
A simplified version of the Coccinelle semantic patch that performs this
transformation is as follows:
// <smpl>
@r@
expression e1,e2;
@@
e1
-,
+;
e2;
// </smpl>
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Check for attribute_group structures that are only stored in the
event_attrs filed of iio_info structure. As the event_attrs field of
iio_info structures is constant, so these attribute_group structures can
also be declared constant.
Done using coccinelle:
@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct attribute_group i@p = {...};
@ok1@
identifier r1.i;
position p;
struct iio_info x;
@@
x.event_attrs=&i@p;
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct attribute_group i={...};
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct attribute_group i;
File size before:
text data bss dec hex filename
26051 464 0 26515 6793 drivers/iio/adc/ad799x.o
File size after:
text data bss dec hex filename
26115 400 0 26515 6793 drivers/iio/adc/ad799x.o
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Check for attribute_group structures that are only stored in the
event_attrs filed of iio_info structure. As the event_attrs field of
iio_info structures is constant, so these attribute_group structures can
also be declared constant. Done using coccinelle:
@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct attribute_group i@p = {...};
@ok1@
identifier r1.i;
position p;
struct iio_info x;
@@
x.event_attrs=&i@p;
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct attribute_group i={...};
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct attribute_group i;
File size before:
text data bss dec hex filename
36951 448 0 37399 9217 drivers/iio/adc/max1363.o
File size after:
text data bss dec hex filename
37015 384 0 37399 9217 drivers/iio/adc/max1363.o
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds calibration for the Meson SAR ADC.
Points 25% vref and 75% vref are used for calibration.
It uses a simple linear calibration function: SCALE * val + BIAS
Successfully tested on a Odroid C2.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Since the driver has been split into MFD there is no reason for it to
stay, so remove it.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Add support for sixteen-channel 12-bit resolution ADC and its functions,
which include general-purpose ADC readings, battery voltage measurement,
and die temperature measurement.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.
But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.
But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
PC/104 drivers should be hidden on machines which do not support PC/104
devices. This patch adds the PC104 Kconfig option as a dependency for
the relevant PC/104 device driver Kconfig options.
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The tiadc_irq_h(int irq, void *private) function is handling FIFO
overruns by clearing flags, disabling and enabling the ADC to
recover.
If the ADC is running in continuous mode a FIFO overrun happens
regularly. If the disabling of the ADC happens concurrently with
a new conversion. It might happen that the enabling of the ADC
is ignored by the hardware. This stops the ADC permanently. No
more interrupts are triggered.
According to the AM335x Reference Manual (SPRUH73H October 2011 -
Revised April 2013 - Chapter 12.4 and 12.5) it is necessary to
check the ADC FSM bits in REG_ADCFSM before enabling the ADC
again. Because the disabling of the ADC is done right after the
current conversion has been finished.
To trigger this bug it is necessary to run the ADC in continuous
mode. The ADC values of all channels need to be read in an endless
loop. The bug appears within the first 6 hours (~5.4 million
handled FIFO overruns). The user space application will hang on
reading new values from the character device.
Fixes: ca9a563805 ("iio: ti_am335x_adc: Add continuous sampling
support")
Signed-off-by: Michael Engl <michael.engl@wjw-solutions.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Allwinner SoCs all have an ADC that can also act as a touchscreen
controller and a thermal sensor. This patch adds the ADC driver which is
based on the MFD for the same SoCs ADC.
This also registers the thermal adc channel in the iio map array so
iio_hwmon could use it without modifying the Device Tree. This registers
the driver in the thermal framework.
The thermal sensor requires the IP to be in touchscreen mode to return
correct values. Therefore, if the user is continuously reading the ADC
channel(s), the thermal framework in which the thermal sensor is
registered will switch the IP in touchscreen mode to get a temperature
value and requires a delay of 100ms (because of the mode switching),
then the ADC will switch back to ADC mode and requires also a delay of
100ms. If the ADC readings are critical to user and the SoC temperature
is not, this driver is capable of not registering the thermal sensor in
the thermal framework and thus, "quicken" the ADC readings.
This driver probes on three different platform_device_id to take into
account slight differences (registers bit and temperature computation)
between Allwinner SoCs ADCs.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Remove .owner field if calls are used which set it automatically.
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Quite a bit of outreachy activity here with a driver from a current intern
and a number of cleanup patches as part of the next round.
Getting a pull request in early this cycle as it's looking like another large
cycle for IIO.
New device support
* adxl345
- initial device support. Note, once complete support is done the intent
is to superceded the driver in input/misc.
- bindings.
- conversion from i2c direct calls to regmap and driver split.
- spi support.
* chromeos light and proximity.
- new driver.
* devantech srf04 ultrasonic ranger
- new driver with device tree bindings.
* hid temperature
- new driver for environemntal temperature support from hid devices.
* max30102 oximeter
- new driver with device tree bindings.
* st lsm6dsx
- refactor and addition of device support for lsm6dsl and lsm6ds3h.
Staging graduation
* isl29028 including copyright notice update to reflect Brian's work.
* lpc32xx_adc.
* spear adc. It's not perfect and there are some datasheet disagreements, but
it works and is good enough to graduate.
New features
* documentation
- abi docs for in_proximity_sampling_frequency_available.
- generalise counting direction ABI docs as a second driver is going to
use them.
* hid-sensor-prox
- Add support for HID_USAGE_SENSOR_HUMAN_PRESENCE if used on a particular
device.
* isl29028
- runtime pm.
* meson-saradc
- switch from polling to interrupt mode and improved read_raw_sample function
to avoid unnecessary loop.
* tmp007
- interrupt and threshold event support.
Cleanups and minor fixes
* ad2s1210
- permissions to octal.
* ad7192
- permissions to octal.
- use BIT macro.
* ad9832
- merge header definitions into source file.
* ad9834
- merge header definitions into source file.
* ade7753
- merge header definitions into source file.
- cleanup include ordering.
* ade7854
- simplify return logic.
* adis16201
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adis16203
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adis16209
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adis16240
- permissions to octal.
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adt7136
- permissions to octal.
* cio-dac
- set missing parent device.
* documentation
- update version numbers on sysfs ABI for counter bits that didn't quite.
make 4.9.
* isl29028
- mdelay to msleep.
- incorrrect sleep time when taking first proximity reading.
* lmp91000
- set missing parent device.
* lpc32xx
- Consistent prefixes for defines.
- rename local state structure to _state.
* max30100
- set missing parent device.
* max30102
- set missing parent device.
* maxim-thermocouple
- set missing parent device.
* meter driver header
- permissions to octal.
* pulsedlight-lidar-lite-v2
- set missing parent device.
* quad-8
- set missing parent device.
* st104
- set missing parent device.
Other
* Mailmap
- update Matt Ranostay's email address to the Konsolko one.
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Merge tag 'iio-for-4.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First set of IIO new device support, features and cleanup for the 4.12 cycle.
Quite a bit of outreachy activity here with a driver from a current intern
and a number of cleanup patches as part of the next round.
Getting a pull request in early this cycle as it's looking like another large
cycle for IIO.
New device support
* adxl345
- initial device support. Note, once complete support is done the intent
is to superceded the driver in input/misc.
- bindings.
- conversion from i2c direct calls to regmap and driver split.
- spi support.
* chromeos light and proximity.
- new driver.
* devantech srf04 ultrasonic ranger
- new driver with device tree bindings.
* hid temperature
- new driver for environemntal temperature support from hid devices.
* max30102 oximeter
- new driver with device tree bindings.
* st lsm6dsx
- refactor and addition of device support for lsm6dsl and lsm6ds3h.
Staging graduation
* isl29028 including copyright notice update to reflect Brian's work.
* lpc32xx_adc.
* spear adc. It's not perfect and there are some datasheet disagreements, but
it works and is good enough to graduate.
New features
* documentation
- abi docs for in_proximity_sampling_frequency_available.
- generalise counting direction ABI docs as a second driver is going to
use them.
* hid-sensor-prox
- Add support for HID_USAGE_SENSOR_HUMAN_PRESENCE if used on a particular
device.
* isl29028
- runtime pm.
* meson-saradc
- switch from polling to interrupt mode and improved read_raw_sample function
to avoid unnecessary loop.
* tmp007
- interrupt and threshold event support.
Cleanups and minor fixes
* ad2s1210
- permissions to octal.
* ad7192
- permissions to octal.
- use BIT macro.
* ad9832
- merge header definitions into source file.
* ad9834
- merge header definitions into source file.
* ade7753
- merge header definitions into source file.
- cleanup include ordering.
* ade7854
- simplify return logic.
* adis16201
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adis16203
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adis16209
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adis16240
- permissions to octal.
- merge header definitions into source file.
- rename _core.c to .c as there is nothing else.
* adt7136
- permissions to octal.
* cio-dac
- set missing parent device.
* documentation
- update version numbers on sysfs ABI for counter bits that didn't quite.
make 4.9.
* isl29028
- mdelay to msleep.
- incorrrect sleep time when taking first proximity reading.
* lmp91000
- set missing parent device.
* lpc32xx
- Consistent prefixes for defines.
- rename local state structure to _state.
* max30100
- set missing parent device.
* max30102
- set missing parent device.
* maxim-thermocouple
- set missing parent device.
* meter driver header
- permissions to octal.
* pulsedlight-lidar-lite-v2
- set missing parent device.
* quad-8
- set missing parent device.
* st104
- set missing parent device.
Other
* Mailmap
- update Matt Ranostay's email address to the Konsolko one.
This series consists of fixes that either came in after the merge window
had opened or are fixes for work that merged during the merge window so had
to wait for that to hit mainline.
* 104-quad-8
- Fix an off by one error in the register address for the flag register.
* rcar-gyroadc
- protect against possible issues in future by dealing with childmode not
being in a valid state. This also deals with some build warnings.
* xilinx
- fix some error handling paths to ensure resources are released in
reverse order of being acquired.
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Merge tag 'iio-fixes-for-4.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for IIO in the 4.11 cycle.
This series consists of fixes that either came in after the merge window
had opened or are fixes for work that merged during the merge window so had
to wait for that to hit mainline.
* 104-quad-8
- Fix an off by one error in the register address for the flag register.
* rcar-gyroadc
- protect against possible issues in future by dealing with childmode not
being in a valid state. This also deals with some build warnings.
* xilinx
- fix some error handling paths to ensure resources are released in
reverse order of being acquired.
Reorder error handling labels in order to match the way resources have
been allocated.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
After sampling there should always be only one value in the FIFO.
This also applies to averaging mode as the averaging is done
chip-internally. So we don't have to loop and let the driver
complain if there's not exactly one value in the FIFO.
If the value belongs to a different channel then don't silently
swallow the value but complain.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Switch from polling to interrupt mode.
Successfully tested on a S905GXBB-based Odroid C2.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Initialize the parent of the IIO device to the device that registered it.
This makes sure that the IIO device appears the right level in the device
hierarchy.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There are a few more little cleanups that could be done on this driver, but
I don't think any are sufficient to justify not moving it out of staging.
It's a very simple driver (presumably for a simple part) so not much that can
go wrong. I think it was only ever in staging because that's where IIO was
as a whole at the time and then we forgot about it!
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Roland Stigge <stigge@antcom.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There are some unanswered questions due to disagreements between the code
and various datasheets (including between different datasheets for the same
part).
I don't think that is necessarily a reason to keep it in staging however.
I'm partly posting this patch inorder to reignite debate and with a bit
of luck find someone who has one of these to test!
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This resolves the merge errors that were reported in linux-next and it
picks up the staging and IIO fixes that we need/want in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we get an unknown 'childmode' value, a number of variables are not
initialized properly:
drivers/iio/adc/rcar-gyroadc.c: In function 'rcar_gyroadc_probe':
drivers/iio/adc/rcar-gyroadc.c:390:5: error: 'num_channels' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/iio/adc/rcar-gyroadc.c:426:22: error: 'sample_width' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/iio/adc/rcar-gyroadc.c:428:23: error: 'channels' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The driver is currently correct, but handling this properly is more robust
for possible modifications.
There is also a false-positive warning about adcmode being possibly uninitialized,
but that cannot happen as we also check the 'first' flag:
drivers/iio/adc/rcar-gyroadc.c:398:26: error: 'adcmode' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This adds an initialization for 'adcmode' and bails out for any unknown childmode.
Fixes: 059c53b323 ("iio: adc: Add Renesas GyroADC driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Apex Embedded Systems STX104 series provides a digital output
register where 4 lines may be set at a time. This patch add support for
the set_multiple callback function, thus allowing multiple digital
output lines to be set more efficiently in groups.
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch sets the gpio_chip names option with an array of GPIO line
names that match the manual documentation for the Apex Embedded Systems
STX104. This should make it easier for users to identify which GPIO line
corresponds to a respective GPIO pin on the device.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The stx104_dev structure was used to hold private data for use in the
stx104_remove function. Now that the stx104_remove function is gone, the
stx104_dev structure and relevant code is no longer needed. This patch
removes the unnecessary code.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add DMA optional support to STM32 ADC, as there is a limited number DMA
channels (request lines) that can be assigned to ADC. This way, driver
may fall back using interrupts when all DMA channels are in use for
other IPs.
Use dma cyclic mode with two periods. Allow to tune period length by
using watermark. Coherent memory is used for dma (max buffer size is
fixed to PAGE_SIZE).
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Define extended attribute so that user may choose rising, falling or both
edges for external trigger sources.
Default to rising edge in case it isn't set.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
STM32 ADC has external timer trigger sources. Use stm32 timer triggers
API (e.g. is_stm32_timer_trigger()) with local ADC lookup table to
validate a trigger can be used.
This also provides correct trigger selection value (e.g. extsel).
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
STM32 ADC conversions can be launched using hardware triggers.
It can be used to start conversion sequences (group of channels).
Selected channels are select via sequence registers.
Trigger source is selected via 'extsel' (external trigger mux).
Trigger polarity is set to rising edge by default.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The devm_ resource manager functions allow memory to be automatically
released when a device is unbound. This patch takes advantage of the
resource manager functions and replaces the gpiochip_add_data call and
iio_device_register call with the devm_gpiochip_add_data call and
devm_iio_device_register call respectively. In addition, the
stx104_remove function has been removed as no longer necessary due to
the use of the relevant devm_ resource manager functions.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds support for the SAR (Successive Approximation Register) ADC
on the Amlogic Meson SoCs.
The code is based on the public S805 (Meson8b) and S905 (GXBB)
datasheets (see [0] and [1]), as well as by reading (various versions
of) the vendor driver and by inspecting the registers on the vendor
kernels of my testing-hardware.
Currently the GXBB, GXL and GXM SoCs are supported. GXBB hardware has
10-bit ADC resolution, while GXL and GXM have 12-bit ADC resolution.
The code was written to support older SoCs (Meson8 and Meson8b) as well,
but due to lack of actual testing-hardware no of_device_id was added for
these.
Two "features" from the vendor driver are currently missing:
- the vendor driver uses channel #7 for calibration (this improves the
accuracy of the results - in my tests the results were less than 3%
off without calibration compared to the vendor driver). Adding support
for this should be easy, but is not required for most applications.
- channel #6 is connected to the SoCs internal temperature sensor.
Adding support for this is probably not so easy since (based on the
u-boot sources) most SoC versions are using different registers and
algorithms for the conversion from "ADC value" to temperature.
Supported by the hardware but currently not supported by the driver:
- reading multiple channels at the same time (the hardware has a FIFO
buffer which stores multiple results)
- continuous sampling (this would require a way to enable this
individually because otherwise the ADC would be drawing power
constantly)
- interrupt support (similar to the vendor driver this new driver is
polling the results. It is unclear if the IRQ-mode is supported on
older (Meson6 or Meson8) hardware as well or if there are any errata)
[0]
http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf
[1] http://dn.odroid.com/S905/DataSheet/S905_Public_Datasheet_V1.1.4.pdf
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add IIO driver for the Renesas RCar GyroADC block. This block is a
simple 4/8-channel ADC which samples 12/15/24 bits of data every
cycle from all channels.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-renesas-soc@vger.kernel.org
Cc: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New device support:
* lsm6dsx imu
- new driver and bindings.
* max11100 adc
- new driver and bindings.
* tlc4541
- new driver
* tmp007 thermopile
- new driver.
Core
* in kernel interfaces
- pass through raw values if no scaling provided and a processed value is
requested.
* trigger
- close a race condition in acquiring trigger reference.
- constify device_type structures.
- rework the viio_trigger_alloc function to be much neater and easier to
read.
- free trigger resources correctly on some error paths. Avoids putting a
module we don't have.
Documentation
* ABI
- specify a unit for proximity measurements.
Cleanups and features
* ads1015
- constify iio_info structure.
* ads7950 cleanups following merge in previous pull
- Add device tree bindings
- Drop the ti prefix from the module name in common with other drivers.
- Change regulator name to vref to match datasheet and other drivers.
* ak8974
- remove a redundant zero timeout check.
* bmi160
- use variable names for sizeof instead of types.
* cm3605
- mark PM functions as __maybe_unused to avoid a build warning.
* isl29028 (on it's way towards moving out of staging).
- alignment fixes and newline improvements.
- combine proxim_get and read_proxim for simpler code.
- drop unused ISL29028_DEV_ATTR macro
- move some error logging into functions to cut out repitition.
- make error messages more consistent.
- tidy up some brackets.
- drop the enable flag that nothing uses.
- only set proximity rate and ALS scale when relevant channel type is enabled.
- runtime pm support.
* lsm6dsx
- fix wrong values for gyro sensitivitiy.
* mag3110
- claim direct mode during sysfs reads to avoid a race condition.
* max1363
- export OF device table IDs as module aliases.
* max30100
- use msleep for long uncritical delays.
* mcp4531
- export OF device table as module aliases.
* ms5611
- claim direct mode during sysfs reads to avoid a race condition.
* opt3001
- export OF device table as module aliases.
* sx9500
- claim direct mode during oversampling changes to avoid a race condition.
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Merge tag 'iio-for-4.11b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into work-next
Jonathan writes:
Second round of IIO new device support, cleanups and features for the 4.11 cycle
New device support:
* lsm6dsx imu
- new driver and bindings.
* max11100 adc
- new driver and bindings.
* tlc4541
- new driver
* tmp007 thermopile
- new driver.
Core
* in kernel interfaces
- pass through raw values if no scaling provided and a processed value is
requested.
* trigger
- close a race condition in acquiring trigger reference.
- constify device_type structures.
- rework the viio_trigger_alloc function to be much neater and easier to
read.
- free trigger resources correctly on some error paths. Avoids putting a
module we don't have.
Documentation
* ABI
- specify a unit for proximity measurements.
Cleanups and features
* ads1015
- constify iio_info structure.
* ads7950 cleanups following merge in previous pull
- Add device tree bindings
- Drop the ti prefix from the module name in common with other drivers.
- Change regulator name to vref to match datasheet and other drivers.
* ak8974
- remove a redundant zero timeout check.
* bmi160
- use variable names for sizeof instead of types.
* cm3605
- mark PM functions as __maybe_unused to avoid a build warning.
* isl29028 (on it's way towards moving out of staging).
- alignment fixes and newline improvements.
- combine proxim_get and read_proxim for simpler code.
- drop unused ISL29028_DEV_ATTR macro
- move some error logging into functions to cut out repitition.
- make error messages more consistent.
- tidy up some brackets.
- drop the enable flag that nothing uses.
- only set proximity rate and ALS scale when relevant channel type is enabled.
- runtime pm support.
* lsm6dsx
- fix wrong values for gyro sensitivitiy.
* mag3110
- claim direct mode during sysfs reads to avoid a race condition.
* max1363
- export OF device table IDs as module aliases.
* max30100
- use msleep for long uncritical delays.
* mcp4531
- export OF device table as module aliases.
* ms5611
- claim direct mode during sysfs reads to avoid a race condition.
* opt3001
- export OF device table as module aliases.
* sx9500
- claim direct mode during oversampling changes to avoid a race condition.
Declare iio_info structures as const as they are only stored in
the info field of a iio_dev structure. This field is of type const,
so iio_info structures having similar properties can be made const too.
File size before:
text data bss dec hex filename
6944 792 0 7736 1e38 drivers/iio/adc/ti-ads1015.o
File size after:
text data bss dec hex filename
7264 472 0 7736 1e38 drivers/iio/adc/ti-ads1015.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The I2C core always reports a MODALIAS of the form i2c:<foo> even if the
device was registered via OF, this means that exporting the OF device ID
table device aliases in the module is not needed. But in order to change
how the core reports modaliases to user-space, it's better to export it.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds TI's tlc4541 16-bit ADC driver. Which is a single channel
ADC. Supports raw and trigger buffer access.
Also supports the tlc3541 14-bit device, which has not been tested.
Implementation of the tlc3541 is fairly straight forward thou.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The suspend/resume functions were using dev_to_iio_dev() to get
the iio_dev. That only works on IIO dev's. Use dev_get_drvdata()
for a platform device to get the correct iio_dev.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
It's shaping to be another fairly busy cycle. Lots more on the way!
New device support
* ads7950
- new driver supporting ads7950, ads7951, ads7952, ads7953, ads7954,
ads7955, ads7956, ads7957, ads7958, ads7959, ads7960, and ads7961 ADCs.
* cm3605
- New driver for this light sensor and proximity sensor which is an
analog part with some additional digital controls.
* hx711
- New driver.
Core new stuff
* Gravity sensor type. This is a processed datastream in which the device
will try to work out which way is down.
* Split the buffer.h file into two parts. One provides the interface to 'use'
a buffer, the second provides the internals of the buffer functionality as
needed by implementations of buffers.
- Move documentation inline so as to allow use of private: tag when
generating documentation.
- Add some utility functions for the few things that are directly done
with the buffers.
- Stop exporting functions that no-one uses outside of the core code.
- Push docs down by the code in the c file where they should have always
been.
- Fix typo in kernel-doc for buffer.
- push down some includes that were previously happening implicitly.
- stop enabling the timestamp of the dummy device.
Features and cleanups
* ad5592r
- ACPI support
* ad5593r
-ACPI support.
* ad5933
- Fix a false comment about size of a particular register.
* ad7150
- replace S_IRUGO | S_IWUSR with 0644. I'm not that keen on these patches
in general, but as it was nicely presented I took this one anyway. As a
general rule will only take these as part of a larger driver cleanup.
- don't eat an error but rather reutnr it in the write_event_config callback.
* ad7606
- replace non standard range attibute with _scale
* ade7753
- use usleep_range for short sleeps
* ade7754
- use usleep_range for short sleeps
* ade7758
- use usleep_range for short sleeps
* ade7759
- use usleep_range for short sleeps
* ade7854
- use usleep_range for short sleeps
* adis16201
- fix description
* adis16203
- fix description
- fix copyright year
* adis16209
- fix description
* adt7316
- Add braces to arms of if else statement (for consistency)
- Alignment fixes.
* axp288
- Fix up an issue with accidental overwrites of data.
* bmi160
- add deivce tables for i2c and spi to support correctly identifying the
full dt name (including manufacturer).
- device tree binding.
* bmp280
- use usleep_range for short sleeps.
* cm3232
- return error from cm3232_reg_init rather than eating it if the last write
fails.
* dummy driver
- remove a semicolor found at end of a function defintition.
* exynos-adc
- use usleep_range for short sleeps.
* hid-sensor (accel)
- Add timestamp support. The hardware can provide timestamps so lets support
them. If not fall back to timestamps estimated in kernel.
* hid-sensor (light)
- Add a duplicate ID for the light channels so as to keep existing interface
whilst also using the more standard IIO interface.
* hts221
- acpi probing
* imx25-gcq
- Add a macro call to allow this driver to be automatically loaded.
* isl29028
- reorganise code to avoid deep nesting of if statements.
- move chip test and default regs into a function suitable or sharing with
power management code.
- tidy up some code alignment.
* lidar-lite-v3
- introduce compatible strings that make it clear Garmin have consideral
friends.
* mma8452
- avoid returning signed value when unsigned is appropriate
* spmi-vadc
- Update function for generic voltage conversion to take into account that
different channels on this device should be handled differently.
- Rework code to allow per channel voltage scaling and support the standard
options for this hardware.
- Fixup three minor issues with the above patches for this part. These all
effect test builds rather than the native builds for the part, but good to
clean them up anyway.
* st_sensors
- support device matching from the ACPI DST tables.
- acpi based probing for accelerometers
- acpi based probing for pressure sensors
- Allow pressure sensors to read negative values.
- Export sampling frequency for lps25h and lps331ap.
- Add support for the old DT bindings from the period when these deivces
were often supported through windows.
Docs fixup:
* typo in sysfs-bus-iio
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Merge tag 'iio-for-4.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of new device support, features and cleanups for IIO in the 4.11 cycle.
It's shaping to be another fairly busy cycle. Lots more on the way!
New device support
* ads7950
- new driver supporting ads7950, ads7951, ads7952, ads7953, ads7954,
ads7955, ads7956, ads7957, ads7958, ads7959, ads7960, and ads7961 ADCs.
* cm3605
- New driver for this light sensor and proximity sensor which is an
analog part with some additional digital controls.
* hx711
- New driver.
Core new stuff
* Gravity sensor type. This is a processed datastream in which the device
will try to work out which way is down.
* Split the buffer.h file into two parts. One provides the interface to 'use'
a buffer, the second provides the internals of the buffer functionality as
needed by implementations of buffers.
- Move documentation inline so as to allow use of private: tag when
generating documentation.
- Add some utility functions for the few things that are directly done
with the buffers.
- Stop exporting functions that no-one uses outside of the core code.
- Push docs down by the code in the c file where they should have always
been.
- Fix typo in kernel-doc for buffer.
- push down some includes that were previously happening implicitly.
- stop enabling the timestamp of the dummy device.
Features and cleanups
* ad5592r
- ACPI support
* ad5593r
-ACPI support.
* ad5933
- Fix a false comment about size of a particular register.
* ad7150
- replace S_IRUGO | S_IWUSR with 0644. I'm not that keen on these patches
in general, but as it was nicely presented I took this one anyway. As a
general rule will only take these as part of a larger driver cleanup.
- don't eat an error but rather reutnr it in the write_event_config callback.
* ad7606
- replace non standard range attibute with _scale
* ade7753
- use usleep_range for short sleeps
* ade7754
- use usleep_range for short sleeps
* ade7758
- use usleep_range for short sleeps
* ade7759
- use usleep_range for short sleeps
* ade7854
- use usleep_range for short sleeps
* adis16201
- fix description
* adis16203
- fix description
- fix copyright year
* adis16209
- fix description
* adt7316
- Add braces to arms of if else statement (for consistency)
- Alignment fixes.
* axp288
- Fix up an issue with accidental overwrites of data.
* bmi160
- add deivce tables for i2c and spi to support correctly identifying the
full dt name (including manufacturer).
- device tree binding.
* bmp280
- use usleep_range for short sleeps.
* cm3232
- return error from cm3232_reg_init rather than eating it if the last write
fails.
* dummy driver
- remove a semicolor found at end of a function defintition.
* exynos-adc
- use usleep_range for short sleeps.
* hid-sensor (accel)
- Add timestamp support. The hardware can provide timestamps so lets support
them. If not fall back to timestamps estimated in kernel.
* hid-sensor (light)
- Add a duplicate ID for the light channels so as to keep existing interface
whilst also using the more standard IIO interface.
* hts221
- acpi probing
* imx25-gcq
- Add a macro call to allow this driver to be automatically loaded.
* isl29028
- reorganise code to avoid deep nesting of if statements.
- move chip test and default regs into a function suitable or sharing with
power management code.
- tidy up some code alignment.
* lidar-lite-v3
- introduce compatible strings that make it clear Garmin have consideral
friends.
* mma8452
- avoid returning signed value when unsigned is appropriate
* spmi-vadc
- Update function for generic voltage conversion to take into account that
different channels on this device should be handled differently.
- Rework code to allow per channel voltage scaling and support the standard
options for this hardware.
- Fixup three minor issues with the above patches for this part. These all
effect test builds rather than the native builds for the part, but good to
clean them up anyway.
* st_sensors
- support device matching from the ACPI DST tables.
- acpi based probing for accelerometers
- acpi based probing for pressure sensors
- Allow pressure sensors to read negative values.
- Export sampling frequency for lps25h and lps331ap.
- Add support for the old DT bindings from the period when these deivces
were often supported through windows.
Docs fixup:
* typo in sysfs-bus-iio
This changes the reference voltage regulator matching string from "refin"
to "vref". This is to be consistent with other A/DC chips that also use
"vref-supply" in their device tree bindings.
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This drops the "ti-" prefix from the module name. It makes the module name
consistent with other iio ti-ads* drivers and it makes the driver work
with device tree (the spi subsystem drops the "ti," prefix when matching
compatible strings from device tree).
Tested working on LEGO MINDSTORMS EV3 with the following device tree node:
adc@3 {
compatible = "ti,ads7957";
reg = <3>;
#io-channel-cells = <1>;
spi-max-frequency = <10000000>;
vref-supply = <&adc_ref>;
};
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Another one of these that we missed previously which prevents test builds
of this driver on 32 bit platforms as it gives an undefined __divdi3 warning.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
It is meant to be long and is only added to an s64.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
A simple do_div call works here as all the signed 64 bit is
actually small and unsigned at this point, and the numerator is
u32.
Introduce a temporary u64 variable to avoid type comparison warnings
on some architectures.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This is the IIO driver for AVIA HX711 ADC which is mostly used in weighting
cells.
The protocol is quite simple and using GPIOs:
One GPIO is used as clock (SCK) while another GPIO is read (DOUT)
The raw value read from the chip is delivered.
To get a weight one needs to subtract the zero offset and scale it.
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
For some reason the axp288_adc driver was modifying the
AXP288_ADC_TS_PIN_CTRL register, changing bits 0-1 depending on
whether the GP_ADC channel or another channel was written.
These bits control when a bias current is send to the TS_PIN, the
GP_ADC has its own pin and a separate bit in another register to
control the bias current.
Not only does changing when to enable the TS_PIN bias current
(always or only when sampling) when reading the GP_ADC make no sense
at all, the code is modifying these bits is writing the entire register,
assuming that all the other bits have their default value.
So if the firmware has configured a different bias-current for either
pin, then that change gets clobbered by the write, likewise if the
firmware has set bit 2 to indicate that the battery has no thermal sensor,
this will get clobbered by the write.
This commit fixes all this, by simply removing all writes to the
AXP288_ADC_TS_PIN_CTRL register, they are not needed to read the
GP_ADC pin, and can actually be harmful.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/iio/adc/fsl-imx25-gcq.ko | grep alias
$
After this patch:
$ modinfo drivers/iio/adc/fsl-imx25-gcq.ko | grep alias
alias: of:N*T*Cfsl,imx25-gcqC*
alias: of:N*T*Cfsl,imx25-gcq
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
As a precursor to splitting buffer.h, lets make sure all drivers
include the relevant headers rather than relying on picking them
up from kfifo_buf.h.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Several ADC channels are supported in PMIC which can be used to
measure voltage, temperature, current etc. Different scaling can be
applied on the obtained voltage to report in physical units. Scaling
functionality can be different per channel. Add scaling support per
channel. Every channel present in adc has an unique conversion formula
for obtained voltage. Add support to report in Raw as well as in
processed format. Scaling is applied when processed read is requested
and is not applied when a Raw read is requested.
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Several channels are supported in ADC of PMIC which can be used to
measure voltage, temperature, current etc., Hardware provides
readings for all channels in adc code. That adc code needs to be
converted to voltage. Logic for conversion of adc code to voltage
is common for all ADC channels(voltage, temperature, current
.,etc). Implement separate function for generic conversion logic.
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds a new driver for the TI ADS7950 family of ADC chips. These
communicate using SPI and come in 8/10/12-bit and 4/8/12/16 channel
varieties.
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
msleep(1~20) may not do what the caller intends, and will often sleep longer.
(~20 ms actual sleep for any value given in the 1~20ms range)
This is not the desired behaviour for many cases like device resume time,
device suspend time, device enable time, data reading time, etc.
Thus, change msleep to usleep_range for precise wakeups.
Signed-off-by: Aniroop Mathur <a.mathur@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds support for STMicroelectronics STM32 MCU's analog to
digital converter.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add core driver for STMicroelectronics STM32 ADC (Analog to Digital
Converter). STM32 ADC can be composed of up to 3 ADCs with shared
resources like clock prescaler, common interrupt line and analog
reference voltage.
This core driver basically manages shared resources.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The DAC is used to find the peak level of an alternating voltage input
signal by a binary search using the output of a comparator wired to
an interrupt pin. Like so:
_
| \
input +------>-------|+ \
| \
.-------. | }---.
| | | / |
| dac|-->--|- / |
| | |_/ |
| | |
| | |
| irq|------<-------'
| |
'-------'
Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
We should be testing "ret" here.
Fixes: aa16c6bd0e ("iio:adc: Add support for AD7766/AD7767")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This includes two branch merges for elements that may also go via MFD.
New device support
* cros_ec
- new driver to support these Chrome OS contiguous sensors which are behind
the Chrome OS embedded controller. Requires a few minor MFD and chrome
platform changes. One follow up fix deals with some dependency issues in
Kconfig.
* mpu-3050
- new driver and device tree bindings for this venerable device.
* st_accel
- support for the lng2dm an
Driver features
* ad7192
- Add DVdd regulator handling
* ad9832
- Add DVDD regulator handling
* at91
- Suspend and resume support
* si7020
- Device tree bindings
* ti-am335x
- DMA support - uses dma to accelerate short bursts of read back rather
than full blown DMA buffer support. Greatly improved performance.
Includes an MFD addition to give access to the address needed for DMA.
* tsl2583
- Device tree bindings
Cleanups and minor fixes
* ad7192
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
- Rename reg variable to reflect which regulator it is
* ad5933
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
* ad7746
- Fix a missing return value (fallout from previous patch set)
* ad7780
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
* ad9832
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
- Rename reg regulator to reflect which one it is
* ad9834
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
* hts221
- Remove a duplicated include
* maxim thermocouple
- Handle a wrong storage side in read function. Prevent any problems that
might be introduced by additions to this driver in future.
* tsl2583 - big set from Brian Masney to drive this towards a staging
graduation.
- Convert to iio_chan_spec and read_raw / write_raw (in a couple of steps)
- Improved error handling in various functions
- Drop redundant power_state custom sysfs attribute.
- Use IIO_*_ATTR* macros for remaining attributes.
- Return an error code to userspace on invalid parameters being writen to
sysfs files.
- Add locking to various attribute accesses to remove possible races.
- Add defines for various magic numbers.
- Use smbus_read_byte_data instead of a write_byte followed by read_byte.
- Query only relevant registers in probe.
- Tidy up ordering of code comments.
- Remove a pointless power off sequence in taos_chip_on.
- Don't bother shutting down the chip when updating the lux table.
The table is held entirely in the driver and doesn't effect the chip at all.
- Drop a redundant i2c call in taos_als_calibrate where the same register
is read twice in a row.
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Merge tag 'iio-for-4.10b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing
Jonathan writes:
Second round of new device support, cleanups and fixes for IIO in the 4.10 cycle
This includes two branch merges for elements that may also go via MFD.
New device support
* cros_ec
- new driver to support these Chrome OS contiguous sensors which are behind
the Chrome OS embedded controller. Requires a few minor MFD and chrome
platform changes. One follow up fix deals with some dependency issues in
Kconfig.
* mpu-3050
- new driver and device tree bindings for this venerable device.
* st_accel
- support for the lng2dm an
Driver features
* ad7192
- Add DVdd regulator handling
* ad9832
- Add DVDD regulator handling
* at91
- Suspend and resume support
* si7020
- Device tree bindings
* ti-am335x
- DMA support - uses dma to accelerate short bursts of read back rather
than full blown DMA buffer support. Greatly improved performance.
Includes an MFD addition to give access to the address needed for DMA.
* tsl2583
- Device tree bindings
Cleanups and minor fixes
* ad7192
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
- Rename reg variable to reflect which regulator it is
* ad5933
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
* ad7746
- Fix a missing return value (fallout from previous patch set)
* ad7780
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
* ad9832
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
- Rename reg regulator to reflect which one it is
* ad9834
- Fix regulator naming to match datasheet
- Handle regulator errors correctly (so as to not break deferred probing)
* hts221
- Remove a duplicated include
* maxim thermocouple
- Handle a wrong storage side in read function. Prevent any problems that
might be introduced by additions to this driver in future.
* tsl2583 - big set from Brian Masney to drive this towards a staging
graduation.
- Convert to iio_chan_spec and read_raw / write_raw (in a couple of steps)
- Improved error handling in various functions
- Drop redundant power_state custom sysfs attribute.
- Use IIO_*_ATTR* macros for remaining attributes.
- Return an error code to userspace on invalid parameters being writen to
sysfs files.
- Add locking to various attribute accesses to remove possible races.
- Add defines for various magic numbers.
- Use smbus_read_byte_data instead of a write_byte followed by read_byte.
- Query only relevant registers in probe.
- Tidy up ordering of code comments.
- Remove a pointless power off sequence in taos_chip_on.
- Don't bother shutting down the chip when updating the lux table.
The table is held entirely in the driver and doesn't effect the chip at all.
- Drop a redundant i2c call in taos_als_calibrate where the same register
is read twice in a row.
This patch adds the required pieces to ti_am335x_adc driver for
DMA support
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add suspend/resume callback, support the pinctrl sleep state when
the system suspend as well.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This resolves a merge issue with
drivers/staging/iio/accel/sca3000_core.c and we want the fixes all in
here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds triggered buffer support for the ti-adc0832 driver. Tested with
ADC0831 and ADC0832 by using SYSFS trigger.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Commit 08e05d1fce ("ti-adc081c: Initial triggered buffer support") added
triggered buffer support but that also requires CONFIG_IIO_TRIGGERED_BUFFER,
otherwise we get errors from linker such as:
drivers/built-in.o: In function `adc081c_remove':
drivers/iio/adc/ti-adc081c.c:225: undefined reference to `iio_triggered_buffer_cleanup'
Fix these by explicitly selecting both CONFIG_IIO_TRIGGERED_BUFFER and
CONFIG_IIO_BUFFER in Kconfig for the driver.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Allow IIO_CHAN_INFO_SCALE and IIO_CHAN_INFO_OFFSET attributes for
processing by checking voltage from a regulator.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for the AD7766, AD7766-1, AD7766-2, AD7767, AD7767-1, AD7767-2
Analog to Digital converters. It's a family of single channel 24-bit SAR
ADCs. They are all digital interface compatible and the main difference is
the internal decimation rate and analog performance. For communication with
the host processor a SPI interface is used.
In addition the part has a data ready pin that is pulsed for one MCLK cycle
when a conversion has completed and can be used as a IIO trigger.
Datasheets:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD7766.pdfhttp://www.analog.com/media/en/technical-documentation/data-sheets/AD7767.pdf
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Use the new iio_trigger_validate_own_device() to verify that the trigger
can only be attached to the matching IIO device rather than using a custom
variant.
While the implementation of iio_trigger_validate_own_device() and the
custom variant and are not identical their behaviour is.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Check for iio_info structures that are only stored in the info field of a
iio_dev structure. This field is declared const, so iio_info structures
that have this property can be declared as const also.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct iio_info i@p = { ... };
@ok@
identifier r.i;
struct iio_dev e;
position p;
@@
e.info = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
struct iio_info e;
@@
e@i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct iio_info i = { ... };
// </smpl>
The result of size on this file before the change is:
text data bss dec hex filename
1529 312 0 1841 731
drivers/iio/adc/men_z188_adc.o
and after the change it is:
text data bss dec hex filename
1689 168 0 1857 741
drivers/iio/adc/men_z188_adc.o
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New device support
* ad8801 dac
- new driver supporting ad8801 and ad8803 DACs.
* adc12138
- new driver supporting TI adc12130/adc12132 and adc12138 ADCs.
* ltc2485 adc
- new driver
* mxc6255
- add support for the mxc6225 part name and fixup the ID check so it works.
* vz89x VOC sensor
- add support for the vz89te part which drops the voc_short channel and adds
CRCs compared to other supported parts.
New features
* core
- immutable triggers. These effectively grant exclusive control over a
trigger. The typical usecase is a device representing an analog part
(perhaps a MUX) that needs to control the sampling of a downstream
ADC.
- resource managed trigger registration and triggered_buffer_init.
- iio_push_event now protected against case of the event interface
registration not having yet occured. Only matters if an interrupt
can occur during this window - might happen on shared interrupt lines.
- helper to let a driver query if the trigger it is using is provided by
itself (using the convention of both device and trigger having the same
parent).
* tools
- iio-utils. Used channel modifier scaling in preference to generic scaling
when both exist.
* at91-adc
- Add support for touchscreen switches closure time needed by some newer
parts.
* stx104
- support the ADC channels on this ADC/DAC board. As these are the primary
feature of the board also move the driver to the iio/adc directory.
* sx9500
- device tree bindings.
Cleanups / Fixes
* ad5755
- fix an off-by-one on devnr limit check (introduced earlier this cycle)
* ad7266
- drop NULL check on devm_regulator_get_optional as it can't return NULL.
* ak8974
- avoid an unused functional warning due to rework in PM core code.
- remove .owner field setting as done by i2c_core.
* ina2xx
- clear out a left over debug field from chip global data.
* hid-sensors
- avoid an unused functional warning due to rework in PM core code.
* maxim-thermocouple
- fix non static symbol warnings.
* ms5611
- fetch and enable regulators unconditionally when they aren't optional.
* sca3000
- whitespace cleanup.
* st_sensors
- fetch and enable regulators unconditionally rather than having them
supported as optional regulators (missunderstanding on my part amongst
others a while back)
- followup to previous patch fixes error checking on the regulators.
- mark symbols static where possible.
- use the 'is it my trigger' help function. This prevents the odd case
of another device triggering from the st-sensors trigger whilst the
st-sensors trigger is itself not using it but rather using say an hrtimer.
* ti-ads1015
- add missing of_node_put.
* vz89x
- rework to all support of new devices.
- prevent reading of a corrupted buffer.
- fixup a return value of 0/1 in a bool returning function.
Address updates
- Vlad Dogaru email address change.
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Merge tag 'iio-for-4.9b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second set of iio new device support, features and cleanups for the 4.9 cycle.
New device support
* ad8801 dac
- new driver supporting ad8801 and ad8803 DACs.
* adc12138
- new driver supporting TI adc12130/adc12132 and adc12138 ADCs.
* ltc2485 adc
- new driver
* mxc6255
- add support for the mxc6225 part name and fixup the ID check so it works.
* vz89x VOC sensor
- add support for the vz89te part which drops the voc_short channel and adds
CRCs compared to other supported parts.
New features
* core
- immutable triggers. These effectively grant exclusive control over a
trigger. The typical usecase is a device representing an analog part
(perhaps a MUX) that needs to control the sampling of a downstream
ADC.
- resource managed trigger registration and triggered_buffer_init.
- iio_push_event now protected against case of the event interface
registration not having yet occured. Only matters if an interrupt
can occur during this window - might happen on shared interrupt lines.
- helper to let a driver query if the trigger it is using is provided by
itself (using the convention of both device and trigger having the same
parent).
* tools
- iio-utils. Used channel modifier scaling in preference to generic scaling
when both exist.
* at91-adc
- Add support for touchscreen switches closure time needed by some newer
parts.
* stx104
- support the ADC channels on this ADC/DAC board. As these are the primary
feature of the board also move the driver to the iio/adc directory.
* sx9500
- device tree bindings.
Cleanups / Fixes
* ad5755
- fix an off-by-one on devnr limit check (introduced earlier this cycle)
* ad7266
- drop NULL check on devm_regulator_get_optional as it can't return NULL.
* ak8974
- avoid an unused functional warning due to rework in PM core code.
- remove .owner field setting as done by i2c_core.
* ina2xx
- clear out a left over debug field from chip global data.
* hid-sensors
- avoid an unused functional warning due to rework in PM core code.
* maxim-thermocouple
- fix non static symbol warnings.
* ms5611
- fetch and enable regulators unconditionally when they aren't optional.
* sca3000
- whitespace cleanup.
* st_sensors
- fetch and enable regulators unconditionally rather than having them
supported as optional regulators (missunderstanding on my part amongst
others a while back)
- followup to previous patch fixes error checking on the regulators.
- mark symbols static where possible.
- use the 'is it my trigger' help function. This prevents the odd case
of another device triggering from the st-sensors trigger whilst the
st-sensors trigger is itself not using it but rather using say an hrtimer.
* ti-ads1015
- add missing of_node_put.
* vz89x
- rework to all support of new devices.
- prevent reading of a corrupted buffer.
- fixup a return value of 0/1 in a bool returning function.
Address updates
- Vlad Dogaru email address change.
On newer components compatible with the at91sam9x5, the Touchscreen
Switches Closure Time or TSSCTIM value of the Touchscreen Mode Register is
not filled at all.
On some hardware, having no time indicated for it may lead to incoherent
values and jitter.
We fix this time to 10us as it is usually difficult to retrieve impedance
values from LCD manufacturers.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch is inspired by a comment of Jonathan Cameron on patch of
Linus Walleij commit aeb55fff38 ("iio:
st_sensors: fetch and enable regulators unconditionally"). Because
changes made in this patch are actually reference generators they should
be using devm_regulator_get_optional, but if they do not explicitly set
the reference to NULL they should not be using IS_ERR_OR_NULL, but
simple IS_ERR check.
Suggested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Apex Embedded Systems STX104 features 16 channels of single-ended (8
channels of true differential) 16-bit analog input. Differential input
configuration may be selected via a physical jumper on the device.
Similarly, input polarity (unipolar/bipolar) is configured via a
physical jumper on the device.
Input gain selection is available to the user via software, thus
allowing eight possible input ranges: +-10V, +-5V, +-2.5V, +-1.25V,
0 to 10V, 0 to 5V, 0 to 2.5V, and 0 to 1.25V. Four input gain
configurations are supported: x1, x2, x4, and x8.
This ADC resolution is 16-bits (1/65536 of full scale). Analog input
samples are taken on software trigger; neither FIFO sampling nor
interrupt triggering is supported by this driver.
The Apex Embedded Systems STX104 is primarily an analog-to-digital
converter device. The STX104 IIO driver was initially placed in the DAC
directory because only the DAC portion of the STX104 was supported at
the time. Now that ADC support has been added to the STX104 IIO driver,
the driver should be moved to the more appropriate ADC directory.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
commit 1961bce764 "iio: ina2xx: Remove trace_printk debug
statements" removed the code that used the chip->prev_ns field.
This patch cleans it up further by removing the unused field
and assignments.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds Texas Instruments' ADC12130/ADC12132/ADC12138 12-bit plus
sign ADC driver. I have tested with the ADC12138. The ADC12130 and
ADC12132 are not tested but these are similar to ADC12138 except that
the mode programming instruction is a bit different.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
When terminating for_each_child_of_node() iteration with
break or return, of_node_put() should be used to prevent
stale device node references from being left behind.
This is detected by Coccinelle semantic patch.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Adds basic support for the LTC2485 ADC - a delta-sigma analog-to-digital
converter with an I2C interface that operates in single shot conversion
mode.
The driver supports an on board 5V reference and the power-on default
configuration which rejects both 50hz & 60hz line frequencies and
operates in 1x speed mode.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Device support
* ak8974
- New driver and bindings for this 2009 vintage magnetometer (it was very
popular back then!)
* atlas-ph-sensor
- ORP sensor support(I had to look up what one of these was)
* cio-dac
- New driver for Measurement Computing DAC boards
* dmard06
- New driver for Domintech DMARDO6 accelerometer. Also vendor prefix.
* dmard09
- New driver for Domintech DMARD09 accelerometer.
* maxim-thermocouple
- max6675 and max31855 new driver
* mt6577 auxdac
- new driver for this Mediatek chip mt2701, mt6577 and mt8173 have this
hardware.
* ti-adc161s626
- new driver for this TI single channel differential ADC.
* vcnl4000
- support vcnl4010 and vcnl4020 which are compatible for all features
currently supported by this driver.
New features
* Core
- Allow retrieving of underlying iio_dev from a callback buffer handle.
This is needed to allow client drivers to perform operations such as
configuring the trigger used.
* hid-sensors
- asynchronous resume support to avoid really long resume times.
* kxcjk-1013
- add the mysterious KIOX000A ACPI id seen in the wild.
* Tools
- lsiio now enumerates processed as well as raw channels.
Cleanup
* ad7298
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
* ad7793
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
* ade7854
- checkpatch fixups (alignment of parameters)
* atlas-ph-sensor
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
- Switch to REGCACHE_NONE as there are no useful register to cache.
* bma180
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
* hdc100x
- Add mention of the HDC1000 and HDC1008 to the Kconfig help text.
* isl29018
- Add driver specific prefixes to defines and function names.
- Remove excessive logging.
- Drop newlines which add nothing to readability.
- General tidying up of comments.
- Drop I2C_CLASS_HWMON as irrelevant to driver.
* isl29028
- Add driver specific prefixes to defines, enums and function names.
- Drop comma's from available attribute output as not ABI compliant.
- Drop I2C_CLASS_HWMON as irrelevant to driver.
* kxsd9
- devicetree bindings.
* mag3110
- This one wasn't locking to protect against mode switches during
raw_reads. Use the iio_claim_direct_mode function to fix this buglet.
* maxim-theromcouple
- Fix missing selects for triggered buffer support in Kconfig.
* nau7802
- Use complete instead of complete_all as only one completion at a time.
* sx9500
- Use complete instead of complete_all as only one completion at a time.
* us5182d
- Add a missing error code asignment instead of checking the result of
an already checked statement.
* vcnl4000
- Use BIT macro where appropriate.
- Refactor return codes in read_raw callback.
- Add some missing locking for concurrent accesses to the device.
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Merge tag 'iio-for-4.9a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into work-testing
Jonathan writes:
First round of new features, device support and cleanups for IIO in the 4.9 cycle.
Device support
* ak8974
- New driver and bindings for this 2009 vintage magnetometer (it was very
popular back then!)
* atlas-ph-sensor
- ORP sensor support(I had to look up what one of these was)
* cio-dac
- New driver for Measurement Computing DAC boards
* dmard06
- New driver for Domintech DMARDO6 accelerometer. Also vendor prefix.
* dmard09
- New driver for Domintech DMARD09 accelerometer.
* maxim-thermocouple
- max6675 and max31855 new driver
* mt6577 auxdac
- new driver for this Mediatek chip mt2701, mt6577 and mt8173 have this
hardware.
* ti-adc161s626
- new driver for this TI single channel differential ADC.
* vcnl4000
- support vcnl4010 and vcnl4020 which are compatible for all features
currently supported by this driver.
New features
* Core
- Allow retrieving of underlying iio_dev from a callback buffer handle.
This is needed to allow client drivers to perform operations such as
configuring the trigger used.
* hid-sensors
- asynchronous resume support to avoid really long resume times.
* kxcjk-1013
- add the mysterious KIOX000A ACPI id seen in the wild.
* Tools
- lsiio now enumerates processed as well as raw channels.
Cleanup
* ad7298
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
* ad7793
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
* ade7854
- checkpatch fixups (alignment of parameters)
* atlas-ph-sensor
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
- Switch to REGCACHE_NONE as there are no useful register to cache.
* bma180
- use iio_device_claim_direct_mode and friends to simplify locking around
mode switching and drop some boilerplate.
* hdc100x
- Add mention of the HDC1000 and HDC1008 to the Kconfig help text.
* isl29018
- Add driver specific prefixes to defines and function names.
- Remove excessive logging.
- Drop newlines which add nothing to readability.
- General tidying up of comments.
- Drop I2C_CLASS_HWMON as irrelevant to driver.
* isl29028
- Add driver specific prefixes to defines, enums and function names.
- Drop comma's from available attribute output as not ABI compliant.
- Drop I2C_CLASS_HWMON as irrelevant to driver.
* kxsd9
- devicetree bindings.
* mag3110
- This one wasn't locking to protect against mode switches during
raw_reads. Use the iio_claim_direct_mode function to fix this buglet.
* maxim-theromcouple
- Fix missing selects for triggered buffer support in Kconfig.
* nau7802
- Use complete instead of complete_all as only one completion at a time.
* sx9500
- Use complete instead of complete_all as only one completion at a time.
* us5182d
- Add a missing error code asignment instead of checking the result of
an already checked statement.
* vcnl4000
- Use BIT macro where appropriate.
- Refactor return codes in read_raw callback.
- Add some missing locking for concurrent accesses to the device.
SARADC controller needs to be reset before programming it, otherwise
it will not function properly.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-iio@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add Mediatek auxadc driver based on iio.
It will register a device in iio and support iio.
So thermal can read auxadc channel to sample data by iio device.
It is tested successfully on mt2701 platform.
Mt8173 and mt6577 platforms are not tested.
But the expectation is compatible.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Now that open delay and sample delay for each channel is configurable
via DT, the default IDLE_TIMEOUT value is not enough as this is
calculated based on hardcoded macros. This results in driver returning
EBUSY sometimes. Fix this by increasing the timeout
value based on maximum value possible to open delay and sample delays
for each channel.
Fixes: 5dc11e8106 ("iio: adc: ti_am335x_adc: make sample delay, open delay, averaging DT parameters")
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
It is possible that two or more ADC channels can be simultaneously
requested for raw samples, in which case there can be race in access to
FIFO data resulting in loss of samples.
If am335x_tsc_se_set_once() is called again from tiadc_read_raw(), when
ADC is still acquired to sample one of the channels, the second process
might be put into uninterruptible sleep state. Fix these issues, by
protecting FIFO access and channel configurations with a mutex. Since
tiadc_read_raw() might take anywhere between few microseconds to few
milliseconds to finish execution (depending on averaging and delay
values supplied via DT), its better to use mutex instead of spinlock.
Fixes: 7ca6740cd1 ("mfd: input: iio: ti_amm335x: Rework TSC/ADC synchronization")
Signed-off-by: Vignesh R <vigneshr@ti.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for Texas Instruments ADC141S626, and ADC161S626 chips.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The call to i2c_get_clientdata(client) returns a struct iio_dev*, not
the needed struct ads1015_data*. We need here an intermediate step as
in the function: void ads1015_get_channels_config(struct i2c_client *client).
Signed-off-by: Giorgio Dal Molin <giorgio.nicole@arcor.de>
Fixes: ecc24e72f4 ("iio: adc: Add TI ADS1015 ADC driver support")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There is only one waiter for the completion, therefore there
is no need to use complete_all(). Let's make that clear by
using complete() instead of complete_all().
The usage pattern of the completion is:
waiter context waker context
nau7802_read_irq()
reinit_completion()
nau7802_read_conversion()
wait_for_completion_interruptible_timeout()
nau7802_eoc_trigger()
complete()
Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver always assumes that an input device has been created when
reading channel 3. This causes a kernel panic when dereferencing
st->ts_input.
The change was introduced in
commit 84882b0603 ("iio: adc: at91_adc: Add support for touchscreens
without TSMR"). Earlier versions only entered that part of the if-else
statement if only the following flags are set:
AT91_ADC_IER_XRDY | AT91_ADC_IER_YRDY | AT91_ADC_IER_PRDY
Signed-off-by: Anders Darander <anders@chargestorm.se>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The data buffer for captured mode for the ad799x driver is allocated in the
update_scan_mode() callback. This callback is not set in the iio_info
struct for the ad7791/ad7995/ad7999, which means that the data buffer is
not allocated when a captured transfer is started. As a result the driver
crashes when the first sample is received. To fix this properly set the
update_scan_mode() callback.
Fixes: d8dca33027 ("staging:iio:ad799x: Preallocate sample buffer")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New core features
- Selection of the clock source for IIO timestamps. This is done per device
as it makes little sense to have events in one timebase and data timestamped
on another. Biggest reason for this is that we currently use a clock
source which is non monotonic which can result in 'interesting' data sets.
(Includes export for get_monotonic_corse64 which Thomas Gleixner didn't mind
in an earlier version.)
- MAINTAINERS add the git tree to the list for IIO.
New device support + a kind of indirect staging graduation.
* Broadcom iproc-static-adc
- new driver
* mcp4531
- support for MCP454x, MCP456x, MCP464x and MCP466x potentiometers
* mpu6050
- support the IC20608 6 axis motion tracking device
* st-sensors
- support the lis3l02dq + drop the lis3l02dq driver from staging.
The general purpose driver is missing event support, but good to get
rid of this driver which was rather long in the tooth.
New driver features
* ak8975
- Add vid regulator support and refactor handling in general.
- Allow a delay after enabling regulators.
- Runtime and system PM.
* bmg160
- filter frequency control support.
* bmp280
- SPI device support.
- EOC interrupt support for the BMP085
- power management support.
- supply regulator support.
- reset gpio support
- dt bindings for reset gpio and regulators.
- of table to support device tree registration
* max1363
- Device tree bindings.
* mcp4531
- Device tree bindings.
* st-pressure
- temperature channels as part of triggered buffer (previously not due
probably to alignment issues - see below).
- lps22hb open drain interrupt support.
- lps22hb temperature channel support
Cleanups and reworkings.
* numerous ADC drivers
- ensure the iio_dev->dev.of_node is set to the parent dev.of_node so
as to allow client bindings to find the device.
* ak8975
- Fix incorrect handling of missing regulator
- make sure power is down and remove.
* bmp280
- read the calibration data only once as it doesn't change.
* isl29125
- Use a few macros to make code a touch more readable.
* mma8452
- fix a memory leak on error.
- drop an unecessary bit of return value handling.
* potentiometer kconfig
- typo fix.
* st-pressure
- drop some uninformative default assignments of elements of the channel
array structure (aids readability).
* st-sensors
- Harden interrupt handling considerably. These are actually all using
level interrupts, but at least two known boards have them wired to
edge only interrupt chips. Hence a slightly interesting bit of handling
is needed in which we first allow for the easy option (level triggered) and
secondly check the status registers before reenabling edge interrupts and
fall back to a tight loop in the thread until we successfully clear the
interrupt. No harm is done if we never succeed in doing so. It's an odd
patch that has been through a lot of revisions to reach a consensus on how
to handle what is basically broken hardware (which the previous defaults
allowed to kind of work).
- Fix alignment to defined storagebytes boundaries.
- Ensure alignment of power of 2 byte boundaries. This has always in theory
been part of the ABI of IIO, but we missed a few that snuck in that need
fixing. The effect was minor as they were only followed by timestamp
channels which were correctly aligned,
- Add some docs to explain the gain calculations.
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Merge tag 'iio-for-4.8c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Third set of IIO new device support, features and cleanups for the 4.8 cycle.
New core features
- Selection of the clock source for IIO timestamps. This is done per device
as it makes little sense to have events in one timebase and data timestamped
on another. Biggest reason for this is that we currently use a clock
source which is non monotonic which can result in 'interesting' data sets.
(Includes export for get_monotonic_corse64 which Thomas Gleixner didn't mind
in an earlier version.)
- MAINTAINERS add the git tree to the list for IIO.
New device support + a kind of indirect staging graduation.
* Broadcom iproc-static-adc
- new driver
* mcp4531
- support for MCP454x, MCP456x, MCP464x and MCP466x potentiometers
* mpu6050
- support the IC20608 6 axis motion tracking device
* st-sensors
- support the lis3l02dq + drop the lis3l02dq driver from staging.
The general purpose driver is missing event support, but good to get
rid of this driver which was rather long in the tooth.
New driver features
* ak8975
- Add vid regulator support and refactor handling in general.
- Allow a delay after enabling regulators.
- Runtime and system PM.
* bmg160
- filter frequency control support.
* bmp280
- SPI device support.
- EOC interrupt support for the BMP085
- power management support.
- supply regulator support.
- reset gpio support
- dt bindings for reset gpio and regulators.
- of table to support device tree registration
* max1363
- Device tree bindings.
* mcp4531
- Device tree bindings.
* st-pressure
- temperature channels as part of triggered buffer (previously not due
probably to alignment issues - see below).
- lps22hb open drain interrupt support.
- lps22hb temperature channel support
Cleanups and reworkings.
* numerous ADC drivers
- ensure the iio_dev->dev.of_node is set to the parent dev.of_node so
as to allow client bindings to find the device.
* ak8975
- Fix incorrect handling of missing regulator
- make sure power is down and remove.
* bmp280
- read the calibration data only once as it doesn't change.
* isl29125
- Use a few macros to make code a touch more readable.
* mma8452
- fix a memory leak on error.
- drop an unecessary bit of return value handling.
* potentiometer kconfig
- typo fix.
* st-pressure
- drop some uninformative default assignments of elements of the channel
array structure (aids readability).
* st-sensors
- Harden interrupt handling considerably. These are actually all using
level interrupts, but at least two known boards have them wired to
edge only interrupt chips. Hence a slightly interesting bit of handling
is needed in which we first allow for the easy option (level triggered) and
secondly check the status registers before reenabling edge interrupts and
fall back to a tight loop in the thread until we successfully clear the
interrupt. No harm is done if we never succeed in doing so. It's an odd
patch that has been through a lot of revisions to reach a consensus on how
to handle what is basically broken hardware (which the previous defaults
allowed to kind of work).
- Fix alignment to defined storagebytes boundaries.
- Ensure alignment of power of 2 byte boundaries. This has always in theory
been part of the ABI of IIO, but we missed a few that snuck in that need
fixing. The effect was minor as they were only followed by timestamp
channels which were correctly aligned,
- Add some docs to explain the gain calculations.
Adding missing indio_dev->dev.of_node references to allow iio consumers
to access the device channels.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add the pointer to the device tree node of the ADC so that iio
consumers can reference the respective channels.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds the necessary device tree binding to allow DT probing of
currently supported parts.
Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch adds basic driver implementation for Broadcom's
static adc controller used in iProc SoC's family.
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Adds a new per-device sysfs attribute "current_timestamp_clock" to allow
userspace to select a particular POSIX clock for buffered samples and
events timestamping.
Following clocks, as listed in clock_gettime(2), are supported:
CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW,
CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and
CLOCK_TAI.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Firstly some contact detail updates:
* NXP took over freescale. Update the mma8452 header to reflect this.
* Martin Kepplinger email address change in mma8452 header.
* Adriana Reus has changed email address. Update .mailmap.
* Matt Ranostay has changed email address. Update .mailmap.
New Device Support
* max1363
- add the missing i2c_device_ids for a couple of parts so they can actually
be used.
* ms5867
- add device ids for ms5805 and ms5837 parts.
New Features
* ad5755
- DT support. This one was a bit controversial and under review for a long
time. Still no one could come up with a better solution.
* stx104
- add gpio support
* ti-adc081c
- Add ACPI device ID matching.
Core changes
* Refuse to register triggers with duplicate names. There is no way to
distinguish between them so this makes no sense. A few drivers do not
generate unique names for each instance of the device present. We can't
fix this without changing ABI so leave them and wait for someone to
actually take the rare step of two identical accelerometers on the same
board.
* buffer-dma
- use ARRAY_SIZE in a few appropriate locations.
Tools
* Fix the fact that the --trigger-num option in generic_buffer didn't allow
0 which is perfectly valid in the ABI.
Cleanups
* as3935
- improve error reporting.
- remove redundant zeroing of a field in iio_priv.
* gp2ap020a00f
- use the iio_device_claim_*_mode helpers rather than open coding locking
around mode changes.
* isl29125
- use the iio_device_claim_*_mode helpers rather than open coding locking.
* lidar
- use the iio_device_claim_*_mode helpers rather than open coding locking.
* mma8452
- more detail in devices supported description in comments (addresses and
similar)
* sca3000
- add a missing error check.
* tcs3414
- use the iio_device_claim_*_mode helpers rather than open coding locking.
* tcs3472
- use the iio_device_claim_*_mode helpers rather than open coding locking.
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Merge tag 'iio-for-4.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second round of new iio device support, features and cleanups in the 4.8 cycle
Firstly some contact detail updates:
* NXP took over freescale. Update the mma8452 header to reflect this.
* Martin Kepplinger email address change in mma8452 header.
* Adriana Reus has changed email address. Update .mailmap.
* Matt Ranostay has changed email address. Update .mailmap.
New Device Support
* max1363
- add the missing i2c_device_ids for a couple of parts so they can actually
be used.
* ms5867
- add device ids for ms5805 and ms5837 parts.
New Features
* ad5755
- DT support. This one was a bit controversial and under review for a long
time. Still no one could come up with a better solution.
* stx104
- add gpio support
* ti-adc081c
- Add ACPI device ID matching.
Core changes
* Refuse to register triggers with duplicate names. There is no way to
distinguish between them so this makes no sense. A few drivers do not
generate unique names for each instance of the device present. We can't
fix this without changing ABI so leave them and wait for someone to
actually take the rare step of two identical accelerometers on the same
board.
* buffer-dma
- use ARRAY_SIZE in a few appropriate locations.
Tools
* Fix the fact that the --trigger-num option in generic_buffer didn't allow
0 which is perfectly valid in the ABI.
Cleanups
* as3935
- improve error reporting.
- remove redundant zeroing of a field in iio_priv.
* gp2ap020a00f
- use the iio_device_claim_*_mode helpers rather than open coding locking
around mode changes.
* isl29125
- use the iio_device_claim_*_mode helpers rather than open coding locking.
* lidar
- use the iio_device_claim_*_mode helpers rather than open coding locking.
* mma8452
- more detail in devices supported description in comments (addresses and
similar)
* sca3000
- add a missing error check.
* tcs3414
- use the iio_device_claim_*_mode helpers rather than open coding locking.
* tcs3472
- use the iio_device_claim_*_mode helpers rather than open coding locking.
The driver supports MAX11644, MAX11645, MAX11646 and MAX11647 parts. But
the corresponding i2c_device_id are missing. Add them!
Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add ACPI device ID matching for TI ADC081C/ADC101C/ADC121C ADCs.
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Currently the ad7266 driver treats any failure to get vref as though the
regulator were not present but this means that if probe deferral is
triggered the driver will act as though the regulator were not present.
Instead only use the internal reference if we explicitly got -ENODEV which
is what is returned for absent regulators.
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ad7266 driver attempts to support deciding between the use of internal
and external power supplies by checking to see if an error is returned when
requesting the regulator. This doesn't work with the current code since the
driver uses a normal regulator_get() which is for non-optional supplies
and so assumes that if a regulator is not provided by the platform then
this is a bug in the platform integration and so substitutes a dummy
regulator. Use regulator_get_optional() instead which indicates to the
framework that the regulator may be absent and provides a dummy regulator
instead.
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
All regulator_get() variants return either a pointer to a regulator or an
ERR_PTR() so testing for NULL makes no sense and may lead to bugs if we
use NULL as a valid regulator. Fix this by using IS_ERR() as expected.
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New device support
* ads1015
- add ads1115 support
* bma220 accelerometer
- new driver
- triggered buffer support.
* bmc150
- add bmm150 support.
* bmp280
- bme280 support with addition of humidity channel.
* max5487 potentiometer
- new driver
* MMA7660FC accelerometer.
- New driver
* st-pressure
- support for the lps22hb
* loop trigger.
- This one is *nasty* but we have real applications (parrot drones) where
it is useful. The trigger basically spins as hard as it can firing off
a new trigger each time all triggered devices come back to say they are
done. It doesn't hang a machine even when doing it on a dummy driver.
A lot nicer than having this implemented within lots of device drivers
anyway.
Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
- IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.
New features
* ak8975
- support adapters that are limited to byte data only by allowing the
emulated block read i2c function that was recently introduced.
* atlas-ph
- support atlas-ec (electrical conductivity sensor)
* bmi160
- add available frequency and scale attributes to make the driver
more user friendly (and avoid having to read the datasheet to know
what will work).
* dummy
- move creation to configfs interface. It's not real hardware so we
are not that worried about the ABI breakage ;)
* mma8452
- oversampling ration support
* nau7802
- expose available gains to make life easier for userspace.
* st-sensors
- allow use of emulation for SMBus block reads as all the st parts support
it.
* ti-ads1015
- list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing. Drop one redundant one
as well.
Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
- use direct mode claim function rather than open coding it during sensor
read (prevents switching on buffers mid read).
* ad7793, ad7791
- use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
code to do anything useful anyway and that is still being written and under
control of TI. Ultimately we may have other libraries to do pulse
oximetry with these devices but we aren't aware of any yet.
- kernel-doc format fixes
- drop ifdef fun around of_match_ptr - it's not worth the mess to save
a tiny amount of space.
- drop some unnecessary register initializations.
- drop the weird locked gain modes as they gain us nothing (can just set
all gains separately).
- remove handling of offset attributes seeing as no channels actually have
them (oops)
- Drop the LED3 input channel as it's an alias for ALED2.
- *big one* remove channel names - an experiment that turned out to not
make sense - see patch for details.
- use regmap fields to clean up code.
- tie the tia gain stages to appropriate channels in the ABI as that is
what they really effect. Same with the LED currents.
- cleanout some unused defines and fix a missnamed one.
* atlas-ph
- reorganise to allow support of other similar parts.
* bmc150
- document supported chips in kconfig help.
* jsa1212
- drop an unneeded i2c functionality check for functionality the driver
doesn't use.
* mxs-lradc
- simply touch screen registration code.
- remove the touch screen unregister as all devm based now.
- disable only those channels that are masked in hardware stop (others
are already dealt with elsewhere)
* st-sensors
- unexport st_sensors_get_buffer_element as nothing outside the st-sensors
core driver uses it.
- fix handling of failure to start up regulators.
* tpl0102
- drop an i2c functionality test for features that aren't needed.
* ti-am335x
- use variable name rather than type in sizeof for clarity.
- use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
Tools
* Add install / uninstall to makefile. Someone cares, so presumably
some people will find it useful!
* generic_buffer
- rename to iio_generic_buffer to line up with other tools.
- handle cleanup when receiving signals
- Add a --device-num option and a --trigger-num option rather than
relying on naming which doesn't work if you have two of the same part.
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Merge tag 'iio-for-4.8a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of IIO new device support, features and cleanups for the 4.8 cycle.
New device support
* ads1015
- add ads1115 support
* bma220 accelerometer
- new driver
- triggered buffer support.
* bmc150
- add bmm150 support.
* bmp280
- bme280 support with addition of humidity channel.
* max5487 potentiometer
- new driver
* MMA7660FC accelerometer.
- New driver
* st-pressure
- support for the lps22hb
* loop trigger.
- This one is *nasty* but we have real applications (parrot drones) where
it is useful. The trigger basically spins as hard as it can firing off
a new trigger each time all triggered devices come back to say they are
done. It doesn't hang a machine even when doing it on a dummy driver.
A lot nicer than having this implemented within lots of device drivers
anyway.
Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
- IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.
New features
* ak8975
- support adapters that are limited to byte data only by allowing the
emulated block read i2c function that was recently introduced.
* atlas-ph
- support atlas-ec (electrical conductivity sensor)
* bmi160
- add available frequency and scale attributes to make the driver
more user friendly (and avoid having to read the datasheet to know
what will work).
* dummy
- move creation to configfs interface. It's not real hardware so we
are not that worried about the ABI breakage ;)
* mma8452
- oversampling ration support
* nau7802
- expose available gains to make life easier for userspace.
* st-sensors
- allow use of emulation for SMBus block reads as all the st parts support
it.
* ti-ads1015
- list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing. Drop one redundant one
as well.
Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
- use direct mode claim function rather than open coding it during sensor
read (prevents switching on buffers mid read).
* ad7793, ad7791
- use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
code to do anything useful anyway and that is still being written and under
control of TI. Ultimately we may have other libraries to do pulse
oximetry with these devices but we aren't aware of any yet.
- kernel-doc format fixes
- drop ifdef fun around of_match_ptr - it's not worth the mess to save
a tiny amount of space.
- drop some unnecessary register initializations.
- drop the weird locked gain modes as they gain us nothing (can just set
all gains separately).
- remove handling of offset attributes seeing as no channels actually have
them (oops)
- Drop the LED3 input channel as it's an alias for ALED2.
- *big one* remove channel names - an experiment that turned out to not
make sense - see patch for details.
- use regmap fields to clean up code.
- tie the tia gain stages to appropriate channels in the ABI as that is
what they really effect. Same with the LED currents.
- cleanout some unused defines and fix a missnamed one.
* atlas-ph
- reorganise to allow support of other similar parts.
* bmc150
- document supported chips in kconfig help.
* jsa1212
- drop an unneeded i2c functionality check for functionality the driver
doesn't use.
* mxs-lradc
- simply touch screen registration code.
- remove the touch screen unregister as all devm based now.
- disable only those channels that are masked in hardware stop (others
are already dealt with elsewhere)
* st-sensors
- unexport st_sensors_get_buffer_element as nothing outside the st-sensors
core driver uses it.
- fix handling of failure to start up regulators.
* tpl0102
- drop an i2c functionality test for features that aren't needed.
* ti-am335x
- use variable name rather than type in sizeof for clarity.
- use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
Tools
* Add install / uninstall to makefile. Someone cares, so presumably
some people will find it useful!
* generic_buffer
- rename to iio_generic_buffer to line up with other tools.
- handle cleanup when receiving signals
- Add a --device-num option and a --trigger-num option rather than
relying on naming which doesn't work if you have two of the same part.
Fix the code formatting to use the kernel preferred style
of using the actual variables to determize the size using
the sizeof() operator.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Driver was checking for direct mode and trying to lock it, but
left a gap where mode could change before the desired operation.
Use iio_device_claim_direct_mode() to guarantee device stays in
direct mode.
Refactor function to clarify look-up followed by lock sequence.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Driver was checking for direct mode and trying to lock it, but
left a gap where mode could change before the desired operation.
Use iio_device_claim_direct_mode() to guarantee device stays in
direct mode.
Refactor function to clarify look-up followed by lock sequence.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Driver was checking for direct mode but not locking it down.
Use iio_device_claim_direct_mode() to guarantee device stays
in direct mode.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add datasheet names for ADC channels to allow iio consumers access.
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Nuvoton NAU7802 ADC is able to adjust its gain but prior knowledge of
its possible values was required to adjust it. Users had to guess the
possible gain values based on the ADC datasheet or on this driver's code.
This exposes the possible values in the in_voltage_scale_available file of
each nau7802 ADC device. The gain is set for the whole ADC and is therefore
not configurable by channel. Thus, there exists only one
in_voltage_scale_available file for each nau7802 ADC device even if it has
two separate channels.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
TI ADS1115 is a 16-bit resolution ADC that is register map
compatible with the ADS1015 device.
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Acked-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Disabling of the touchscreen IRQs should be done in
mxs_lradc_disable_ts. So disable only the masked virtual channels
in mxs_lradc_hw_stop and finally remove the unused function
mxs_lradc_irq_en_mask.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
After using devm_input_allocate_device for registration
the function mxs_lradc_ts_unregister isn't necessary anymore
since mxs_lradc_ts_close already does the job.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch simplifies the TS registration of mxs-lradc by
using devm_input_allocate_device.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Bit of a bumper set for new drivers but plenty of other stuff here as well!
New device support
* ad5592R ADC/DAC
- new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips.
* Aosong am2315 relative humidity
- new driver with triggered buffer support in follow up patch.
* bmi160 imu
- new driver
* bmp280
- bmp180 support - note there is support in the misc/bmp085 driver. Intent
is to remove that driver long term.
* invensense mpu6050
- cleanup leading to explicit support of mpu9150 with a good few cleanups
along the way.
* Hope RF hp03 pressure and temperature sensor.
- new driver
* maxim DS1803 potentiometer
- new driver
* maxim max44000 light and proximity sensor
- new driver built in a series of steps to support pretty much everything.
* ROHM BH1780 light sensor
- new driver. There is an existing driver in misc that this is pretty much
intended to replace. The discussion on whether to support the non standard
interface of that driver is some way is continuing.
* st-gyro
- lsm9ds0-gyro. The accel/magn side of this will take a while longer as
extensions to the st library are needed for cases where two types of sensor
share a single i2c address.
* ti-adc081c
- support the adc101c and adc121c
* Vishay VEML6070 UV sensor
- new driver.
New features
* core
- devm_ APIs for channel_get and channel_get_all. The first user of these
is the generic ADC based thermal driver. As it is going through the
thermal tree these will be picked up as a patch to that next cycle as that
is how the author preferred to do it.
- mounting matrix support. This new core support allows devices to provide
to userspace (typically from the device tree) allowing compensation for how
the sensor is mounted on the device. First examples are on UAVs but it
has a more mundane use on typical phone where the chip may be on the front
or the back of the circuit board and soldered at any angle. Includes
support for this ABI in ak8975 (which has an older interface, now
deprecated) and mpu6050.
* tools
- add a -a option to enable all available channels in generic_buffer sample.
Makes it somewhat easier to use.
* adis library and drivers
- support manual self test flag clearing. This has technically been broken
for a very long time - result is an offset on readings as the applied field
is on all the time.
* ak8975
- triggered buffer support
* bmc150
- spi support (including splitting the driver into core and i2c parts)
* bmp280
- oversampling support.
* dht11
- improved logging - useful to debug timing issues on this quirky device.
* st-sensors
- read each channel invidivually as not all support the optimization of
reading in bulk. This is technically a fix, but will need to be backported
if desired.
- support open drain and shared interrupts.
* ti-adc081c
- triggered buffer support.
Cleanups
* inkern
- white space fix.
* ad7606
- use the iio_device_claim_direct_mode call rather than open coding equiv.
* ad799x
- white space fix.
* ad9523
- unsigned -> unsigned int
* apds9660
- brace location tidying up.
- silence an uninitialized variable warning.
* ak8975
- else and brace on same line fix.
* at91_adc
- white space fixes.
* bmc150
- use regmap stored copy of the device pointer rather than having an
additional copy.
* bmg160
- use regmap stored copy of the device pointer rather than having an
additional copy.
* hid-sensors
- white space fixes.
* mcp3422
- white space fix.
* mma7455
- use regmap to retrieve the device struct rather than carrying another copy
in the private data.
* ms_sensors
- white space fix.
* mxs-lradc
- move current bindings out of staging - some will be shortly deprecated but
the reality is that we have device trees out there using them so they will
need to be supported for some time. They accidentally got left behind
when the driver graduated from staging.
- white space cleanup.
- set INPUT_PROP_DIRECT.
- move ts config into a better function.
- move the STMP reset out of the ADC init.
* vf610_adc
- case label indenting fix.
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Merge tag 'iio-for-4.7b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing
Jonathan writes:
2nd set of new device support, features and cleanup for IIO in the 4.7 cycle.
Bit of a bumper set for new drivers but plenty of other stuff here as well!
New device support
* ad5592R ADC/DAC
- new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips.
* Aosong am2315 relative humidity
- new driver with triggered buffer support in follow up patch.
* bmi160 imu
- new driver
* bmp280
- bmp180 support - note there is support in the misc/bmp085 driver. Intent
is to remove that driver long term.
* invensense mpu6050
- cleanup leading to explicit support of mpu9150 with a good few cleanups
along the way.
* Hope RF hp03 pressure and temperature sensor.
- new driver
* maxim DS1803 potentiometer
- new driver
* maxim max44000 light and proximity sensor
- new driver built in a series of steps to support pretty much everything.
* ROHM BH1780 light sensor
- new driver. There is an existing driver in misc that this is pretty much
intended to replace. The discussion on whether to support the non standard
interface of that driver is some way is continuing.
* st-gyro
- lsm9ds0-gyro. The accel/magn side of this will take a while longer as
extensions to the st library are needed for cases where two types of sensor
share a single i2c address.
* ti-adc081c
- support the adc101c and adc121c
* Vishay VEML6070 UV sensor
- new driver.
New features
* core
- devm_ APIs for channel_get and channel_get_all. The first user of these
is the generic ADC based thermal driver. As it is going through the
thermal tree these will be picked up as a patch to that next cycle as that
is how the author preferred to do it.
- mounting matrix support. This new core support allows devices to provide
to userspace (typically from the device tree) allowing compensation for how
the sensor is mounted on the device. First examples are on UAVs but it
has a more mundane use on typical phone where the chip may be on the front
or the back of the circuit board and soldered at any angle. Includes
support for this ABI in ak8975 (which has an older interface, now
deprecated) and mpu6050.
* tools
- add a -a option to enable all available channels in generic_buffer sample.
Makes it somewhat easier to use.
* adis library and drivers
- support manual self test flag clearing. This has technically been broken
for a very long time - result is an offset on readings as the applied field
is on all the time.
* ak8975
- triggered buffer support
* bmc150
- spi support (including splitting the driver into core and i2c parts)
* bmp280
- oversampling support.
* dht11
- improved logging - useful to debug timing issues on this quirky device.
* st-sensors
- read each channel invidivually as not all support the optimization of
reading in bulk. This is technically a fix, but will need to be backported
if desired.
- support open drain and shared interrupts.
* ti-adc081c
- triggered buffer support.
Cleanups
* inkern
- white space fix.
* ad7606
- use the iio_device_claim_direct_mode call rather than open coding equiv.
* ad799x
- white space fix.
* ad9523
- unsigned -> unsigned int
* apds9660
- brace location tidying up.
- silence an uninitialized variable warning.
* ak8975
- else and brace on same line fix.
* at91_adc
- white space fixes.
* bmc150
- use regmap stored copy of the device pointer rather than having an
additional copy.
* bmg160
- use regmap stored copy of the device pointer rather than having an
additional copy.
* hid-sensors
- white space fixes.
* mcp3422
- white space fix.
* mma7455
- use regmap to retrieve the device struct rather than carrying another copy
in the private data.
* ms_sensors
- white space fix.
* mxs-lradc
- move current bindings out of staging - some will be shortly deprecated but
the reality is that we have device trees out there using them so they will
need to be supported for some time. They accidentally got left behind
when the driver graduated from staging.
- white space cleanup.
- set INPUT_PROP_DIRECT.
- move ts config into a better function.
- move the STMP reset out of the ADC init.
* vf610_adc
- case label indenting fix.
This patch moves the STMP reset out of ADC init function so as to remove
the possiblity of an error return which will be necessary for PM ops support
patches to follow.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch moves the touchscreen type configuration into
a more suitable function. Btw this simplifies PM ops later.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Set INPUT_PROP_DIRECT to indicate that it is a touchscreen on the
device to help userspace classify it.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Using this requires software triggers like CONFIG_IIO_HRTIMER_TRIGGER.
The device can be configured to do internal periodic sampling but does not
offer some sort of interrupt on data ready. Interrupts can only trigger when
values get out of a specific range.
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the error reported by checkpatch.pl:
ERROR: space prohibited before that ',' (ctx:WxW)
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the errors reported by checkpatch.pl:
ERROR: space prohibited before that ',' (ctx:WxW)
ERROR: code indent should use tabs where possible
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the error reported by checkpatch.pl:
ERROR: space prohibited before that ',' (ctx:WxW)
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the error reported by checkpatch.pl:
ERROR: switch and case should be at the same indent
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This resolves a lot of merge issues with PAGE_CACHE_* changes, and an
iio driver merge issue.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This lot are either dependent on patches from the merge window or just came
in recently enough that they ended up in this tree.
* core
- The watermark for the buffers was given a value that meant that it was
impossible to actually set the watermark to anything sensible.
* at91_adc
- Fix a build config dependency on HAS_IOMEM
* bmc150
- Fix wrong output on big endian systems
* bmg160
- Fix wrong output on big endian systems
- Fix an issue in which the regmap return value was stored to the buffer
rather than the value actually being read in a bulk read.
* inv_mpu6050
- Fix an indirect build config dependency on HAS_IOMEM
* max30100
- Fix an error in fifo check condition that leads to a double read of the
final reading.
* st_magn
- Make sure ST_MAGN_TRIGGER_SET_STATE is always defined to avoid a build
error for relatively obscure config combinations.
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Merge tag 'iio-fixes-for-4.6b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for the 4.6 cycle.
This lot are either dependent on patches from the merge window or just came
in recently enough that they ended up in this tree.
* core
- The watermark for the buffers was given a value that meant that it was
impossible to actually set the watermark to anything sensible.
* at91_adc
- Fix a build config dependency on HAS_IOMEM
* bmc150
- Fix wrong output on big endian systems
* bmg160
- Fix wrong output on big endian systems
- Fix an issue in which the regmap return value was stored to the buffer
rather than the value actually being read in a bulk read.
* inv_mpu6050
- Fix an indirect build config dependency on HAS_IOMEM
* max30100
- Fix an error in fifo check condition that leads to a double read of the
final reading.
* st_magn
- Make sure ST_MAGN_TRIGGER_SET_STATE is always defined to avoid a build
error for relatively obscure config combinations.
Again I've ended up with two early fix sets, depending on whether they are
dependent on elements of the merge window or simply came in after I had
patches with that dependency already, vs older fixes that were just too
late for the last cycle. This first set is for the older ones.
- max1353
* Add a missing adc to max1363_id - the driver has supported the
max11644-11647 for a while, but as they weren't in the id table there
was no way of actually initializing it.
* Fix a wrong reference voltage for the above models. Given you couldn't
initialize the driver for these parts without patching, no one noticed
that the reference voltage used in computing the scaling was wrong.
- apds9960
* The fifo last enelement was read twice (and hence pushed out twice) due
to a small logic bug.
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Merge tag 'iio-fixes-for-4.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into usb-linus
Jonathan writes:
First round of IIO fixes for the 4.6 cycle.
Again I've ended up with two early fix sets, depending on whether they are
dependent on elements of the merge window or simply came in after I had
patches with that dependency already, vs older fixes that were just too
late for the last cycle. This first set is for the older ones.
- max1353
* Add a missing adc to max1363_id - the driver has supported the
max11644-11647 for a while, but as they weren't in the id table there
was no way of actually initializing it.
* Fix a wrong reference voltage for the above models. Given you couldn't
initialize the driver for these parts without patching, no one noticed
that the reference voltage used in computing the scaling was wrong.
- apds9960
* The fifo last enelement was read twice (and hence pushed out twice) due
to a small logic bug.
New core support
* UV light modifier (for intensity)
* UV light index channel type.
New device support
* hp206c barometer and altimeter
- new driver.
* mcp4131 potentiometer
- new driver supporting lots of parts from Microchip.
* mma8452
- FXLS8471Q support
- NXP LPC18XX SOC ADC
- new driver.
- NXP LPC18XX SOC DAC
- new driver.
- rockchip_saradc
- support rk3399
* st accel
- h3lis331dl support
Staging driver removals
* adis16204
- obsolete part making it hard to get parts to test the driver in order
to clean it up.
* adis16220
- obsolete part making it hard to get the parts test the driver in order
to clean it up.
Features
* core
- convenience functions to claim / release direct access to the device.
Makes more consistent handling of this corner easier. Used in ad7192 driver.
* ak8975
- power regulator support.
* at91-sama5d2
- differential channel support.
* mma8452
- runtime pm support
- drop device specific autosleep and use the runtime pm one instead.
* ms5611
- DT bindings
- oversampling ratio support
Cleanups and minor fixes
* MAINTAINERS
- Peter got married - hence name change!
* Documentation
- Fix a typo in in_proximity_raw description.
- Add some missing docs for iio_buffer_access_funcs.
* Tools
- update iio_event_monitor names to match new stuff.
- make generic_buffer look for triggers ending in -trigger as we let these in
for a number of drivers a long time back and now it is a fairly common
option.
Drivers
* staging wide
- convert bare unsigned usage to unsigned int to comply with coding style.
* non staging wide:
- since boiler plate gpio handling of interrupts has been moved into the
ACPI core we don't need to include gpio/consumer.h in a load of drivers so
drop it.
* ad7606
- fix an endian casting sparse warning.
* ak8975
- fix a possible unitialized warning from gcc.
- drop and unused field left over from earlier cleanups
- fix a missing regulator_disable on exit.
* at91-sama5d2
- typo and indentation
- missing IOMEM dependency.
- cleanup mode register usage by avoidling erasing whole thing when changing
the sampling frequency.
* bmc150
- use the core demux and available_scan_masks to simplify buffer handling
- optimize the transfers in the trigger handler now we have a magic function
to emulate bulk reads (under circumstances met here). This matters with some
rather dumb i2c adapters in particular.
- use a single regmap_conf for all bus types as they were all the same.
* bmg160
- use the core demux and available_scan_masks to simplify the buffer handling
- optimize the transfers in the trigger handler now we have a magic funciton
to emulate bulk rads (under circumstances met here).
- drop gpio interrupt probing from the driver (ACPI) as now handled by the
ACPI core.
* ina2xx-adc
- update the CALIB register when RShunt changes.
- fix scale for VShunt - in reality this error canceled out when used.
* isl29028
- use regmap to retrieve the struct device instead of carrying a second
copy of it around.
* kxcjk-1013
- use core demux
- optimize i2c transfers in the trigger handler.
* mcp4531
- refactor to use a pointer to access model parameters instead of indexing
into the array each time.
* mma8452
- style fixes
- avoid swtiching to active whenever the config changes
- add missin i2c_device_id for mma8451
* mpu6050
- fix possible NULL dereference.
- fix the name / chip_id used when ACPI used (otherwise reports as NULL).
* ms5611
- fix a missing regulator_disable that left the regulator on during removal.
* mxc4005
- drop gpio interrupt handling for ACPI case from driver as the core now
handles this case.
* st-sensors
- note that there are only ever a maximum of 3 axis on current st-sensors
so just allocate a fixed sized buffer big enough for that.
* tpl0102
- change the i2c_check_functionality condition to bring it inline with other
IIO users as EOPNOTSUPP.
* tsl2563
- replace deprecated flush_scheduled_work
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Merge tag 'iio-for-4.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of IIO new device support, features and cleanups for the 4.7 cycle.
New core support
* UV light modifier (for intensity)
* UV light index channel type.
New device support
* hp206c barometer and altimeter
- new driver.
* mcp4131 potentiometer
- new driver supporting lots of parts from Microchip.
* mma8452
- FXLS8471Q support
- NXP LPC18XX SOC ADC
- new driver.
- NXP LPC18XX SOC DAC
- new driver.
- rockchip_saradc
- support rk3399
* st accel
- h3lis331dl support
Staging driver removals
* adis16204
- obsolete part making it hard to get parts to test the driver in order
to clean it up.
* adis16220
- obsolete part making it hard to get the parts test the driver in order
to clean it up.
Features
* core
- convenience functions to claim / release direct access to the device.
Makes more consistent handling of this corner easier. Used in ad7192 driver.
* ak8975
- power regulator support.
* at91-sama5d2
- differential channel support.
* mma8452
- runtime pm support
- drop device specific autosleep and use the runtime pm one instead.
* ms5611
- DT bindings
- oversampling ratio support
Cleanups and minor fixes
* MAINTAINERS
- Peter got married - hence name change!
* Documentation
- Fix a typo in in_proximity_raw description.
- Add some missing docs for iio_buffer_access_funcs.
* Tools
- update iio_event_monitor names to match new stuff.
- make generic_buffer look for triggers ending in -trigger as we let these in
for a number of drivers a long time back and now it is a fairly common
option.
Drivers
* staging wide
- convert bare unsigned usage to unsigned int to comply with coding style.
* non staging wide:
- since boiler plate gpio handling of interrupts has been moved into the
ACPI core we don't need to include gpio/consumer.h in a load of drivers so
drop it.
* ad7606
- fix an endian casting sparse warning.
* ak8975
- fix a possible unitialized warning from gcc.
- drop and unused field left over from earlier cleanups
- fix a missing regulator_disable on exit.
* at91-sama5d2
- typo and indentation
- missing IOMEM dependency.
- cleanup mode register usage by avoidling erasing whole thing when changing
the sampling frequency.
* bmc150
- use the core demux and available_scan_masks to simplify buffer handling
- optimize the transfers in the trigger handler now we have a magic function
to emulate bulk reads (under circumstances met here). This matters with some
rather dumb i2c adapters in particular.
- use a single regmap_conf for all bus types as they were all the same.
* bmg160
- use the core demux and available_scan_masks to simplify the buffer handling
- optimize the transfers in the trigger handler now we have a magic funciton
to emulate bulk rads (under circumstances met here).
- drop gpio interrupt probing from the driver (ACPI) as now handled by the
ACPI core.
* ina2xx-adc
- update the CALIB register when RShunt changes.
- fix scale for VShunt - in reality this error canceled out when used.
* isl29028
- use regmap to retrieve the struct device instead of carrying a second
copy of it around.
* kxcjk-1013
- use core demux
- optimize i2c transfers in the trigger handler.
* mcp4531
- refactor to use a pointer to access model parameters instead of indexing
into the array each time.
* mma8452
- style fixes
- avoid swtiching to active whenever the config changes
- add missin i2c_device_id for mma8451
* mpu6050
- fix possible NULL dereference.
- fix the name / chip_id used when ACPI used (otherwise reports as NULL).
* ms5611
- fix a missing regulator_disable that left the regulator on during removal.
* mxc4005
- drop gpio interrupt handling for ACPI case from driver as the core now
handles this case.
* st-sensors
- note that there are only ever a maximum of 3 axis on current st-sensors
so just allocate a fixed sized buffer big enough for that.
* tpl0102
- change the i2c_check_functionality condition to bring it inline with other
IIO users as EOPNOTSUPP.
* tsl2563
- replace deprecated flush_scheduled_work
The scale would result in uV instead of expected mV.
Mostly cosmetic, since the value of 'Power' was computed OK.
Signed-off-by: Marc Titinger <marc.titinger@baylibre.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add signed differential channels and update the voltage scale for
differential conversions.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Do not erase previous configuration of the mode register when setting
the sampling frequency.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.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>
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>
Sebastian Reichel