Add device tree support for LPS22HB, LPS25H, LPS331AP, LPS001WP
pressure sensors
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add device tree support for LIS3MDL and LSM303AGR magnetometer sensors
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Don't inflate the kernel size with data that isn't used. The conditional
declaration also fixes the following warning when building with clang:
drivers/iio/magnetometer/ak8975.c:704:36: error: variable 'ak_acpi_match'
is not needed and will not be emitted
[-Werror,-Wunneeded-internal-declaration]
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add missing hooks in the LTC2497 IIO driver to allow hwmon mapping.
Signed-off-by: Gaurav Gupta <gauragup@cisco.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The array stm32h7_adc_ckmodes_spec does not need to be in global scope, so
make it static.
Cleans up sparse warning:
"symbol 'stm32h7_adc_ckmodes_spec' was not declared. Should it be static?"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Some part of the configuration are not touched after the probe
and if something goes wrong on writing the initial one,
the chip will misbehave.
Adding an error checking ensures that the inital configuration will
be written correctly. Moreover ensures that a sensible configuration
will be saved in driver data and used subsequently as intended.
Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Reported-by: Maarten Brock <m.brock@vanmierlo.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Initial channel should be the first available channel on
all configurations, so changing to channel 0 available on
all supported chips.
Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Reported-by: Maarten Brock <m.brock@vanmierlo.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Open drain should work fine with rising or high level IRQs,
this code was due to some misunderstanding on my part.
Reported-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add a link to the TCS3472 datasheet in the AMS's website.
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch supports auxadc suspend/resume flow.
Disable auxadc clk and power in suspend function.
Enable axuadc clk and power in resume function.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add open drain support in order to share requested IRQ line between
st_lsm6dsx device and other peripherals
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add of_match_table for Measurement-Specialties htu21 temperature & humidity sensor and humidity part of MS8607 sensor
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Added support for suspend/resume functionality for the ADC IP
in sama5d2 SoC.
In order to enter Suspend to ram mode (backup + self refresh mode for
memory), in which the ADC IP is no longer powered, we need to reset the
pins to default state, for the scenario when they are also used for I2C
bus to communicate with the PMIC.
On resume, we need to reconfigure the ADC IP registers and reconfigure the
trigger registers in the case when the suspend procedure is done while
sysfs has the buffer and trigger enabled.
In the case the suspend happens exactly during a software triggered
conversion, the request will time out, because we reset and power down
the ADC.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
In order to add proper device tree support give a more general name
to of_device_id table
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Move st_sensors_of_i2c_probe() in st_sensors_core and rename it in
st_sensors_of_name_probe(). That change is necessary to add device-tree
support in spi code otherwise the rest of the autodetection will fail
since spi->modalias (and indio_dev->name) will be set using compatible
string value that differs from standard sensor name
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Enable multiread by default for LIS3MDL since using I2C interface
the subaddr Msb is used to automatically increase the slave address
during multiple data read/write. In the same way, using SPI interface,
bit 1 in register address is used to enable auto-increment of the slave
address in multiple read/write.
Fixes: 872e79add7 (iio:magn: Add STMicroelectronics magn driver)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The integration time is controlled by the ATIME register only. However,
this register is written by i2c_smbus_write_word_data() in write_raw().
We actually don't need to write a subsequent register. So just use
i2c_smbus_write_byte_data() instead.
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
While the INA226 has a conversion ready flag (CVRF) in the R/W Mask/Enable
register with read-to-clear semantics, the corresponding bit of the INA219
(CNVR) is part of the bus voltage register. The flag is cleared by reading
the power register.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Added support for the external hardware trigger on pin ADTRG,
integrated the three possible edges into the driver
and created buffer management for data retrieval
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
To keep IMX7D_ADC text consistent with other iio/adc entries, add
the vendor name to the driver menu text.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add of_match_table and point it to a list of compatible device tree
device id's.
Signed-off-by: Michael Stecklein <m-stecklein@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Include datasheet links, add i2c_device_id entries, and update
kconfig help for compatible HDC10xx devices: HDC1000, HDC1008,
HDC1010, HDC1050, and HDC1080.
Signed-off-by: Michael Stecklein <m-stecklein@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add proper support for L3GD20H gyroscope sensor. In particular:
- use L3GD20H as device name instead of L3GD20
- fix available full scales
- fix available sample frequencies
Note that the original patch listed first below introduced broken support for
this part. The second patch drops the support as it didn't work.
This new patch brings in working support.
Fixes: 9444a300c2 (IIO: Add support for L3GD20H gyroscope)
Fixes: a065771641 ("iio:gyro: bug on L3GD20H gyroscope support")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for the BOSC0200 ACPI device id used on some x86 tablets.
note driver_data is not set to a specific model, driver_data is not
used anyways (instead detection is done on the chip_id reg) and the
2 tablets with a BOSC0200 ACPI device id I've have 2 different chips,
one has a BMA250E, the other a BMA222E.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
A few reverts here. One was a general failure to notice a device was already
supported by another driver. The second is due to a review comment pointing
out that the original patch was a bad idea and would break existing systems.
Reverts
* bma180
- Revert addition of support for the BMA250E it is already supported by
the bmc150-accel and better supported at that. Oops.
* hi8435
- The fix for cleanup of the reset gpio stuff isn't a good way to go. It
breaks systems where an inverting level convertor is used. The right fix
is to make the original devicetree correct - even if it involves patching
the devicetree in kernel.
New Device Support
* stm32-adc
- STM32H7 support and bindings.
Features
* core
- add a hardware triggered operating mode for systems in which the actual
trigger is never seen by the kernel. This is typically only used when
a device 'can' use other triggers, but if a particular magic one is
enabled the interrupt is effectively handled in hardware and we never see
it.
* st-lsm6dsx
- support active low interrupts.
* stm32-adc
- Make the core adc clock optional as not all hardware supported requires it.
- Make the bus clock optional in the per instance driver as it may be shared
by all instances of the ADC and is handled by the core.
- Rework to have a data structure representing the device type specific
elements.
* stm32-trigger (and counter)
- Use the INDIO_HARDWARE_TRIGGERED_MODE where appropriate.
- Add an attribute to configure device modes for quadrature counting etc.
Clean ups and minor fixes
* IIO core.
- use __sysfs_match_string() helper rather than open coding the same.
* ad7791
- use sysfs_match_string() helper rather than open coding the same.
* aspeed-adc
- handle return value of clk_prepare_enable
* cpcap
- Fix default register values and ensure the battery thermistor is enabled
correctly.
- Fix the reported die temperature where we can - docs are lacking.
- Remove the hung interrupt quirk as no longer happens due to fix in the
mfd driver.
* hi8435
- Remove &s from hi8435_info definition as unneeded and inconsistent.
* hid-sensor-trgger
- Add kconfig depends on IIO_BUFFER (fixes patch in previous series)
* ina2xx
- Make the use of iio_info_mask* elements consistent for all channels.
This doesn't have any visible effect, but acts as clear documentation of
which channels various resulting attributes apply to.
* lpc32xx
- handle the return value of clk_prepare_enable.
* meson-saradc
- NULL instead of 0 for pointer.
* mma9551
- use NULL for GPIO connection ID to aid implementation fo ACPI support.
Here the connection ID doesn't actually tell us anything and it is much
easier to deal with the driver if it's not there.
* mpu6050
- Fix lock issues through use of a local mux.
- Replace sprintf with scnprintf as appropriate.
- Check whoami against all known values. This allows for a small number of
boards where we are really fishing for the part not being present at all.
It is unfortunately common to have undescribed changes to use newer chips.
We paper over this but just emitting a warning for those cases as long as
we know about.
* mxs-lradc
- Fix some non static warnings.
* rcar-adc
- Part of making the naming for this part consistent across the kernel.
* st_accel
- drop some spi_device_id entries for variants with no SPI support
* st_magn
- drop some spi_device_id entries for variants with no SPI support.
* sx9500
- Use devm_gpiod_get instead of indexed value with an index of 0 on all
occasions.
* twl4030
- Drop unused twl4030_get_madc_conversion as callers removed now throughout
kernel.
- Unexport twl4030_madc_conversion() as no used only within this driver.
- Drop twl4030_madc_user_params as not used now.
- Drop twl4030_madc_request.func_cb as not used now.
- Fold the twl4030-madc.h header into the driver as no longer used anywhere
else in the kernel.
* xilinx
- Handle the return value of clk_prepare_enable
-----BEGIN PGP SIGNATURE-----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=2fJI
-----END PGP SIGNATURE-----
Merge tag 'iio-for-4.13b' 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 4.13 cycle.
A few reverts here. One was a general failure to notice a device was already
supported by another driver. The second is due to a review comment pointing
out that the original patch was a bad idea and would break existing systems.
Reverts
* bma180
- Revert addition of support for the BMA250E it is already supported by
the bmc150-accel and better supported at that. Oops.
* hi8435
- The fix for cleanup of the reset gpio stuff isn't a good way to go. It
breaks systems where an inverting level convertor is used. The right fix
is to make the original devicetree correct - even if it involves patching
the devicetree in kernel.
New Device Support
* stm32-adc
- STM32H7 support and bindings.
Features
* core
- add a hardware triggered operating mode for systems in which the actual
trigger is never seen by the kernel. This is typically only used when
a device 'can' use other triggers, but if a particular magic one is
enabled the interrupt is effectively handled in hardware and we never see
it.
* st-lsm6dsx
- support active low interrupts.
* stm32-adc
- Make the core adc clock optional as not all hardware supported requires it.
- Make the bus clock optional in the per instance driver as it may be shared
by all instances of the ADC and is handled by the core.
- Rework to have a data structure representing the device type specific
elements.
* stm32-trigger (and counter)
- Use the INDIO_HARDWARE_TRIGGERED_MODE where appropriate.
- Add an attribute to configure device modes for quadrature counting etc.
Clean ups and minor fixes
* IIO core.
- use __sysfs_match_string() helper rather than open coding the same.
* ad7791
- use sysfs_match_string() helper rather than open coding the same.
* aspeed-adc
- handle return value of clk_prepare_enable
* cpcap
- Fix default register values and ensure the battery thermistor is enabled
correctly.
- Fix the reported die temperature where we can - docs are lacking.
- Remove the hung interrupt quirk as no longer happens due to fix in the
mfd driver.
* hi8435
- Remove &s from hi8435_info definition as unneeded and inconsistent.
* hid-sensor-trgger
- Add kconfig depends on IIO_BUFFER (fixes patch in previous series)
* ina2xx
- Make the use of iio_info_mask* elements consistent for all channels.
This doesn't have any visible effect, but acts as clear documentation of
which channels various resulting attributes apply to.
* lpc32xx
- handle the return value of clk_prepare_enable.
* meson-saradc
- NULL instead of 0 for pointer.
* mma9551
- use NULL for GPIO connection ID to aid implementation fo ACPI support.
Here the connection ID doesn't actually tell us anything and it is much
easier to deal with the driver if it's not there.
* mpu6050
- Fix lock issues through use of a local mux.
- Replace sprintf with scnprintf as appropriate.
- Check whoami against all known values. This allows for a small number of
boards where we are really fishing for the part not being present at all.
It is unfortunately common to have undescribed changes to use newer chips.
We paper over this but just emitting a warning for those cases as long as
we know about.
* mxs-lradc
- Fix some non static warnings.
* rcar-adc
- Part of making the naming for this part consistent across the kernel.
* st_accel
- drop some spi_device_id entries for variants with no SPI support
* st_magn
- drop some spi_device_id entries for variants with no SPI support.
* sx9500
- Use devm_gpiod_get instead of indexed value with an index of 0 on all
occasions.
* twl4030
- Drop unused twl4030_get_madc_conversion as callers removed now throughout
kernel.
- Unexport twl4030_madc_conversion() as no used only within this driver.
- Drop twl4030_madc_user_params as not used now.
- Drop twl4030_madc_request.func_cb as not used now.
- Fold the twl4030-madc.h header into the driver as no longer used anywhere
else in the kernel.
* xilinx
- Handle the return value of clk_prepare_enable
SPI bus is never generating error during transfer, so to check if
a chip is correctly connected on a SPI bus we enforce whoami check
to be correct. In this way we can assure SPI probe is failing if
there is no chip connected.
Note that this is really papering over boards that claim the device
is there when it isn't. Not a bad thing to cope with, but not
necessarily stable material.
Fixes: cec0154556 ("iio: inv_mpu6050: Check WHO_AM_I register on probe")
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Building a kernel with my configuration failed with:
> drivers/built-in.o: In function `hid_sensor_setup_batch_mode': staging/drivers/iio/common/hid-sensors/hid-sensor-trigger.c:104: undefined reference to `iio_buffer_set_attrs'
which is fixed by this patch.
Signed-off-by: Alexander Wuerstlein <arw@arw.name>
Fixes: 138bc7969c ("iio: hid-sensor-hub: Implement batch mode")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add buffer_impl.h as buffer.h was split into interface for using and
for internals. Without this industrialio-buffer-dmaengine.c fails
to compile.
Fixes:
commit 33dd94cb97 ("iio:buffer.h - split
into buffer.h and buffer_impl.h")
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add buffer_impl.h as buffer.h was split into interface for using and
for internals. Without this industrialio-buffer-dma.c fails
to compile.
Fixes:
commit 33dd94cb97 ("iio:buffer.h - split
into buffer.h and buffer_impl.h")
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
include/linux/i2c is not for client devices. Move the header file to a
more appropriate location.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
While using GPIO library API we might get into troubles in the future,
because we can't rely on label name in the driver since vendor firmware
might provide any GPIO pin there, e.g. "reset", and even mark it in _DSD
(in which case the request will fail).
To avoid inconsistency and potential issues we have two options:
a) generate GPIO ACPI mapping table and supply it via
acpi_dev_add_driver_gpios(), or
b) just pass NULL as connection ID.
The b) approach is much simpler and would work since the driver relies
on GPIO indices only. Moreover, the _CRS fallback mechanism, when
requesting GPIO, is going to be stricter, and supplying non-NULL
connection ID when neither _DSD, nor GPIO ACPI mapping is present, will
make request fail.
See
https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/commit/?h=for-next&id=ed7fcf1ed5ea4ea01243995ae085757a77cf0f3e for more background.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add validate function to be use to use the correct trigger.
Add an attribute to configure device mode like for quadrature and
enable modes
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Devices, like stm32 timer, could be triggered by hardware events which
are not buffer or software events. However it could be necessary to
validate the triggers like it is done for buffer or event triggered modes.
This patch add a new INDIO_HARDWARE_TRIGGERED operating mode for this
kind of devices and allow this mode to register trigger consumer.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.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>
Reviewed-by: Rick Altherr <raltherr@google.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This reverts commit f1320b0951.
The BMA250E is already handled by the bmc150-accel-i2c driver, which
supports the "E" variants of the BMA??? accelerometers better then the
bma180 driver.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This reverts commit 5333e88661.
The BMA250E is already handled by the bmc150-accel-i2c driver, which
supports the "E" variants of the BMA??? accelerometers better then the
bma180 driver.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Remove LSM303DLHC, LSM303DLM from st_magn_id_table since LSM303DL series
does not support spi interface
Fixes: 872e79add7 (iio: magn: Add STMicroelectronics magn driver)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Remove LSM303DL, LSM303DLM, LSM303DLH, LSM303DLHC from st_accel_id_table
since LSM303DL series does not support spi interface
Fixes: d62511689d (iio: accel: Add STMicroelectronics accel driver)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There are several locks issues when using buffer and direct polling
data at the same time. Use our own mutex for managing locking and
block simultaneous use of buffer and direct polling by using
iio_device_{claim/release}_direct_mode. This makes chip_config
enable bit obsolete, so delete it.
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for active low interrupts (IRQF_TRIGGER_LOW and
IRQF_TRIGGER_FALLING). Configure the device as active high or low
according to the requested irq line.
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Use sysfs_match_string() helper instead of open coded variant.
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Use __sysfs_match_string() helper instead of open coded variant.
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Since index is always 0 replace devm_gpiod_get_index() by devm_gpiod_get().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
twl4030-madc.h is no longer used by anything outside of
the iio driver, so it can be merged into 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>
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>
When a multiplexer changes how an iio device behaves (for example
by feeding different signals to an ADC), this driver can be used
to create one virtual iio channel for each multiplexer state.
Depends on the generic multiplexer subsystem.
Cache any ext_info values from the parent iio channel, creating a private
copy of the ext_info attributes for each multiplexer state/channel.
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Extend the inkern api with functions for reading and writing ext_info
of iio channels.
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In case of error, the function devm_ioremap() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test. Also add NULL test for iores.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
INA226/230/231 has integration times per voltage channel and common
averaging setting for both channels, while the INA219/220 only has a
combined integration time/averaging setting per channel.
Only expose the averaging attribute for the INA226, and expose the correct
integration times for the INA219.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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>
Starting from MPU6500, accelerometer dlpf is set in a separate
register named ACCEL_CONFIG_2.
Add this new register in the map and set it for the corresponding
chips.
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Flags for shared channel attributes should be set on all channels of a
channel set. I.e. SAMP_FREQUENCY and OVERSAMPLING_RATIO are set on the
in_voltage{0,1} channels, thus should be set on in_power, in_current.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
C syntax allows apersands when initializing structures fields with
function pointers, but in Linux sources ampersands are normally not used
in thix context.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This is no longer needed as the real problem was interrupt flags
not getting passed properly from device tree to the cpcap-core.c
mfd driver. This got fixed with commit ac89473213 ("mfd: cpcap:
Fix interrupt to use level interrupt") So let's remove ADC
interrupt specific the quirk.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
It seems that "MC13783 Power Management and Audio Ciruit User's Guide"
MC1378UG.pdf documents several similar components as in the CPCAP PMIC.
Chapter "9.5.5 Die Temperature and UID" says that the die temperature
value is 282 at 25C with LSB of -1.14C. Converting CPCAP PMIC channel3
values with following seems to produce values that make sense for a
PMIC die:
temperature = 25000 + ((regval - 282) * 114)
As we don't have any other documentation, let's assume the die
temperature is unconfigured in the Motorola mapphone Linux kernel
and the current temperature conversion table should be only used
for the battery thermistor and not for the die temperature.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Looking at the register dumps from Android kernel on droid 4, I noticed
the values with the mainline kernel don't match. Let's fix this by
initializing the ADC registers to what Android does.
For getting correct values from the battery thermistor, we need to
toggle the CPCAP_BIT_THERMBIAS_EN when measuring battery temperature
to get correct battery temperatures. And looks like we also need to
wait a little bit before reading the battery temperature as otherwise
the results are inaccurate.
Cc: Marcel Partap <mpartap@gmx.net>
Cc: Michael Scott <michael.scott@linaro.org>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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.
-----BEGIN PGP SIGNATURE-----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=XLVY
-----END PGP SIGNATURE-----
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.
-----BEGIN PGP SIGNATURE-----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=luks
-----END PGP SIGNATURE-----
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>
Get rid of #ifdef CONFIG_PM by adding __maybe_unused macro to
st_lsm6dsx_suspend and st_lsm6dsx_resume function declarations
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Some x86 tablets use the BMA250E accelerometer, add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The BMA250E adds a new fifo mode and is fully backwards compatible
with the BMA250, but with a different chip-id.
This commit adds support for it by adjusting the chip-id check and
otherwise treating it as a regular BMA250.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Move proximity channel from last to first in structs to avoid confusion
later with buffered triggers. Proximity data output is first in rpr0521
register map.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add sysfs read/write proximity offset feature. Offset is read/write from
sensor registers. Values are proximity raw 10-bit values. After applying
offset value, output values will be (measured_raw - offset_value). Output
values are unsigned so offset value doesn't make output negative.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Just whitespace change, no functional changes.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Changed magic number to sizeof() on value read.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Refactor _set_power_state(), _resume() and _suspend().
Enable measurement only when needed, not in _init(). System can suspend
during measurement and measurement is continued on resume.
Pm turns off measurement when both ps and als measurements are disabled for
2 seconds. During off-time the power save is 20-500mA, typically 180mA.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Set sensor measurement off after probe fail in pm_runtime_set_active() or
iio_device_register(). Without this change sensor measurement stays on
even though probe fails on these calls.
This is maybe rare case, but causes constant power drain without any
benefits when it happens. Power drain is 20-500uA, typically 180uA.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Sensor was marked enabled on each call even if the call was for disabling
sensor.
Signed-off-by: Mikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Acked-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The register mapping for the IIO driver for the Liteon Light and Proximity
sensor LTR501 interrupt mode is interchanged (ALS/PS).
There is a register called INTERRUPT register (address 0x8F)
Bit 0 represents PS measurement trigger.
Bit 1 represents ALS measurement trigger.
This two bit fields are interchanged within the driver.
see datasheet page 24:
http://optoelectronics.liteon.com/upload/download/DS86-2012-0006/S_110_LTR-501ALS-01_PrelimDS_ver1%5B1%5D.pdf
Signed-off-by: Franziska Naepelt <franziska.naepelt@idt.com>
Fixes: 7ac702b314 ("iio: ltr501: Add interrupt support")
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The third argument of devm_request_threaded_irq() is the primary
handler. It is called in hardirq context and checks whether the
interrupt is relevant to the device. If the primary handler returns
IRQ_WAKE_THREAD, the secondary handler (a.k.a. handler thread) is
scheduled to run in process context.
bcm_iproc_adc.c uses the secondary handler as the primary one
and the other way around. So this patch fixes the same, along with
re-naming the secondary handler and primary handler names properly.
Tested on the BCM9583XX iProc SoC based boards.
Fixes: 4324c97ece ("iio: Add driver for Broadcom iproc-static-adc")
Reported-by: Pavel Roskin <plroskin@gmail.com>
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reset GPIO is active low.
Currently driver uses gpiod_set_value(1) to clean reset, which depends
on device tree to contain GPIO_ACTIVE_HIGH - that does not match reality.
This fixes driver to use _raw version of gpiod_set_value() to enforce
active-low semantics despite of what's written in device tree. Allowing
device tree to override that only opens possibility for errors and does
not add any value.
Additionally, use _cansleep version to make things work with i2c-gpio
and other sleeping gpio drivers.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Possible values of sensing_mode are encoded with strings and actual
strings used are not obvious.
Provide a hint by enabling in_voltage_sensing_mode_available attribute.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Currently, driver generates events for channels if new reading differs
from previous one. This "previous value" is initialized to zero, which
results into event if value is constant-one.
Fix that by initializing "previous value" by reading at event enable
time.
This provides reliable sequence for userspace:
- enable event,
- AFTER THAT read current value,
- AFTER THAT each event will correspond to change.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
With current event-only driver, it is not possible for user space
application to know current senses if they don't change since
application starts.
Address that by adding raw access to channels.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following warning when building with clang:
drivers/iio/light/isl29018.c:808:36: error: variable
'isl29018_acpi_match' is not needed and will not be emitted
[-Werror,-Wunneeded-internal-declaration]
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
