Lorenzo Bianconi [Sun, 11 Nov 2018 14:15:35 +0000 (15:15 +0100)]
iio: imu: st_lsm6dsx: add hw FIFO support to i2c controller
Introduce hw FIFO support to lsm6dsx i2c controller.
st_lsm6dsx sensor-hub relies on SLV0 for slave configuration since SLV0
is the only channel that can be used to write into i2c slave devices.
SLV{1,2,3} channels are used to read external data and push them into
the hw FIFO
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Introduce st_lsm6dsx_push_tagged_data routine to push samples
to iio buffers. st_lsm6dsx_push_tagged_data will be reused adding
hw fifo support to st_lsm6dsx i2c embedded controller in order to
improve code readability
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Lorenzo Bianconi [Sun, 11 Nov 2018 14:15:33 +0000 (15:15 +0100)]
iio: imu: st_lsm6dsx: add i2c embedded controller support
i2c controller embedded in lsm6dx series can connect up to four
slave devices using accelerometer sensor as trigger for i2c
read/write operations.
Introduce sensor hub support for lsm6dso sensor. Add register map
for lis2mdl magnetometer sensor.
In order to perform single read/write operations st_lsm6dsx driver
relies on SLV0 channel (hw FIFO is not supported yet)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add st_lsm6dsx_sensor_set_enable routine and remove
st_lsm6dsx_sensor_{enable/disable} ones in order to make the code more
readable and remove unnecessary functions
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add ST_LSM6DSX_ID_EXT{0,1,2} sensor ids as reference for slave devices
connected to st_lsm6dsx i2c controller. Moreover introduce odr dependency
between accel and ext devices since i2c embedded controller relies on the
accelerometer sensor as bus read/write trigger so we need to enable accel
device at odr = max(accel_odr, ext_odr) in order to properly communicate
with i2c slave devices
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Lorenzo Bianconi [Sun, 11 Nov 2018 14:15:29 +0000 (15:15 +0100)]
iio: imu: st_lsm6dsx: reload trimming parameter at bootstrap
Perform a complete device reset at bootstrap reloading trimming parameter
after sw reset is completed. Device sw reset/boot is explained here:
https://www.st.com/resource/en/application_note/dm00517282.pdf,
section 5.7
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add st_lsm6dsx_update_bits_locked, st_lsm6dsx_read_locked and
st_lsm6dsx_write_locked utility routines in order to guarantee
the bus access is atomic respect to reg page configuration.
This is a preliminary patch to add i2c sensor hub support since
i2c master registers are accessed through a reg page multiplexer
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Freeman Liu [Fri, 9 Nov 2018 03:25:31 +0000 (11:25 +0800)]
iio: adc: sc27xx: Add ADC data conversion timeout
Sometimes the ADC controller met some problems, and it will not complete
the data conversion, that will can not wake up the read process any more
to block users. So we should add one maximum conversion time to avoid
this issue.
Signed-off-by: Freeman Liu <freeman.liu@unisoc.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Renato Lui Geh [Mon, 5 Nov 2018 19:16:14 +0000 (17:16 -0200)]
staging: iio: ad7780: remove unnecessary stashed voltage value
This patch removes the unnecessary field int_vref_mv in ad7780_state
referring to the device's voltage.
Signed-off-by: Renato Lui Geh <renatogeh@gmail.com> Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Renato Lui Geh [Mon, 5 Nov 2018 19:14:58 +0000 (17:14 -0200)]
staging: iio: ad7780: update voltage on read
The ad7780 driver previously did not read the correct device output, as
it read an outdated value set at initialization. It now updates its
voltage on read.
Signed-off-by: Renato Lui Geh <renatogeh@gmail.com> Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Song Qiang [Thu, 8 Nov 2018 09:27:49 +0000 (17:27 +0800)]
iio: magnetometer: Add driver support for PNI RM3100
PNI RM3100 is a high resolution, large signal immunity magnetometer,
composed of 3 single sensors and a processing chip with a MagI2C
interface.
Following functions are available:
- Single-shot measurement from
/sys/bus/iio/devices/iio:deviceX/in_magn_{axis}_raw
- Triggerd buffer measurement.
- DRDY pin for data ready trigger.
- Both i2c and spi interface are supported.
- Both interrupt and polling measurement is supported, depends on if
the 'interrupts' in DT is declared.
Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Song Qiang [Thu, 8 Nov 2018 09:27:48 +0000 (17:27 +0800)]
iio: magnetometer: Add DT support for PNI RM3100
Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Song Qiang [Thu, 8 Nov 2018 09:27:47 +0000 (17:27 +0800)]
dt-bindings: Add PNI to the vendor prefixes
Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
staging: iio: ad7780: generates pattern_mask from PAT bits
Previously, all pattern_masks and patterns in the chip_info table were
hardcoded. Now they are generated using the PAT macros, as described in
the datasheets.
Signed-off-by: Giuliano Belinassi <giuliano.belinassi@usp.br> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: adc: meson-saradc: add support for the chip's temperature sensor
Channel 6 of the SAR ADC can be switched between two inputs:
SAR_ADC_CH6 input (an actual pad on the SoC) and the signal from the
temperature sensor inside the SoC.
To get usable results from the temperature sensor we need to read the
corresponding calibration data from the eFuse and pass it to the SAR ADC
registers. If the temperature sensor is not calibrated (the eFuse data
contains a bit for this) then the driver will only register the
iio_chan_spec's for voltage measurements.
This only enables the temperature sensor for the Meson8 SoC. Meson8b and
Meson8m2 SoCs can be supported in the future as well but we first need
a way to pass the fifth TSC (temperature sensor coefficient) bit to the
HHI register area (apart from that the infrastructure as already
implemented for Meson8 can be used). On the 64-bit SoCs (GXBB, GXL and
GXM) the temperature sensor inside SAR ADC is firmware-controlled (by
BL30, we can simply use the SCPI hwmon driver to get the chip
temperature).
To keep the devicetree interface backwards compatible we simply skip the
temperature sensor initialization if no eFuse nvmem cell is passed via
devicetree.
The public documentation for the SAR ADC IP block does not explain how
to use the registers to read the temperature. The logic from this patch
is based on reading and understanding Amlogic's GPL kernel sources.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
dt-bindings: iio: adc: meson-saradc: add temperature sensor support
The 32-bit Meson8 SoC can use the SAR ADC to read the chip temperature.
This requires setting the correct TSC (temperature sensor coefficient),
which is programmed into the eFuse during the manufacturing process.
Meson8b and Meson8m2 are not supported yet because they have a 5-bit TSC
and only the first four bits are stored inside the SAR ADC registers.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matheus Tavares [Sat, 3 Nov 2018 22:49:48 +0000 (19:49 -0300)]
staging:iio:ad2s90: Check channel type at read_raw
This patch adds a channel type check at the beginning of the
ad2s90_read_raw function. Since ad2s90 has only one channel, it just
checks if the given channel is the expected one and if not, return
-EINVAL.
Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matheus Tavares [Sat, 3 Nov 2018 22:49:46 +0000 (19:49 -0300)]
staging:iio:ad2s90: Move device registration to the end of probe
Previously, devm_iio_device_register was being called before the
spi_setup call and the spi_device's max_speed_hz and mode assignments.
This could lead to a race condition since the driver was still being
set up after it was already made ready to use. To fix it, this patch
moves the device registration to the end of ad2s90_probe.
Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matheus Tavares [Sat, 3 Nov 2018 22:49:44 +0000 (19:49 -0300)]
staging:iio:ad2s90: Make probe handle spi_setup failure
Previously, ad2s90_probe ignored the return code from spi_setup, not
handling its possible failure. This patch makes ad2s90_probe check if
the code is an error code and, if so, do the following:
- Call dev_err with an appropriate error message.
- Return the spi_setup's error code.
Note: The 'return ret' statement could be out of the 'if' block, but
this whole block will be moved up in the function in the patch:
'staging:iio:ad2s90: Move device registration to the end of probe'.
Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Matheus Tavares [Sat, 3 Nov 2018 22:49:43 +0000 (19:49 -0300)]
staging:iio:ad2s90: Make read_raw return spi_read's error code
Previously, when spi_read returned an error code inside ad2s90_read_raw,
the code was ignored and IIO_VAL_INT was returned. This patch makes the
function return the error code returned by spi_read when it fails.
Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Renato Lui Geh [Thu, 1 Nov 2018 14:43:02 +0000 (11:43 -0300)]
staging: iio: ad7780: fix offset read value
Variable val subtracted an uninitialized value on IIO_CHAN_INFO_OFFSET.
This was fixed by assigning the correct value instead.
Signed-off-by: Renato Lui Geh <renatogeh@gmail.com> Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Nishad Kamdar [Wed, 31 Oct 2018 16:00:36 +0000 (21:30 +0530)]
staging: iio: ad2s1210: Add device tree table.
Add device tree table for matching vendor ID.
Note that as the driver is still heavily in flux and there are some
non obvious aspects to a comprehensive binding, that binding will
be submitted at a later date (before leaving staging!)
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Martin Kelly [Fri, 26 Oct 2018 02:38:12 +0000 (19:38 -0700)]
dt-bindings: iio: magn: add LSM9DS1 bindings
Add DT binding documentation for the LSM9DS1 magnetometer.
Signed-off-by: Martin Kelly <martin@martingkelly.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Martin Kelly [Fri, 26 Oct 2018 02:38:11 +0000 (19:38 -0700)]
iio:magnetometer: st_magn: add BDU settings
LIS3MDL and LSM9DS1 are missing BDU settings in their register maps, so add
them. I don't have a LIS3MDL sensor to test, but this works correctly on
the LSM9DS1, which has the same register map.
Signed-off-by: Martin Kelly <martin@martingkelly.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Martin Kelly [Fri, 26 Oct 2018 02:38:10 +0000 (19:38 -0700)]
iio:magnetometer: st_magn: add LSM9DS1 support
Update the sensor settings to support the LSM9DS1 sensor. Although the
LSM9DS1 accelerometer and gyroscope are coupled together to use the same
FIFO, the magnetometer is separate and can be cleanly supported without
refactoring the existing driver.
Signed-off-by: Martin Kelly <martin@martingkelly.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dan O'Donovan [Thu, 25 Oct 2018 15:35:42 +0000 (16:35 +0100)]
iio: adc128s052: use SPDX-License-Identifier
This updates the ti-adc128s052.c file to use SPDX-License-Identifier
instead of more verbose license text.
Signed-off-by: Dan O'Donovan <dan@emutex.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Nicola Lunghi [Thu, 25 Oct 2018 15:35:41 +0000 (16:35 +0100)]
iio: adc128s052: add ACPI _HID AANT1280
ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP
Squared board.
Add it to the driver.
Signed-off-by: Nicola Lunghi <nicola.lunghi@emutex.com>
[javier@emutex.com: fix up commit message and one checkpatch warning] Signed-off-by: Javier Arteaga <javier@emutex.com> Signed-off-by: Dan O'Donovan <dan@emutex.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Javier Arteaga [Thu, 25 Oct 2018 15:35:40 +0000 (16:35 +0100)]
iio: adc128s052: Add pin-compatible IDs
The datasheets for ADC122S021 and ADC124S021 list two more
pin-compatible alternatives for each device.
Add their IDs as compatible strings.
Suggested-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Javier Arteaga <javier@emutex.com> Signed-off-by: Dan O'Donovan <dan@emutex.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Nishad Kamdar [Wed, 17 Oct 2018 14:47:20 +0000 (20:17 +0530)]
staging: iio: ad7816: Switch to the gpio descriptor interface
Use the gpiod interface for rdwr_pin, convert_pin and busy_pin
instead of the deprecated old non-descriptor interface.
Note that Phil Reid identified that some of this code would never
have worked. A follow up patch can fix that as this is just
a direct change of interface.
Colin Ian King [Tue, 16 Oct 2018 16:14:18 +0000 (17:14 +0100)]
iio: adc: ina2xx: add in early -EINVAL returns in case statements
Static analysis with CoverityScan is throwing warnings that specific
case statements are missing breaks. Rather than adding breaks, add
return -EINVAL to the specific case statements to clarify the
error return paths. Fix also saves 50 bytes.
Before:
text data bss dec hex filename
21418 4936 128 26482 6772 drivers/iio/adc/ina2xx-adc.o
After:
dec hex filename
21370 4936 128 26434 6742 drivers/iio/adc/ina2xx-adc.o
(gcc 8.2, x86-64)
Detected by CoverityScan, CID#1462408 ("Missing break in switch")
Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Marcelo Schmitt [Thu, 18 Oct 2018 01:31:47 +0000 (22:31 -0300)]
Staging:iio:adc:ad7606: Match parenthesis alignment
Change close parenthesis alignment to match respective open parenthesis at
iio/drivers/staging/iio/adc/ad7606.c line 379.
This makes the file more compliant with the preferred coding style for the
linux kernel.
Signed-of-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Slawomir Stepien [Sat, 20 Oct 2018 21:04:11 +0000 (23:04 +0200)]
staging: iio: adc: ad7280a: handle error from __ad7280_read32()
Inside __ad7280_read32(), the spi_sync_transfer() can fail with negative
error code. This change will ensure that this error is being passed up
in the call stack, so it can be handled.
Signed-off-by: Slawomir Stepien <sst@poczta.fm> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: dpot-dac: mark expected switch fall-through with text GCC expects.
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Notice that in this particular case, I replaced "...and fall through."
with the specific string "fall through", which is what GCC is
expecting to find thus supressing this false positive.
As Peter has observed this breaks the nice English flow, which is
less than ideal, but short of teaching GCC to read English, there
isn't a lot that we can do about it.
Addresses-Coverity-ID: 1462408 ("Missing break in switch") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The charme of devm_* functions is that you don't need to care about them
in the error path. In this case it is valid to just return NULL which makes
the device fail to probe and then the two gpios and the allocated memory
are freed automatically by the driver core.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Nishad Kamdar [Mon, 1 Oct 2018 14:46:05 +0000 (20:16 +0530)]
staging: mt7621-mmc: Remove single statement macro msdc_irq_restore()
This patch removes the macro msdc_irq_restore() and replaces its
usage with call to the function called in the macro definition.
Issue found by checkpatch.