Add a new binding for the MT6350 Series (MT6357/8/9) PMIC AUXADC,
providing various ADC channels for both internal temperatures and
voltages, audio accessory detection (hp/mic/hp+mic and buttons,
usually on a 3.5mm jack) other than some basic battery statistics
on boards where the battery is managed by this PMIC.
Also add the necessary dt-binding headers for devicetree consumers.
Nuno Sa [Thu, 6 Jun 2024 07:22:38 +0000 (09:22 +0200)]
iio: temperature: ltc2983: convert to dev_err_probe()
Use dev_err_probe() (and variants) in the probe() path. While at it, made
some simple improvements:
* Explicitly included the err.h and errno.h headers;
* Removed some unnecessary line breaks;
* Removed a redundant 'else';
* Added some missing \n to prink.
Sean Anderson [Thu, 20 Jun 2024 20:48:42 +0000 (16:48 -0400)]
iio: xilinx-ams: Add labels
Label all the channels using names from the reference manual. Some of
the "control" channels are duplicates of other channels. The reference
manual describes it like:
> The AMS register set includes several measurement registers that are
> written to by the PS SYSMON unit using the single-channel mode
> (sequencer off). These voltage measurements are performed using the
> unipolar sampling circuit with a 0 to 3V range and do not have alarms
> or minimum/maximum registers.
So I think these really are measuring the same voltages but in a
different location. In which case, sharing labels makes sense to me.
Jonathan Cameron [Sun, 30 Jun 2024 10:36:58 +0000 (11:36 +0100)]
Merge tag 'spi-devm-optimize' into togreg
spi: add devm_spi_optimize_message() helper
Helper from David Lechner <dlechner@baylibre.com>:
In the IIO subsystem, we are finding that it is common to call
spi_optimize_message() during driver probe since the SPI message
doesn't change for the lifetime of the driver. This patch adds a
devm_spi_optimize_message() helper to simplify this common pattern.
Paul Cercueil [Thu, 20 Jun 2024 12:27:24 +0000 (14:27 +0200)]
iio: buffer-dmaengine: Support new DMABUF based userspace API
Use the functions provided by the buffer-dma core to implement the
DMABUF userspace API in the buffer-dmaengine IIO buffer implementation.
Since we want to be able to transfer an arbitrary number of bytes and
not necesarily the full DMABUF, the associated scatterlist is converted
to an array of DMA addresses + lengths, which is then passed to
dmaengine_prep_slave_dma_array().
Signed-off-by: Paul Cercueil <paul@crapouillou.net> Co-developed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240620122726.41232-6-paul@crapouillou.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Paul Cercueil [Thu, 20 Jun 2024 12:27:23 +0000 (14:27 +0200)]
iio: buffer-dma: Enable support for DMABUFs
Implement iio_dma_buffer_attach_dmabuf(), iio_dma_buffer_detach_dmabuf()
and iio_dma_buffer_transfer_dmabuf(), which can then be used by the IIO
DMA buffer implementations.
Signed-off-by: Paul Cercueil <paul@crapouillou.net> Co-developed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240620122726.41232-5-paul@crapouillou.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Paul Cercueil [Thu, 20 Jun 2024 12:27:22 +0000 (14:27 +0200)]
iio: core: Add new DMABUF interface infrastructure
Add the necessary infrastructure to the IIO core to support a new
optional DMABUF based interface.
With this new interface, DMABUF objects (externally created) can be
attached to a IIO buffer, and subsequently used for data transfer.
A userspace application can then use this interface to share DMABUF
objects between several interfaces, allowing it to transfer data in a
zero-copy fashion, for instance between IIO and the USB stack.
The userspace application can also memory-map the DMABUF objects, and
access the sample data directly. The advantage of doing this vs. the
read() interface is that it avoids an extra copy of the data between the
kernel and userspace. This is particularly userful for high-speed
devices which produce several megabytes or even gigabytes of data per
second.
As part of the interface, 3 new IOCTLs have been added:
IIO_BUFFER_DMABUF_ATTACH_IOCTL(int fd):
Attach the DMABUF object identified by the given file descriptor to the
buffer.
IIO_BUFFER_DMABUF_DETACH_IOCTL(int fd):
Detach the DMABUF object identified by the given file descriptor from
the buffer. Note that closing the IIO buffer's file descriptor will
automatically detach all previously attached DMABUF objects.
IIO_BUFFER_DMABUF_ENQUEUE_IOCTL(struct iio_dmabuf *):
Request a data transfer to/from the given DMABUF object. Its file
descriptor, as well as the transfer size and flags are provided in the
"iio_dmabuf" structure.
These three IOCTLs have to be performed on the IIO buffer's file
descriptor, obtained using the IIO_BUFFER_GET_FD_IOCTL() ioctl.
Signed-off-by: Paul Cercueil <paul@crapouillou.net> Co-developed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240620122726.41232-4-paul@crapouillou.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
David Lechner [Mon, 24 Jun 2024 12:49:36 +0000 (15:49 +0300)]
iio: adc: ad7192: use devm_regulator_get_enable_read_voltage
This makes use of the new devm_regulator_get_enable_read_voltage()
function to reduce boilerplate code.
Error messages have changed slightly since there are now fewer places
where we print an error. The rest of the logic of selecting which
supply to use as the reference voltage remains the same.
Also 1000 is replaced by MILLI in a few places for consistency.
Signed-off-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://patch.msgid.link/20240624124941.113010-2-alisa.roman@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Kaustabh Chakraborty [Tue, 25 Jun 2024 08:27:55 +0000 (13:57 +0530)]
iio: st_sensors: relax WhoAmI check in st_sensors_verify_id()
Hard matching against the WhoAmI values isn't ideal for using devices
which are compatible with existing ones. Instead of raising an error,
issue a warning instead, thus allowing the driver to continue probing.
Guillaume Stols [Fri, 28 Jun 2024 14:48:20 +0000 (14:48 +0000)]
dt-bindings: iio: adc: adi,ad7606: comment and sort the compatible names
AD7606-8 is referred to as AD7606 by Analog Devices. This comment aims
to avoid confusion. Also the compatible names were not sorted by
alphabetical order.
Sean Anderson [Mon, 24 Jun 2024 17:46:00 +0000 (13:46 -0400)]
iio: Add iio_read_channel_label to inkern API
It can be convenient for other in-kernel drivers to reuse IIO channel
labels. Export the iio_read_channel_label function to allow this. The
signature is different depending on where we are calling it from, so
the meat is moved to do_iio_read_channel_label.
Olivier Moysan [Tue, 18 Jun 2024 11:59:12 +0000 (13:59 +0200)]
dt-bindings: iio: stm32: dfsdm: fix dtbs warnings on dfsdm audio port
Fix warnings on DFSDM dtbs check
Unevaluated properties are not allowed ('dfsdm-dai' was unexpected)
'port' does not match any of the regexes: 'pinctrl-[0-9]+'
Fixes: 11183ac07a74 ("dt-bindings: stm32: convert dfsdm to json-schema") Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20240618115912.706912-1-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
David Lechner [Fri, 21 Jun 2024 22:11:52 +0000 (17:11 -0500)]
iio: adc: ltc2309: use devm_regulator_get_enable_read_voltage()
Use devm_regulator_get_enable_read_voltage() to simplify the code.
Error message is changed since there is only one error return now.
LTC2309_INTERNAL_REF_MV macro is added to make the internal reference
voltage value self-documenting.
Nuno Sa [Tue, 18 Jun 2024 13:32:06 +0000 (15:32 +0200)]
iio: imu: adis: add cleanup based lock helpers
Add two new lock helpers that make use of the cleanup guard() and
scoped_guard() macros. Thus, users won't have to worry about unlocking
which is less prone to errors and allows for simpler error paths.
Nuno Sa [Tue, 18 Jun 2024 13:32:04 +0000 (15:32 +0200)]
iio: imu: adis_buffer: split trigger handling
Split trigger handling for devices that have paging and need to
select the correct page to get the data. Although this actually
introduces more LOC, it makes the code and the locking clear. It will
also make the following move to the cleanup magic cleaner.
LIS2DS12 is an accelerometer by STMicroelectronics. It is identifiable by
its WhoAmI value 0x43.
Its register interface is not compatible with existing parts. For example:
- The full-scale values are present in register 0x20, in bits 2 and 3
(mask 0x0c). Most other supported sensors have the register address set
to 0x21, 0x23, 0x24, or 0x25. There is one sensor setting though
(bearing WhoAmI 0x3b) which has it's address set to 0x20, but the mask is
set to 0x20, not 0x0c.
- The full-scale values 2G, 4G, 8G, and 16G correspond to the register
values 0x00, 0x02, 0x03, 0x01 respectively. None of the sensor settings
have the value 0x01 associated with 16G.
João Paulo Gonçalves [Mon, 17 Jun 2024 18:39:05 +0000 (20:39 +0200)]
iio: adc: ti-ads1119: Add driver
The ADS1119 is a precision, 16-bit, analog-to-digital converter (ADC)
that features two differential or four single-ended inputs through a
flexible input multiplexer (MUX), rail-to-rail input
buffers, a programmable gain stage, a voltage reference, and an
oscillator.
Apart from normal single conversion, the driver also supports
continuous conversion mode using a triggered buffer. However, in this
mode only one channel can be scanned at a time.
Datasheet: https://www.ti.com/lit/gpn/ads1119 Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Link: https://patch.msgid.link/20240617183905.4685-1-francesco@dolcini.it Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The current error handling for calls such as devm_clk_get_enabled() in
the adi-axi-dac probe() function means that, if a property such as
'clocks' (for example) is not present in the devicetree when booting a
kernel with the driver enabled, the resulting error message will be
vague, e.g.:
|adi_axi_dac 44a00000.dac: probe with driver adi_axi_dac failed with error -2
Change the devm_clk_get_enabled(), devm_regmap_init_mmio(), and
devm_iio_backend_register() checks to use dev_err_probe() with some
context for easier debugging.
After the change:
|adi_axi_dac 44a00000.dac: error -ENOENT: failed to get clock
|adi_axi_dac 44a00000.dac: probe with driver adi_axi_dac failed with error -2
Suggested-by: Nuno Sa <nuno.sa@analog.com> Tested-by: Angelo Dureghello <adureghello@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Link: https://patch.msgid.link/20240617151820.3337034-1-tgamblin@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dumitru Ceclan [Fri, 7 Jun 2024 14:53:15 +0000 (17:53 +0300)]
iio: adc: ad7173: Add support for AD411x devices
Add support for AD4111/AD4112/AD4114/AD4115/AD4116.
The AD411X family encompasses a series of low power, low noise, 24-bit,
sigma-delta analog-to-digital converters that offer a versatile range of
specifications.
This family of ADCs integrates an analog front end suitable for processing
both fully differential and single-ended, bipolar voltage inputs
addressing a wide array of industrial and instrumentation requirements.
- All ADCs have inputs with a precision voltage divider with a division
ratio of 10.
- AD4116 has 5 low level inputs without a voltage divider.
- AD4111 and AD4112 support current inputs (0 mA to 20 mA) using a 50ohm
shunt resistor.
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240607-ad4111-v7-9-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dumitru Ceclan [Fri, 7 Jun 2024 14:53:14 +0000 (17:53 +0300)]
iio: adc: ad7173: document sampling frequency behaviour
The ADCs supported by this driver feature a sequencer that read in a
loop all the enabled chanels. When setting the individual sampling
frequency for each channel and enabling multiple channels, the effective
of each channel will be lower than the actual set value. Document this
behaviour in a comment.
Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240607-ad4111-v7-8-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dumitru Ceclan [Fri, 7 Jun 2024 14:53:13 +0000 (17:53 +0300)]
iio: adc: ad7173: refactor device info structs
Drop setting .has_temp and .has_input_buf to false in device info struct.
Drop array of device info structs and use individual structs for all;
drop models enum as no longer needed. This improves readability as the
structs are pointed directly.
Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240607-ad4111-v7-7-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dumitru Ceclan [Fri, 7 Jun 2024 14:53:12 +0000 (17:53 +0300)]
iio: adc: ad7173: add support for special inputs
Add support for selecting REF+ and REF- inputs on all models.
Add support for selecting ((AVDD1 − AVSS)/5) inputs
on supported models.
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240607-ad4111-v7-6-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dumitru Ceclan [Fri, 7 Jun 2024 14:53:11 +0000 (17:53 +0300)]
iio: adc: ad7173: refactor ain and vref selection
Move validation of analog inputs and reference voltage selection to
separate functions to reduce the size of the channel config parsing
function and improve readability.
Add defines for the number of analog inputs in a channel.
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240607-ad4111-v7-5-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Sigma delta ADCs with a sequencer need to disable the previously enabled
channel when reading using ad_sigma_delta_single_conversion(). This was
done manually in drivers for devices with sequencers.
This patch implements handling of single channel disabling after a
single conversion.
Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240607-ad4111-v7-3-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
David Lechner [Fri, 21 Jun 2024 20:51:31 +0000 (15:51 -0500)]
spi: add devm_spi_optimize_message() helper
This adds a new helper function devm_spi_optimize_message() that
automatically registers spi_unoptimize_message() to be called
when the device is removed.
projects / users / jedix / linux-maple.git / log