- 19 Apr, 2020 37 commits
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Michael Hennerich authored
The AD9467 is a 16-bit, monolithic, IF sampling analog-to-digital converter (ADC). It is optimized for high performanceover wide bandwidths and ease of use. The product operates at a 250 MSPS conversion rate and is designed for wireless receivers, instrumentation, and test equipment that require a high dynamic range. The ADC requires 1.8 V and 3.3 V power supplies and a low voltage differential input clock for full performance operation. No external reference or driver components are required for many applications. Data outputs are LVDS compatible (ANSI-644 compatible) and include the means to reduce the overall current needed for short trace distances. Since the chip can operate at such high sample-rates (much higher than classical interfaces), it requires that a DMA controller be used to interface directly to the chip and push data into memory. Typically, the AXI ADC IP core is used to interface with it. Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/AD9467.pdfSigned-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Alexandru Ardelean authored
This change adds the bindings documentation for the AXI ADC driver. Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Michael Hennerich authored
This change adds support for the Analog Devices Generic AXI ADC IP core. The IP core is used for interfacing with analog-to-digital (ADC) converters that require either a high-speed serial interface (JESD204B/C) or a source synchronous parallel interface (LVDS/CMOS). Usually, some other interface type (i.e SPI) is used as a control interface for the actual ADC, while the IP core (controlled via this driver), will interface to the data-lines of the ADC and handle the streaming of data into memory via DMA. Because of this, the AXI ADC driver needs the other SPI-ADC driver to register with it. The SPI-ADC needs to be register via the SPI framework, while the AXI ADC registers as a platform driver. The two cannot be ordered in a hierarchy as both drivers have their own registers, and trying to organize this [in a hierarchy becomes] problematic when trying to map memory/registers. There are some modes where the AXI ADC can operate as standalone ADC, but those will be implemented at a later point in time. DocLink: https://wiki.analog.com/resources/fpga/docs/axi_adc_ipSigned-off-by:
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Alexandru Ardelean authored
Currently, when using a 'iio_dmaengine_buffer_alloc()', an matching call to 'iio_dmaengine_buffer_free()' must be made. With this change, this can be avoided by using 'devm_iio_dmaengine_buffer_alloc()'. The buffer will get free'd via the device's devres handling. Signed-off-by:
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Alexandru Ardelean authored
The 'size_t' type behaves differently on 64-bit architectures, and causes compiler a warning of the sort "format '%u' expects argument of type 'unsigned int', but argument 3 has type 'size_t {aka long unsigned int}'". This change adds the correct specifier for the 'align' field. Fixes: 4538c185 ("iio: buffer-dmaengine: Report buffer length requirements") Reported-by:kbuild test robot <lkp@intel.com> Signed-off-by:
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Alexandru Ardelean authored
The format for all ADI AXI IP cores is the same. i.e. 'major.minor.patch'. This patch adds the helper macros to be re-used in ADI AXI drivers. Acked-by:
Moritz Fischer <mdf@kernel.org> Signed-off-by:
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Alexandru Ardelean authored
The initial version use a tab between '#define' & 'ADI_AXI_REG_VERSION'. This changes it to space. The change is purely cosmetic. Acked-by:
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Alexandru Ardelean authored
This seems like a left-over from a7348347 ("staging:iio: Add polling of events on the ring access chrdev."). Then it was moved into the sca3000 driver around 9dd4694d ("iio: staging: sca3000: hide stufftoread logic"), and that one seemed to be the only user of this. Then it eventually was no longer used after 152a6a88 ("staging:iio:accel:sca3000 move to hybrid hard / soft buffer design.") Signed-off-by:
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Rohit Sarkar authored
Remove redundant comparison to a boolean variable. Fixes coccinelle warning: drivers/iio/temperature//ltc2983.c:393:20-32: WARNING: Comparison to bool drivers/iio/temperature//ltc2983.c:394:20-32: WARNING: Comparison to bool Signed-off-by:
Rohit Sarkar <rohitsarkar5398@gmail.com> Acked-by:
Nuno Sá <nuno.sa@analog.com> Signed-off-by:
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Rohit Sarkar authored
The debugfs interface provides direct access to read and write device registers if debugfs is enabled. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by:
Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> Signed-off-by:
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Andy Shevchenko authored
For easy grepping on debug purposes join string literals back in the messages. No functional change. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Andy Shevchenko authored
In few places the unnecessary explicit castings are being used. Drop them for good. Signed-off-by:
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Andy Shevchenko authored
Show by using a corresponding API call that GPIO is optional. Signed-off-by:
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Andy Shevchenko authored
Convert to use ->read_avail() instead of open-coded attribute handling. Suggested-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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Andy Shevchenko authored
With DEBUG_SHIRQ enabled we have a kernel crash [ 116.482696] BUG: kernel NULL pointer dereference, address: 0000000000000000 ... [ 116.606571] Call Trace: [ 116.609023] <IRQ> [ 116.611047] complete+0x34/0x50 [ 116.614206] bmp085_eoc_irq+0x9/0x10 [bmp280] because DEBUG_SHIRQ mechanism fires an IRQ before registration and drivers ought to be able to handle an interrupt happening before request_irq() returns. Fixes: aae95394 ("iio: pressure: bmp280: add support for BMP085 EOC interrupt") Signed-off-by:
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Wolfram Sang authored
Move away from the deprecated API and return the shiny new ERRPTR where useful. Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
Nishant Malpani <nish.malpani25@gmail.com> Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Nishant Malpani authored
Utilize %pe format specifier from vsprintf while printing error logs with dev_err(). Discards the use of unnecessary explicit casting and prints symbolic error name which might prove to be convenient during debugging. Signed-off-by:
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Alexandru Ardelean authored
This change uses the read_avail and '.info_mask_shared_by_type_available' modifier to set the available scale. Essentially, nothing changes to the driver's ABI. The main idea for this patch is to remove the AD7793 driver from checkpatch's radar. There have been about ~3 attempts to fix/break the 'in_voltage-voltage_scale_available' attribute, because checkpatch assumed it to be an arithmetic operation and people were trying to change that. Signed-off-by:
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Lars-Peter Clausen authored
Before activating a buffer make sure that at least one channel is enabled. Activating a buffer with 0 channels enabled doesn't make too much sense and disallowing this case makes sure that individual driver don't have to add special case code to handle it. Currently, without this patch enabling a buffer is possible and no error is produced. With this patch -EINVAL is returned. An example of execution with this patch and some instrumented print-code: root@analog:~# cd /sys/bus/iio/devices/iio\:device3/buffer root@analog:/sys/bus/iio/devices/iio:device3/buffer# echo 1 > enable 0: iio_verify_update 748 indio_dev->masklength 2 *insert_buffer->scan_mask 00000000 1: iio_verify_update 753 2:__iio_update_buffers 1115 ret -22 3: iio_buffer_store_enable 1241 ret -22 -bash: echo: write error: Invalid argument 1, 2 & 3 are exit-error paths. 0 the first print in iio_verify_update() rergardless of error path. Without this patch (and same instrumented print-code): root@analog:~# cd /sys/bus/iio/devices/iio\:device3/buffer root@analog:/sys/bus/iio/devices/iio:device3/buffer# echo 1 > enable 0: iio_verify_update 748 indio_dev->masklength 2 *insert_buffer->scan_mask 00000000 root@analog:/sys/bus/iio/devices/iio:device3/buffer# Buffer is enabled with no error. Note from Jonathan: Probably not suitable for automatic application to stable. This has been there from the very start. It tidies up an odd corner case but won't effect any 'real' users. Fixes: 84b36ce5 ("staging:iio: Add support for multiple buffers") Signed-off-by:
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Takashi Iwai authored
snprintf() is a hard-to-use function, it's especially difficult to use it for concatenating substrings in a buffer with a limited size. Since snprintf() returns the would-be-output size, not the actual size, the subsequent use of snprintf() may go beyond the given limit easily. Although the current code doesn't actually overflow the buffer, it's an incorrect usage. This patch replaces such snprintf() calls with a safer version, scnprintf(). Also this fixes the incorrect argument of the buffer limit size passed to snprintf(), too. The size has to be decremented for the remaining length. Signed-off-by:
Takashi Iwai <tiwai@suse.de> Reviewed-by:
Brian Masney <masneyb@onstation.org> Signed-off-by:
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Rohit Sarkar authored
Replace usage indio_dev's mlock with either local lock or iio_device_claim_direct_mode. Signed-off-by:
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Rohit Sarkar authored
Instead of of_property_read_xxx use device_property_read_xxx as it is compatible with ACPI too as opposed to only device tree. Signed-off-by:
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Mike Looijmans authored
The BMI088 is pin-compatible with the BMI055, and provides both gyro and accel functions. The gyro part is similar to the BMI055 and this adds the chip to the list of supported devices for the gyro part. The accel part of the chip is not compatible with anything existing already. Signed-off-by:
Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by:
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Alexandru Ardelean authored
Commit 3862828a ("iio: buffer: Switch to bitmap_zalloc()") introduced bitmap_alloc(), but commit 20ea39ef ("iio: Fix scan mask selection") reverted it. This change adds it back. The only difference is that it's adding bitmap_zalloc(). There might be some changes later that would require initializing it to zero. In any case, now it's already zero-ing the trialmask. Appears to have been the result of merge conflict resolution rather than an intentional revert. Reviewed-by:
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Syed Nayyar Waris authored
Add Syed Nayyar Waris as a co-maintainer for the ACCES 104-QUAD-8 counter driver. Signed-off-by:
Syed Nayyar Waris <syednwaris@gmail.com> Acked-by:
William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by:
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Alexandru Ardelean authored
Now that all channel SigmaDelta IIO channel macros have been localized, remove the generic ones. Signed-off-by:
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Alexandru Ardelean authored
This driver seems to use most of the AD_SD_*_CHANNEL. This change will move them in the driver. The intent is that if a new part comes along which would require tweaks per IIO channel, these should be doable in the driver. Signed-off-by:
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Alexandru Ardelean authored
This driver seems to use most of the AD_SD_*_CHANNEL. This change will move them in the driver. The intent is that if a new part comes along which would require tweaks per IIO channel, these should be doable in the driver. Signed-off-by:
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Alexandru Ardelean authored
This change gets rid of the AD_SD_*_CHANNEL macros in favor of defining it's own. The ad7780 is quite simpler than it's other Sigma-Delta brothers. It turned out that centralizing the AD_SD_*_CHANNEL macros doesn't scale too well, especially with some more complicated drivers. Some of the variations in the more complicated drivers require new macros, and that way things can become harder to maintain. Signed-off-by:
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- 21 Mar, 2020 3 commits
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Nishant Malpani authored
This patch renames macro to fix the following warning generated by checkpatch.pl: WARNING: 'DISBLED' may be misspelled - perhaps 'DISABLED'? Signed-off-by:
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Rohit Sarkar authored
"mlock" should ideally only be used by the iio core. The mlock implementation may change in the future which means that no driver should be explicitly using mlock. Signed-off-by:
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Daniel Campello authored
Add SEMTECH SX9310/9311 driver. The device has the following entry points: Usual frequency: - sampling_frequency - sampling_frequency_available Instant reading of current values for different sensors: - in_proximity0_raw - in_proximity1_raw - in_proximity2_raw - in_proximity3_comb_raw and associated events in events/ Signed-off-by:
Gwendal Grignou <gwendal@chromium.org> Signed-off-by:
Enrico Granata <egranata@chromium.org> Signed-off-by:
Daniel Campello <campello@chromium.org> Signed-off-by:
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