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* nvmem: meson-efuse: Replacing the use of of_node_put to __freeMarileneGarcia2024-07-051-3/+2
| | | | | | | | | | | | | | | | Use __free for device_node values, and thus drop calls to of_node_put. The goal is to reduce memory management issues by using this scope-based of_node_put() cleanup to simplify function exit handling. When using __free a resource is allocated within a block, it is automatically freed at the end of the block. Suggested-by: Julia Lawall <julia.lawall@inria.fr> Signed-off-by: MarileneGarcia <marilene.agarcia@gmail.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20240705074852.423202-4-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* dt-bindings: nvmem: mediatek: efuse: add support for MT7981Rafał Miłecki2024-07-051-0/+1
| | | | | | | | | | | Add compatible for MT7981 SoC. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20240705074852.423202-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* nvmem: add missing MODULE_DESCRIPTION() macrosJeff Johnson2024-07-053-0/+3
| | | | | | | | | | | | | | make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvmem/nvmem-apple-efuses.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvmem/nvmem_brcm_nvram.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvmem/nvmem_u-boot-env.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20240705074852.423202-2-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* misc: Register a PPI for the vcpu stall detection virtual deviceSebastian Ene2024-07-041-2/+29
| | | | | | | | | | | Request a PPI for each vCPU during probe which will be used by the host to communicate a stall detected event on the vCPU. When the host raises this interrupt from the virtual machine monitor, the guest is expected to handle the interrupt and panic. Signed-off-by: Sebastian Ene <sebastianene@google.com> Link: https://lore.kernel.org/r/20240703153732.3214238-3-sebastianene@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* dt-bindings: vcpu_stall_detector: Add a PPI interrupt to the virtual deviceSebastian Ene2024-07-041-0/+6
| | | | | | | | | | | The vcpu stall detector allows the host to monitor the availability of a guest VM. Introduce a PPI interrupt which can be injected from the host into the virtual gic to let the guest reboot itself. Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Sebastian Ene <sebastianene@google.com> Link: https://lore.kernel.org/r/20240703153732.3214238-2-sebastianene@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* misc: keba: Add basic KEBA CP500 system FPGA supportGerhard Engleder2024-07-047-0/+525
| | | | | | | | | | | | | | | | | | | | | The KEBA CP500 system FPGA is a PCIe device, which consists of multiple IP cores. Every IP core has its own auxiliary driver. The cp500 driver registers an auxiliary device for each device and the corresponding drivers are loaded by the Linux driver infrastructure. Currently 3 variants of this device exists. Every variant has its own PCI device ID, which is used to determine the list of available IP cores. In this first version only the auxiliary device for the I2C controller is registered. Besides the auxiliary device registration some other basic functions of the FPGA are implemented; e.g, FPGA version sysfs file, keep FPGA configuration on reset sysfs file, error message for errors on the internal AXI bus of the FPGA. Signed-off-by: Gerhard Engleder <eg@keba.com> Link: https://lore.kernel.org/r/20240630194740.7137-2-gerhard@engleder-embedded.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* eeprom: ee1004: Instantiate jc42 devices for DIMMS implementing Rev.1 SPDGuenter Roeck2024-07-041-3/+20
| | | | | | | | | | | | | | | | | | DDR4 DIMMS implementing SPD Annex L, Revision 1 do not implement SPD byte 14 (Module Temperature Sensor); this byte was only added in revision 2 of the standard. This only applies to DDR4, not DDR4E or LPDDR4, since those DDR types were only introduced in revision 3 of the standard. Use this information to instantiate the jc42 device if the module is a DDR4 following SPD revision 1.0 and a device is detected at the expected thermal sensor address, even if the Module Temperature Sensor byte suggests that the thermal sensor is not supported. Cc: Heiner Kallweit <hkallweit1@gmail.com> Cc: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20240629173716.20389-2-linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* eeprom: ee1004: Call i2c_new_scanned_device to instantiate thermal sensorGuenter Roeck2024-07-041-3/+3
| | | | | | | | | | | | | | | | | | | | Instantiating a device by calling i2c_new_client_device() assumes that the device is not already instantiated. If that is not the case, it will return an error and generate a misleading kernel log message. i2c i2c-0: Failed to register i2c client jc42 at 0x18 (-16) This can be reproduced by unloading the ee1004 driver and loading it again. Avoid this by calling i2c_new_scanned_device() instead, which returns silently if a device is already instantiated or does not exist. Fixes: 393bd1000f81 ("eeprom: ee1004: add support for temperature sensor") Cc: Heiner Kallweit <hkallweit1@gmail.com> Cc: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20240629173716.20389-1-linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* eeprom: ee1004: Add nvmem supportArmin Wolf2024-07-042-20/+40
| | | | | | | | | | | | | | Currently the driver does not register a nvmem provider, which means that userspace programs cannot access the ee1004 EEPROM through the standard nvmem sysfs API. Fix this by replacing the custom sysfs attribute with a standard nvmem interface, which also takes care of backwards compatibility. Tested on a Dell Inspiron 3505. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20240625063459.429953-2-W_Armin@gmx.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* eeprom: ee1004: Use devres for bus data cleanupArmin Wolf2024-07-041-21/+21
| | | | | | | | | | | | Use devm_add_action_or_reset() to clean up the bus data at driver removal or when an error occurs during probe. This will allow us to use other devres-based APIs later. Tested on a Dell Inspiron 3505. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20240625063459.429953-1-W_Armin@gmx.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'iio-for-6.11b' of ↵Greg Kroah-Hartman2024-07-04119-1494/+4447
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next Jonathan writes: IIO: 2nd set of new device support, features and cleanup for 6.11 The big one here is we finally have Paul Cercueil's (and others) DMA buffer support for IIO devices enabling high speed zero copy transfer of data to and from sensors supported by IIO (and for example USB). This should aid with upstream support of a range of higher performance ADCs and DACs. Two merges from other trees - spi/spi_devm_optimize used for simplification in ad7944. - dmaengine/topic_dma_vec to enable the DMABUF series. One feature with impact outside IIO. - Richer set of dev_err_probe() like helpers to cover ERR_PTR() cases. New device support ================== adi,ad7173 - Add support for AD4111, AD4112, AD4114, AD4115 and ADC4116 pseudo differential ADCs. Major driver rework was needed to enabled these. adi,ad7944 - Use devm_spi_optimize_message() to avoid a local devm cleanup callback. This is the example case from the patch set, others will follow. mediatek,mt6359-auxadc - New driver for this ADC IP found in MT6357, MT6358 and MT6359 PMICs. st,accel - Add support for the LIS2DS12 accelerometer ti,ads1119 - New driver for this 16 bit 2-differential or 4-single ended channel ADC. Features ======== dt-bindings - Introduce new common-mode-channel property to help handle pseudo differential ADCs where we have something that looks like one side of differential input, but which is only suited for use with a slow moving reference. adi,adf4350 - Support use as a clock provider. iio-hmwon - Support reading of labels from IIO devices by their consumers and use this in the hwmon bridge. Cleanup and minor fixes ======================= Treewide - Use regmap_clear_bits() / regmap_set_bits() to simplify open coded equivalents. - Use devm_regulator_get_enable_read_voltage() to replace equivalent opencoded boilerplate. In some cases enabled complete conversion to devm handling and removal of explicit remove() callbacks. - Introduce dev_err_ptr_probe() and other variants and make use of of them in a couple of examples driver cleanups. Will find use in many more drivers soon. adi,ad7192 - Introduce local struct device *dev and use dev_err_probe() to give more readable code. adi,adi-axi-adc/dac - Improved consistency of messages using dev_err_probe() adi,adis - Split the trigger handling into cases that needed paging and those that don't resulting in more readable code. - Use cleanup.h to simplify error paths via scoped cleanup. - Add adis specific lock helpers and make use of them in a number of drivers. adi,ad7192 - Update maintainer (Alisa-Dariana Roman) adi,ad7606 - dt-binding cleanup. avago,apds9306 - Add a maintainer entry (Subhajit Ghosh) linear,ltc2309 - Fix a wrong endian type. st,stm32-dfsdm - Fix a missing port property in the dt-binding. st,sensors - Relax whoami match failure to a warning print rather than probe failure. This enables fallback compatibles to existing parts from those that don't necessarily even exit yet. * tag 'iio-for-6.11b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (112 commits) iio: adc: ad7173: Fix uninitialized symbol is_current_chan iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC math.h: Add unsigned 8 bits fractional numbers type dt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADC iio: common: scmi_iio: convert to dev_err_probe() iio: backend: make use of dev_err_cast_probe() iio: temperature: ltc2983: convert to dev_err_probe() dev_printk: add new dev_err_probe() helpers iio: xilinx-ams: Add labels iio: adc: ad7944: use devm_spi_optimize_message() Documentation: iio: Document high-speed DMABUF based API iio: buffer-dmaengine: Support new DMABUF based userspace API iio: buffer-dma: Enable support for DMABUFs iio: core: Add new DMABUF interface infrastructure MAINTAINERS: Update AD7192 driver maintainer iio: adc: ad7192: use devm_regulator_get_enable_read_voltage iio: st_sensors: relax WhoAmI check in st_sensors_verify_id() MAINTAINERS: Add AVAGO APDS9306 dt-bindings: iio: adc: adi,ad7606: comment and sort the compatible names dt-bindings: iio: adc: adi,ad7606: add missing datasheet link ...
| * iio: adc: ad7173: Fix uninitialized symbol is_current_chanJonathan Cameron2024-07-021-1/+3
| | | | | | | | | | | | | | | | | | | | | | Move the definition down and make it a boolean that is initialized to false. Fixes: 13d12e3ad12d ("iio: adc: ad7173: Add support for AD411x devices") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/202406232046.DKfBJq6o-lkp@intel.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADCAngeloGioacchino Del Regno2024-07-013-0/+619
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a driver to support reading the Auxiliary ADC IP found in the MediaTek MT6357, MT6358 and MT6359 Power Management ICs, featuring a different register layout, configuration reset and ADC reading sequence from the other already supported MediaTek SoC or PMIC (aux)ADC HW. This driver provides multiple ADC channels for system monitoring, such as battery voltage, PMIC temperature, PMIC-internal voltage regulators temperature, and others. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Andy Shevchenko <andy@kernel.org> Link: https://patch.msgid.link/20240604123008.327424-5-angelogioacchino.delregno@collabora.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * math.h: Add unsigned 8 bits fractional numbers typeAngeloGioacchino Del Regno2024-07-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | Some users may be requiring only rather small numbers as both numerator and denominator: add signed and unsigned 8 bits structs {s8,u8}_fract. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Andy Shevchenko <andy@kernel.org> Link: https://patch.msgid.link/20240604123008.327424-4-angelogioacchino.delregno@collabora.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * dt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADCAngeloGioacchino Del Regno2024-07-014-0/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://patch.msgid.link/20240604123008.327424-2-angelogioacchino.delregno@collabora.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: common: scmi_iio: convert to dev_err_probe()Nuno Sa2024-06-301-26/+19
| | | | | | | | | | | | | | | | | | Make use of dev_err_probe() and dev_err_ptr_probe() to simplify error paths during probe. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-4-51bb229edd79@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: backend: make use of dev_err_cast_probe()Nuno Sa2024-06-301-5/+3
| | | | | | | | | | | | | | | | Using dev_err_cast_probe() to simplify the code. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-3-51bb229edd79@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: temperature: ltc2983: convert to dev_err_probe()Nuno Sa2024-06-301-148/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | 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. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-2-51bb229edd79@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * dev_printk: add new dev_err_probe() helpersNuno Sa2024-06-301-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is similar to dev_err_probe() but for cases where an ERR_PTR() or ERR_CAST() is to be returned simplifying patterns like: dev_err_probe(dev, ret, ...); return ERR_PTR(ret) or dev_err_probe(dev, PTR_ERR(ptr), ...); return ERR_CAST(ptr) Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-1-51bb229edd79@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: xilinx-ams: Add labelsSean Anderson2024-06-301-48/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Link: https://patch.msgid.link/20240620204842.817237-1-sean.anderson@linux.dev Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: adc: ad7944: use devm_spi_optimize_message()David Lechner2024-06-301-23/+3
| | | | | | | | | | | | | | | | | | Use new devm_spi_optimize_message() helper to simplify repeated code in the ad7944 driver. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240624-devm_spi_optimize_message-v3-2-912138c27b66@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * Merge tag 'spi-devm-optimize' into togregJonathan Cameron2024-06-303-0/+33
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
| | * spi: add EXPORT_SYMBOL_GPL(devm_spi_optimize_message)David Lechner2024-06-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | devm_spi_optimize_message() is a public function and needs EXPORT_SYMBOL_GPL. Reported-by: Jonathan Cameron <jic23@kernel.org> Closes: https://lore.kernel.org/linux-iio/20240624204424.6a91a5e4@jic23-huawei/ Fixes: d4a0055fdc22 ("spi: add devm_spi_optimize_message() helper") Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240624-devm_spi_optimize_message-v2-1-58155c0180c2@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: add devm_spi_optimize_message() helperDavid Lechner2024-06-223-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new helper function devm_spi_optimize_message() that automatically registers spi_unoptimize_message() to be called when the device is removed. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240621-devm_spi_optimize_message-v1-2-3f9dcba6e95e@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
| | * Documentation: devres: add missing SPI helpersDavid Lechner2024-06-221-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | A few SPI devm_* helpers were missing from the devres documentation. This patch adds them. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240621-devm_spi_optimize_message-v1-1-3f9dcba6e95e@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
| * | Documentation: iio: Document high-speed DMABUF based APIPaul Cercueil2024-06-302-0/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the new DMABUF based API. 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> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://patch.msgid.link/20240620122726.41232-7-paul@crapouillou.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | iio: buffer-dmaengine: Support new DMABUF based userspace APIPaul Cercueil2024-06-301-9/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | iio: buffer-dma: Enable support for DMABUFsPaul Cercueil2024-06-302-11/+198
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | iio: core: Add new DMABUF interface infrastructurePaul Cercueil2024-06-304-0/+515
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Merge tag 'dmaengine_topic_dma_vec' into togregJonathan Cameron2024-06-304-0/+92
| |\ \ | | | | | | | | | | | | | | | | Dmaengine topic - New device_prep_peripheral_dma_vec, documentation and user
| | * | Documentation: dmaengine: Document new dma_vec APIPaul Cercueil2024-06-212-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the dmaengine_prep_peripheral_dma_vec() API function, the device_prep_peripheral_dma_vec() backend function, and the dma_vec struct. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20240620122726.41232-8-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
| | * | dmaengine: dma-axi-dmac: Implement device_prep_peripheral_dma_vecPaul Cercueil2024-06-211-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add implementation of the .device_prep_peripheral_dma_vec() callback. 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://lore.kernel.org/r/20240620122726.41232-3-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
| | * | dmaengine: Add API function dmaengine_prep_peripheral_dma_vec()Paul Cercueil2024-06-211-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function can be used to initiate a scatter-gather DMA transfer, where the address and size of each segment is located in one entry of the dma_vec array. The major difference with dmaengine_prep_slave_sg() is that it supports specifying the lengths of each DMA transfer; as trying to override the length of the transfer with dmaengine_prep_slave_sg() is a very tedious process. The introduction of a new API function is also justified by the fact that scatterlists are on their way out. Note that dmaengine_prep_interleaved_dma() is not helpful either in that case, as it assumes that the address of each segment will be higher than the one of the previous segment, which we just cannot guarantee in case of a scatter-gather transfer. 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://lore.kernel.org/r/20240620122726.41232-2-paul@crapouillou.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * | | MAINTAINERS: Update AD7192 driver maintainerAlisa-Dariana Roman2024-06-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Alexandru Tachici has not been active. Also the email address included is not reachable anymore. I was assigned to work on the driver instead. Remove Alexandru Tachici and add myself as maintainer of AD7192 driver. Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://patch.msgid.link/20240624124941.113010-7-alisa.roman@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: ad7192: use devm_regulator_get_enable_read_voltageDavid Lechner2024-06-301-67/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | iio: st_sensors: relax WhoAmI check in st_sensors_verify_id()Kaustabh Chakraborty2024-06-291-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. Suggested-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org> Link: https://patch.msgid.link/20240625082800.62305-1-kauschluss@disroot.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | MAINTAINERS: Add AVAGO APDS9306Subhajit Ghosh2024-06-291-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add myself as maintainer of APDS9306 ambient light sensor driver. Signed-off-by: Subhajit Ghosh <subhajit.ghosh@tweaklogic.com> Link: https://patch.msgid.link/20240626135231.8937-1-subhajit.ghosh@tweaklogic.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | dt-bindings: iio: adc: adi,ad7606: comment and sort the compatible namesGuillaume Stols2024-06-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. Signed-off-by: Guillaume Stols <gstols@baylibre.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20240628-cleanup-ad7606-v2-2-96e02f90256d@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | dt-bindings: iio: adc: adi,ad7606: add missing datasheet linkGuillaume Stols2024-06-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add AD7606-5 datasheet link. Signed-off-by: Guillaume Stols <gstols@baylibre.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20240628-cleanup-ad7606-v2-1-96e02f90256d@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | hwmon: iio: Add labels from IIO channelsSean Anderson2024-06-281-5/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add labels from IIO channels to our channels. This allows userspace to display more meaningful names instead of "in0" or "temp5". Although lm-sensors gracefully handles errors when reading channel labels, the ABI says the label attribute > Should only be created if the driver has hints about what this voltage > channel is being used for, and user-space doesn't. Therefore, we test to see if the channel has a label before creating the attribute. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Acked-by: Guenter Roeck <linux@roeck-us.net> Link: https://patch.msgid.link/20240624174601.1527244-3-sean.anderson@linux.dev Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: Add iio_read_channel_label to inkern APISean Anderson2024-06-284-9/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://patch.msgid.link/20240624174601.1527244-2-sean.anderson@linux.dev Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: ltc2309: Fix endian type passed to be16_to_cpu()Jonathan Cameron2024-06-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Picked up by sparse. Cc: Liam Beguin <liambeguin@gmail.com> Reviewed-by: Liam Beguin <liambeguin@gmail.com> Link: https://patch.msgid.link/20240624193210.347434-1-jic23@kernel.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | dt-bindings: iio: stm32: dfsdm: fix dtbs warnings on dfsdm audio portOlivier Moysan2024-06-281-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | iio: dac: ad3552r: use devm_regulator_get_enable_read_voltage()David Lechner2024-06-251-24/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use devm_regulator_get_enable_read_voltage() to simplify the code. Error message is slightly changed since there is only one error return now. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-10-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: ti-ads8688: drop ads8688_remove()David Lechner2024-06-251-26/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By using a few devm_ functions, we can simplify the driver and remove the ads8688_remove() function. spi_set_drvdata() is removed since there are no more callers of spi_get_drvdata(). Also use dev_err_probe() to simplify error return. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-9-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: ti-ads8688: use devm_regulator_get_enable_read_voltage()David Lechner2024-06-251-24/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use devm_regulator_get_enable_read_voltage() to simplify the code. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-8-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: ti-adc108s102: use devm_regulator_get_enable_read_voltage()David Lechner2024-06-251-25/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use devm_regulator_get_enable_read_voltage() to simplify the code. Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-7-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: max1363: use devm_regulator_get_enable_read_voltage()David Lechner2024-06-251-24/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use devm_regulator_get_enable_read_voltage() to simplify the code. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-6-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: ltc2309: use devm_regulator_get_enable_read_voltage()David Lechner2024-06-251-37/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-5-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * | | iio: adc: hx711: use dev_err_probe()David Lechner2024-06-251-22/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use dev_err_probe() to simplify error returns in the probe function. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Andreas Klinger <ak@it-klinger.de> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-4-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 03:38:09 +0100