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path: root/drivers/iio/adc
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2024-06-25iio: adc: hx711: use dev_err_probe()David Lechner
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>
2024-06-25iio: adc: hx711: remove hx711_remove()David Lechner
By using a few more devm_ functions, we can remove the hx711_remove() function in the hx711 driver. platform_set_drvdata() is also removed since there are no more callers of platform_get_drvdata(). 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-v1-3-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: hx711: use devm_regulator_get_enable_read_voltage()David Lechner
Use the devm_regulator_get_enable_read_voltage() helper to simplify the code. 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-v1-2-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: aspeed_adc: use devm_regulator_get_enable_read_voltage()David Lechner
This makes use of the devm_regulator_get_enable_read_voltage() helper function to simplify the code. The error return is moved closer to the function call to make it easier to follow the logic. And a few blank lines are added for readability. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au> Link: https://patch.msgid.link/20240621-iio-regulator-refactor-round-2-v1-1-49e50cd0b99a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: ti-ads1119: Add driverJoão Paulo Gonçalves
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>
2024-06-25iio: adc: stm32-dfsdm-adc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-18-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: sc27xx_adc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-17-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: rn5t618-adc: make use of regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-16-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: qcom-spmi-rradc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-15-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: berlin2-adc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/20240617-review-v3-8-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: mp2629_adc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-14-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: meson_saradc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Reviewed-by: George Stark <gnstark@salutedevices.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-13-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: intel_mrfld_adc: make use of regmap_clear_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-12-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: ina2xx-adc: make use of regmap_clear_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-11-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: fsl-imx25-gcq: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-10-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: cpcap-adc: make use of regmap_clear_bits(), regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-9-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: bcm_iproc_adc: make use of regmap_clear_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-7-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: axp288_adc: make use of regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-6-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: axp20x_adc: make use of regmap_set_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing the mask twice, use regmap_set_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-5-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: ad4130: make use of regmap_clear_bits()Trevor Gamblin
Instead of using regmap_update_bits() and passing val = 0, use regmap_clear_bits(). Suggested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/20240617-review-v3-4-88d1338c4cca@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: ad7173: Add support for AD411x devicesDumitru Ceclan
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>
2024-06-25iio: adc: ad7173: document sampling frequency behaviourDumitru Ceclan
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>
2024-06-25iio: adc: ad7173: refactor device info structsDumitru Ceclan
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>
2024-06-25iio: adc: ad7173: add support for special inputsDumitru Ceclan
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>
2024-06-25iio: adc: ad7173: refactor ain and vref selectionDumitru Ceclan
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>
2024-06-25iio: adc: ad7173: refactor channel configuration parsingDumitru Ceclan
Move configurations regarding number of channels from *_fw_parse_device_config to *_fw_parse_channel_config. Suggested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/all/20240303162148.3ad91aa2@jic23-huawei/ Reviewed-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Link: https://patch.msgid.link/20240607-ad4111-v7-4-97e3855900a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-25iio: adc: ad_sigma_delta: add disable_one callbackDumitru Ceclan
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>
2024-06-22iio: adc: ad7944: use devm_regulator_get_enable_read_voltageDavid Lechner
This makes use of the new devm_regulator_get_enable_read_voltage() function to reduce boilerplate code. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240612-iio-adc-ref-supply-refactor-v2-5-fa622e7354e9@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-22iio: adc: ad7793: use devm_regulator_get_enable_read_voltageDavid Lechner
This makes use of the new devm_regulator_get_enable_read_voltage() function to reduce boilerplate code. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240612-iio-adc-ref-supply-refactor-v2-4-fa622e7354e9@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-22iio: adc: ad7292: use devm_regulator_get_enable_read_voltageDavid Lechner
This makes use of the new devm_regulator_get_enable_read_voltage() function to reduce boilerplate code. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240612-iio-adc-ref-supply-refactor-v2-3-fa622e7354e9@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-22iio: adc: ad7266: use devm_regulator_get_enable_read_voltageDavid Lechner
This makes use of the new devm_regulator_get_enable_read_voltage() function to reduce boilerplate code. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240612-iio-adc-ref-supply-refactor-v2-2-fa622e7354e9@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-22iio: adc: ad7192: Clean up devAlisa-Dariana Roman
Clean up by using a local variable struct device *dev. Also use dev_err_probe where possible. Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com> Link: https://patch.msgid.link/20240613114001.270233-2-alisa.roman@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-22iio: adc: adi-axi-adc: improve probe() error messagingTrevor Gamblin
The current error handling for calls such as devm_clk_get_enabled() in the adi-axi-adc 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_adc 44a00000.backend: probe with driver adi_axi_adc 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_adc 44a00000.backend: error -ENOENT: failed to get clock |adi_axi_adc 44a00000.backend: probe with driver adi_axi_adc failed with error -2 Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240613163407.2147884-1-tgamblin@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-17Merge tag 'v6.10-rc4' into char-misc-nextGreg Kroah-Hartman
We need the char-misc and iio fixes in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-13iio: adc: adi-axi-adc: add platform dependenciesNuno Sa
Being this device a soft core, it's only supported on some/specific platforms. Hence add proper dependencies for the supported platforms. Also add COMPILE_TEST to increase the build coverage. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240604-dev-axi-adc-kconfig-v1-1-cfb725606b8e@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: adc: mcp3564: drop redundant open-coded spi_get_device_match_data()Krzysztof Kozlowski
The driver calls spi_get_device_match_data() and on its failure calls again parts of it: spi_get_device_id() and getting driver data. This is entirely redundant, because it is part of spi_get_device_match_data(). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240606-spi-match-data-v1-8-320b291ee1fe@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: adc: ti-tsc2046: simplify with spi_get_device_match_data()Krzysztof Kozlowski
Use spi_get_device_match_data() helper to simplify a bit the driver. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240606-spi-match-data-v1-5-320b291ee1fe@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: adc: ti-ads131e08: simplify with spi_get_device_match_data()Krzysztof Kozlowski
Use spi_get_device_match_data() helper to simplify a bit the driver. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240606-spi-match-data-v1-4-320b291ee1fe@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: adc: max11205: simplify with spi_get_device_match_data()Krzysztof Kozlowski
Use spi_get_device_match_data() helper to simplify a bit the driver. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240606-spi-match-data-v1-3-320b291ee1fe@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: add missing MODULE_DESCRIPTION() macrosJeff Johnson
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/iio/adc/ingenic-adc.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/iio/adc/xilinx-ams.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/iio/buffer/kfifo_buf.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240607-md-drivers-iic-v1-1-9f9db6246083@quicinc.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: adc: axp20x_adc: Add support for AXP192Aidan MacDonald
The AXP192 is identical to the AXP20x, except for the addition of two more GPIO ADC channels. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-13iio: adc: ti-adc161s626: make use of iio_device_claim_direct_scoped()Gustavo Ueti Fukunaga
Make use of iio_device_claim_direct_scoped() to make error handling more natural and simplify code. Co-developed-by: Caio Dantas Simão Ugêda <caiodantas@usp.br> Signed-off-by: Caio Dantas Simão Ugêda <caiodantas@usp.br> Signed-off-by: Gustavo Ueti Fukunaga <gustavofukunaga@usp.br> Link: https://lore.kernel.org/r/20240527091942.53616-1-gustavofukunaga@usp.br Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-08iio: adc: ad7266: Fix variable checking bugFernando Yang
The ret variable was not checked after iio_device_release_direct_mode(), which could possibly cause errors Fixes: c70df20e3159 ("iio: adc: ad7266: claim direct mode during sensor read") Signed-off-by: Fernando Yang <hagisf@usp.br> Link: https://lore.kernel.org/r/20240603180757.8560-1-hagisf@usp.br Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-08iio: xilinx-ams: Don't include ams_ctrl_channels in scan_maskSean Anderson
ams_enable_channel_sequence constructs a "scan_mask" for all the PS and PL channels. This works out fine, since scan_index for these channels is less than 64. However, it also includes the ams_ctrl_channels, where scan_index is greater than 64, triggering undefined behavior. Since we don't need these channels anyway, just exclude them. Fixes: d5c70627a794 ("iio: adc: Add Xilinx AMS driver") Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Link: https://lore.kernel.org/r/20240311162800.11074-1-sean.anderson@linux.dev Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-04iio: adc: ad7380: add oversampling supportJulien Stephan
ad7380x(-4) parts are able to do oversampling to increase accuracy. This chips supports a normal oversampling mode and a rolling mode and also allows enabling and disabling extra resolution bits when oversampling is enabled. We have intentionally left out the rolling mode for now as there is not a compelling use case for it. User can process a captured data buffer to get the same effect. We are also currently not supporting changing the oversampling mode independently of the resolution bits. The resolution boost feature can only be enabled when oversampling is enabled and oversampling is not as useful without the resolution boost. So for now we consider the features tightly coupled. When oversampling is enabled, the resolution boost is enabled and when oversampling is disabled, the resolution boost is disabled. Since the resolution boost feature causes 16-bit chips to now have 18-bit data which means the storagebits has to change from 16 to 32 bits, we use the new ext_scan_type feature to allow changing the scan_type at runtime based on if the resolution boost is enabled or not. SPI message optimization has to be moved since now some of the xfer parameters change based on the resolution boost mode. A few neighboring comments are also fixed up while we are touching this code. Signed-off-by: Julien Stephan <jstephan@baylibre.com> Co-developed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240530-iio-add-support-for-multiple-scan-types-v3-5-cbc4acea2cfa@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-04iio: adc: ad7380: use spi_optimize_message()David Lechner
This changes the AD7380 to use spi_optimize_message() to optimize buffered reads. This changes both direct reads and buffered reads to use the same spi_message. This has some (welcome) side effects. The first is that in buffered reads, the timestamp will now correspond to the same sample rather than the previous sample. The second is that direct reads now use the same SPI bus speed as buffered reads. This reduces CPU usage of the IRQ thread from around 25% to around 20% when sampling at 10 kHz on a ZedBoard. Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240530-iio-add-support-for-multiple-scan-types-v3-4-cbc4acea2cfa@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-04iio: adc: ad7380: add support for ad738x-4 4 channels variantsJulien Stephan
Add support for ad7380/1/2/3-4 parts which are 4 channels variants from ad7380/1/2/3 Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://lore.kernel.org/r/20240528-adding-new-ad738x-driver-v7-7-4cd70a4c12c8@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-04iio: adc: ad7380: prepare for parts with more channelsJulien Stephan
The current driver supports only parts with 2 channels. In order to prepare the support of new compatible ADCs with more channels, this commit: - defines MAX_NUM_CHANNEL to specify the maximum number of channels currently supported by the driver - adds available_scan_mask member in ad7380_chip_info structure - fixes spi xfer struct len depending on number of channels - fixes scan_data.raw buffer size to handle more channels - adds a timing specifications structure in ad7380_chip_info structure Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://lore.kernel.org/r/20240528-adding-new-ad738x-driver-v7-5-4cd70a4c12c8@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-04iio: adc: ad7380: add support for pseudo-differential partsDavid Lechner
Add support for AD7383, AD7384 pseudo-differential compatible parts. Pseudo differential parts require common mode voltage supplies so add the support for them and add the support of IIO_CHAN_INFO_OFFSET to retrieve the offset Signed-off-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://lore.kernel.org/r/20240528-adding-new-ad738x-driver-v7-4-4cd70a4c12c8@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-06-04iio: adc: ad7380: new driver for AD7380 ADCsDavid Lechner
This adds a new driver for the AD7380 family ADCs. The driver currently implements basic support for the AD7380, AD7381, 2-channel differential ADCs. Support for additional single-ended, pseudo-differential and 4-channel chips that use the same register map as well as additional features of the chip will be added in future patches. [Julien Stephan: fix rx/tx buffer for regmap access] [Julien Stephan: fix scale issue] [Julien Stephan: use the new iio_device_claim_direct_scoped instead of iio_device_claim_direct_mode] Co-developed-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Stefan Popa <stefan.popa@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Signed-off-by: David Lechner <dlechner@baylibre.com> [Julien Stephan: add datasheet links of supported parts] Signed-off-by: Julien Stephan <jstephan@baylibre.com> Link: https://lore.kernel.org/r/20240528-adding-new-ad738x-driver-v7-2-4cd70a4c12c8@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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