Commit 371f778b authored by Matteo Martelli's avatar Matteo Martelli Committed by Jonathan Cameron
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iio: adc: add support for pac1921 



Add support for Microchip PAC1921 Power/Current monitor.

Implemented features:
* capture of bus voltage, sense voltage, current and power measurements
  in free-run integration mode
* support for both raw and triggered buffer reading
* support for overflow events
* scale attributes to control voltage and current gains
* oversampling ratio attribute to control the number of integration
  samples
* sampling rate attribute that reflects the integration period
* userspace attribute and DT parameter to control shunt resistor
* simple power management support

Limitations:
* operation mode fixed to free-run integration
* READ/INT pin and OUT pin not supported
* no controls for measurement resolutions and filters

Signed-off-by: default avatarMatteo Martelli <matteomartelli3@gmail.com>
Link: https://patch.msgid.link/20240724-iio-pac1921-v4-3-723698e903a3@gmail.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent e5535ccf

MAINTAINERS

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@@ -15054,6 +15054,13 @@ F: Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml 
F:	drivers/nvmem/microchip-otpc.c

F:	include/dt-bindings/nvmem/microchip,sama7g5-otpc.h









MICROCHIP PAC1921 POWER/CURRENT MONITOR DRIVER









M:	Matteo Martelli <matteomartelli3@gmail.com>









L:	linux-iio@vger.kernel.org









S:	Supported









F:	Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml









F:	drivers/iio/adc/pac1921.c

















MICROCHIP PAC1934 POWER/ENERGY MONITOR DRIVER









M:	Marius Cristea <marius.cristea@microchip.com>









L:	linux-iio@vger.kernel.org
































drivers/iio/adc/Kconfig



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@@ -1002,6 +1002,19 @@ config NPCM_ADC







	  This driver can also be built as a module. If so, the module









	  will be called npcm_adc.



















config PAC1921









	tristate "Microchip Technology PAC1921 driver"









	depends on I2C









	select REGMAP_I2C









	select IIO_BUFFER









	select IIO_TRIGGERED_BUFFER









	help









	  Say yes here to build support for Microchip Technology's PAC1921









	  High-Side Power/Current Monitor with Analog Output.



















	  This driver can also be built as a module. If so, the module









	  will be called pac1921.



















config PAC1934









	tristate "Microchip Technology PAC1934 driver"









	depends on I2C
































drivers/iio/adc/Makefile



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@@ -91,6 +91,7 @@ obj-$(CONFIG_MP2629_ADC) += mp2629_adc.o







obj-$(CONFIG_MXS_LRADC_ADC) += mxs-lradc-adc.o









obj-$(CONFIG_NAU7802) += nau7802.o









obj-$(CONFIG_NPCM_ADC) += npcm_adc.o









obj-$(CONFIG_PAC1921) += pac1921.o









obj-$(CONFIG_PAC1934) += pac1934.o









obj-$(CONFIG_PALMAS_GPADC) += palmas_gpadc.o









obj-$(CONFIG_QCOM_PM8XXX_XOADC) += qcom-pm8xxx-xoadc.o
































drivers/iio/adc/pac1921.c
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