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IIO: ADC: add STM32 DFSDM sigma delta ADC support

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Add DFSDM driver to handle sigma delta ADC.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnaud Pouliquen
2018-01-10 11:13:11 +01:00
committed by Mark Brown
parent bed73904e7
commit e2e6771c64
3 changed files with 742 additions and 0 deletions
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13
drivers/iio/adc/Kconfig
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@@ -680,6 +680,19 @@ config STM32_DFSDM_CORE
This driver can also be built as a module. If so, the module
will be called stm32-dfsdm-core.
config STM32_DFSDM_ADC
tristate "STMicroelectronics STM32 dfsdm adc"
depends on (ARCH_STM32 && OF) || COMPILE_TEST
select STM32_DFSDM_CORE
select REGMAP_MMIO
select IIO_BUFFER_HW_CONSUMER
help
Select this option to support ADCSigma delta modulator for
STMicroelectronics STM32 digital filter for sigma delta converter.
This driver can also be built as a module. If so, the module
will be called stm32-dfsdm-adc.
config STX104
tristate "Apex Embedded Systems STX104 driver"
depends on PC104 && X86 && ISA_BUS_API

1
drivers/iio/adc/Makefile
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@@ -65,6 +65,7 @@ obj-$(CONFIG_SUN4I_GPADC) += sun4i-gpadc-iio.o
obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o
obj-$(CONFIG_STM32_ADC) += stm32-adc.o
obj-$(CONFIG_STM32_DFSDM_CORE) += stm32-dfsdm-core.o
obj-$(CONFIG_STM32_DFSDM_ADC) += stm32-dfsdm-adc.o
obj-$(CONFIG_TI_ADC081C) += ti-adc081c.o
obj-$(CONFIG_TI_ADC0832) += ti-adc0832.o
obj-$(CONFIG_TI_ADC084S021) += ti-adc084s021.o

728
drivers/iio/adc/stm32-dfsdm-adc.c Normal file
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