On Mon, 23 Jan 2017, Arnaud Pouliquen wrote: > DFSDM hardware IP can be used at the same time for ADC sigma delta Same time as what? > conversion and audio PDM microphone. > MFD driver is in charge of configuring IP registers and managing IP clocks. > For this it exports an API to handles filters and channels resources. This looks like an ADC driver? What is it that makes it an MFD? > Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxx> > --- > drivers/mfd/Kconfig | 11 + > drivers/mfd/Makefile | 2 + > drivers/mfd/stm32-dfsdm-reg.h | 220 +++++++++ > drivers/mfd/stm32-dfsdm.c | 1044 +++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/stm32-dfsdm.h | 324 ++++++++++++ > 5 files changed, 1601 insertions(+) > create mode 100644 drivers/mfd/stm32-dfsdm-reg.h > create mode 100644 drivers/mfd/stm32-dfsdm.c > create mode 100644 include/linux/mfd/stm32-dfsdm.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index c6df644..4bb660b 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1607,6 +1607,17 @@ config MFD_STW481X > in various ST Microelectronics and ST-Ericsson embedded > Nomadik series. > > +config MFD_STM32_DFSDM > + tristate "ST Microelectronics STM32 DFSDM" > + depends on (ARCH_STM32 && OF) || COMPILE_TEST > + select MFD_CORE > + select REGMAP > + select REGMAP_MMIO > + help > + Select this option to enable the STM32 Digital Filter > + for Sigma Delta Modulators (DFSDM) driver used > + in various STM32 series. > + > menu "Multimedia Capabilities Port drivers" > depends on ARCH_SA1100 [...] -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
