# # For a description of the syntax of this configuration file, # see misc/tools/kconfig-language.txt. # config ADC bool "Analog-to-Digital Conversion" default n ---help--- Select to enable support for analog input device support. This includes not only Analog-to-Digital Converters (ADC) but also amplifiers and analog multiplexers. if ADC config ADC_FIFOSIZE int "ADC buffer size" default 8 ---help--- This variable defines the size of the ADC ring buffer that is used to queue received ADC data until they can be retrieved by the application by reading from the ADC character device. NOTE: Since this is a ring buffer, the actual number of bytes that can be retained in buffer is (ADC_FIFOSIZE - 1). config ADC_ADS125X bool "TI ADS1255/ADS1256 support" default n select SPI if ADC_ADS125X config ADS1255_FREQUENCY int "ADS1255/ADS1256 SPI frequency" default 1000000 endif # ADC_ADS125X config ADC_PGA11X bool "TI PGA112/3/6/7 support" default n select SPI ---help--- Enables support for the PGA112, PGA113, PGA116, PGA117 Zerø-Drift PROGRAMMABLE GAIN AMPLIFIER with MUX if ADC_PGA11X config PGA11X_SPIFREQUENCY int "TI PGA112/3/6/7 SPI frequency" default 1000000 ---help--- PGA11x SPI frequency. config PGA11X_SPIMODE int "TI PGA112/3/6/7 SPI mode" default 0 ---help--- PGA11x SPI mode. The specification says that the device operates in Mode 0 or Mode 3. But sometimes you need to tinker with this to get things to work correctly. Default: Mode 0 config PGA11X_DAISYCHAIN bool "TI PGA112/3/6/7 daisy chain mode" default n ---help--- Enable support to use two PGA116/7's in Daisy Chain configuration. config PGA11X_MULTIPLE bool "Multiple TI PGA112/3/6/7 support" default n depends on !PGA11X_DAISYCHAIN ---help--- Can be defined to support multiple PGA11X devices on board with separate chip selects (not daisy chained). Each device will require a customized SPI interface to distinguish them when SPI_SELECT is called with devid=SPIDEV_MUX. endif # if ADC_PGA11X endif # ADC config DAC bool "Digital-to-Analog Conversion" default n ---help--- Select to enable support for Digital-to-Analog Converters (DACs). if DAC config DAC_AD5410 bool "AD5410 support" default n select SPI endif # DAC