AD7999

代码说明：

  AD7999挂接在SPI上的驱动参考，在平台SPI设备spi_board_info 结构添加对应设备描述。(4-Channel, 8-Bit ADC with I2C Compatible Interface in 8-Lead SOT-23 )

文件列表：

drivers_staging_iio_adc_ad799x.h,3403,2012-03-01
drivers_staging_iio_adc_ad799x_core.c,21516,2012-03-01
drivers_staging_iio_adc_ad799x_ring.c,4341,2012-03-01