| /* |
| * AD7780/AD7781 SPI ADC driver |
| * |
| * Copyright 2011 Analog Devices Inc. |
| * |
| * Licensed under the GPL-2. |
| */ |
| #ifndef IIO_ADC_AD7780_H_ |
| #define IIO_ADC_AD7780_H_ |
| |
| /* |
| * TODO: struct ad7780_platform_data needs to go into include/linux/iio |
| */ |
| |
| /* NOTE: |
| * The AD7780 doesn't feature a dedicated SPI chip select, in addition it |
| * features a dual use data out ready DOUT/RDY output. |
| * In order to avoid contentions on the SPI bus, it's therefore necessary |
| * to use spi bus locking combined with a dedicated GPIO to control the |
| * power down reset signal of the AD7780. |
| * |
| * The DOUT/RDY output must also be wired to an interrupt capable GPIO. |
| */ |
| |
| struct ad7780_platform_data { |
| u16 vref_mv; |
| int gpio_pdrst; |
| }; |
| |
| #endif /* IIO_ADC_AD7780_H_ */ |
