diff options
Diffstat (limited to 'drivers/staging/iio/dac/ad5624r.h')
-rw-r--r-- | drivers/staging/iio/dac/ad5624r.h | 89 |
1 files changed, 74 insertions, 15 deletions
diff --git a/drivers/staging/iio/dac/ad5624r.h b/drivers/staging/iio/dac/ad5624r.h index ce518be652b7..c16df4ed52ca 100644 --- a/drivers/staging/iio/dac/ad5624r.h +++ b/drivers/staging/iio/dac/ad5624r.h @@ -1,21 +1,80 @@ +/* + * AD5624R SPI DAC driver + * + * Copyright 2010-2011 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ #ifndef SPI_AD5624R_H_ #define SPI_AD5624R_H_ -#define AD5624R_DAC_CHANNELS 4 +#define AD5624R_DAC_CHANNELS 4 -#define AD5624R_ADDR_DAC0 0x0 -#define AD5624R_ADDR_DAC1 0x1 -#define AD5624R_ADDR_DAC2 0x2 -#define AD5624R_ADDR_DAC3 0x3 -#define AD5624R_ADDR_ALL_DAC 0x7 +#define AD5624R_ADDR_DAC0 0x0 +#define AD5624R_ADDR_DAC1 0x1 +#define AD5624R_ADDR_DAC2 0x2 +#define AD5624R_ADDR_DAC3 0x3 +#define AD5624R_ADDR_ALL_DAC 0x7 -#define AD5624R_CMD_WRITE_INPUT_N 0x0 -#define AD5624R_CMD_UPDATE_DAC_N 0x1 -#define AD5624R_CMD_WRITE_INPUT_N_UPDATE_ALL 0x2 -#define AD5624R_CMD_WRITE_INPUT_N_UPDATE_N 0x3 -#define AD5624R_CMD_POWERDOWN_DAC 0x4 -#define AD5624R_CMD_RESET 0x5 -#define AD5624R_CMD_LDAC_SETUP 0x6 -#define AD5624R_CMD_INTERNAL_REFER_SETUP 0x7 +#define AD5624R_CMD_WRITE_INPUT_N 0x0 +#define AD5624R_CMD_UPDATE_DAC_N 0x1 +#define AD5624R_CMD_WRITE_INPUT_N_UPDATE_ALL 0x2 +#define AD5624R_CMD_WRITE_INPUT_N_UPDATE_N 0x3 +#define AD5624R_CMD_POWERDOWN_DAC 0x4 +#define AD5624R_CMD_RESET 0x5 +#define AD5624R_CMD_LDAC_SETUP 0x6 +#define AD5624R_CMD_INTERNAL_REFER_SETUP 0x7 -#endif +#define AD5624R_LDAC_PWRDN_NONE 0x0 +#define AD5624R_LDAC_PWRDN_1K 0x1 +#define AD5624R_LDAC_PWRDN_100K 0x2 +#define AD5624R_LDAC_PWRDN_3STATE 0x3 + +/** + * struct ad5624r_chip_info - chip specific information + * @bits: accuracy of the DAC in bits + * @int_vref_mv: AD5620/40/60: the internal reference voltage + */ + +struct ad5624r_chip_info { + u8 bits; + u16 int_vref_mv; +}; + +/** + * struct ad5446_state - driver instance specific data + * @indio_dev: the industrial I/O device + * @us: spi_device + * @chip_info: chip model specific constants, available modes etc + * @reg: supply regulator + * @vref_mv: actual reference voltage used + * @pwr_down_mask power down mask + * @pwr_down_mode current power down mode + */ + +struct ad5624r_state { + struct iio_dev *indio_dev; + struct spi_device *us; + const struct ad5624r_chip_info *chip_info; + struct regulator *reg; + unsigned short vref_mv; + unsigned pwr_down_mask; + unsigned pwr_down_mode; +}; + +/** + * ad5624r_supported_device_ids: + * The AD5624/44/64 parts are available in different + * fixed internal reference voltage options. + */ + +enum ad5624r_supported_device_ids { + ID_AD5624R3, + ID_AD5644R3, + ID_AD5664R3, + ID_AD5624R5, + ID_AD5644R5, + ID_AD5664R5, +}; + +#endif /* SPI_AD5624R_H_ */ |