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/*
* 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_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_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_ */
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