80 строки
1.9 KiB
C
80 строки
1.9 KiB
C
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/*
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* AD5624R SPI DAC driver
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*
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* Copyright 2010-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2.
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*/
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#ifndef SPI_AD5624R_H_
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#define SPI_AD5624R_H_
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#define AD5624R_DAC_CHANNELS 4
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#define AD5624R_ADDR_DAC0 0x0
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#define AD5624R_ADDR_DAC1 0x1
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#define AD5624R_ADDR_DAC2 0x2
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#define AD5624R_ADDR_DAC3 0x3
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#define AD5624R_ADDR_ALL_DAC 0x7
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#define AD5624R_CMD_WRITE_INPUT_N 0x0
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#define AD5624R_CMD_UPDATE_DAC_N 0x1
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#define AD5624R_CMD_WRITE_INPUT_N_UPDATE_ALL 0x2
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#define AD5624R_CMD_WRITE_INPUT_N_UPDATE_N 0x3
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#define AD5624R_CMD_POWERDOWN_DAC 0x4
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#define AD5624R_CMD_RESET 0x5
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#define AD5624R_CMD_LDAC_SETUP 0x6
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#define AD5624R_CMD_INTERNAL_REFER_SETUP 0x7
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#define AD5624R_LDAC_PWRDN_NONE 0x0
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#define AD5624R_LDAC_PWRDN_1K 0x1
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#define AD5624R_LDAC_PWRDN_100K 0x2
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#define AD5624R_LDAC_PWRDN_3STATE 0x3
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/**
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* struct ad5624r_chip_info - chip specific information
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* @channels: channel spec for the DAC
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* @int_vref_mv: AD5620/40/60: the internal reference voltage
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*/
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struct ad5624r_chip_info {
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const struct iio_chan_spec *channels;
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u16 int_vref_mv;
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};
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/**
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* struct ad5446_state - driver instance specific data
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* @indio_dev: the industrial I/O device
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* @us: spi_device
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* @chip_info: chip model specific constants, available modes etc
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* @reg: supply regulator
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* @vref_mv: actual reference voltage used
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* @pwr_down_mask power down mask
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* @pwr_down_mode current power down mode
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*/
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struct ad5624r_state {
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struct spi_device *us;
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const struct ad5624r_chip_info *chip_info;
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struct regulator *reg;
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unsigned short vref_mv;
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unsigned pwr_down_mask;
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unsigned pwr_down_mode;
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};
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/**
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* ad5624r_supported_device_ids:
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* The AD5624/44/64 parts are available in different
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* fixed internal reference voltage options.
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*/
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enum ad5624r_supported_device_ids {
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ID_AD5624R3,
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ID_AD5644R3,
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ID_AD5664R3,
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ID_AD5624R5,
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ID_AD5644R5,
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ID_AD5664R5,
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};
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#endif /* SPI_AD5624R_H_ */
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