1 /* 2 * AD5624R SPI DAC driver 3 * 4 * Copyright 2010-2011 Analog Devices Inc. 5 * 6 * Licensed under the GPL-2. 7 */ 8 #ifndef SPI_AD5624R_H_ 9 #define SPI_AD5624R_H_ 10 11 #define AD5624R_DAC_CHANNELS 4 12 13 #define AD5624R_ADDR_DAC0 0x0 14 #define AD5624R_ADDR_DAC1 0x1 15 #define AD5624R_ADDR_DAC2 0x2 16 #define AD5624R_ADDR_DAC3 0x3 17 #define AD5624R_ADDR_ALL_DAC 0x7 18 19 #define AD5624R_CMD_WRITE_INPUT_N 0x0 20 #define AD5624R_CMD_UPDATE_DAC_N 0x1 21 #define AD5624R_CMD_WRITE_INPUT_N_UPDATE_ALL 0x2 22 #define AD5624R_CMD_WRITE_INPUT_N_UPDATE_N 0x3 23 #define AD5624R_CMD_POWERDOWN_DAC 0x4 24 #define AD5624R_CMD_RESET 0x5 25 #define AD5624R_CMD_LDAC_SETUP 0x6 26 #define AD5624R_CMD_INTERNAL_REFER_SETUP 0x7 27 28 #define AD5624R_LDAC_PWRDN_NONE 0x0 29 #define AD5624R_LDAC_PWRDN_1K 0x1 30 #define AD5624R_LDAC_PWRDN_100K 0x2 31 #define AD5624R_LDAC_PWRDN_3STATE 0x3 32 33 /** 34 * struct ad5624r_chip_info - chip specific information 35 * @channels: channel spec for the DAC 36 * @int_vref_mv: AD5620/40/60: the internal reference voltage 37 */ 38 39 struct ad5624r_chip_info { 40 const struct iio_chan_spec *channels; 41 u16 int_vref_mv; 42 }; 43 44 /** 45 * struct ad5446_state - driver instance specific data 46 * @indio_dev: the industrial I/O device 47 * @us: spi_device 48 * @chip_info: chip model specific constants, available modes etc 49 * @reg: supply regulator 50 * @vref_mv: actual reference voltage used 51 * @pwr_down_mask power down mask 52 * @pwr_down_mode current power down mode 53 */ 54 55 struct ad5624r_state { 56 struct spi_device *us; 57 const struct ad5624r_chip_info *chip_info; 58 struct regulator *reg; 59 unsigned short vref_mv; 60 unsigned pwr_down_mask; 61 unsigned pwr_down_mode; 62 }; 63 64 /** 65 * ad5624r_supported_device_ids: 66 * The AD5624/44/64 parts are available in different 67 * fixed internal reference voltage options. 68 */ 69 70 enum ad5624r_supported_device_ids { 71 ID_AD5624R3, 72 ID_AD5644R3, 73 ID_AD5664R3, 74 ID_AD5624R5, 75 ID_AD5644R5, 76 ID_AD5664R5, 77 }; 78 79 #endif /* SPI_AD5624R_H_ */ 80