drivers/iio/dac/ad5624r.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * AD5624R SPI DAC driver
   4  *
   5  * Copyright 2010-2011 Analog Devices Inc.
   6  */
   7 #ifndef SPI_AD5624R_H_
   8 #define SPI_AD5624R_H_
   9
  10 #define AD5624R_DAC_CHANNELS                    4
  11
  12 #define AD5624R_ADDR_DAC0                       0x0
  13 #define AD5624R_ADDR_DAC1                       0x1
  14 #define AD5624R_ADDR_DAC2                       0x2
  15 #define AD5624R_ADDR_DAC3                       0x3
  16 #define AD5624R_ADDR_ALL_DAC                    0x7
  17
  18 #define AD5624R_CMD_WRITE_INPUT_N               0x0
  19 #define AD5624R_CMD_UPDATE_DAC_N                0x1
  20 #define AD5624R_CMD_WRITE_INPUT_N_UPDATE_ALL    0x2
  21 #define AD5624R_CMD_WRITE_INPUT_N_UPDATE_N      0x3
  22 #define AD5624R_CMD_POWERDOWN_DAC               0x4
  23 #define AD5624R_CMD_RESET                       0x5
  24 #define AD5624R_CMD_LDAC_SETUP                  0x6
  25 #define AD5624R_CMD_INTERNAL_REFER_SETUP        0x7
  26
  27 #define AD5624R_LDAC_PWRDN_NONE                 0x0
  28 #define AD5624R_LDAC_PWRDN_1K                   0x1
  29 #define AD5624R_LDAC_PWRDN_100K                 0x2
  30 #define AD5624R_LDAC_PWRDN_3STATE               0x3
  31
  32 /**
  33  * struct ad5624r_chip_info - chip specific information
  34  * @channels:           channel spec for the DAC
  35  * @int_vref_mv:        AD5620/40/60: the internal reference voltage
  36  */
  37
  38 struct ad5624r_chip_info {
  39         const struct iio_chan_spec      *channels;
  40         u16                             int_vref_mv;
  41 };
  42
  43 /**
  44  * struct ad5446_state - driver instance specific data
  45  * @indio_dev:          the industrial I/O device
  46  * @us:                 spi_device
  47  * @chip_info:          chip model specific constants, available modes etc
  48  * @reg:                supply regulator
  49  * @vref_mv:            actual reference voltage used
  50  * @pwr_down_mask       power down mask
  51  * @pwr_down_mode       current power down mode
  52  */
  53
  54 struct ad5624r_state {
  55         struct spi_device               *us;
  56         const struct ad5624r_chip_info  *chip_info;
  57         struct regulator                *reg;
  58         unsigned short                  vref_mv;
  59         unsigned                        pwr_down_mask;
  60         unsigned                        pwr_down_mode;
  61 };
  62
  63 /**
  64  * ad5624r_supported_device_ids:
  65  * The AD5624/44/64 parts are available in different
  66  * fixed internal reference voltage options.
  67  */
  68
  69 enum ad5624r_supported_device_ids {
  70         ID_AD5624R3,
  71         ID_AD5644R3,
  72         ID_AD5664R3,
  73         ID_AD5624R5,
  74         ID_AD5644R5,
  75         ID_AD5664R5,
  76 };
  77
  78 #endif /* SPI_AD5624R_H_ */