GNU Linux-libre 4.19.314-gnu1
[releases.git] / drivers / iio / dac / ad5624r.h
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_ */