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Michael Hennerich14f88f12011-03-09 16:01:45 +01001/*
2 * AD5624R SPI DAC driver
3 *
4 * Copyright 2010-2011 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2.
7 */
Barry Song6790e292010-10-27 21:44:07 -04008#ifndef SPI_AD5624R_H_
9#define SPI_AD5624R_H_
10
Michael Hennerich14f88f12011-03-09 16:01:45 +010011#define AD5624R_DAC_CHANNELS 4
Barry Song6790e292010-10-27 21:44:07 -040012
Michael Hennerich14f88f12011-03-09 16:01:45 +010013#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
Barry Song6790e292010-10-27 21:44:07 -040018
Michael Hennerich14f88f12011-03-09 16:01:45 +010019#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
Barry Song6790e292010-10-27 21:44:07 -040027
Michael Hennerich14f88f12011-03-09 16:01:45 +010028#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
Lars-Peter Clausen275de9f2011-11-15 16:31:24 +010035 * @channels: channel spec for the DAC
Michael Hennerich14f88f12011-03-09 16:01:45 +010036 * @int_vref_mv: AD5620/40/60: the internal reference voltage
37 */
38
39struct ad5624r_chip_info {
Lars-Peter Clausen275de9f2011-11-15 16:31:24 +010040 const struct iio_chan_spec *channels;
Michael Hennerich14f88f12011-03-09 16:01:45 +010041 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
55struct ad5624r_state {
Michael Hennerich14f88f12011-03-09 16:01:45 +010056 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
70enum 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_ */