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
39struct 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
55struct 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
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_ */
80