xref: /linux/drivers/iio/dac/ad5624r.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
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_ */
79