GNU Linux-libre 4.19.314-gnu1
[releases.git] / drivers / iio / chemical / bme680.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef BME680_H_
3 #define BME680_H_
4
5 #define BME680_REG_CHIP_ID                      0xD0
6 #define BME680_CHIP_ID_VAL                      0x61
7 #define BME680_REG_SOFT_RESET                   0xE0
8 #define BME680_CMD_SOFTRESET                    0xB6
9 #define BME680_REG_STATUS                       0x73
10 #define   BME680_SPI_MEM_PAGE_BIT               BIT(4)
11 #define     BME680_SPI_MEM_PAGE_1_VAL           1
12
13 #define BME680_REG_TEMP_MSB                     0x22
14 #define BME680_REG_PRESS_MSB                    0x1F
15 #define BM6880_REG_HUMIDITY_MSB                 0x25
16 #define BME680_REG_GAS_MSB                      0x2A
17 #define BME680_REG_GAS_R_LSB                    0x2B
18 #define   BME680_GAS_STAB_BIT                   BIT(4)
19
20 #define BME680_REG_CTRL_HUMIDITY                0x72
21 #define   BME680_OSRS_HUMIDITY_MASK             GENMASK(2, 0)
22
23 #define BME680_REG_CTRL_MEAS                    0x74
24 #define   BME680_OSRS_TEMP_MASK                 GENMASK(7, 5)
25 #define   BME680_OSRS_PRESS_MASK                GENMASK(4, 2)
26 #define   BME680_MODE_MASK                      GENMASK(1, 0)
27
28 #define BME680_MODE_FORCED                      1
29 #define BME680_MODE_SLEEP                       0
30
31 #define BME680_REG_CONFIG                       0x75
32 #define   BME680_FILTER_MASK                    GENMASK(4, 2)
33 #define     BME680_FILTER_COEFF_VAL             BIT(1)
34
35 /* TEMP/PRESS/HUMID reading skipped */
36 #define BME680_MEAS_SKIPPED                     0x8000
37
38 #define BME680_MAX_OVERFLOW_VAL                 0x40000000
39 #define BME680_HUM_REG_SHIFT_VAL                4
40 #define BME680_BIT_H1_DATA_MSK                  0x0F
41
42 #define BME680_REG_RES_HEAT_RANGE               0x02
43 #define BME680_RHRANGE_MSK                      0x30
44 #define BME680_REG_RES_HEAT_VAL                 0x00
45 #define BME680_REG_RANGE_SW_ERR                 0x04
46 #define BME680_RSERROR_MSK                      0xF0
47 #define BME680_REG_RES_HEAT_0                   0x5A
48 #define BME680_REG_GAS_WAIT_0                   0x64
49 #define BME680_GAS_RANGE_MASK                   0x0F
50 #define BME680_ADC_GAS_RES_SHIFT                6
51 #define BME680_AMB_TEMP                         25
52
53 #define BME680_REG_CTRL_GAS_1                   0x71
54 #define   BME680_RUN_GAS_MASK                   BIT(4)
55 #define   BME680_NB_CONV_MASK                   GENMASK(3, 0)
56 #define     BME680_RUN_GAS_EN_BIT               BIT(4)
57 #define     BME680_NB_CONV_0_VAL                0
58
59 #define BME680_REG_MEAS_STAT_0                  0x1D
60 #define   BME680_GAS_MEAS_BIT                   BIT(6)
61
62 /* Calibration Parameters */
63 #define BME680_T2_LSB_REG       0x8A
64 #define BME680_T3_REG           0x8C
65 #define BME680_P1_LSB_REG       0x8E
66 #define BME680_P2_LSB_REG       0x90
67 #define BME680_P3_REG           0x92
68 #define BME680_P4_LSB_REG       0x94
69 #define BME680_P5_LSB_REG       0x96
70 #define BME680_P7_REG           0x98
71 #define BME680_P6_REG           0x99
72 #define BME680_P8_LSB_REG       0x9C
73 #define BME680_P9_LSB_REG       0x9E
74 #define BME680_P10_REG          0xA0
75 #define BME680_H2_LSB_REG       0xE2
76 #define BME680_H2_MSB_REG       0xE1
77 #define BME680_H1_MSB_REG       0xE3
78 #define BME680_H1_LSB_REG       0xE2
79 #define BME680_H3_REG           0xE4
80 #define BME680_H4_REG           0xE5
81 #define BME680_H5_REG           0xE6
82 #define BME680_H6_REG           0xE7
83 #define BME680_H7_REG           0xE8
84 #define BME680_T1_LSB_REG       0xE9
85 #define BME680_GH2_LSB_REG      0xEB
86 #define BME680_GH1_REG          0xED
87 #define BME680_GH3_REG          0xEE
88
89 extern const struct regmap_config bme680_regmap_config;
90
91 int bme680_core_probe(struct device *dev, struct regmap *regmap,
92                       const char *name);
93
94 #endif  /* BME680_H_ */