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 #define   BME680_GAS_RANGE_MASK                 GENMASK(3, 0)
  20
  21 #define BME680_REG_CTRL_HUMIDITY                0x72
  22 #define   BME680_OSRS_HUMIDITY_MASK             GENMASK(2, 0)
  23
  24 #define BME680_REG_CTRL_MEAS                    0x74
  25 #define   BME680_OSRS_TEMP_MASK                 GENMASK(7, 5)
  26 #define   BME680_OSRS_PRESS_MASK                GENMASK(4, 2)
  27 #define   BME680_MODE_MASK                      GENMASK(1, 0)
  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_MASK                 GENMASK(3, 0)
  41
  42 #define BME680_REG_RES_HEAT_RANGE               0x02
  43 #define   BME680_RHRANGE_MASK                   GENMASK(5, 4)
  44 #define BME680_REG_RES_HEAT_VAL                 0x00
  45 #define BME680_REG_RANGE_SW_ERR                 0x04
  46 #define   BME680_RSERROR_MASK                   GENMASK(7, 4)
  47 #define BME680_REG_RES_HEAT_0                   0x5A
  48 #define BME680_REG_GAS_WAIT_0                   0x64
  49 #define BME680_ADC_GAS_RES_SHIFT                6
  50 #define BME680_AMB_TEMP                         25
  51
  52 #define BME680_REG_CTRL_GAS_1                   0x71
  53 #define   BME680_RUN_GAS_MASK                   BIT(4)
  54 #define   BME680_NB_CONV_MASK                   GENMASK(3, 0)
  55
  56 #define BME680_REG_MEAS_STAT_0                  0x1D
  57 #define   BME680_GAS_MEAS_BIT                   BIT(6)
  58
  59 /* Calibration Parameters */
  60 #define BME680_T2_LSB_REG       0x8A
  61 #define BME680_T3_REG           0x8C
  62 #define BME680_P1_LSB_REG       0x8E
  63 #define BME680_P2_LSB_REG       0x90
  64 #define BME680_P3_REG           0x92
  65 #define BME680_P4_LSB_REG       0x94
  66 #define BME680_P5_LSB_REG       0x96
  67 #define BME680_P7_REG           0x98
  68 #define BME680_P6_REG           0x99
  69 #define BME680_P8_LSB_REG       0x9C
  70 #define BME680_P9_LSB_REG       0x9E
  71 #define BME680_P10_REG          0xA0
  72 #define BME680_H2_LSB_REG       0xE2
  73 #define BME680_H2_MSB_REG       0xE1
  74 #define BME680_H1_MSB_REG       0xE3
  75 #define BME680_H1_LSB_REG       0xE2
  76 #define BME680_H3_REG           0xE4
  77 #define BME680_H4_REG           0xE5
  78 #define BME680_H5_REG           0xE6
  79 #define BME680_H6_REG           0xE7
  80 #define BME680_H7_REG           0xE8
  81 #define BME680_T1_LSB_REG       0xE9
  82 #define BME680_GH2_LSB_REG      0xEB
  83 #define BME680_GH1_REG          0xED
  84 #define BME680_GH3_REG          0xEE
  85
  86 extern const struct regmap_config bme680_regmap_config;
  87
  88 int bme680_core_probe(struct device *dev, struct regmap *regmap,
  89                       const char *name);
  90
  91 #endif  /* BME680_H_ */