drivers/iio/pressure/bmp280.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <linux/bitops.h>
   3 #include <linux/device.h>
   4 #include <linux/regmap.h>
   5
   6 /* BMP280 specific registers */
   7 #define BMP280_REG_HUMIDITY_LSB         0xFE
   8 #define BMP280_REG_HUMIDITY_MSB         0xFD
   9 #define BMP280_REG_TEMP_XLSB            0xFC
  10 #define BMP280_REG_TEMP_LSB             0xFB
  11 #define BMP280_REG_TEMP_MSB             0xFA
  12 #define BMP280_REG_PRESS_XLSB           0xF9
  13 #define BMP280_REG_PRESS_LSB            0xF8
  14 #define BMP280_REG_PRESS_MSB            0xF7
  15
  16 #define BMP280_REG_CONFIG               0xF5
  17 #define BMP280_REG_CTRL_MEAS            0xF4
  18 #define BMP280_REG_STATUS               0xF3
  19 #define BMP280_REG_CTRL_HUMIDITY        0xF2
  20
  21 /* Due to non linear mapping, and data sizes we can't do a bulk read */
  22 #define BMP280_REG_COMP_H1              0xA1
  23 #define BMP280_REG_COMP_H2              0xE1
  24 #define BMP280_REG_COMP_H3              0xE3
  25 #define BMP280_REG_COMP_H4              0xE4
  26 #define BMP280_REG_COMP_H5              0xE5
  27 #define BMP280_REG_COMP_H6              0xE7
  28
  29 #define BMP280_REG_COMP_TEMP_START      0x88
  30 #define BMP280_COMP_TEMP_REG_COUNT      6
  31
  32 #define BMP280_REG_COMP_PRESS_START     0x8E
  33 #define BMP280_COMP_PRESS_REG_COUNT     18
  34
  35 #define BMP280_FILTER_MASK              (BIT(4) | BIT(3) | BIT(2))
  36 #define BMP280_FILTER_OFF               0
  37 #define BMP280_FILTER_2X                BIT(2)
  38 #define BMP280_FILTER_4X                BIT(3)
  39 #define BMP280_FILTER_8X                (BIT(3) | BIT(2))
  40 #define BMP280_FILTER_16X               BIT(4)
  41
  42 #define BMP280_OSRS_HUMIDITY_MASK       (BIT(2) | BIT(1) | BIT(0))
  43 #define BMP280_OSRS_HUMIDITIY_X(osrs_h) ((osrs_h) << 0)
  44 #define BMP280_OSRS_HUMIDITY_SKIP       0
  45 #define BMP280_OSRS_HUMIDITY_1X         BMP280_OSRS_HUMIDITIY_X(1)
  46 #define BMP280_OSRS_HUMIDITY_2X         BMP280_OSRS_HUMIDITIY_X(2)
  47 #define BMP280_OSRS_HUMIDITY_4X         BMP280_OSRS_HUMIDITIY_X(3)
  48 #define BMP280_OSRS_HUMIDITY_8X         BMP280_OSRS_HUMIDITIY_X(4)
  49 #define BMP280_OSRS_HUMIDITY_16X        BMP280_OSRS_HUMIDITIY_X(5)
  50
  51 #define BMP280_OSRS_TEMP_MASK           (BIT(7) | BIT(6) | BIT(5))
  52 #define BMP280_OSRS_TEMP_SKIP           0
  53 #define BMP280_OSRS_TEMP_X(osrs_t)      ((osrs_t) << 5)
  54 #define BMP280_OSRS_TEMP_1X             BMP280_OSRS_TEMP_X(1)
  55 #define BMP280_OSRS_TEMP_2X             BMP280_OSRS_TEMP_X(2)
  56 #define BMP280_OSRS_TEMP_4X             BMP280_OSRS_TEMP_X(3)
  57 #define BMP280_OSRS_TEMP_8X             BMP280_OSRS_TEMP_X(4)
  58 #define BMP280_OSRS_TEMP_16X            BMP280_OSRS_TEMP_X(5)
  59
  60 #define BMP280_OSRS_PRESS_MASK          (BIT(4) | BIT(3) | BIT(2))
  61 #define BMP280_OSRS_PRESS_SKIP          0
  62 #define BMP280_OSRS_PRESS_X(osrs_p)     ((osrs_p) << 2)
  63 #define BMP280_OSRS_PRESS_1X            BMP280_OSRS_PRESS_X(1)
  64 #define BMP280_OSRS_PRESS_2X            BMP280_OSRS_PRESS_X(2)
  65 #define BMP280_OSRS_PRESS_4X            BMP280_OSRS_PRESS_X(3)
  66 #define BMP280_OSRS_PRESS_8X            BMP280_OSRS_PRESS_X(4)
  67 #define BMP280_OSRS_PRESS_16X           BMP280_OSRS_PRESS_X(5)
  68
  69 #define BMP280_MODE_MASK                (BIT(1) | BIT(0))
  70 #define BMP280_MODE_SLEEP               0
  71 #define BMP280_MODE_FORCED              BIT(0)
  72 #define BMP280_MODE_NORMAL              (BIT(1) | BIT(0))
  73
  74 /* BMP180 specific registers */
  75 #define BMP180_REG_OUT_XLSB             0xF8
  76 #define BMP180_REG_OUT_LSB              0xF7
  77 #define BMP180_REG_OUT_MSB              0xF6
  78
  79 #define BMP180_REG_CALIB_START          0xAA
  80 #define BMP180_REG_CALIB_COUNT          22
  81
  82 #define BMP180_MEAS_SCO                 BIT(5)
  83 #define BMP180_MEAS_TEMP                (0x0E | BMP180_MEAS_SCO)
  84 #define BMP180_MEAS_PRESS_X(oss)        ((oss) << 6 | 0x14 | BMP180_MEAS_SCO)
  85 #define BMP180_MEAS_PRESS_1X            BMP180_MEAS_PRESS_X(0)
  86 #define BMP180_MEAS_PRESS_2X            BMP180_MEAS_PRESS_X(1)
  87 #define BMP180_MEAS_PRESS_4X            BMP180_MEAS_PRESS_X(2)
  88 #define BMP180_MEAS_PRESS_8X            BMP180_MEAS_PRESS_X(3)
  89
  90 /* BMP180 and BMP280 common registers */
  91 #define BMP280_REG_CTRL_MEAS            0xF4
  92 #define BMP280_REG_RESET                0xE0
  93 #define BMP280_REG_ID                   0xD0
  94
  95 #define BMP180_CHIP_ID                  0x55
  96 #define BMP280_CHIP_ID                  0x58
  97 #define BME280_CHIP_ID                  0x60
  98 #define BMP280_SOFT_RESET_VAL           0xB6
  99
 100 /* BMP280 register skipped special values */
 101 #define BMP280_TEMP_SKIPPED             0x80000
 102 #define BMP280_PRESS_SKIPPED            0x80000
 103 #define BMP280_HUMIDITY_SKIPPED         0x8000
 104
 105 /* Regmap configurations */
 106 extern const struct regmap_config bmp180_regmap_config;
 107 extern const struct regmap_config bmp280_regmap_config;
 108
 109 /* Probe called from different transports */
 110 int bmp280_common_probe(struct device *dev,
 111                         struct regmap *regmap,
 112                         unsigned int chip,
 113                         const char *name,
 114                         int irq);
 115 int bmp280_common_remove(struct device *dev);
 116
 117 /* PM ops */
 118 extern const struct dev_pm_ops bmp280_dev_pm_ops;