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); 115 116 /* PM ops */ 117 extern const struct dev_pm_ops bmp280_dev_pm_ops; 118