diff options
Diffstat (limited to 'drivers/iio/pressure/bmp280.h')
| -rw-r--r-- | drivers/iio/pressure/bmp280.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h new file mode 100644 index 000000000..c791325c7 --- /dev/null +++ b/drivers/iio/pressure/bmp280.h @@ -0,0 +1,207 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <linux/bitops.h> +#include <linux/device.h> +#include <linux/regmap.h> + +/* BMP380 specific registers */ +#define BMP380_REG_CMD 0x7E +#define BMP380_REG_CONFIG 0x1F +#define BMP380_REG_ODR 0x1D +#define BMP380_REG_OSR 0x1C +#define BMP380_REG_POWER_CONTROL 0x1B +#define BMP380_REG_IF_CONFIG 0x1A +#define BMP380_REG_INT_CONTROL 0x19 +#define BMP380_REG_INT_STATUS 0x11 +#define BMP380_REG_EVENT 0x10 +#define BMP380_REG_STATUS 0x03 +#define BMP380_REG_ERROR 0x02 +#define BMP380_REG_ID 0x00 + +#define BMP380_REG_FIFO_CONFIG_1 0x18 +#define BMP380_REG_FIFO_CONFIG_2 0x17 +#define BMP380_REG_FIFO_WATERMARK_MSB 0x16 +#define BMP380_REG_FIFO_WATERMARK_LSB 0x15 +#define BMP380_REG_FIFO_DATA 0x14 +#define BMP380_REG_FIFO_LENGTH_MSB 0x13 +#define BMP380_REG_FIFO_LENGTH_LSB 0x12 + +#define BMP380_REG_SENSOR_TIME_MSB 0x0E +#define BMP380_REG_SENSOR_TIME_LSB 0x0D +#define BMP380_REG_SENSOR_TIME_XLSB 0x0C + +#define BMP380_REG_TEMP_MSB 0x09 +#define BMP380_REG_TEMP_LSB 0x08 +#define BMP380_REG_TEMP_XLSB 0x07 + +#define BMP380_REG_PRESS_MSB 0x06 +#define BMP380_REG_PRESS_LSB 0x05 +#define BMP380_REG_PRESS_XLSB 0x04 + +#define BMP380_REG_CALIB_TEMP_START 0x31 +#define BMP380_CALIB_REG_COUNT 21 + +#define BMP380_FILTER_MASK GENMASK(3, 1) +#define BMP380_FILTER_OFF 0 +#define BMP380_FILTER_1X 1 +#define BMP380_FILTER_3X 2 +#define BMP380_FILTER_7X 3 +#define BMP380_FILTER_15X 4 +#define BMP380_FILTER_31X 5 +#define BMP380_FILTER_63X 6 +#define BMP380_FILTER_127X 7 + +#define BMP380_OSRS_TEMP_MASK GENMASK(5, 3) +#define BMP380_OSRS_PRESS_MASK GENMASK(2, 0) + +#define BMP380_ODRS_MASK GENMASK(4, 0) + +#define BMP380_CTRL_SENSORS_MASK GENMASK(1, 0) +#define BMP380_CTRL_SENSORS_PRESS_EN BIT(0) +#define BMP380_CTRL_SENSORS_TEMP_EN BIT(1) +#define BMP380_MODE_MASK GENMASK(5, 4) +#define BMP380_MODE_SLEEP 0 +#define BMP380_MODE_FORCED 1 +#define BMP380_MODE_NORMAL 3 + +#define BMP380_MIN_TEMP -4000 +#define BMP380_MAX_TEMP 8500 +#define BMP380_MIN_PRES 3000000 +#define BMP380_MAX_PRES 12500000 + +#define BMP380_CMD_NOOP 0x00 +#define BMP380_CMD_EXTMODE_EN_MID 0x34 +#define BMP380_CMD_FIFO_FLUSH 0xB0 +#define BMP380_CMD_SOFT_RESET 0xB6 + +#define BMP380_STATUS_CMD_RDY_MASK BIT(4) +#define BMP380_STATUS_DRDY_PRESS_MASK BIT(5) +#define BMP380_STATUS_DRDY_TEMP_MASK BIT(6) + +#define BMP380_ERR_FATAL_MASK BIT(0) +#define BMP380_ERR_CMD_MASK BIT(1) +#define BMP380_ERR_CONF_MASK BIT(2) + +#define BMP380_TEMP_SKIPPED 0x800000 +#define BMP380_PRESS_SKIPPED 0x800000 + +/* BMP280 specific registers */ +#define BMP280_REG_HUMIDITY_LSB 0xFE +#define BMP280_REG_HUMIDITY_MSB 0xFD +#define BMP280_REG_TEMP_XLSB 0xFC +#define BMP280_REG_TEMP_LSB 0xFB +#define BMP280_REG_TEMP_MSB 0xFA +#define BMP280_REG_PRESS_XLSB 0xF9 +#define BMP280_REG_PRESS_LSB 0xF8 +#define BMP280_REG_PRESS_MSB 0xF7 + +/* Helper mask to truncate excess 4 bits on pressure and temp readings */ +#define BMP280_MEAS_TRIM_MASK GENMASK(24, 4) + +#define BMP280_REG_CONFIG 0xF5 +#define BMP280_REG_CTRL_MEAS 0xF4 +#define BMP280_REG_STATUS 0xF3 +#define BMP280_REG_CTRL_HUMIDITY 0xF2 + +/* Due to non linear mapping, and data sizes we can't do a bulk read */ +#define BMP280_REG_COMP_H1 0xA1 +#define BMP280_REG_COMP_H2 0xE1 +#define BMP280_REG_COMP_H3 0xE3 +#define BMP280_REG_COMP_H4 0xE4 +#define BMP280_REG_COMP_H5 0xE5 +#define BMP280_REG_COMP_H6 0xE7 + +#define BMP280_REG_COMP_TEMP_START 0x88 +#define BMP280_COMP_TEMP_REG_COUNT 6 + +#define BMP280_REG_COMP_PRESS_START 0x8E +#define BMP280_COMP_PRESS_REG_COUNT 18 + +#define BMP280_COMP_H5_MASK GENMASK(15, 4) + +#define BMP280_CONTIGUOUS_CALIB_REGS (BMP280_COMP_TEMP_REG_COUNT + \ + BMP280_COMP_PRESS_REG_COUNT) + +#define BMP280_FILTER_MASK GENMASK(4, 2) +#define BMP280_FILTER_OFF 0 +#define BMP280_FILTER_2X 1 +#define BMP280_FILTER_4X 2 +#define BMP280_FILTER_8X 3 +#define BMP280_FILTER_16X 4 + +#define BMP280_OSRS_HUMIDITY_MASK GENMASK(2, 0) +#define BMP280_OSRS_HUMIDITY_SKIP 0 +#define BMP280_OSRS_HUMIDITY_1X 1 +#define BMP280_OSRS_HUMIDITY_2X 2 +#define BMP280_OSRS_HUMIDITY_4X 3 +#define BMP280_OSRS_HUMIDITY_8X 4 +#define BMP280_OSRS_HUMIDITY_16X 5 + +#define BMP280_OSRS_TEMP_MASK GENMASK(7, 5) +#define BMP280_OSRS_TEMP_SKIP 0 +#define BMP280_OSRS_TEMP_1X 1 +#define BMP280_OSRS_TEMP_2X 2 +#define BMP280_OSRS_TEMP_4X 3 +#define BMP280_OSRS_TEMP_8X 4 +#define BMP280_OSRS_TEMP_16X 5 + +#define BMP280_OSRS_PRESS_MASK GENMASK(4, 2) +#define BMP280_OSRS_PRESS_SKIP 0 +#define BMP280_OSRS_PRESS_1X 1 +#define BMP280_OSRS_PRESS_2X 2 +#define BMP280_OSRS_PRESS_4X 3 +#define BMP280_OSRS_PRESS_8X 4 +#define BMP280_OSRS_PRESS_16X 5 + +#define BMP280_MODE_MASK GENMASK(1, 0) +#define BMP280_MODE_SLEEP 0 +#define BMP280_MODE_FORCED 1 +#define BMP280_MODE_NORMAL 3 + +/* BMP180 specific registers */ +#define BMP180_REG_OUT_XLSB 0xF8 +#define BMP180_REG_OUT_LSB 0xF7 +#define BMP180_REG_OUT_MSB 0xF6 + +#define BMP180_REG_CALIB_START 0xAA +#define BMP180_REG_CALIB_COUNT 22 + +#define BMP180_MEAS_CTRL_MASK GENMASK(4, 0) +#define BMP180_MEAS_TEMP 0x0E +#define BMP180_MEAS_PRESS 0x14 +#define BMP180_MEAS_SCO BIT(5) +#define BMP180_OSRS_PRESS_MASK GENMASK(7, 6) +#define BMP180_MEAS_PRESS_1X 0 +#define BMP180_MEAS_PRESS_2X 1 +#define BMP180_MEAS_PRESS_4X 2 +#define BMP180_MEAS_PRESS_8X 3 + +/* BMP180 and BMP280 common registers */ +#define BMP280_REG_CTRL_MEAS 0xF4 +#define BMP280_REG_RESET 0xE0 +#define BMP280_REG_ID 0xD0 + +#define BMP380_CHIP_ID 0x50 +#define BMP180_CHIP_ID 0x55 +#define BMP280_CHIP_ID 0x58 +#define BME280_CHIP_ID 0x60 +#define BMP280_SOFT_RESET_VAL 0xB6 + +/* BMP280 register skipped special values */ +#define BMP280_TEMP_SKIPPED 0x80000 +#define BMP280_PRESS_SKIPPED 0x80000 +#define BMP280_HUMIDITY_SKIPPED 0x8000 + +/* Regmap configurations */ +extern const struct regmap_config bmp180_regmap_config; +extern const struct regmap_config bmp280_regmap_config; +extern const struct regmap_config bmp380_regmap_config; + +/* Probe called from different transports */ +int bmp280_common_probe(struct device *dev, + struct regmap *regmap, + unsigned int chip, + const char *name, + int irq); + +/* PM ops */ +extern const struct dev_pm_ops bmp280_dev_pm_ops; |