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