linux/drivers/iio/pressure/bmp280.h
Bartosz Golaszewski 2f4292a821 iio: pressure: bmp280: use devm action and remove labels from probe
We can drop some duplicate code if we use devm_action for disabling
regulators and pm and the managed variant of iio_device_register().

This allows us to completely remove all remove() callbacks from both
i2c and spi code.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-22 11:10:23 +01:00

118 lines
3.9 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/regmap.h>
/* 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
#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_FILTER_MASK (BIT(4) | BIT(3) | BIT(2))
#define BMP280_FILTER_OFF 0
#define BMP280_FILTER_2X BIT(2)
#define BMP280_FILTER_4X BIT(3)
#define BMP280_FILTER_8X (BIT(3) | BIT(2))
#define BMP280_FILTER_16X BIT(4)
#define BMP280_OSRS_HUMIDITY_MASK (BIT(2) | BIT(1) | BIT(0))
#define BMP280_OSRS_HUMIDITIY_X(osrs_h) ((osrs_h) << 0)
#define BMP280_OSRS_HUMIDITY_SKIP 0
#define BMP280_OSRS_HUMIDITY_1X BMP280_OSRS_HUMIDITIY_X(1)
#define BMP280_OSRS_HUMIDITY_2X BMP280_OSRS_HUMIDITIY_X(2)
#define BMP280_OSRS_HUMIDITY_4X BMP280_OSRS_HUMIDITIY_X(3)
#define BMP280_OSRS_HUMIDITY_8X BMP280_OSRS_HUMIDITIY_X(4)
#define BMP280_OSRS_HUMIDITY_16X BMP280_OSRS_HUMIDITIY_X(5)
#define BMP280_OSRS_TEMP_MASK (BIT(7) | BIT(6) | BIT(5))
#define BMP280_OSRS_TEMP_SKIP 0
#define BMP280_OSRS_TEMP_X(osrs_t) ((osrs_t) << 5)
#define BMP280_OSRS_TEMP_1X BMP280_OSRS_TEMP_X(1)
#define BMP280_OSRS_TEMP_2X BMP280_OSRS_TEMP_X(2)
#define BMP280_OSRS_TEMP_4X BMP280_OSRS_TEMP_X(3)
#define BMP280_OSRS_TEMP_8X BMP280_OSRS_TEMP_X(4)
#define BMP280_OSRS_TEMP_16X BMP280_OSRS_TEMP_X(5)
#define BMP280_OSRS_PRESS_MASK (BIT(4) | BIT(3) | BIT(2))
#define BMP280_OSRS_PRESS_SKIP 0
#define BMP280_OSRS_PRESS_X(osrs_p) ((osrs_p) << 2)
#define BMP280_OSRS_PRESS_1X BMP280_OSRS_PRESS_X(1)
#define BMP280_OSRS_PRESS_2X BMP280_OSRS_PRESS_X(2)
#define BMP280_OSRS_PRESS_4X BMP280_OSRS_PRESS_X(3)
#define BMP280_OSRS_PRESS_8X BMP280_OSRS_PRESS_X(4)
#define BMP280_OSRS_PRESS_16X BMP280_OSRS_PRESS_X(5)
#define BMP280_MODE_MASK (BIT(1) | BIT(0))
#define BMP280_MODE_SLEEP 0
#define BMP280_MODE_FORCED BIT(0)
#define BMP280_MODE_NORMAL (BIT(1) | BIT(0))
/* 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_SCO BIT(5)
#define BMP180_MEAS_TEMP (0x0E | BMP180_MEAS_SCO)
#define BMP180_MEAS_PRESS_X(oss) ((oss) << 6 | 0x14 | BMP180_MEAS_SCO)
#define BMP180_MEAS_PRESS_1X BMP180_MEAS_PRESS_X(0)
#define BMP180_MEAS_PRESS_2X BMP180_MEAS_PRESS_X(1)
#define BMP180_MEAS_PRESS_4X BMP180_MEAS_PRESS_X(2)
#define BMP180_MEAS_PRESS_8X BMP180_MEAS_PRESS_X(3)
/* BMP180 and BMP280 common registers */
#define BMP280_REG_CTRL_MEAS 0xF4
#define BMP280_REG_RESET 0xE0
#define BMP280_REG_ID 0xD0
#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;
/* 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;