linux/drivers/iio/pressure/bmp280-regmap.c
Angel Iglesias 597dfb2af0 iio: pressure: bmp280: Add support for new sensor BMP580
Adds compatibility with the new sensor generation, the BMP580.

The measurement and initialization codepaths are adapted from
the device datasheet and the repository from manufacturer at
https://github.com/boschsensortec/BMP5-Sensor-API.

Signed-off-by: Angel Iglesias <ang.iglesiasg@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/f899fceec9b48bc173bd4b7555f0a237fa32d520.1676823250.git.ang.iglesiasg@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2023-03-11 12:18:29 +00:00

201 lines
4.4 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/device.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include "bmp280.h"
static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP280_REG_CTRL_MEAS:
case BMP280_REG_RESET:
return true;
default:
return false;
}
}
static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP180_REG_OUT_XLSB:
case BMP180_REG_OUT_LSB:
case BMP180_REG_OUT_MSB:
case BMP280_REG_CTRL_MEAS:
return true;
default:
return false;
}
}
const struct regmap_config bmp180_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BMP180_REG_OUT_XLSB,
.cache_type = REGCACHE_RBTREE,
.writeable_reg = bmp180_is_writeable_reg,
.volatile_reg = bmp180_is_volatile_reg,
};
EXPORT_SYMBOL_NS(bmp180_regmap_config, IIO_BMP280);
static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP280_REG_CONFIG:
case BMP280_REG_CTRL_HUMIDITY:
case BMP280_REG_CTRL_MEAS:
case BMP280_REG_RESET:
return true;
default:
return false;
}
}
static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP280_REG_HUMIDITY_LSB:
case BMP280_REG_HUMIDITY_MSB:
case BMP280_REG_TEMP_XLSB:
case BMP280_REG_TEMP_LSB:
case BMP280_REG_TEMP_MSB:
case BMP280_REG_PRESS_XLSB:
case BMP280_REG_PRESS_LSB:
case BMP280_REG_PRESS_MSB:
case BMP280_REG_STATUS:
return true;
default:
return false;
}
}
static bool bmp380_is_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP380_REG_CMD:
case BMP380_REG_CONFIG:
case BMP380_REG_FIFO_CONFIG_1:
case BMP380_REG_FIFO_CONFIG_2:
case BMP380_REG_FIFO_WATERMARK_LSB:
case BMP380_REG_FIFO_WATERMARK_MSB:
case BMP380_REG_POWER_CONTROL:
case BMP380_REG_INT_CONTROL:
case BMP380_REG_IF_CONFIG:
case BMP380_REG_ODR:
case BMP380_REG_OSR:
return true;
default:
return false;
}
}
static bool bmp380_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP380_REG_TEMP_XLSB:
case BMP380_REG_TEMP_LSB:
case BMP380_REG_TEMP_MSB:
case BMP380_REG_PRESS_XLSB:
case BMP380_REG_PRESS_LSB:
case BMP380_REG_PRESS_MSB:
case BMP380_REG_SENSOR_TIME_XLSB:
case BMP380_REG_SENSOR_TIME_LSB:
case BMP380_REG_SENSOR_TIME_MSB:
case BMP380_REG_INT_STATUS:
case BMP380_REG_FIFO_DATA:
case BMP380_REG_STATUS:
case BMP380_REG_ERROR:
case BMP380_REG_EVENT:
return true;
default:
return false;
}
}
static bool bmp580_is_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP580_REG_NVM_DATA_MSB:
case BMP580_REG_NVM_DATA_LSB:
case BMP580_REG_NVM_ADDR:
case BMP580_REG_ODR_CONFIG:
case BMP580_REG_OSR_CONFIG:
case BMP580_REG_INT_SOURCE:
case BMP580_REG_INT_CONFIG:
case BMP580_REG_OOR_THR_MSB:
case BMP580_REG_OOR_THR_LSB:
case BMP580_REG_OOR_CONFIG:
case BMP580_REG_OOR_RANGE:
case BMP580_REG_IF_CONFIG:
case BMP580_REG_FIFO_CONFIG:
case BMP580_REG_FIFO_SEL:
case BMP580_REG_DSP_CONFIG:
case BMP580_REG_DSP_IIR:
case BMP580_REG_CMD:
return true;
default:
return false;
}
}
static bool bmp580_is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP580_REG_NVM_DATA_MSB:
case BMP580_REG_NVM_DATA_LSB:
case BMP580_REG_FIFO_COUNT:
case BMP580_REG_INT_STATUS:
case BMP580_REG_PRESS_XLSB:
case BMP580_REG_PRESS_LSB:
case BMP580_REG_PRESS_MSB:
case BMP580_REG_FIFO_DATA:
case BMP580_REG_TEMP_XLSB:
case BMP580_REG_TEMP_LSB:
case BMP580_REG_TEMP_MSB:
case BMP580_REG_EFF_OSR:
case BMP580_REG_STATUS:
return true;
default:
return false;
}
}
const struct regmap_config bmp280_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BMP280_REG_HUMIDITY_LSB,
.cache_type = REGCACHE_RBTREE,
.writeable_reg = bmp280_is_writeable_reg,
.volatile_reg = bmp280_is_volatile_reg,
};
EXPORT_SYMBOL_NS(bmp280_regmap_config, IIO_BMP280);
const struct regmap_config bmp380_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BMP380_REG_CMD,
.cache_type = REGCACHE_RBTREE,
.writeable_reg = bmp380_is_writeable_reg,
.volatile_reg = bmp380_is_volatile_reg,
};
EXPORT_SYMBOL_NS(bmp380_regmap_config, IIO_BMP280);
const struct regmap_config bmp580_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = BMP580_REG_CMD,
.cache_type = REGCACHE_RBTREE,
.writeable_reg = bmp580_is_writeable_reg,
.volatile_reg = bmp580_is_volatile_reg,
};
EXPORT_SYMBOL_NS(bmp580_regmap_config, IIO_BMP280);