86 lines
1.7 KiB
C
Executable File
86 lines
1.7 KiB
C
Executable File
// 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(bmp180_regmap_config);
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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(bmp280_regmap_config);
|