86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include "bmp280.h"
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static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case BMP280_REG_CTRL_MEAS:
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case BMP280_REG_RESET:
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return true;
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default:
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return false;
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}
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}
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static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case BMP180_REG_OUT_XLSB:
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case BMP180_REG_OUT_LSB:
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case BMP180_REG_OUT_MSB:
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case BMP280_REG_CTRL_MEAS:
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return true;
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default:
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return false;
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}
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}
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const struct regmap_config bmp180_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = BMP180_REG_OUT_XLSB,
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.cache_type = REGCACHE_RBTREE,
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.writeable_reg = bmp180_is_writeable_reg,
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.volatile_reg = bmp180_is_volatile_reg,
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};
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EXPORT_SYMBOL(bmp180_regmap_config);
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static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case BMP280_REG_CONFIG:
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case BMP280_REG_CTRL_HUMIDITY:
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case BMP280_REG_CTRL_MEAS:
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case BMP280_REG_RESET:
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return true;
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default:
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return false;
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}
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}
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static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case BMP280_REG_HUMIDITY_LSB:
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case BMP280_REG_HUMIDITY_MSB:
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case BMP280_REG_TEMP_XLSB:
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case BMP280_REG_TEMP_LSB:
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case BMP280_REG_TEMP_MSB:
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case BMP280_REG_PRESS_XLSB:
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case BMP280_REG_PRESS_LSB:
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case BMP280_REG_PRESS_MSB:
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case BMP280_REG_STATUS:
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return true;
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default:
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return false;
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}
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}
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const struct regmap_config bmp280_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = BMP280_REG_HUMIDITY_LSB,
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.cache_type = REGCACHE_RBTREE,
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.writeable_reg = bmp280_is_writeable_reg,
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.volatile_reg = bmp280_is_volatile_reg,
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};
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EXPORT_SYMBOL(bmp280_regmap_config);
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