17118843a5
This creates a separate BMP280_I2C Kconfig entry that gets selected by BMP280 for I2C transport. As we currently only support I2C transport there is not much practical change other than getting a separate object file (or module) for the I2C driver part. The old Kconfig symbol BMP280 will still select the stuff we need so that oldconfig and old defconfigs works fine. Tested-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
#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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