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85 lines
1.7 KiB
85 lines
1.7 KiB
// 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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