6.6-stable review patch. If anyone has any objections, please let me know.
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From: Vasileios Amoiridis vassilisamir@gmail.com
[ Upstream commit b9065b0250e1705935445ede0a18c1850afe7b75 ]
Up to now, the BMP280 device is using the regmap of the BME280 which has registers that exist only in the BME280 device.
Fixes: 14e8015f8569 ("iio: pressure: bmp280: split driver in logical parts") Signed-off-by: Vasileios Amoiridis vassilisamir@gmail.com Link: https://patch.msgid.link/20240711211558.106327-2-vassilisamir@gmail.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/pressure/bmp280-core.c | 2 +- drivers/iio/pressure/bmp280-regmap.c | 45 ++++++++++++++++++++++++++-- drivers/iio/pressure/bmp280.h | 1 + 3 files changed, 44 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index 8f70fd72f132a..3ba718b11c464 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -852,7 +852,7 @@ const struct bmp280_chip_info bme280_chip_info = { .id_reg = BMP280_REG_ID, .chip_id = bme280_chip_ids, .num_chip_id = ARRAY_SIZE(bme280_chip_ids), - .regmap_config = &bmp280_regmap_config, + .regmap_config = &bme280_regmap_config, .start_up_time = 2000, .channels = bmp280_channels, .num_channels = 3, diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c index fa52839474b18..d27d68edd9065 100644 --- a/drivers/iio/pressure/bmp280-regmap.c +++ b/drivers/iio/pressure/bmp280-regmap.c @@ -41,7 +41,7 @@ const struct regmap_config bmp180_regmap_config = { }; EXPORT_SYMBOL_NS(bmp180_regmap_config, IIO_BMP280);
-static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg) +static bool bme280_is_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { case BMP280_REG_CONFIG: @@ -54,7 +54,35 @@ static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg) } }
+static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case BMP280_REG_CONFIG: + 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_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 bme280_is_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { case BME280_REG_HUMIDITY_LSB: @@ -71,7 +99,6 @@ static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg) return false; } } - static bool bmp380_is_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -167,7 +194,7 @@ const struct regmap_config bmp280_regmap_config = { .reg_bits = 8, .val_bits = 8,
- .max_register = BME280_REG_HUMIDITY_LSB, + .max_register = BMP280_REG_TEMP_XLSB, .cache_type = REGCACHE_RBTREE,
.writeable_reg = bmp280_is_writeable_reg, @@ -175,6 +202,18 @@ const struct regmap_config bmp280_regmap_config = { }; EXPORT_SYMBOL_NS(bmp280_regmap_config, IIO_BMP280);
+const struct regmap_config bme280_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = BME280_REG_HUMIDITY_LSB, + .cache_type = REGCACHE_RBTREE, + + .writeable_reg = bme280_is_writeable_reg, + .volatile_reg = bme280_is_volatile_reg, +}; +EXPORT_SYMBOL_NS(bme280_regmap_config, IIO_BMP280); + const struct regmap_config bmp380_regmap_config = { .reg_bits = 8, .val_bits = 8, diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h index 1a6903a917add..b60e551b7d318 100644 --- a/drivers/iio/pressure/bmp280.h +++ b/drivers/iio/pressure/bmp280.h @@ -468,6 +468,7 @@ extern const struct bmp280_chip_info bmp580_chip_info; /* Regmap configurations */ extern const struct regmap_config bmp180_regmap_config; extern const struct regmap_config bmp280_regmap_config; +extern const struct regmap_config bme280_regmap_config; extern const struct regmap_config bmp380_regmap_config; extern const struct regmap_config bmp580_regmap_config;