This is a note to let you know that I've just added the patch titled
iio: pressure: bmp280: Use BME prefix for BME280 specifics
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iio-pressure-bmp280-use-bme-prefix-for-bme280-specif.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b50e8262fc726c3792745b124299512510b77530
Author: Vasileios Amoiridis <vassilisamir@xxxxxxxxx>
Date: Mon Apr 29 21:00:38 2024 +0200
iio: pressure: bmp280: Use BME prefix for BME280 specifics
[ Upstream commit b23be4cd99a6f1f46963b87952632268174e62c1 ]
Change the rest of the defines and function names that are
used specifically by the BME280 humidity sensor to BME280
as it is done for the rest of the BMP{0,1,3,5}80 sensors.
Signed-off-by: Vasileios Amoiridis <vassilisamir@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240429190046.24252-3-vassilisamir@xxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Stable-dep-of: b9065b0250e1 ("iio: pressure: bmp280: Fix regmap for BMP280 device")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index dac2a4e237929..8f70fd72f132a 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -234,14 +234,14 @@ static int bme280_read_calib(struct bmp280_data *data)
* Humidity data is only available on BME280.
*/
- ret = regmap_read(data->regmap, BMP280_REG_COMP_H1, &tmp);
+ ret = regmap_read(data->regmap, BME280_REG_COMP_H1, &tmp);
if (ret < 0) {
dev_err(dev, "failed to read H1 comp value\n");
return ret;
}
calib->H1 = tmp;
- ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H2,
+ ret = regmap_bulk_read(data->regmap, BME280_REG_COMP_H2,
&data->le16, sizeof(data->le16));
if (ret < 0) {
dev_err(dev, "failed to read H2 comp value\n");
@@ -249,14 +249,14 @@ static int bme280_read_calib(struct bmp280_data *data)
}
calib->H2 = sign_extend32(le16_to_cpu(data->le16), 15);
- ret = regmap_read(data->regmap, BMP280_REG_COMP_H3, &tmp);
+ ret = regmap_read(data->regmap, BME280_REG_COMP_H3, &tmp);
if (ret < 0) {
dev_err(dev, "failed to read H3 comp value\n");
return ret;
}
calib->H3 = tmp;
- ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H4,
+ ret = regmap_bulk_read(data->regmap, BME280_REG_COMP_H4,
&data->be16, sizeof(data->be16));
if (ret < 0) {
dev_err(dev, "failed to read H4 comp value\n");
@@ -265,15 +265,15 @@ static int bme280_read_calib(struct bmp280_data *data)
calib->H4 = sign_extend32(((be16_to_cpu(data->be16) >> 4) & 0xff0) |
(be16_to_cpu(data->be16) & 0xf), 11);
- ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H5,
+ ret = regmap_bulk_read(data->regmap, BME280_REG_COMP_H5,
&data->le16, sizeof(data->le16));
if (ret < 0) {
dev_err(dev, "failed to read H5 comp value\n");
return ret;
}
- calib->H5 = sign_extend32(FIELD_GET(BMP280_COMP_H5_MASK, le16_to_cpu(data->le16)), 11);
+ calib->H5 = sign_extend32(FIELD_GET(BME280_COMP_H5_MASK, le16_to_cpu(data->le16)), 11);
- ret = regmap_read(data->regmap, BMP280_REG_COMP_H6, &tmp);
+ ret = regmap_read(data->regmap, BME280_REG_COMP_H6, &tmp);
if (ret < 0) {
dev_err(dev, "failed to read H6 comp value\n");
return ret;
@@ -289,7 +289,7 @@ static int bme280_read_calib(struct bmp280_data *data)
*
* Taken from BME280 datasheet, Section 4.2.3, "Compensation formula".
*/
-static u32 bmp280_compensate_humidity(struct bmp280_data *data,
+static u32 bme280_compensate_humidity(struct bmp280_data *data,
s32 adc_humidity)
{
struct bmp280_calib *calib = &data->calib.bmp280;
@@ -429,7 +429,7 @@ static int bmp280_read_press(struct bmp280_data *data,
return IIO_VAL_FRACTIONAL;
}
-static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
+static int bme280_read_humid(struct bmp280_data *data, int *val, int *val2)
{
u32 comp_humidity;
s32 adc_humidity;
@@ -440,7 +440,7 @@ static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
if (ret < 0)
return ret;
- ret = regmap_bulk_read(data->regmap, BMP280_REG_HUMIDITY_MSB,
+ ret = regmap_bulk_read(data->regmap, BME280_REG_HUMIDITY_MSB,
&data->be16, sizeof(data->be16));
if (ret < 0) {
dev_err(data->dev, "failed to read humidity\n");
@@ -453,7 +453,7 @@ static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
dev_err(data->dev, "reading humidity skipped\n");
return -EIO;
}
- comp_humidity = bmp280_compensate_humidity(data, adc_humidity);
+ comp_humidity = bme280_compensate_humidity(data, adc_humidity);
*val = comp_humidity * 1000 / 1024;
@@ -537,7 +537,7 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
return ret;
}
-static int bmp280_write_oversampling_ratio_humid(struct bmp280_data *data,
+static int bme280_write_oversampling_ratio_humid(struct bmp280_data *data,
int val)
{
const int *avail = data->chip_info->oversampling_humid_avail;
@@ -681,7 +681,7 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
mutex_lock(&data->lock);
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
- ret = bmp280_write_oversampling_ratio_humid(data, val);
+ ret = bme280_write_oversampling_ratio_humid(data, val);
break;
case IIO_PRESSURE:
ret = bmp280_write_oversampling_ratio_press(data, val);
@@ -831,16 +831,15 @@ EXPORT_SYMBOL_NS(bmp280_chip_info, IIO_BMP280);
static int bme280_chip_config(struct bmp280_data *data)
{
- u8 osrs = FIELD_PREP(BMP280_OSRS_HUMIDITY_MASK, data->oversampling_humid + 1);
+ u8 osrs = FIELD_PREP(BME280_OSRS_HUMIDITY_MASK, data->oversampling_humid + 1);
int ret;
/*
* Oversampling of humidity must be set before oversampling of
* temperature/pressure is set to become effective.
*/
- ret = regmap_update_bits(data->regmap, BMP280_REG_CTRL_HUMIDITY,
- BMP280_OSRS_HUMIDITY_MASK, osrs);
-
+ ret = regmap_update_bits(data->regmap, BME280_REG_CTRL_HUMIDITY,
+ BME280_OSRS_HUMIDITY_MASK, osrs);
if (ret < 0)
return ret;
@@ -868,12 +867,12 @@ const struct bmp280_chip_info bme280_chip_info = {
.oversampling_humid_avail = bmp280_oversampling_avail,
.num_oversampling_humid_avail = ARRAY_SIZE(bmp280_oversampling_avail),
- .oversampling_humid_default = BMP280_OSRS_HUMIDITY_16X - 1,
+ .oversampling_humid_default = BME280_OSRS_HUMIDITY_16X - 1,
.chip_config = bme280_chip_config,
.read_temp = bmp280_read_temp,
.read_press = bmp280_read_press,
- .read_humid = bmp280_read_humid,
+ .read_humid = bme280_read_humid,
.read_calib = bme280_read_calib,
};
EXPORT_SYMBOL_NS(bme280_chip_info, IIO_BMP280);
diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c
index 3ee56720428c5..fa52839474b18 100644
--- a/drivers/iio/pressure/bmp280-regmap.c
+++ b/drivers/iio/pressure/bmp280-regmap.c
@@ -45,7 +45,7 @@ static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case BMP280_REG_CONFIG:
- case BMP280_REG_CTRL_HUMIDITY:
+ case BME280_REG_CTRL_HUMIDITY:
case BMP280_REG_CTRL_MEAS:
case BMP280_REG_RESET:
return true;
@@ -57,8 +57,8 @@ static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
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 BME280_REG_HUMIDITY_LSB:
+ case BME280_REG_HUMIDITY_MSB:
case BMP280_REG_TEMP_XLSB:
case BMP280_REG_TEMP_LSB:
case BMP280_REG_TEMP_MSB:
@@ -167,7 +167,7 @@ const struct regmap_config bmp280_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
- .max_register = BMP280_REG_HUMIDITY_LSB,
+ .max_register = BME280_REG_HUMIDITY_LSB,
.cache_type = REGCACHE_RBTREE,
.writeable_reg = bmp280_is_writeable_reg,
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index a44ea33221635..1a6903a917add 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -192,8 +192,6 @@
#define BMP380_PRESS_SKIPPED 0x800000
/* BMP280 specific registers */
-#define BMP280_REG_HUMIDITY_LSB 0xFE
-#define BMP280_REG_HUMIDITY_MSB 0xFD
#define BMP280_REG_TEMP_XLSB 0xFC
#define BMP280_REG_TEMP_LSB 0xFB
#define BMP280_REG_TEMP_MSB 0xFA
@@ -207,15 +205,6 @@
#define BMP280_REG_CONFIG 0xF5
#define BMP280_REG_CTRL_MEAS 0xF4
#define BMP280_REG_STATUS 0xF3
-#define BMP280_REG_CTRL_HUMIDITY 0xF2
-
-/* Due to non linear mapping, and data sizes we can't do a bulk read */
-#define BMP280_REG_COMP_H1 0xA1
-#define BMP280_REG_COMP_H2 0xE1
-#define BMP280_REG_COMP_H3 0xE3
-#define BMP280_REG_COMP_H4 0xE4
-#define BMP280_REG_COMP_H5 0xE5
-#define BMP280_REG_COMP_H6 0xE7
#define BMP280_REG_COMP_TEMP_START 0x88
#define BMP280_COMP_TEMP_REG_COUNT 6
@@ -223,8 +212,6 @@
#define BMP280_REG_COMP_PRESS_START 0x8E
#define BMP280_COMP_PRESS_REG_COUNT 18
-#define BMP280_COMP_H5_MASK GENMASK(15, 4)
-
#define BMP280_CONTIGUOUS_CALIB_REGS (BMP280_COMP_TEMP_REG_COUNT + \
BMP280_COMP_PRESS_REG_COUNT)
@@ -235,14 +222,6 @@
#define BMP280_FILTER_8X 3
#define BMP280_FILTER_16X 4
-#define BMP280_OSRS_HUMIDITY_MASK GENMASK(2, 0)
-#define BMP280_OSRS_HUMIDITY_SKIP 0
-#define BMP280_OSRS_HUMIDITY_1X 1
-#define BMP280_OSRS_HUMIDITY_2X 2
-#define BMP280_OSRS_HUMIDITY_4X 3
-#define BMP280_OSRS_HUMIDITY_8X 4
-#define BMP280_OSRS_HUMIDITY_16X 5
-
#define BMP280_OSRS_TEMP_MASK GENMASK(7, 5)
#define BMP280_OSRS_TEMP_SKIP 0
#define BMP280_OSRS_TEMP_1X 1
@@ -264,6 +243,30 @@
#define BMP280_MODE_FORCED 1
#define BMP280_MODE_NORMAL 3
+/* BME280 specific registers */
+#define BME280_REG_HUMIDITY_LSB 0xFE
+#define BME280_REG_HUMIDITY_MSB 0xFD
+
+#define BME280_REG_CTRL_HUMIDITY 0xF2
+
+/* Due to non linear mapping, and data sizes we can't do a bulk read */
+#define BME280_REG_COMP_H1 0xA1
+#define BME280_REG_COMP_H2 0xE1
+#define BME280_REG_COMP_H3 0xE3
+#define BME280_REG_COMP_H4 0xE4
+#define BME280_REG_COMP_H5 0xE5
+#define BME280_REG_COMP_H6 0xE7
+
+#define BME280_COMP_H5_MASK GENMASK(15, 4)
+
+#define BME280_OSRS_HUMIDITY_MASK GENMASK(2, 0)
+#define BME280_OSRS_HUMIDITY_SKIP 0
+#define BME280_OSRS_HUMIDITY_1X 1
+#define BME280_OSRS_HUMIDITY_2X 2
+#define BME280_OSRS_HUMIDITY_4X 3
+#define BME280_OSRS_HUMIDITY_8X 4
+#define BME280_OSRS_HUMIDITY_16X 5
+
/* BMP180 specific registers */
#define BMP180_REG_OUT_XLSB 0xF8
#define BMP180_REG_OUT_LSB 0xF7
