The scan mask for the BME280 supports humidity measurement and
needs to be distinguished from the rest in order for the timestamp
to be able to work.
Signed-off-by: Vasileios Amoiridis <vassilisamir@xxxxxxxxx>
---
drivers/iio/pressure/bmp280-core.c | 111 +++++++++++++++++++++++++----
drivers/iio/pressure/bmp280.h | 1 +
2 files changed, 98 insertions(+), 14 deletions(-)
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 312bc2617583..ddfcd23f29a0 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -134,7 +134,28 @@ enum {
BMP380_P11 = 20,
};
+enum bmp280_scan {
+ BMP280_TEMP,
+ BMP280_PRESS,
+ BME280_HUMID
+};
+
static const struct iio_chan_spec bmp280_channels[] = {
+ {
+ .type = IIO_TEMP,
+ /* PROCESSED maintained for ABI backwards compatibility */
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
+ },
{
.type = IIO_PRESSURE,
/* PROCESSED maintained for ABI backwards compatibility */
@@ -142,7 +163,18 @@ static const struct iio_chan_spec bmp280_channels[] = {
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
},
+ IIO_CHAN_SOFT_TIMESTAMP(2),
+};
+
+static const struct iio_chan_spec bme280_channels[] = {
{
.type = IIO_TEMP,
/* PROCESSED maintained for ABI backwards compatibility */
@@ -150,28 +182,48 @@ static const struct iio_chan_spec bmp280_channels[] = {
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
},
{
- .type = IIO_HUMIDITYRELATIVE,
+ .type = IIO_PRESSURE,
/* PROCESSED maintained for ABI backwards compatibility */
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
},
-};
-
-static const struct iio_chan_spec bmp380_channels[] = {
{
- .type = IIO_PRESSURE,
+ .type = IIO_HUMIDITYRELATIVE,
/* PROCESSED maintained for ABI backwards compatibility */
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
- BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+ .scan_index = 2,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
},
+ IIO_CHAN_SOFT_TIMESTAMP(3),
+};
+
+static const struct iio_chan_spec bmp380_channels[] = {
{
.type = IIO_TEMP,
/* PROCESSED maintained for ABI backwards compatibility */
@@ -181,9 +233,16 @@ static const struct iio_chan_spec bmp380_channels[] = {
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
},
{
- .type = IIO_HUMIDITYRELATIVE,
+ .type = IIO_PRESSURE,
/* PROCESSED maintained for ABI backwards compatibility */
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
BIT(IIO_CHAN_INFO_RAW) |
@@ -191,7 +250,15 @@ static const struct iio_chan_spec bmp380_channels[] = {
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_CPU,
+ },
},
+ IIO_CHAN_SOFT_TIMESTAMP(2),
};
static int bmp280_read_calib(struct bmp280_data *data)
@@ -825,6 +892,16 @@ static const struct iio_info bmp280_info = {
.write_raw = &bmp280_write_raw,
};
+static const unsigned long bmp280_avail_scan_masks[] = {
+ BIT(BMP280_PRESS) | BIT(BMP280_TEMP),
+ 0
+};
+
+static const unsigned long bme280_avail_scan_masks[] = {
+ BIT(BME280_HUMID) | BIT(BMP280_PRESS) | BIT(BMP280_TEMP),
+ 0
+};
+
static int bmp280_chip_config(struct bmp280_data *data)
{
u8 osrs = FIELD_PREP(BMP280_OSRS_TEMP_MASK, data->oversampling_temp + 1) |
@@ -866,7 +943,8 @@ const struct bmp280_chip_info bmp280_chip_info = {
.regmap_config = &bmp280_regmap_config,
.start_up_time = 2000,
.channels = bmp280_channels,
- .num_channels = 2,
+ .num_channels = 3,
+ .avail_scan_masks = bmp280_avail_scan_masks,
.oversampling_temp_avail = bmp280_oversampling_avail,
.num_oversampling_temp_avail = ARRAY_SIZE(bmp280_oversampling_avail),
@@ -925,8 +1003,9 @@ const struct bmp280_chip_info bme280_chip_info = {
.num_chip_id = ARRAY_SIZE(bme280_chip_ids),
.regmap_config = &bmp280_regmap_config,
.start_up_time = 2000,
- .channels = bmp280_channels,
- .num_channels = 3,
+ .channels = bme280_channels,
+ .num_channels = 4,
+ .avail_scan_masks = bme280_avail_scan_masks,
.oversampling_temp_avail = bmp280_oversampling_avail,
.num_oversampling_temp_avail = ARRAY_SIZE(bmp280_oversampling_avail),
@@ -1300,7 +1379,8 @@ const struct bmp280_chip_info bmp380_chip_info = {
.regmap_config = &bmp380_regmap_config,
.start_up_time = 2000,
.channels = bmp380_channels,
- .num_channels = 2,
+ .num_channels = 3,
+ .avail_scan_masks = bmp280_avail_scan_masks,
.oversampling_temp_avail = bmp380_oversampling_avail,
.num_oversampling_temp_avail = ARRAY_SIZE(bmp380_oversampling_avail),
@@ -1795,7 +1875,8 @@ const struct bmp280_chip_info bmp580_chip_info = {
.regmap_config = &bmp580_regmap_config,
.start_up_time = 2000,
.channels = bmp380_channels,
- .num_channels = 2,
+ .num_channels = 3,
+ .avail_scan_masks = bmp280_avail_scan_masks,
.oversampling_temp_avail = bmp580_oversampling_avail,
.num_oversampling_temp_avail = ARRAY_SIZE(bmp580_oversampling_avail),
@@ -2054,7 +2135,8 @@ const struct bmp280_chip_info bmp180_chip_info = {
.regmap_config = &bmp180_regmap_config,
.start_up_time = 2000,
.channels = bmp280_channels,
- .num_channels = 2,
+ .num_channels = 3,
+ .avail_scan_masks = bmp280_avail_scan_masks,
.oversampling_temp_avail = bmp180_oversampling_temp_avail,
.num_oversampling_temp_avail =
@@ -2166,6 +2248,7 @@ int bmp280_common_probe(struct device *dev,
/* Apply initial values from chip info structure */
indio_dev->channels = chip_info->channels;
indio_dev->num_channels = chip_info->num_channels;
+ indio_dev->available_scan_masks = chip_info->avail_scan_masks;
data->oversampling_press = chip_info->oversampling_press_default;
data->oversampling_humid = chip_info->oversampling_humid_default;
data->oversampling_temp = chip_info->oversampling_temp_default;
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index 6d1dca31dd52..8cc3eed70c18 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -427,6 +427,7 @@ struct bmp280_chip_info {
const struct iio_chan_spec *channels;
int num_channels;
unsigned int start_up_time;
+ const unsigned long *avail_scan_masks;
const int *oversampling_temp_avail;
int num_oversampling_temp_avail;
--
2.25.1
