Add the correct scale to get temperature in mili degree Celcius. Add sign component to temperature scan element.
Signed-off-by: Sean Nyekjaer sean@geanix.com --- Changes in v4: - Blindly Copy/Pasted Andy's comment. Use the correct MILLIDEGREE_PER_DEGREE - Link to v3: https://lore.kernel.org/r/20250505-fxls-v3-0-8c541bf0205c@geanix.com
Changes in v3: - Dropping define infavor of inline scale value - Added using constants from units.h - Tweaked commit msg to make it more assertive - Link to v2: https://lore.kernel.org/r/20250502-fxls-v2-0-e1af65f1aa6c@geanix.com
Changes in v2: - Correct offset is applied before scaling component - Added sign component to temperature scan element - Link to v1: https://lore.kernel.org/r/20250501-fxls-v1-1-f54061a07099@geanix.com
--- Sean Nyekjaer (2): iio: accel: fxls8962af: Fix temperature calculation iio: accel: fxls8962af: Fix temperature scan element sign
drivers/iio/accel/fxls8962af-core.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) --- base-commit: 609bc31eca06c7408e6860d8b46311ebe45c1fef change-id: 20250501-fxls-307ef3d6d065
Best regards,
According to spec temperature should be returned in milli degrees Celsius. Add in_temp_scale to calculate from Celsius to milli Celsius.
Fixes: a3e0b51884ee ("iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers") Cc: stable@vger.kernel.org Reviewed-by: Marcelo Schmitt marcelo.schmitt1@gmail.com Signed-off-by: Sean Nyekjaer sean@geanix.com --- drivers/iio/accel/fxls8962af-core.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c index bf1d3923a181798a1c884ee08b62d86ab5aed26f..5f5e917f7aa53912448ba078027183c63bc0cd7d 100644 --- a/drivers/iio/accel/fxls8962af-core.c +++ b/drivers/iio/accel/fxls8962af-core.c @@ -23,6 +23,7 @@ #include <linux/regulator/consumer.h> #include <linux/regmap.h> #include <linux/types.h> +#include <linux/units.h>
#include <linux/iio/buffer.h> #include <linux/iio/events.h> @@ -439,8 +440,16 @@ static int fxls8962af_read_raw(struct iio_dev *indio_dev, *val = FXLS8962AF_TEMP_CENTER_VAL; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - *val = 0; - return fxls8962af_read_full_scale(data, val2); + switch (chan->type) { + case IIO_TEMP: + *val = MILLIDEGREE_PER_DEGREE; + return IIO_VAL_INT; + case IIO_ACCEL: + *val = 0; + return fxls8962af_read_full_scale(data, val2); + default: + return -EINVAL; + } case IIO_CHAN_INFO_SAMP_FREQ: return fxls8962af_read_samp_freq(data, val, val2); default: @@ -736,6 +745,7 @@ static const struct iio_event_spec fxls8962af_event[] = { .type = IIO_TEMP, \ .address = FXLS8962AF_TEMP_OUT, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE) | \ BIT(IIO_CHAN_INFO_OFFSET),\ .scan_index = -1, \ .scan_type = { \
Mark the temperature element signed, data read from the TEMP_OUT register is in two's complement format. This will avoid the temperature being mishandled and miss displayed.
Fixes: a3e0b51884ee ("iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers") Suggested-by: Marcelo Schmitt marcelo.schmitt1@gmail.com Cc: stable@vger.kernel.org Reviewed-by: Marcelo Schmitt marcelo.schmitt1@gmail.com Signed-off-by: Sean Nyekjaer sean@geanix.com --- drivers/iio/accel/fxls8962af-core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c index 5f5e917f7aa53912448ba078027183c63bc0cd7d..ae965a8f560d3b9872a7197c3b540fe4f7f655df 100644 --- a/drivers/iio/accel/fxls8962af-core.c +++ b/drivers/iio/accel/fxls8962af-core.c @@ -749,6 +749,7 @@ static const struct iio_event_spec fxls8962af_event[] = { BIT(IIO_CHAN_INFO_OFFSET),\ .scan_index = -1, \ .scan_type = { \ + .sign = 's', \ .realbits = 8, \ .storagebits = 8, \ }, \
linux-stable-mirror@lists.linaro.org
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Sean Nyekjaer