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iio: temperature: iqs620at-temp: Add support for V3 silicon

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The vendor introduced an updated revision of IQS620A(T) silicon
which is backwards-compatible with previous revisions, the only
exception being the offset used to derive temperature.

Enable this new revision by returning the appropriate offset as
a function of the hardware number provided by the parent MFD.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Jeff LaBundy 2022-01-23 13:01:06 -06:00 committed by Lee Jones
parent 1de785a580
commit 9e444dbf27
1 changed files with 3 additions and 1 deletions
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4
drivers/iio/temperature/iqs620at-temp.c
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@ -17,6 +17,7 @@
#define IQS620_TEMP_SCALE 1000
#define IQS620_TEMP_OFFSET (-100)
#define IQS620_TEMP_OFFSET_V3 (-40)
static int iqs620_temp_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
@ -41,7 +42,8 @@ static int iqs620_temp_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_OFFSET:
*val = IQS620_TEMP_OFFSET;
*val = iqs62x->hw_num < IQS620_HW_NUM_V3 ? IQS620_TEMP_OFFSET
: IQS620_TEMP_OFFSET_V3;
return IIO_VAL_INT;
default: