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| author | David S. Miller <davem@davemloft.net> | 2021-10-22 13:41:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-22 13:41:16 +0300 |
| commit | bdfa75ad70e93633e18b1ed2b3866c01aa9bf9d2 (patch) | |
| tree | 45115e9c988cbaa49f3766cbe6e6775757cb8c20 /drivers/iio/adc/mt6577_auxadc.c | |
| parent | ab98bbee072c7c30c391ae742b209efebb468273 (diff) | |
| parent | 64222515138e43da1fcf288f0289ef1020427b87 (diff) | |
| download | linux-bdfa75ad70e93633e18b1ed2b3866c01aa9bf9d2.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Lots of simnple overlapping additions.
With a build fix from Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/iio/adc/mt6577_auxadc.c')
| -rw-r--r-- | drivers/iio/adc/mt6577_auxadc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iio/adc/mt6577_auxadc.c b/drivers/iio/adc/mt6577_auxadc.c index 79c1dd68b909..d4fccd52ef08 100644 --- a/drivers/iio/adc/mt6577_auxadc.c +++ b/drivers/iio/adc/mt6577_auxadc.c @@ -82,6 +82,10 @@ static const struct iio_chan_spec mt6577_auxadc_iio_channels[] = { MT6577_AUXADC_CHANNEL(15), }; +/* For Voltage calculation */ +#define VOLTAGE_FULL_RANGE 1500 /* VA voltage */ +#define AUXADC_PRECISE 4096 /* 12 bits */ + static int mt_auxadc_get_cali_data(int rawdata, bool enable_cali) { return rawdata; @@ -191,6 +195,10 @@ static int mt6577_auxadc_read_raw(struct iio_dev *indio_dev, } if (adc_dev->dev_comp->sample_data_cali) *val = mt_auxadc_get_cali_data(*val, true); + + /* Convert adc raw data to voltage: 0 - 1500 mV */ + *val = *val * VOLTAGE_FULL_RANGE / AUXADC_PRECISE; + return IIO_VAL_INT; default: |